diff options
Diffstat (limited to 'source/3rd-party/SDL2/src/render/opengl')
| -rw-r--r-- | source/3rd-party/SDL2/src/render/opengl/SDL_glfuncs.h | 478 | ||||
| -rw-r--r-- | source/3rd-party/SDL2/src/render/opengl/SDL_render_gl.c | 1678 | ||||
| -rw-r--r-- | source/3rd-party/SDL2/src/render/opengl/SDL_shaders_gl.c | 524 | ||||
| -rw-r--r-- | source/3rd-party/SDL2/src/render/opengl/SDL_shaders_gl.h | 53 |
4 files changed, 2733 insertions, 0 deletions
diff --git a/source/3rd-party/SDL2/src/render/opengl/SDL_glfuncs.h b/source/3rd-party/SDL2/src/render/opengl/SDL_glfuncs.h new file mode 100644 index 0000000..02be0e1 --- /dev/null +++ b/source/3rd-party/SDL2/src/render/opengl/SDL_glfuncs.h @@ -0,0 +1,478 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +/* list of OpenGL functions sorted alphabetically + If you need to use a GL function from the SDL video subsystem, + change its entry from SDL_PROC_UNUSED to SDL_PROC and rebuild. +*/ +#define SDL_PROC_UNUSED(ret,func,params) + +SDL_PROC_UNUSED(void, glAccum, (GLenum, GLfloat)) +SDL_PROC_UNUSED(void, glAlphaFunc, (GLenum, GLclampf)) +SDL_PROC_UNUSED(GLboolean, glAreTexturesResident, + (GLsizei, const GLuint *, GLboolean *)) +SDL_PROC_UNUSED(void, glArrayElement, (GLint)) +SDL_PROC(void, glBegin, (GLenum)) +SDL_PROC(void, glBindTexture, (GLenum, GLuint)) +SDL_PROC_UNUSED(void, glBitmap, + (GLsizei, GLsizei, GLfloat, GLfloat, GLfloat, GLfloat, + const GLubyte *)) +SDL_PROC(void, glBlendEquation, (GLenum)) +SDL_PROC_UNUSED(void, glBlendFunc, (GLenum, GLenum)) +SDL_PROC(void, glBlendFuncSeparate, (GLenum, GLenum, GLenum, GLenum)) +SDL_PROC_UNUSED(void, glCallList, (GLuint)) +SDL_PROC_UNUSED(void, glCallLists, (GLsizei, GLenum, const GLvoid *)) +SDL_PROC(void, glClear, (GLbitfield)) +SDL_PROC_UNUSED(void, glClearAccum, (GLfloat, GLfloat, GLfloat, GLfloat)) +SDL_PROC(void, glClearColor, (GLclampf, GLclampf, GLclampf, GLclampf)) +SDL_PROC_UNUSED(void, glClearDepth, (GLclampd)) +SDL_PROC_UNUSED(void, glClearIndex, (GLfloat)) +SDL_PROC_UNUSED(void, glClearStencil, (GLint)) +SDL_PROC_UNUSED(void, glClipPlane, (GLenum, const GLdouble *)) +SDL_PROC_UNUSED(void, glColor3b, (GLbyte, GLbyte, GLbyte)) +SDL_PROC_UNUSED(void, glColor3bv, (const GLbyte *)) +SDL_PROC_UNUSED(void, glColor3d, (GLdouble, GLdouble, GLdouble)) +SDL_PROC_UNUSED(void, glColor3dv, (const GLdouble *)) +SDL_PROC_UNUSED(void, glColor3f, (GLfloat, GLfloat, GLfloat)) +SDL_PROC(void, glColor3fv, (const GLfloat *)) +SDL_PROC_UNUSED(void, glColor3i, (GLint, GLint, GLint)) +SDL_PROC_UNUSED(void, glColor3iv, (const GLint *)) +SDL_PROC_UNUSED(void, glColor3s, (GLshort, GLshort, GLshort)) +SDL_PROC_UNUSED(void, glColor3sv, (const GLshort *)) +SDL_PROC_UNUSED(void, glColor3ub, (GLubyte, GLubyte, GLubyte)) +SDL_PROC_UNUSED(void, glColor3ubv, (const GLubyte *)) +SDL_PROC_UNUSED(void, glColor3ui, (GLuint, GLuint, GLuint)) +SDL_PROC_UNUSED(void, glColor3uiv, (const GLuint *)) +SDL_PROC_UNUSED(void, glColor3us, (GLushort, GLushort, GLushort)) +SDL_PROC_UNUSED(void, glColor3usv, (const GLushort *)) +SDL_PROC_UNUSED(void, glColor4b, (GLbyte, GLbyte, GLbyte, GLbyte)) +SDL_PROC_UNUSED(void, glColor4bv, (const GLbyte *)) +SDL_PROC_UNUSED(void, glColor4d, (GLdouble, GLdouble, GLdouble, GLdouble)) +SDL_PROC_UNUSED(void, glColor4dv, (const GLdouble *)) +SDL_PROC(void, glColor4f, (GLfloat, GLfloat, GLfloat, GLfloat)) +SDL_PROC_UNUSED(void, glColor4fv, (const GLfloat *)) +SDL_PROC_UNUSED(void, glColor4i, (GLint, GLint, GLint, GLint)) +SDL_PROC_UNUSED(void, glColor4iv, (const GLint *)) +SDL_PROC_UNUSED(void, glColor4s, (GLshort, GLshort, GLshort, GLshort)) +SDL_PROC_UNUSED(void, glColor4sv, (const GLshort *)) +SDL_PROC_UNUSED(void, glColor4ub, + (GLubyte red, GLubyte green, GLubyte blue, GLubyte alpha)) +SDL_PROC_UNUSED(void, glColor4ubv, (const GLubyte * v)) +SDL_PROC_UNUSED(void, glColor4ui, + (GLuint red, GLuint green, GLuint blue, GLuint alpha)) +SDL_PROC_UNUSED(void, glColor4uiv, (const GLuint * v)) +SDL_PROC_UNUSED(void, glColor4us, + (GLushort red, GLushort green, GLushort blue, GLushort alpha)) +SDL_PROC_UNUSED(void, glColor4usv, (const GLushort * v)) +SDL_PROC_UNUSED(void, glColorMask, + (GLboolean red, GLboolean green, GLboolean blue, + GLboolean alpha)) +SDL_PROC_UNUSED(void, glColorMaterial, (GLenum face, GLenum mode)) +SDL_PROC_UNUSED(void, glColorPointer, + (GLint size, GLenum type, GLsizei stride, + const GLvoid * pointer)) +SDL_PROC_UNUSED(void, glCopyPixels, + (GLint x, GLint y, GLsizei width, GLsizei height, + GLenum type)) +SDL_PROC_UNUSED(void, glCopyTexImage1D, + (GLenum target, GLint level, GLenum internalFormat, GLint x, + GLint y, GLsizei width, GLint border)) +SDL_PROC_UNUSED(void, glCopyTexImage2D, + (GLenum target, GLint level, GLenum internalFormat, GLint x, + GLint y, GLsizei width, GLsizei height, GLint border)) +SDL_PROC_UNUSED(void, glCopyTexSubImage1D, + (GLenum target, GLint level, GLint xoffset, GLint x, GLint y, + GLsizei width)) +SDL_PROC_UNUSED(void, glCopyTexSubImage2D, + (GLenum target, GLint level, GLint xoffset, GLint yoffset, + GLint x, GLint y, GLsizei width, GLsizei height)) +SDL_PROC_UNUSED(void, glCullFace, (GLenum mode)) +SDL_PROC_UNUSED(void, glDeleteLists, (GLuint list, GLsizei range)) +SDL_PROC(void, glDeleteTextures, (GLsizei n, const GLuint * textures)) +SDL_PROC(void, glDepthFunc, (GLenum func)) +SDL_PROC_UNUSED(void, glDepthMask, (GLboolean flag)) +SDL_PROC_UNUSED(void, glDepthRange, (GLclampd zNear, GLclampd zFar)) +SDL_PROC(void, glDisable, (GLenum cap)) +SDL_PROC_UNUSED(void, glDisableClientState, (GLenum array)) +SDL_PROC_UNUSED(void, glDrawArrays, (GLenum mode, GLint first, GLsizei count)) +SDL_PROC_UNUSED(void, glDrawBuffer, (GLenum mode)) +SDL_PROC_UNUSED(void, glDrawElements, + (GLenum mode, GLsizei count, GLenum type, + const GLvoid * indices)) +SDL_PROC(void, glDrawPixels, + (GLsizei width, GLsizei height, GLenum format, GLenum type, + const GLvoid * pixels)) +SDL_PROC_UNUSED(void, glEdgeFlag, (GLboolean flag)) +SDL_PROC_UNUSED(void, glEdgeFlagPointer, + (GLsizei stride, const GLvoid * pointer)) +SDL_PROC_UNUSED(void, glEdgeFlagv, (const GLboolean * flag)) +SDL_PROC(void, glEnable, (GLenum cap)) +SDL_PROC_UNUSED(void, glEnableClientState, (GLenum array)) +SDL_PROC(void, glEnd, (void)) +SDL_PROC_UNUSED(void, glEndList, (void)) +SDL_PROC_UNUSED(void, glEvalCoord1d, (GLdouble u)) +SDL_PROC_UNUSED(void, glEvalCoord1dv, (const GLdouble * u)) +SDL_PROC_UNUSED(void, glEvalCoord1f, (GLfloat u)) +SDL_PROC_UNUSED(void, glEvalCoord1fv, (const GLfloat * u)) +SDL_PROC_UNUSED(void, glEvalCoord2d, (GLdouble u, GLdouble v)) +SDL_PROC_UNUSED(void, glEvalCoord2dv, (const GLdouble * u)) +SDL_PROC_UNUSED(void, glEvalCoord2f, (GLfloat u, GLfloat v)) +SDL_PROC_UNUSED(void, glEvalCoord2fv, (const GLfloat * u)) +SDL_PROC_UNUSED(void, glEvalMesh1, (GLenum mode, GLint i1, GLint i2)) +SDL_PROC_UNUSED(void, glEvalMesh2, + (GLenum mode, GLint i1, GLint i2, GLint j1, GLint j2)) +SDL_PROC_UNUSED(void, glEvalPoint1, (GLint i)) +SDL_PROC_UNUSED(void, glEvalPoint2, (GLint i, GLint j)) +SDL_PROC_UNUSED(void, glFeedbackBuffer, + (GLsizei size, GLenum type, GLfloat * buffer)) +SDL_PROC_UNUSED(void, glFinish, (void)) +SDL_PROC_UNUSED(void, glFlush, (void)) +SDL_PROC_UNUSED(void, glFogf, (GLenum pname, GLfloat param)) +SDL_PROC_UNUSED(void, glFogfv, (GLenum pname, const GLfloat * params)) +SDL_PROC_UNUSED(void, glFogi, (GLenum pname, GLint param)) +SDL_PROC_UNUSED(void, glFogiv, (GLenum pname, const GLint * params)) +SDL_PROC_UNUSED(void, glFrontFace, (GLenum mode)) +SDL_PROC_UNUSED(void, glFrustum, + (GLdouble left, GLdouble right, GLdouble bottom, + GLdouble top, GLdouble zNear, GLdouble zFar)) +SDL_PROC_UNUSED(GLuint, glGenLists, (GLsizei range)) +SDL_PROC(void, glGenTextures, (GLsizei n, GLuint * textures)) +SDL_PROC_UNUSED(void, glGetBooleanv, (GLenum pname, GLboolean * params)) +SDL_PROC_UNUSED(void, glGetClipPlane, (GLenum plane, GLdouble * equation)) +SDL_PROC_UNUSED(void, glGetDoublev, (GLenum pname, GLdouble * params)) +SDL_PROC(GLenum, glGetError, (void)) +SDL_PROC_UNUSED(void, glGetFloatv, (GLenum pname, GLfloat * params)) +SDL_PROC(void, glGetIntegerv, (GLenum pname, GLint * params)) +SDL_PROC_UNUSED(void, glGetLightfv, + (GLenum light, GLenum pname, GLfloat * params)) +SDL_PROC_UNUSED(void, glGetLightiv, + (GLenum light, GLenum pname, GLint * params)) +SDL_PROC_UNUSED(void, glGetMapdv, (GLenum target, GLenum query, GLdouble * v)) +SDL_PROC_UNUSED(void, glGetMapfv, (GLenum target, GLenum query, GLfloat * v)) +SDL_PROC_UNUSED(void, glGetMapiv, (GLenum target, GLenum query, GLint * v)) +SDL_PROC_UNUSED(void, glGetMaterialfv, + (GLenum face, GLenum pname, GLfloat * params)) +SDL_PROC_UNUSED(void, glGetMaterialiv, + (GLenum face, GLenum pname, GLint * params)) +SDL_PROC_UNUSED(void, glGetPixelMapfv, (GLenum map, GLfloat * values)) +SDL_PROC_UNUSED(void, glGetPixelMapuiv, (GLenum map, GLuint * values)) +SDL_PROC_UNUSED(void, glGetPixelMapusv, (GLenum map, GLushort * values)) +SDL_PROC(void, glGetPointerv, (GLenum pname, GLvoid * *params)) +SDL_PROC_UNUSED(void, glGetPolygonStipple, (GLubyte * mask)) +SDL_PROC(const GLubyte *, glGetString, (GLenum name)) +SDL_PROC_UNUSED(void, glGetTexEnvfv, + (GLenum target, GLenum pname, GLfloat * params)) +SDL_PROC_UNUSED(void, glGetTexEnviv, + (GLenum target, GLenum pname, GLint * params)) +SDL_PROC_UNUSED(void, glGetTexGendv, + (GLenum coord, GLenum pname, GLdouble * params)) +SDL_PROC_UNUSED(void, glGetTexGenfv, + (GLenum coord, GLenum pname, GLfloat * params)) +SDL_PROC_UNUSED(void, glGetTexGeniv, + (GLenum coord, GLenum pname, GLint * params)) +SDL_PROC_UNUSED(void, glGetTexImage, + (GLenum target, GLint level, GLenum format, GLenum type, + GLvoid * pixels)) +SDL_PROC_UNUSED(void, glGetTexLevelParameterfv, + (GLenum target, GLint level, GLenum pname, GLfloat * params)) +SDL_PROC_UNUSED(void, glGetTexLevelParameteriv, + (GLenum target, GLint level, GLenum pname, GLint * params)) +SDL_PROC_UNUSED(void, glGetTexParameterfv, + (GLenum target, GLenum pname, GLfloat * params)) +SDL_PROC_UNUSED(void, glGetTexParameteriv, + (GLenum target, GLenum pname, GLint * params)) +SDL_PROC_UNUSED(void, glHint, (GLenum target, GLenum mode)) +SDL_PROC_UNUSED(void, glIndexMask, (GLuint mask)) +SDL_PROC_UNUSED(void, glIndexPointer, + (GLenum type, GLsizei stride, const GLvoid * pointer)) +SDL_PROC_UNUSED(void, glIndexd, (GLdouble c)) +SDL_PROC_UNUSED(void, glIndexdv, (const GLdouble * c)) +SDL_PROC_UNUSED(void, glIndexf, (GLfloat c)) +SDL_PROC_UNUSED(void, glIndexfv, (const GLfloat * c)) +SDL_PROC_UNUSED(void, glIndexi, (GLint c)) +SDL_PROC_UNUSED(void, glIndexiv, (const GLint * c)) +SDL_PROC_UNUSED(void, glIndexs, (GLshort c)) +SDL_PROC_UNUSED(void, glIndexsv, (const GLshort * c)) +SDL_PROC_UNUSED(void, glIndexub, (GLubyte c)) +SDL_PROC_UNUSED(void, glIndexubv, (const GLubyte * c)) +SDL_PROC_UNUSED(void, glInitNames, (void)) +SDL_PROC_UNUSED(void, glInterleavedArrays, + (GLenum format, GLsizei stride, const GLvoid * pointer)) +SDL_PROC_UNUSED(GLboolean, glIsEnabled, (GLenum cap)) +SDL_PROC_UNUSED(GLboolean, glIsList, (GLuint list)) +SDL_PROC_UNUSED(GLboolean, glIsTexture, (GLuint texture)) +SDL_PROC_UNUSED(void, glLightModelf, (GLenum pname, GLfloat param)) +SDL_PROC_UNUSED(void, glLightModelfv, (GLenum pname, const GLfloat * params)) +SDL_PROC_UNUSED(void, glLightModeli, (GLenum pname, GLint param)) +SDL_PROC_UNUSED(void, glLightModeliv, (GLenum pname, const GLint * params)) +SDL_PROC_UNUSED(void, glLightf, (GLenum light, GLenum pname, GLfloat param)) +SDL_PROC_UNUSED(void, glLightfv, + (GLenum light, GLenum pname, const GLfloat * params)) +SDL_PROC_UNUSED(void, glLighti, (GLenum light, GLenum pname, GLint param)) +SDL_PROC_UNUSED(void, glLightiv, + (GLenum light, GLenum pname, const GLint * params)) +SDL_PROC_UNUSED(void, glLineStipple, (GLint factor, GLushort pattern)) +SDL_PROC(void, glLineWidth, (GLfloat width)) +SDL_PROC_UNUSED(void, glListBase, (GLuint base)) +SDL_PROC(void, glLoadIdentity, (void)) +SDL_PROC_UNUSED(void, glLoadMatrixd, (const GLdouble * m)) +SDL_PROC_UNUSED(void, glLoadMatrixf, (const GLfloat * m)) +SDL_PROC_UNUSED(void, glLoadName, (GLuint name)) +SDL_PROC_UNUSED(void, glLogicOp, (GLenum opcode)) +SDL_PROC_UNUSED(void, glMap1d, + (GLenum target, GLdouble u1, GLdouble u2, GLint stride, + GLint order, const GLdouble * points)) +SDL_PROC_UNUSED(void, glMap1f, + (GLenum target, GLfloat u1, GLfloat u2, GLint stride, + GLint order, const GLfloat * points)) +SDL_PROC_UNUSED(void, glMap2d, + (GLenum target, GLdouble u1, GLdouble u2, GLint ustride, + GLint uorder, GLdouble v1, GLdouble v2, GLint vstride, + GLint vorder, const GLdouble * points)) +SDL_PROC_UNUSED(void, glMap2f, + (GLenum target, GLfloat u1, GLfloat u2, GLint ustride, + GLint uorder, GLfloat v1, GLfloat v2, GLint vstride, + GLint vorder, const GLfloat * points)) +SDL_PROC_UNUSED(void, glMapGrid1d, (GLint un, GLdouble u1, GLdouble u2)) +SDL_PROC_UNUSED(void, glMapGrid1f, (GLint un, GLfloat u1, GLfloat u2)) +SDL_PROC_UNUSED(void, glMapGrid2d, + (GLint un, GLdouble u1, GLdouble u2, GLint vn, GLdouble v1, + GLdouble v2)) +SDL_PROC_UNUSED(void, glMapGrid2f, + (GLint un, GLfloat u1, GLfloat u2, GLint vn, GLfloat v1, + GLfloat v2)) +SDL_PROC_UNUSED(void, glMaterialf, (GLenum face, GLenum pname, GLfloat param)) +SDL_PROC_UNUSED(void, glMaterialfv, + (GLenum face, GLenum pname, const GLfloat * params)) +SDL_PROC_UNUSED(void, glMateriali, (GLenum face, GLenum pname, GLint param)) +SDL_PROC_UNUSED(void, glMaterialiv, + (GLenum face, GLenum pname, const GLint * params)) +SDL_PROC(void, glMatrixMode, (GLenum mode)) +SDL_PROC_UNUSED(void, glMultMatrixd, (const GLdouble * m)) +SDL_PROC_UNUSED(void, glMultMatrixf, (const GLfloat * m)) +SDL_PROC_UNUSED(void, glNewList, (GLuint list, GLenum mode)) +SDL_PROC_UNUSED(void, glNormal3b, (GLbyte nx, GLbyte ny, GLbyte nz)) +SDL_PROC_UNUSED(void, glNormal3bv, (const GLbyte * v)) +SDL_PROC_UNUSED(void, glNormal3d, (GLdouble nx, GLdouble ny, GLdouble nz)) +SDL_PROC_UNUSED(void, glNormal3dv, (const GLdouble * v)) +SDL_PROC_UNUSED(void, glNormal3f, (GLfloat nx, GLfloat ny, GLfloat nz)) +SDL_PROC_UNUSED(void, glNormal3fv, (const GLfloat * v)) +SDL_PROC_UNUSED(void, glNormal3i, (GLint nx, GLint ny, GLint nz)) +SDL_PROC_UNUSED(void, glNormal3iv, (const GLint * v)) +SDL_PROC_UNUSED(void, glNormal3s, (GLshort nx, GLshort ny, GLshort nz)) +SDL_PROC_UNUSED(void, glNormal3sv, (const GLshort * v)) +SDL_PROC_UNUSED(void, glNormalPointer, + (GLenum type, GLsizei stride, const GLvoid * pointer)) +SDL_PROC(void, glOrtho, + (GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, + GLdouble zNear, GLdouble zFar)) +SDL_PROC_UNUSED(void, glPassThrough, (GLfloat token)) +SDL_PROC_UNUSED(void, glPixelMapfv, + (GLenum map, GLsizei mapsize, const GLfloat * values)) +SDL_PROC_UNUSED(void, glPixelMapuiv, + (GLenum map, GLsizei mapsize, const GLuint * values)) +SDL_PROC_UNUSED(void, glPixelMapusv, + (GLenum map, GLsizei mapsize, const GLushort * values)) +SDL_PROC_UNUSED(void, glPixelStoref, (GLenum pname, GLfloat param)) +SDL_PROC(void, glPixelStorei, (GLenum pname, GLint param)) +SDL_PROC_UNUSED(void, glPixelTransferf, (GLenum pname, GLfloat param)) +SDL_PROC_UNUSED(void, glPixelTransferi, (GLenum pname, GLint param)) +SDL_PROC_UNUSED(void, glPixelZoom, (GLfloat xfactor, GLfloat yfactor)) +SDL_PROC(void, glPointSize, (GLfloat size)) +SDL_PROC_UNUSED(void, glPolygonMode, (GLenum face, GLenum mode)) +SDL_PROC_UNUSED(void, glPolygonOffset, (GLfloat factor, GLfloat units)) +SDL_PROC_UNUSED(void, glPolygonStipple, (const GLubyte * mask)) +SDL_PROC_UNUSED(void, glPopAttrib, (void)) +SDL_PROC_UNUSED(void, glPopClientAttrib, (void)) +SDL_PROC(void, glPopMatrix, (void)) +SDL_PROC_UNUSED(void, glPopName, (void)) +SDL_PROC_UNUSED(void, glPrioritizeTextures, + (GLsizei n, const GLuint * textures, + const GLclampf * priorities)) +SDL_PROC_UNUSED(void, glPushAttrib, (GLbitfield mask)) +SDL_PROC_UNUSED(void, glPushClientAttrib, (GLbitfield mask)) +SDL_PROC(void, glPushMatrix, (void)) +SDL_PROC_UNUSED(void, glPushName, (GLuint name)) +SDL_PROC_UNUSED(void, glRasterPos2d, (GLdouble x, GLdouble y)) +SDL_PROC_UNUSED(void, glRasterPos2dv, (const GLdouble * v)) +SDL_PROC_UNUSED(void, glRasterPos2f, (GLfloat x, GLfloat y)) +SDL_PROC_UNUSED(void, glRasterPos2fv, (const GLfloat * v)) +SDL_PROC(void, glRasterPos2i, (GLint x, GLint y)) +SDL_PROC_UNUSED(void, glRasterPos2iv, (const GLint * v)) +SDL_PROC_UNUSED(void, glRasterPos2s, (GLshort x, GLshort y)) +SDL_PROC_UNUSED(void, glRasterPos2sv, (const GLshort * v)) +SDL_PROC_UNUSED(void, glRasterPos3d, (GLdouble x, GLdouble y, GLdouble z)) +SDL_PROC_UNUSED(void, glRasterPos3dv, (const GLdouble * v)) +SDL_PROC_UNUSED(void, glRasterPos3f, (GLfloat x, GLfloat y, GLfloat z)) +SDL_PROC_UNUSED(void, glRasterPos3fv, (const GLfloat * v)) +SDL_PROC_UNUSED(void, glRasterPos3i, (GLint x, GLint y, GLint z)) +SDL_PROC_UNUSED(void, glRasterPos3iv, (const GLint * v)) +SDL_PROC_UNUSED(void, glRasterPos3s, (GLshort x, GLshort y, GLshort z)) +SDL_PROC_UNUSED(void, glRasterPos3sv, (const GLshort * v)) +SDL_PROC_UNUSED(void, glRasterPos4d, + (GLdouble x, GLdouble y, GLdouble z, GLdouble w)) +SDL_PROC_UNUSED(void, glRasterPos4dv, (const GLdouble * v)) +SDL_PROC_UNUSED(void, glRasterPos4f, + (GLfloat x, GLfloat y, GLfloat z, GLfloat w)) +SDL_PROC_UNUSED(void, glRasterPos4fv, (const GLfloat * v)) +SDL_PROC_UNUSED(void, glRasterPos4i, (GLint x, GLint y, GLint z, GLint w)) +SDL_PROC_UNUSED(void, glRasterPos4iv, (const GLint * v)) +SDL_PROC_UNUSED(void, glRasterPos4s, + (GLshort x, GLshort y, GLshort z, GLshort w)) +SDL_PROC_UNUSED(void, glRasterPos4sv, (const GLshort * v)) +SDL_PROC(void, glReadBuffer, (GLenum mode)) +SDL_PROC(void, glReadPixels, + (GLint x, GLint y, GLsizei width, GLsizei height, + GLenum format, GLenum type, GLvoid * pixels)) +SDL_PROC_UNUSED(void, glRectd, + (GLdouble x1, GLdouble y1, GLdouble x2, GLdouble y2)) +SDL_PROC_UNUSED(void, glRectdv, (const GLdouble * v1, const GLdouble * v2)) +SDL_PROC(void, glRectf, + (GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2)) +SDL_PROC_UNUSED(void, glRectfv, (const GLfloat * v1, const GLfloat * v2)) +SDL_PROC_UNUSED(void, glRecti, (GLint x1, GLint y1, GLint x2, GLint y2)) +SDL_PROC_UNUSED(void, glRectiv, (const GLint * v1, const GLint * v2)) +SDL_PROC_UNUSED(void, glRects, + (GLshort x1, GLshort y1, GLshort x2, GLshort y2)) +SDL_PROC_UNUSED(void, glRectsv, (const GLshort * v1, const GLshort * v2)) +SDL_PROC_UNUSED(GLint, glRenderMode, (GLenum mode)) +SDL_PROC(void, glRotated, + (GLdouble angle, GLdouble x, GLdouble y, GLdouble z)) +SDL_PROC(void, glRotatef, + (GLfloat angle, GLfloat x, GLfloat y, GLfloat z)) +SDL_PROC_UNUSED(void, glScaled, (GLdouble x, GLdouble y, GLdouble z)) +SDL_PROC_UNUSED(void, glScalef, (GLfloat x, GLfloat y, GLfloat z)) +SDL_PROC(void, glScissor, (GLint x, GLint y, GLsizei width, GLsizei height)) +SDL_PROC_UNUSED(void, glSelectBuffer, (GLsizei size, GLuint * buffer)) +SDL_PROC(void, glShadeModel, (GLenum mode)) +SDL_PROC_UNUSED(void, glStencilFunc, (GLenum func, GLint ref, GLuint mask)) +SDL_PROC_UNUSED(void, glStencilMask, (GLuint mask)) +SDL_PROC_UNUSED(void, glStencilOp, (GLenum fail, GLenum zfail, GLenum zpass)) +SDL_PROC_UNUSED(void, glTexCoord1d, (GLdouble s)) +SDL_PROC_UNUSED(void, glTexCoord1dv, (const GLdouble * v)) +SDL_PROC_UNUSED(void, glTexCoord1f, (GLfloat s)) +SDL_PROC_UNUSED(void, glTexCoord1fv, (const GLfloat * v)) +SDL_PROC_UNUSED(void, glTexCoord1i, (GLint s)) +SDL_PROC_UNUSED(void, glTexCoord1iv, (const GLint * v)) +SDL_PROC_UNUSED(void, glTexCoord1s, (GLshort s)) +SDL_PROC_UNUSED(void, glTexCoord1sv, (const GLshort * v)) +SDL_PROC_UNUSED(void, glTexCoord2d, (GLdouble s, GLdouble t)) +SDL_PROC_UNUSED(void, glTexCoord2dv, (const GLdouble * v)) +SDL_PROC(void, glTexCoord2f, (GLfloat s, GLfloat t)) +SDL_PROC_UNUSED(void, glTexCoord2fv, (const GLfloat * v)) +SDL_PROC_UNUSED(void, glTexCoord2i, (GLint s, GLint t)) +SDL_PROC_UNUSED(void, glTexCoord2iv, (const GLint * v)) +SDL_PROC_UNUSED(void, glTexCoord2s, (GLshort s, GLshort t)) +SDL_PROC_UNUSED(void, glTexCoord2sv, (const GLshort * v)) +SDL_PROC_UNUSED(void, glTexCoord3d, (GLdouble s, GLdouble t, GLdouble r)) +SDL_PROC_UNUSED(void, glTexCoord3dv, (const GLdouble * v)) +SDL_PROC_UNUSED(void, glTexCoord3f, (GLfloat s, GLfloat t, GLfloat r)) +SDL_PROC_UNUSED(void, glTexCoord3fv, (const GLfloat * v)) +SDL_PROC_UNUSED(void, glTexCoord3i, (GLint s, GLint t, GLint r)) +SDL_PROC_UNUSED(void, glTexCoord3iv, (const GLint * v)) +SDL_PROC_UNUSED(void, glTexCoord3s, (GLshort s, GLshort t, GLshort r)) +SDL_PROC_UNUSED(void, glTexCoord3sv, (const GLshort * v)) +SDL_PROC_UNUSED(void, glTexCoord4d, + (GLdouble s, GLdouble t, GLdouble r, GLdouble q)) +SDL_PROC_UNUSED(void, glTexCoord4dv, (const GLdouble * v)) +SDL_PROC_UNUSED(void, glTexCoord4f, + (GLfloat s, GLfloat t, GLfloat r, GLfloat q)) +SDL_PROC_UNUSED(void, glTexCoord4fv, (const GLfloat * v)) +SDL_PROC_UNUSED(void, glTexCoord4i, (GLint s, GLint t, GLint r, GLint q)) +SDL_PROC_UNUSED(void, glTexCoord4iv, (const GLint * v)) +SDL_PROC_UNUSED(void, glTexCoord4s, + (GLshort s, GLshort t, GLshort r, GLshort q)) +SDL_PROC_UNUSED(void, glTexCoord4sv, (const GLshort * v)) +SDL_PROC_UNUSED(void, glTexCoordPointer, + (GLint size, GLenum type, GLsizei stride, + const GLvoid * pointer)) +SDL_PROC(void, glTexEnvf, (GLenum target, GLenum pname, GLfloat param)) +SDL_PROC_UNUSED(void, glTexEnvfv, + (GLenum target, GLenum pname, const GLfloat * params)) +SDL_PROC_UNUSED(void, glTexEnvi, (GLenum target, GLenum pname, GLint param)) +SDL_PROC_UNUSED(void, glTexEnviv, + (GLenum target, GLenum pname, const GLint * params)) +SDL_PROC_UNUSED(void, glTexGend, (GLenum coord, GLenum pname, GLdouble param)) +SDL_PROC_UNUSED(void, glTexGendv, + (GLenum coord, GLenum pname, const GLdouble * params)) +SDL_PROC_UNUSED(void, glTexGenf, (GLenum coord, GLenum pname, GLfloat param)) +SDL_PROC_UNUSED(void, glTexGenfv, + (GLenum coord, GLenum pname, const GLfloat * params)) +SDL_PROC_UNUSED(void, glTexGeni, (GLenum coord, GLenum pname, GLint param)) +SDL_PROC_UNUSED(void, glTexGeniv, + (GLenum coord, GLenum pname, const GLint * params)) +SDL_PROC_UNUSED(void, glTexImage1D, + (GLenum target, GLint level, GLint internalformat, + GLsizei width, GLint border, GLenum format, GLenum type, + const GLvoid * pixels)) +SDL_PROC(void, glTexImage2D, + (GLenum target, GLint level, GLint internalformat, GLsizei width, + GLsizei height, GLint border, GLenum format, GLenum type, + const GLvoid * pixels)) +SDL_PROC_UNUSED(void, glTexParameterf, + (GLenum target, GLenum pname, GLfloat param)) +SDL_PROC_UNUSED(void, glTexParameterfv, + (GLenum target, GLenum pname, const GLfloat * params)) +SDL_PROC(void, glTexParameteri, (GLenum target, GLenum pname, GLint param)) +SDL_PROC_UNUSED(void, glTexParameteriv, + (GLenum target, GLenum pname, const GLint * params)) +SDL_PROC_UNUSED(void, glTexSubImage1D, + (GLenum target, GLint level, GLint xoffset, GLsizei width, + GLenum format, GLenum type, const GLvoid * pixels)) +SDL_PROC(void, glTexSubImage2D, + (GLenum target, GLint level, GLint xoffset, GLint yoffset, + GLsizei width, GLsizei height, GLenum format, GLenum type, + const GLvoid * pixels)) +SDL_PROC_UNUSED(void, glTranslated, (GLdouble x, GLdouble y, GLdouble z)) +SDL_PROC(void, glTranslatef, (GLfloat x, GLfloat y, GLfloat z)) +SDL_PROC_UNUSED(void, glVertex2d, (GLdouble x, GLdouble y)) +SDL_PROC_UNUSED(void, glVertex2dv, (const GLdouble * v)) +SDL_PROC(void, glVertex2f, (GLfloat x, GLfloat y)) +SDL_PROC_UNUSED(void, glVertex2fv, (const GLfloat * v)) +SDL_PROC_UNUSED(void, glVertex2i, (GLint x, GLint y)) +SDL_PROC_UNUSED(void, glVertex2iv, (const GLint * v)) +SDL_PROC_UNUSED(void, glVertex2s, (GLshort x, GLshort y)) +SDL_PROC_UNUSED(void, glVertex2sv, (const GLshort * v)) +SDL_PROC_UNUSED(void, glVertex3d, (GLdouble x, GLdouble y, GLdouble z)) +SDL_PROC_UNUSED(void, glVertex3dv, (const GLdouble * v)) +SDL_PROC_UNUSED(void, glVertex3f, (GLfloat x, GLfloat y, GLfloat z)) +SDL_PROC(void, glVertex3fv, (const GLfloat * v)) +SDL_PROC_UNUSED(void, glVertex3i, (GLint x, GLint y, GLint z)) +SDL_PROC_UNUSED(void, glVertex3iv, (const GLint * v)) +SDL_PROC_UNUSED(void, glVertex3s, (GLshort x, GLshort y, GLshort z)) +SDL_PROC_UNUSED(void, glVertex3sv, (const GLshort * v)) +SDL_PROC_UNUSED(void, glVertex4d, + (GLdouble x, GLdouble y, GLdouble z, GLdouble w)) +SDL_PROC_UNUSED(void, glVertex4dv, (const GLdouble * v)) +SDL_PROC_UNUSED(void, glVertex4f, + (GLfloat x, GLfloat y, GLfloat z, GLfloat w)) +SDL_PROC_UNUSED(void, glVertex4fv, (const GLfloat * v)) +SDL_PROC_UNUSED(void, glVertex4i, (GLint x, GLint y, GLint z, GLint w)) +SDL_PROC_UNUSED(void, glVertex4iv, (const GLint * v)) +SDL_PROC_UNUSED(void, glVertex4s, + (GLshort x, GLshort y, GLshort z, GLshort w)) +SDL_PROC_UNUSED(void, glVertex4sv, (const GLshort * v)) +SDL_PROC_UNUSED(void, glVertexPointer, + (GLint size, GLenum type, GLsizei stride, + const GLvoid * pointer)) +SDL_PROC(void, glViewport, (GLint x, GLint y, GLsizei width, GLsizei height)) + +/* vi: set ts=4 sw=4 expandtab: */ diff --git a/source/3rd-party/SDL2/src/render/opengl/SDL_render_gl.c b/source/3rd-party/SDL2/src/render/opengl/SDL_render_gl.c new file mode 100644 index 0000000..f3e8326 --- /dev/null +++ b/source/3rd-party/SDL2/src/render/opengl/SDL_render_gl.c @@ -0,0 +1,1678 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ +#include "../../SDL_internal.h" + +#if SDL_VIDEO_RENDER_OGL && !SDL_RENDER_DISABLED + +#include "SDL_hints.h" +#include "SDL_log.h" +#include "SDL_assert.h" +#include "SDL_opengl.h" +#include "../SDL_sysrender.h" +#include "SDL_shaders_gl.h" + +#ifdef __MACOSX__ +#include <OpenGL/OpenGL.h> +#endif + +/* To prevent unnecessary window recreation, + * these should match the defaults selected in SDL_GL_ResetAttributes + */ + +#define RENDERER_CONTEXT_MAJOR 2 +#define RENDERER_CONTEXT_MINOR 1 + +/* OpenGL renderer implementation */ + +/* Details on optimizing the texture path on Mac OS X: + http://developer.apple.com/library/mac/#documentation/GraphicsImaging/Conceptual/OpenGL-MacProgGuide/opengl_texturedata/opengl_texturedata.html +*/ + +/* Used to re-create the window with OpenGL capability */ +extern int SDL_RecreateWindow(SDL_Window * window, Uint32 flags); + +static const float inv255f = 1.0f / 255.0f; + +static SDL_Renderer *GL_CreateRenderer(SDL_Window * window, Uint32 flags); +static void GL_WindowEvent(SDL_Renderer * renderer, + const SDL_WindowEvent *event); +static int GL_GetOutputSize(SDL_Renderer * renderer, int *w, int *h); +static SDL_bool GL_SupportsBlendMode(SDL_Renderer * renderer, SDL_BlendMode blendMode); +static int GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture); +static int GL_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * rect, const void *pixels, + int pitch); +static int GL_UpdateTextureYUV(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * rect, + const Uint8 *Yplane, int Ypitch, + const Uint8 *Uplane, int Upitch, + const Uint8 *Vplane, int Vpitch); +static int GL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * rect, void **pixels, int *pitch); +static void GL_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture); +static int GL_SetRenderTarget(SDL_Renderer * renderer, SDL_Texture * texture); +static int GL_UpdateViewport(SDL_Renderer * renderer); +static int GL_UpdateClipRect(SDL_Renderer * renderer); +static int GL_RenderClear(SDL_Renderer * renderer); +static int GL_RenderDrawPoints(SDL_Renderer * renderer, + const SDL_FPoint * points, int count); +static int GL_RenderDrawLines(SDL_Renderer * renderer, + const SDL_FPoint * points, int count); +static int GL_RenderFillRects(SDL_Renderer * renderer, + const SDL_FRect * rects, int count); +static int GL_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * srcrect, const SDL_FRect * dstrect); +static int GL_RenderCopyEx(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * srcrect, const SDL_FRect * dstrect, + const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip); +static int GL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect, + Uint32 pixel_format, void * pixels, int pitch); +static void GL_RenderPresent(SDL_Renderer * renderer); +static void GL_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture); +static void GL_DestroyRenderer(SDL_Renderer * renderer); +static int GL_BindTexture (SDL_Renderer * renderer, SDL_Texture *texture, float *texw, float *texh); +static int GL_UnbindTexture (SDL_Renderer * renderer, SDL_Texture *texture); + +SDL_RenderDriver GL_RenderDriver = { + GL_CreateRenderer, + { + "opengl", + (SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_TARGETTEXTURE), + 1, + {SDL_PIXELFORMAT_ARGB8888}, + 0, + 0} +}; + +typedef struct GL_FBOList GL_FBOList; + +struct GL_FBOList +{ + Uint32 w, h; + GLuint FBO; + GL_FBOList *next; +}; + +typedef struct +{ + SDL_GLContext context; + + SDL_bool debug_enabled; + SDL_bool GL_ARB_debug_output_supported; + int errors; + char **error_messages; + GLDEBUGPROCARB next_error_callback; + GLvoid *next_error_userparam; + + SDL_bool GL_ARB_texture_non_power_of_two_supported; + SDL_bool GL_ARB_texture_rectangle_supported; + struct { + GL_Shader shader; + Uint32 color; + SDL_BlendMode blendMode; + } current; + + SDL_bool GL_EXT_framebuffer_object_supported; + GL_FBOList *framebuffers; + + /* OpenGL functions */ +#define SDL_PROC(ret,func,params) ret (APIENTRY *func) params; +#include "SDL_glfuncs.h" +#undef SDL_PROC + + /* Multitexture support */ + SDL_bool GL_ARB_multitexture_supported; + PFNGLACTIVETEXTUREARBPROC glActiveTextureARB; + GLint num_texture_units; + + PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT; + PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffersEXT; + PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT; + PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebufferEXT; + PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatusEXT; + + /* Shader support */ + GL_ShaderContext *shaders; + +} GL_RenderData; + +typedef struct +{ + GLuint texture; + GLenum type; + GLfloat texw; + GLfloat texh; + GLenum format; + GLenum formattype; + void *pixels; + int pitch; + SDL_Rect locked_rect; + + /* YUV texture support */ + SDL_bool yuv; + SDL_bool nv12; + GLuint utexture; + GLuint vtexture; + + GL_FBOList *fbo; +} GL_TextureData; + +SDL_FORCE_INLINE const char* +GL_TranslateError (GLenum error) +{ +#define GL_ERROR_TRANSLATE(e) case e: return #e; + switch (error) { + GL_ERROR_TRANSLATE(GL_INVALID_ENUM) + GL_ERROR_TRANSLATE(GL_INVALID_VALUE) + GL_ERROR_TRANSLATE(GL_INVALID_OPERATION) + GL_ERROR_TRANSLATE(GL_OUT_OF_MEMORY) + GL_ERROR_TRANSLATE(GL_NO_ERROR) + GL_ERROR_TRANSLATE(GL_STACK_OVERFLOW) + GL_ERROR_TRANSLATE(GL_STACK_UNDERFLOW) + GL_ERROR_TRANSLATE(GL_TABLE_TOO_LARGE) + default: + return "UNKNOWN"; +} +#undef GL_ERROR_TRANSLATE +} + +SDL_FORCE_INLINE void +GL_ClearErrors(SDL_Renderer *renderer) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + + if (!data->debug_enabled) + { + return; + } + if (data->GL_ARB_debug_output_supported) { + if (data->errors) { + int i; + for (i = 0; i < data->errors; ++i) { + SDL_free(data->error_messages[i]); + } + SDL_free(data->error_messages); + + data->errors = 0; + data->error_messages = NULL; + } + } else { + while (data->glGetError() != GL_NO_ERROR) { + continue; + } + } +} + +SDL_FORCE_INLINE int +GL_CheckAllErrors (const char *prefix, SDL_Renderer *renderer, const char *file, int line, const char *function) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + int ret = 0; + + if (!data->debug_enabled) + { + return 0; + } + if (data->GL_ARB_debug_output_supported) { + if (data->errors) { + int i; + for (i = 0; i < data->errors; ++i) { + SDL_SetError("%s: %s (%d): %s %s", prefix, file, line, function, data->error_messages[i]); + ret = -1; + } + GL_ClearErrors(renderer); + } + } else { + /* check gl errors (can return multiple errors) */ + for (;;) { + GLenum error = data->glGetError(); + if (error != GL_NO_ERROR) { + if (prefix == NULL || prefix[0] == '\0') { + prefix = "generic"; + } + SDL_SetError("%s: %s (%d): %s %s (0x%X)", prefix, file, line, function, GL_TranslateError(error), error); + ret = -1; + } else { + break; + } + } + } + return ret; +} + +#if 0 +#define GL_CheckError(prefix, renderer) +#else +#define GL_CheckError(prefix, renderer) GL_CheckAllErrors(prefix, renderer, SDL_FILE, SDL_LINE, SDL_FUNCTION) +#endif + +static int +GL_LoadFunctions(GL_RenderData * data) +{ +#ifdef __SDL_NOGETPROCADDR__ +#define SDL_PROC(ret,func,params) data->func=func; +#else +#define SDL_PROC(ret,func,params) \ + do { \ + data->func = SDL_GL_GetProcAddress(#func); \ + if ( ! data->func ) { \ + return SDL_SetError("Couldn't load GL function %s: %s", #func, SDL_GetError()); \ + } \ + } while ( 0 ); +#endif /* __SDL_NOGETPROCADDR__ */ + +#include "SDL_glfuncs.h" +#undef SDL_PROC + return 0; +} + +static SDL_GLContext SDL_CurrentContext = NULL; + +static int +GL_ActivateRenderer(SDL_Renderer * renderer) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + + if (SDL_CurrentContext != data->context || + SDL_GL_GetCurrentContext() != data->context) { + if (SDL_GL_MakeCurrent(renderer->window, data->context) < 0) { + return -1; + } + SDL_CurrentContext = data->context; + + GL_UpdateViewport(renderer); + } + + GL_ClearErrors(renderer); + + return 0; +} + +/* This is called if we need to invalidate all of the SDL OpenGL state */ +static void +GL_ResetState(SDL_Renderer *renderer) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + + if (SDL_GL_GetCurrentContext() == data->context) { + GL_UpdateViewport(renderer); + } else { + GL_ActivateRenderer(renderer); + } + + data->current.shader = SHADER_NONE; + data->current.color = 0xffffffff; + data->current.blendMode = SDL_BLENDMODE_INVALID; + + data->glDisable(GL_DEPTH_TEST); + data->glDisable(GL_CULL_FACE); + /* This ended up causing video discrepancies between OpenGL and Direct3D */ + /* data->glEnable(GL_LINE_SMOOTH); */ + + data->glMatrixMode(GL_MODELVIEW); + data->glLoadIdentity(); + + GL_CheckError("", renderer); +} + +static void APIENTRY +GL_HandleDebugMessage(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const char *message, const void *userParam) +{ + SDL_Renderer *renderer = (SDL_Renderer *) userParam; + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + + if (type == GL_DEBUG_TYPE_ERROR_ARB) { + /* Record this error */ + int errors = data->errors + 1; + char **error_messages = SDL_realloc(data->error_messages, errors * sizeof(*data->error_messages)); + if (error_messages) { + data->errors = errors; + data->error_messages = error_messages; + data->error_messages[data->errors-1] = SDL_strdup(message); + } + } + + /* If there's another error callback, pass it along, otherwise log it */ + if (data->next_error_callback) { + data->next_error_callback(source, type, id, severity, length, message, data->next_error_userparam); + } else { + if (type == GL_DEBUG_TYPE_ERROR_ARB) { + SDL_LogError(SDL_LOG_CATEGORY_RENDER, "%s", message); + } else { + SDL_LogDebug(SDL_LOG_CATEGORY_RENDER, "%s", message); + } + } +} + +static GL_FBOList * +GL_GetFBO(GL_RenderData *data, Uint32 w, Uint32 h) +{ + GL_FBOList *result = data->framebuffers; + + while (result && ((result->w != w) || (result->h != h))) { + result = result->next; + } + + if (!result) { + result = SDL_malloc(sizeof(GL_FBOList)); + if (result) { + result->w = w; + result->h = h; + data->glGenFramebuffersEXT(1, &result->FBO); + result->next = data->framebuffers; + data->framebuffers = result; + } + } + return result; +} + +SDL_Renderer * +GL_CreateRenderer(SDL_Window * window, Uint32 flags) +{ + SDL_Renderer *renderer; + GL_RenderData *data; + GLint value; + Uint32 window_flags; + int profile_mask = 0, major = 0, minor = 0; + SDL_bool changed_window = SDL_FALSE; + + SDL_GL_GetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, &profile_mask); + SDL_GL_GetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, &major); + SDL_GL_GetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, &minor); + + window_flags = SDL_GetWindowFlags(window); + if (!(window_flags & SDL_WINDOW_OPENGL) || + profile_mask == SDL_GL_CONTEXT_PROFILE_ES || major != RENDERER_CONTEXT_MAJOR || minor != RENDERER_CONTEXT_MINOR) { + + changed_window = SDL_TRUE; + SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, 0); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, RENDERER_CONTEXT_MAJOR); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, RENDERER_CONTEXT_MINOR); + + if (SDL_RecreateWindow(window, window_flags | SDL_WINDOW_OPENGL) < 0) { + goto error; + } + } + + renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer)); + if (!renderer) { + SDL_OutOfMemory(); + goto error; + } + + data = (GL_RenderData *) SDL_calloc(1, sizeof(*data)); + if (!data) { + GL_DestroyRenderer(renderer); + SDL_OutOfMemory(); + goto error; + } + + renderer->WindowEvent = GL_WindowEvent; + renderer->GetOutputSize = GL_GetOutputSize; + renderer->SupportsBlendMode = GL_SupportsBlendMode; + renderer->CreateTexture = GL_CreateTexture; + renderer->UpdateTexture = GL_UpdateTexture; + renderer->UpdateTextureYUV = GL_UpdateTextureYUV; + renderer->LockTexture = GL_LockTexture; + renderer->UnlockTexture = GL_UnlockTexture; + renderer->SetRenderTarget = GL_SetRenderTarget; + renderer->UpdateViewport = GL_UpdateViewport; + renderer->UpdateClipRect = GL_UpdateClipRect; + renderer->RenderClear = GL_RenderClear; + renderer->RenderDrawPoints = GL_RenderDrawPoints; + renderer->RenderDrawLines = GL_RenderDrawLines; + renderer->RenderFillRects = GL_RenderFillRects; + renderer->RenderCopy = GL_RenderCopy; + renderer->RenderCopyEx = GL_RenderCopyEx; + renderer->RenderReadPixels = GL_RenderReadPixels; + renderer->RenderPresent = GL_RenderPresent; + renderer->DestroyTexture = GL_DestroyTexture; + renderer->DestroyRenderer = GL_DestroyRenderer; + renderer->GL_BindTexture = GL_BindTexture; + renderer->GL_UnbindTexture = GL_UnbindTexture; + renderer->info = GL_RenderDriver.info; + renderer->info.flags = SDL_RENDERER_ACCELERATED; + renderer->driverdata = data; + renderer->window = window; + + data->context = SDL_GL_CreateContext(window); + if (!data->context) { + GL_DestroyRenderer(renderer); + goto error; + } + if (SDL_GL_MakeCurrent(window, data->context) < 0) { + GL_DestroyRenderer(renderer); + goto error; + } + + if (GL_LoadFunctions(data) < 0) { + GL_DestroyRenderer(renderer); + goto error; + } + +#ifdef __MACOSX__ + /* Enable multi-threaded rendering */ + /* Disabled until Ryan finishes his VBO/PBO code... + CGLEnable(CGLGetCurrentContext(), kCGLCEMPEngine); + */ +#endif + + if (flags & SDL_RENDERER_PRESENTVSYNC) { + SDL_GL_SetSwapInterval(1); + } else { + SDL_GL_SetSwapInterval(0); + } + if (SDL_GL_GetSwapInterval() > 0) { + renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC; + } + + /* Check for debug output support */ + if (SDL_GL_GetAttribute(SDL_GL_CONTEXT_FLAGS, &value) == 0 && + (value & SDL_GL_CONTEXT_DEBUG_FLAG)) { + data->debug_enabled = SDL_TRUE; + } + if (data->debug_enabled && SDL_GL_ExtensionSupported("GL_ARB_debug_output")) { + PFNGLDEBUGMESSAGECALLBACKARBPROC glDebugMessageCallbackARBFunc = (PFNGLDEBUGMESSAGECALLBACKARBPROC) SDL_GL_GetProcAddress("glDebugMessageCallbackARB"); + + data->GL_ARB_debug_output_supported = SDL_TRUE; + data->glGetPointerv(GL_DEBUG_CALLBACK_FUNCTION_ARB, (GLvoid **)(char *)&data->next_error_callback); + data->glGetPointerv(GL_DEBUG_CALLBACK_USER_PARAM_ARB, &data->next_error_userparam); + glDebugMessageCallbackARBFunc(GL_HandleDebugMessage, renderer); + + /* Make sure our callback is called when errors actually happen */ + data->glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB); + } + + if (SDL_GL_ExtensionSupported("GL_ARB_texture_non_power_of_two")) { + data->GL_ARB_texture_non_power_of_two_supported = SDL_TRUE; + } else if (SDL_GL_ExtensionSupported("GL_ARB_texture_rectangle") || + SDL_GL_ExtensionSupported("GL_EXT_texture_rectangle")) { + data->GL_ARB_texture_rectangle_supported = SDL_TRUE; + } + if (data->GL_ARB_texture_rectangle_supported) { + data->glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB, &value); + renderer->info.max_texture_width = value; + renderer->info.max_texture_height = value; + } else { + data->glGetIntegerv(GL_MAX_TEXTURE_SIZE, &value); + renderer->info.max_texture_width = value; + renderer->info.max_texture_height = value; + } + + /* Check for multitexture support */ + if (SDL_GL_ExtensionSupported("GL_ARB_multitexture")) { + data->glActiveTextureARB = (PFNGLACTIVETEXTUREARBPROC) SDL_GL_GetProcAddress("glActiveTextureARB"); + if (data->glActiveTextureARB) { + data->GL_ARB_multitexture_supported = SDL_TRUE; + data->glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &data->num_texture_units); + } + } + + /* Check for shader support */ + if (SDL_GetHintBoolean(SDL_HINT_RENDER_OPENGL_SHADERS, SDL_TRUE)) { + data->shaders = GL_CreateShaderContext(); + } + SDL_LogInfo(SDL_LOG_CATEGORY_RENDER, "OpenGL shaders: %s", + data->shaders ? "ENABLED" : "DISABLED"); + + /* We support YV12 textures using 3 textures and a shader */ + if (data->shaders && data->num_texture_units >= 3) { + renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_YV12; + renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_IYUV; + renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_NV12; + renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_NV21; + } + +#ifdef __MACOSX__ + renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_UYVY; +#endif + + if (SDL_GL_ExtensionSupported("GL_EXT_framebuffer_object")) { + data->GL_EXT_framebuffer_object_supported = SDL_TRUE; + data->glGenFramebuffersEXT = (PFNGLGENFRAMEBUFFERSEXTPROC) + SDL_GL_GetProcAddress("glGenFramebuffersEXT"); + data->glDeleteFramebuffersEXT = (PFNGLDELETEFRAMEBUFFERSEXTPROC) + SDL_GL_GetProcAddress("glDeleteFramebuffersEXT"); + data->glFramebufferTexture2DEXT = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC) + SDL_GL_GetProcAddress("glFramebufferTexture2DEXT"); + data->glBindFramebufferEXT = (PFNGLBINDFRAMEBUFFEREXTPROC) + SDL_GL_GetProcAddress("glBindFramebufferEXT"); + data->glCheckFramebufferStatusEXT = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC) + SDL_GL_GetProcAddress("glCheckFramebufferStatusEXT"); + renderer->info.flags |= SDL_RENDERER_TARGETTEXTURE; + } + data->framebuffers = NULL; + + /* Set up parameters for rendering */ + GL_ResetState(renderer); + + return renderer; + +error: + if (changed_window) { + /* Uh oh, better try to put it back... */ + SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, profile_mask); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, major); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, minor); + SDL_RecreateWindow(window, window_flags); + } + return NULL; +} + +static void +GL_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event) +{ + if (event->event == SDL_WINDOWEVENT_SIZE_CHANGED || + event->event == SDL_WINDOWEVENT_SHOWN || + event->event == SDL_WINDOWEVENT_HIDDEN) { + /* Rebind the context to the window area and update matrices */ + SDL_CurrentContext = NULL; + } +} + +static int +GL_GetOutputSize(SDL_Renderer * renderer, int *w, int *h) +{ + SDL_GL_GetDrawableSize(renderer->window, w, h); + return 0; +} + +static GLenum GetBlendFunc(SDL_BlendFactor factor) +{ + switch (factor) { + case SDL_BLENDFACTOR_ZERO: + return GL_ZERO; + case SDL_BLENDFACTOR_ONE: + return GL_ONE; + case SDL_BLENDFACTOR_SRC_COLOR: + return GL_SRC_COLOR; + case SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR: + return GL_ONE_MINUS_SRC_COLOR; + case SDL_BLENDFACTOR_SRC_ALPHA: + return GL_SRC_ALPHA; + case SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA: + return GL_ONE_MINUS_SRC_ALPHA; + case SDL_BLENDFACTOR_DST_COLOR: + return GL_DST_COLOR; + case SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR: + return GL_ONE_MINUS_DST_COLOR; + case SDL_BLENDFACTOR_DST_ALPHA: + return GL_DST_ALPHA; + case SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA: + return GL_ONE_MINUS_DST_ALPHA; + default: + return GL_INVALID_ENUM; + } +} + +static GLenum GetBlendEquation(SDL_BlendOperation operation) +{ + switch (operation) { + case SDL_BLENDOPERATION_ADD: + return GL_FUNC_ADD; + case SDL_BLENDOPERATION_SUBTRACT: + return GL_FUNC_SUBTRACT; + case SDL_BLENDOPERATION_REV_SUBTRACT: + return GL_FUNC_REVERSE_SUBTRACT; + default: + return GL_INVALID_ENUM; + } +} + +static SDL_bool +GL_SupportsBlendMode(SDL_Renderer * renderer, SDL_BlendMode blendMode) +{ + SDL_BlendFactor srcColorFactor = SDL_GetBlendModeSrcColorFactor(blendMode); + SDL_BlendFactor srcAlphaFactor = SDL_GetBlendModeSrcAlphaFactor(blendMode); + SDL_BlendOperation colorOperation = SDL_GetBlendModeColorOperation(blendMode); + SDL_BlendFactor dstColorFactor = SDL_GetBlendModeDstColorFactor(blendMode); + SDL_BlendFactor dstAlphaFactor = SDL_GetBlendModeDstAlphaFactor(blendMode); + SDL_BlendOperation alphaOperation = SDL_GetBlendModeAlphaOperation(blendMode); + + if (GetBlendFunc(srcColorFactor) == GL_INVALID_ENUM || + GetBlendFunc(srcAlphaFactor) == GL_INVALID_ENUM || + GetBlendEquation(colorOperation) == GL_INVALID_ENUM || + GetBlendFunc(dstColorFactor) == GL_INVALID_ENUM || + GetBlendFunc(dstAlphaFactor) == GL_INVALID_ENUM || + GetBlendEquation(alphaOperation) == GL_INVALID_ENUM) { + return SDL_FALSE; + } + if (colorOperation != alphaOperation) { + return SDL_FALSE; + } + return SDL_TRUE; +} + +SDL_FORCE_INLINE int +power_of_2(int input) +{ + int value = 1; + + while (value < input) { + value <<= 1; + } + return value; +} + +SDL_FORCE_INLINE SDL_bool +convert_format(GL_RenderData *renderdata, Uint32 pixel_format, + GLint* internalFormat, GLenum* format, GLenum* type) +{ + switch (pixel_format) { + case SDL_PIXELFORMAT_ARGB8888: + *internalFormat = GL_RGBA8; + *format = GL_BGRA; + *type = GL_UNSIGNED_INT_8_8_8_8_REV; + break; + case SDL_PIXELFORMAT_YV12: + case SDL_PIXELFORMAT_IYUV: + case SDL_PIXELFORMAT_NV12: + case SDL_PIXELFORMAT_NV21: + *internalFormat = GL_LUMINANCE; + *format = GL_LUMINANCE; + *type = GL_UNSIGNED_BYTE; + break; +#ifdef __MACOSX__ + case SDL_PIXELFORMAT_UYVY: + *internalFormat = GL_RGB8; + *format = GL_YCBCR_422_APPLE; + *type = GL_UNSIGNED_SHORT_8_8_APPLE; + break; +#endif + default: + return SDL_FALSE; + } + return SDL_TRUE; +} + +static int +GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture) +{ + GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata; + GL_TextureData *data; + GLint internalFormat; + GLenum format, type; + int texture_w, texture_h; + GLenum scaleMode; + + GL_ActivateRenderer(renderer); + + if (texture->access == SDL_TEXTUREACCESS_TARGET && + !renderdata->GL_EXT_framebuffer_object_supported) { + return SDL_SetError("Render targets not supported by OpenGL"); + } + + if (!convert_format(renderdata, texture->format, &internalFormat, + &format, &type)) { + return SDL_SetError("Texture format %s not supported by OpenGL", + SDL_GetPixelFormatName(texture->format)); + } + + data = (GL_TextureData *) SDL_calloc(1, sizeof(*data)); + if (!data) { + return SDL_OutOfMemory(); + } + + if (texture->access == SDL_TEXTUREACCESS_STREAMING) { + size_t size; + data->pitch = texture->w * SDL_BYTESPERPIXEL(texture->format); + size = texture->h * data->pitch; + if (texture->format == SDL_PIXELFORMAT_YV12 || + texture->format == SDL_PIXELFORMAT_IYUV) { + /* Need to add size for the U and V planes */ + size += 2 * ((texture->h + 1) / 2) * ((data->pitch + 1) / 2); + } + if (texture->format == SDL_PIXELFORMAT_NV12 || + texture->format == SDL_PIXELFORMAT_NV21) { + /* Need to add size for the U/V plane */ + size += 2 * ((texture->h + 1) / 2) * ((data->pitch + 1) / 2); + } + data->pixels = SDL_calloc(1, size); + if (!data->pixels) { + SDL_free(data); + return SDL_OutOfMemory(); + } + } + + if (texture->access == SDL_TEXTUREACCESS_TARGET) { + data->fbo = GL_GetFBO(renderdata, texture->w, texture->h); + } else { + data->fbo = NULL; + } + + GL_CheckError("", renderer); + renderdata->glGenTextures(1, &data->texture); + if (GL_CheckError("glGenTextures()", renderer) < 0) { + if (data->pixels) { + SDL_free(data->pixels); + } + SDL_free(data); + return -1; + } + texture->driverdata = data; + + if (renderdata->GL_ARB_texture_non_power_of_two_supported) { + data->type = GL_TEXTURE_2D; + texture_w = texture->w; + texture_h = texture->h; + data->texw = 1.0f; + data->texh = 1.0f; + } else if (renderdata->GL_ARB_texture_rectangle_supported) { + data->type = GL_TEXTURE_RECTANGLE_ARB; + texture_w = texture->w; + texture_h = texture->h; + data->texw = (GLfloat) texture_w; + data->texh = (GLfloat) texture_h; + } else { + data->type = GL_TEXTURE_2D; + texture_w = power_of_2(texture->w); + texture_h = power_of_2(texture->h); + data->texw = (GLfloat) (texture->w) / texture_w; + data->texh = (GLfloat) texture->h / texture_h; + } + + data->format = format; + data->formattype = type; + scaleMode = (texture->scaleMode == SDL_ScaleModeNearest) ? GL_NEAREST : GL_LINEAR; + renderdata->glEnable(data->type); + renderdata->glBindTexture(data->type, data->texture); + renderdata->glTexParameteri(data->type, GL_TEXTURE_MIN_FILTER, scaleMode); + renderdata->glTexParameteri(data->type, GL_TEXTURE_MAG_FILTER, scaleMode); + /* According to the spec, CLAMP_TO_EDGE is the default for TEXTURE_RECTANGLE + and setting it causes an INVALID_ENUM error in the latest NVidia drivers. + */ + if (data->type != GL_TEXTURE_RECTANGLE_ARB) { + renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_S, + GL_CLAMP_TO_EDGE); + renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_T, + GL_CLAMP_TO_EDGE); + } +#ifdef __MACOSX__ +#ifndef GL_TEXTURE_STORAGE_HINT_APPLE +#define GL_TEXTURE_STORAGE_HINT_APPLE 0x85BC +#endif +#ifndef STORAGE_CACHED_APPLE +#define STORAGE_CACHED_APPLE 0x85BE +#endif +#ifndef STORAGE_SHARED_APPLE +#define STORAGE_SHARED_APPLE 0x85BF +#endif + if (texture->access == SDL_TEXTUREACCESS_STREAMING) { + renderdata->glTexParameteri(data->type, GL_TEXTURE_STORAGE_HINT_APPLE, + GL_STORAGE_SHARED_APPLE); + } else { + renderdata->glTexParameteri(data->type, GL_TEXTURE_STORAGE_HINT_APPLE, + GL_STORAGE_CACHED_APPLE); + } + if (texture->access == SDL_TEXTUREACCESS_STREAMING + && texture->format == SDL_PIXELFORMAT_ARGB8888 + && (texture->w % 8) == 0) { + renderdata->glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE); + renderdata->glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, + (data->pitch / SDL_BYTESPERPIXEL(texture->format))); + renderdata->glTexImage2D(data->type, 0, internalFormat, texture_w, + texture_h, 0, format, type, data->pixels); + renderdata->glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_FALSE); + } + else +#endif + { + renderdata->glTexImage2D(data->type, 0, internalFormat, texture_w, + texture_h, 0, format, type, NULL); + } + renderdata->glDisable(data->type); + if (GL_CheckError("glTexImage2D()", renderer) < 0) { + return -1; + } + + if (texture->format == SDL_PIXELFORMAT_YV12 || + texture->format == SDL_PIXELFORMAT_IYUV) { + data->yuv = SDL_TRUE; + + renderdata->glGenTextures(1, &data->utexture); + renderdata->glGenTextures(1, &data->vtexture); + renderdata->glEnable(data->type); + + renderdata->glBindTexture(data->type, data->utexture); + renderdata->glTexParameteri(data->type, GL_TEXTURE_MIN_FILTER, + scaleMode); + renderdata->glTexParameteri(data->type, GL_TEXTURE_MAG_FILTER, + scaleMode); + renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_S, + GL_CLAMP_TO_EDGE); + renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_T, + GL_CLAMP_TO_EDGE); + renderdata->glTexImage2D(data->type, 0, internalFormat, (texture_w+1)/2, + (texture_h+1)/2, 0, format, type, NULL); + + renderdata->glBindTexture(data->type, data->vtexture); + renderdata->glTexParameteri(data->type, GL_TEXTURE_MIN_FILTER, + scaleMode); + renderdata->glTexParameteri(data->type, GL_TEXTURE_MAG_FILTER, + scaleMode); + renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_S, + GL_CLAMP_TO_EDGE); + renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_T, + GL_CLAMP_TO_EDGE); + renderdata->glTexImage2D(data->type, 0, internalFormat, (texture_w+1)/2, + (texture_h+1)/2, 0, format, type, NULL); + + renderdata->glDisable(data->type); + } + + if (texture->format == SDL_PIXELFORMAT_NV12 || + texture->format == SDL_PIXELFORMAT_NV21) { + data->nv12 = SDL_TRUE; + + renderdata->glGenTextures(1, &data->utexture); + renderdata->glEnable(data->type); + + renderdata->glBindTexture(data->type, data->utexture); + renderdata->glTexParameteri(data->type, GL_TEXTURE_MIN_FILTER, + scaleMode); + renderdata->glTexParameteri(data->type, GL_TEXTURE_MAG_FILTER, + scaleMode); + renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_S, + GL_CLAMP_TO_EDGE); + renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_T, + GL_CLAMP_TO_EDGE); + renderdata->glTexImage2D(data->type, 0, GL_LUMINANCE_ALPHA, (texture_w+1)/2, + (texture_h+1)/2, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, NULL); + renderdata->glDisable(data->type); + } + + return GL_CheckError("", renderer); +} + +static int +GL_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * rect, const void *pixels, int pitch) +{ + GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata; + GL_TextureData *data = (GL_TextureData *) texture->driverdata; + const int texturebpp = SDL_BYTESPERPIXEL(texture->format); + + SDL_assert(texturebpp != 0); /* otherwise, division by zero later. */ + + GL_ActivateRenderer(renderer); + + renderdata->glEnable(data->type); + renderdata->glBindTexture(data->type, data->texture); + renderdata->glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, (pitch / texturebpp)); + renderdata->glTexSubImage2D(data->type, 0, rect->x, rect->y, rect->w, + rect->h, data->format, data->formattype, + pixels); + if (data->yuv) { + renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, ((pitch + 1) / 2)); + + /* Skip to the correct offset into the next texture */ + pixels = (const void*)((const Uint8*)pixels + rect->h * pitch); + if (texture->format == SDL_PIXELFORMAT_YV12) { + renderdata->glBindTexture(data->type, data->vtexture); + } else { + renderdata->glBindTexture(data->type, data->utexture); + } + renderdata->glTexSubImage2D(data->type, 0, rect->x/2, rect->y/2, + (rect->w+1)/2, (rect->h+1)/2, + data->format, data->formattype, pixels); + + /* Skip to the correct offset into the next texture */ + pixels = (const void*)((const Uint8*)pixels + ((rect->h + 1) / 2) * ((pitch + 1) / 2)); + if (texture->format == SDL_PIXELFORMAT_YV12) { + renderdata->glBindTexture(data->type, data->utexture); + } else { + renderdata->glBindTexture(data->type, data->vtexture); + } + renderdata->glTexSubImage2D(data->type, 0, rect->x/2, rect->y/2, + (rect->w+1)/2, (rect->h+1)/2, + data->format, data->formattype, pixels); + } + + if (data->nv12) { + renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, ((pitch + 1) / 2)); + + /* Skip to the correct offset into the next texture */ + pixels = (const void*)((const Uint8*)pixels + rect->h * pitch); + renderdata->glBindTexture(data->type, data->utexture); + renderdata->glTexSubImage2D(data->type, 0, rect->x/2, rect->y/2, + (rect->w + 1)/2, (rect->h + 1)/2, + GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, pixels); + } + renderdata->glDisable(data->type); + + return GL_CheckError("glTexSubImage2D()", renderer); +} + +static int +GL_UpdateTextureYUV(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * rect, + const Uint8 *Yplane, int Ypitch, + const Uint8 *Uplane, int Upitch, + const Uint8 *Vplane, int Vpitch) +{ + GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata; + GL_TextureData *data = (GL_TextureData *) texture->driverdata; + + GL_ActivateRenderer(renderer); + + renderdata->glEnable(data->type); + renderdata->glBindTexture(data->type, data->texture); + renderdata->glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, Ypitch); + renderdata->glTexSubImage2D(data->type, 0, rect->x, rect->y, rect->w, + rect->h, data->format, data->formattype, + Yplane); + + renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, Upitch); + renderdata->glBindTexture(data->type, data->utexture); + renderdata->glTexSubImage2D(data->type, 0, rect->x/2, rect->y/2, + (rect->w + 1)/2, (rect->h + 1)/2, + data->format, data->formattype, Uplane); + + renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, Vpitch); + renderdata->glBindTexture(data->type, data->vtexture); + renderdata->glTexSubImage2D(data->type, 0, rect->x/2, rect->y/2, + (rect->w + 1)/2, (rect->h + 1)/2, + data->format, data->formattype, Vplane); + renderdata->glDisable(data->type); + + return GL_CheckError("glTexSubImage2D()", renderer); +} + +static int +GL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * rect, void **pixels, int *pitch) +{ + GL_TextureData *data = (GL_TextureData *) texture->driverdata; + + data->locked_rect = *rect; + *pixels = + (void *) ((Uint8 *) data->pixels + rect->y * data->pitch + + rect->x * SDL_BYTESPERPIXEL(texture->format)); + *pitch = data->pitch; + return 0; +} + +static void +GL_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture) +{ + GL_TextureData *data = (GL_TextureData *) texture->driverdata; + const SDL_Rect *rect; + void *pixels; + + rect = &data->locked_rect; + pixels = + (void *) ((Uint8 *) data->pixels + rect->y * data->pitch + + rect->x * SDL_BYTESPERPIXEL(texture->format)); + GL_UpdateTexture(renderer, texture, rect, pixels, data->pitch); +} + +static int +GL_SetRenderTarget(SDL_Renderer * renderer, SDL_Texture * texture) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + GL_TextureData *texturedata; + GLenum status; + + GL_ActivateRenderer(renderer); + + if (!data->GL_EXT_framebuffer_object_supported) { + return SDL_SetError("Render targets not supported by OpenGL"); + } + + if (texture == NULL) { + data->glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); + return 0; + } + + texturedata = (GL_TextureData *) texture->driverdata; + data->glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, texturedata->fbo->FBO); + /* TODO: check if texture pixel format allows this operation */ + data->glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, texturedata->type, texturedata->texture, 0); + /* Check FBO status */ + status = data->glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); + if (status != GL_FRAMEBUFFER_COMPLETE_EXT) { + return SDL_SetError("glFramebufferTexture2DEXT() failed"); + } + return 0; +} + +static int +GL_UpdateViewport(SDL_Renderer * renderer) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + + if (SDL_CurrentContext != data->context) { + /* We'll update the viewport after we rebind the context */ + return 0; + } + + if (renderer->target) { + data->glViewport(renderer->viewport.x, renderer->viewport.y, + renderer->viewport.w, renderer->viewport.h); + } else { + int w, h; + + SDL_GL_GetDrawableSize(renderer->window, &w, &h); + data->glViewport(renderer->viewport.x, (h - renderer->viewport.y - renderer->viewport.h), + renderer->viewport.w, renderer->viewport.h); + } + + data->glMatrixMode(GL_PROJECTION); + data->glLoadIdentity(); + if (renderer->viewport.w && renderer->viewport.h) { + if (renderer->target) { + data->glOrtho((GLdouble) 0, + (GLdouble) renderer->viewport.w, + (GLdouble) 0, + (GLdouble) renderer->viewport.h, + 0.0, 1.0); + } else { + data->glOrtho((GLdouble) 0, + (GLdouble) renderer->viewport.w, + (GLdouble) renderer->viewport.h, + (GLdouble) 0, + 0.0, 1.0); + } + } + data->glMatrixMode(GL_MODELVIEW); + + return GL_CheckError("", renderer); +} + +static int +GL_UpdateClipRect(SDL_Renderer * renderer) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + + if (renderer->clipping_enabled) { + const SDL_Rect *rect = &renderer->clip_rect; + data->glEnable(GL_SCISSOR_TEST); + if (renderer->target) { + data->glScissor(renderer->viewport.x + rect->x, renderer->viewport.y + rect->y, rect->w, rect->h); + } else { + int w, h; + + SDL_GL_GetDrawableSize(renderer->window, &w, &h); + data->glScissor(renderer->viewport.x + rect->x, h - renderer->viewport.y - rect->y - rect->h, rect->w, rect->h); + } + } else { + data->glDisable(GL_SCISSOR_TEST); + } + return 0; +} + +static void +GL_SetShader(GL_RenderData * data, GL_Shader shader) +{ + if (data->shaders && shader != data->current.shader) { + GL_SelectShader(data->shaders, shader); + data->current.shader = shader; + } +} + +static void +GL_SetColor(GL_RenderData * data, Uint8 r, Uint8 g, Uint8 b, Uint8 a) +{ + Uint32 color = ((a << 24) | (r << 16) | (g << 8) | b); + + if (color != data->current.color) { + data->glColor4f((GLfloat) r * inv255f, + (GLfloat) g * inv255f, + (GLfloat) b * inv255f, + (GLfloat) a * inv255f); + data->current.color = color; + } +} + +static void +GL_SetBlendMode(GL_RenderData * data, SDL_BlendMode blendMode) +{ + if (blendMode != data->current.blendMode) { + if (blendMode == SDL_BLENDMODE_NONE) { + data->glDisable(GL_BLEND); + } else { + data->glEnable(GL_BLEND); + data->glBlendFuncSeparate(GetBlendFunc(SDL_GetBlendModeSrcColorFactor(blendMode)), + GetBlendFunc(SDL_GetBlendModeDstColorFactor(blendMode)), + GetBlendFunc(SDL_GetBlendModeSrcAlphaFactor(blendMode)), + GetBlendFunc(SDL_GetBlendModeDstAlphaFactor(blendMode))); + data->glBlendEquation(GetBlendEquation(SDL_GetBlendModeColorOperation(blendMode))); + } + data->current.blendMode = blendMode; + } +} + +static void +GL_SetDrawingState(SDL_Renderer * renderer) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + + GL_ActivateRenderer(renderer); + + GL_SetColor(data, renderer->r, + renderer->g, + renderer->b, + renderer->a); + + GL_SetBlendMode(data, renderer->blendMode); + + GL_SetShader(data, SHADER_SOLID); +} + +static int +GL_RenderClear(SDL_Renderer * renderer) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + + GL_ActivateRenderer(renderer); + + data->glClearColor((GLfloat) renderer->r * inv255f, + (GLfloat) renderer->g * inv255f, + (GLfloat) renderer->b * inv255f, + (GLfloat) renderer->a * inv255f); + + if (renderer->clipping_enabled) { + data->glDisable(GL_SCISSOR_TEST); + } + + data->glClear(GL_COLOR_BUFFER_BIT); + + if (renderer->clipping_enabled) { + data->glEnable(GL_SCISSOR_TEST); + } + + return 0; +} + +static int +GL_RenderDrawPoints(SDL_Renderer * renderer, const SDL_FPoint * points, + int count) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + int i; + + GL_SetDrawingState(renderer); + + data->glBegin(GL_POINTS); + for (i = 0; i < count; ++i) { + data->glVertex2f(0.5f + points[i].x, 0.5f + points[i].y); + } + data->glEnd(); + + return 0; +} + +static int +GL_RenderDrawLines(SDL_Renderer * renderer, const SDL_FPoint * points, + int count) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + int i; + + GL_SetDrawingState(renderer); + + if (count > 2 && + points[0].x == points[count-1].x && points[0].y == points[count-1].y) { + data->glBegin(GL_LINE_LOOP); + /* GL_LINE_LOOP takes care of the final segment */ + --count; + for (i = 0; i < count; ++i) { + data->glVertex2f(0.5f + points[i].x, 0.5f + points[i].y); + } + data->glEnd(); + } else { +#if defined(__MACOSX__) || defined(__WIN32__) +#else + int x1, y1, x2, y2; +#endif + + data->glBegin(GL_LINE_STRIP); + for (i = 0; i < count; ++i) { + data->glVertex2f(0.5f + points[i].x, 0.5f + points[i].y); + } + data->glEnd(); + + /* The line is half open, so we need one more point to complete it. + * http://www.opengl.org/documentation/specs/version1.1/glspec1.1/node47.html + * If we have to, we can use vertical line and horizontal line textures + * for vertical and horizontal lines, and then create custom textures + * for diagonal lines and software render those. It's terrible, but at + * least it would be pixel perfect. + */ + data->glBegin(GL_POINTS); +#if defined(__MACOSX__) || defined(__WIN32__) + /* Mac OS X and Windows seem to always leave the last point open */ + data->glVertex2f(0.5f + points[count-1].x, 0.5f + points[count-1].y); +#else + /* Linux seems to leave the right-most or bottom-most point open */ + x1 = points[0].x; + y1 = points[0].y; + x2 = points[count-1].x; + y2 = points[count-1].y; + + if (x1 > x2) { + data->glVertex2f(0.5f + x1, 0.5f + y1); + } else if (x2 > x1) { + data->glVertex2f(0.5f + x2, 0.5f + y2); + } + if (y1 > y2) { + data->glVertex2f(0.5f + x1, 0.5f + y1); + } else if (y2 > y1) { + data->glVertex2f(0.5f + x2, 0.5f + y2); + } +#endif + data->glEnd(); + } + return GL_CheckError("", renderer); +} + +static int +GL_RenderFillRects(SDL_Renderer * renderer, const SDL_FRect * rects, int count) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + int i; + + GL_SetDrawingState(renderer); + + for (i = 0; i < count; ++i) { + const SDL_FRect *rect = &rects[i]; + + data->glRectf(rect->x, rect->y, rect->x + rect->w, rect->y + rect->h); + } + return GL_CheckError("", renderer); +} + +static int +GL_SetupCopy(SDL_Renderer * renderer, SDL_Texture * texture) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata; + + data->glEnable(texturedata->type); + if (texturedata->yuv) { + data->glActiveTextureARB(GL_TEXTURE2_ARB); + data->glBindTexture(texturedata->type, texturedata->vtexture); + + data->glActiveTextureARB(GL_TEXTURE1_ARB); + data->glBindTexture(texturedata->type, texturedata->utexture); + + data->glActiveTextureARB(GL_TEXTURE0_ARB); + } + if (texturedata->nv12) { + data->glActiveTextureARB(GL_TEXTURE1_ARB); + data->glBindTexture(texturedata->type, texturedata->utexture); + + data->glActiveTextureARB(GL_TEXTURE0_ARB); + } + data->glBindTexture(texturedata->type, texturedata->texture); + + if (texture->modMode) { + GL_SetColor(data, texture->r, texture->g, texture->b, texture->a); + } else { + GL_SetColor(data, 255, 255, 255, 255); + } + + GL_SetBlendMode(data, texture->blendMode); + + if (texturedata->yuv || texturedata->nv12) { + switch (SDL_GetYUVConversionModeForResolution(texture->w, texture->h)) { + case SDL_YUV_CONVERSION_JPEG: + if (texturedata->yuv) { + GL_SetShader(data, SHADER_YUV_JPEG); + } else if (texture->format == SDL_PIXELFORMAT_NV12) { + GL_SetShader(data, SHADER_NV12_JPEG); + } else { + GL_SetShader(data, SHADER_NV21_JPEG); + } + break; + case SDL_YUV_CONVERSION_BT601: + if (texturedata->yuv) { + GL_SetShader(data, SHADER_YUV_BT601); + } else if (texture->format == SDL_PIXELFORMAT_NV12) { + GL_SetShader(data, SHADER_NV12_BT601); + } else { + GL_SetShader(data, SHADER_NV21_BT601); + } + break; + case SDL_YUV_CONVERSION_BT709: + if (texturedata->yuv) { + GL_SetShader(data, SHADER_YUV_BT709); + } else if (texture->format == SDL_PIXELFORMAT_NV12) { + GL_SetShader(data, SHADER_NV12_BT709); + } else { + GL_SetShader(data, SHADER_NV21_BT709); + } + break; + default: + return SDL_SetError("Unsupported YUV conversion mode"); + } + } else { + GL_SetShader(data, SHADER_RGB); + } + return 0; +} + +static int +GL_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * srcrect, const SDL_FRect * dstrect) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata; + GLfloat minx, miny, maxx, maxy; + GLfloat minu, maxu, minv, maxv; + + GL_ActivateRenderer(renderer); + + if (GL_SetupCopy(renderer, texture) < 0) { + return -1; + } + + minx = dstrect->x; + miny = dstrect->y; + maxx = dstrect->x + dstrect->w; + maxy = dstrect->y + dstrect->h; + + minu = (GLfloat) srcrect->x / texture->w; + minu *= texturedata->texw; + maxu = (GLfloat) (srcrect->x + srcrect->w) / texture->w; + maxu *= texturedata->texw; + minv = (GLfloat) srcrect->y / texture->h; + minv *= texturedata->texh; + maxv = (GLfloat) (srcrect->y + srcrect->h) / texture->h; + maxv *= texturedata->texh; + + data->glBegin(GL_TRIANGLE_STRIP); + data->glTexCoord2f(minu, minv); + data->glVertex2f(minx, miny); + data->glTexCoord2f(maxu, minv); + data->glVertex2f(maxx, miny); + data->glTexCoord2f(minu, maxv); + data->glVertex2f(minx, maxy); + data->glTexCoord2f(maxu, maxv); + data->glVertex2f(maxx, maxy); + data->glEnd(); + + data->glDisable(texturedata->type); + + return GL_CheckError("", renderer); +} + +static int +GL_RenderCopyEx(SDL_Renderer * renderer, SDL_Texture * texture, + const SDL_Rect * srcrect, const SDL_FRect * dstrect, + const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata; + GLfloat minx, miny, maxx, maxy; + GLfloat centerx, centery; + GLfloat minu, maxu, minv, maxv; + + GL_ActivateRenderer(renderer); + + if (GL_SetupCopy(renderer, texture) < 0) { + return -1; + } + + centerx = center->x; + centery = center->y; + + if (flip & SDL_FLIP_HORIZONTAL) { + minx = dstrect->w - centerx; + maxx = -centerx; + } + else { + minx = -centerx; + maxx = dstrect->w - centerx; + } + + if (flip & SDL_FLIP_VERTICAL) { + miny = dstrect->h - centery; + maxy = -centery; + } + else { + miny = -centery; + maxy = dstrect->h - centery; + } + + minu = (GLfloat) srcrect->x / texture->w; + minu *= texturedata->texw; + maxu = (GLfloat) (srcrect->x + srcrect->w) / texture->w; + maxu *= texturedata->texw; + minv = (GLfloat) srcrect->y / texture->h; + minv *= texturedata->texh; + maxv = (GLfloat) (srcrect->y + srcrect->h) / texture->h; + maxv *= texturedata->texh; + + /* Translate to flip, rotate, translate to position */ + data->glPushMatrix(); + data->glTranslatef((GLfloat)dstrect->x + centerx, (GLfloat)dstrect->y + centery, (GLfloat)0.0); + data->glRotated(angle, (GLdouble)0.0, (GLdouble)0.0, (GLdouble)1.0); + + data->glBegin(GL_TRIANGLE_STRIP); + data->glTexCoord2f(minu, minv); + data->glVertex2f(minx, miny); + data->glTexCoord2f(maxu, minv); + data->glVertex2f(maxx, miny); + data->glTexCoord2f(minu, maxv); + data->glVertex2f(minx, maxy); + data->glTexCoord2f(maxu, maxv); + data->glVertex2f(maxx, maxy); + data->glEnd(); + data->glPopMatrix(); + + data->glDisable(texturedata->type); + + return GL_CheckError("", renderer); +} + +static int +GL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect, + Uint32 pixel_format, void * pixels, int pitch) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + Uint32 temp_format = renderer->target ? renderer->target->format : SDL_PIXELFORMAT_ARGB8888; + void *temp_pixels; + int temp_pitch; + GLint internalFormat; + GLenum format, type; + Uint8 *src, *dst, *tmp; + int w, h, length, rows; + int status; + + GL_ActivateRenderer(renderer); + + if (!convert_format(data, temp_format, &internalFormat, &format, &type)) { + return SDL_SetError("Texture format %s not supported by OpenGL", + SDL_GetPixelFormatName(temp_format)); + } + + if (!rect->w || !rect->h) { + return 0; /* nothing to do. */ + } + + temp_pitch = rect->w * SDL_BYTESPERPIXEL(temp_format); + temp_pixels = SDL_malloc(rect->h * temp_pitch); + if (!temp_pixels) { + return SDL_OutOfMemory(); + } + + SDL_GetRendererOutputSize(renderer, &w, &h); + + data->glPixelStorei(GL_PACK_ALIGNMENT, 1); + data->glPixelStorei(GL_PACK_ROW_LENGTH, + (temp_pitch / SDL_BYTESPERPIXEL(temp_format))); + + data->glReadPixels(rect->x, renderer->target ? rect->y : (h-rect->y)-rect->h, + rect->w, rect->h, format, type, temp_pixels); + + if (GL_CheckError("glReadPixels()", renderer) < 0) { + SDL_free(temp_pixels); + return -1; + } + + /* Flip the rows to be top-down if necessary */ + if (!renderer->target) { + length = rect->w * SDL_BYTESPERPIXEL(temp_format); + src = (Uint8*)temp_pixels + (rect->h-1)*temp_pitch; + dst = (Uint8*)temp_pixels; + tmp = SDL_stack_alloc(Uint8, length); + rows = rect->h / 2; + while (rows--) { + SDL_memcpy(tmp, dst, length); + SDL_memcpy(dst, src, length); + SDL_memcpy(src, tmp, length); + dst += temp_pitch; + src -= temp_pitch; + } + SDL_stack_free(tmp); + } + + status = SDL_ConvertPixels(rect->w, rect->h, + temp_format, temp_pixels, temp_pitch, + pixel_format, pixels, pitch); + SDL_free(temp_pixels); + + return status; +} + +static void +GL_RenderPresent(SDL_Renderer * renderer) +{ + GL_ActivateRenderer(renderer); + + SDL_GL_SwapWindow(renderer->window); +} + +static void +GL_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture) +{ + GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata; + GL_TextureData *data = (GL_TextureData *) texture->driverdata; + + GL_ActivateRenderer(renderer); + + if (!data) { + return; + } + if (data->texture) { + renderdata->glDeleteTextures(1, &data->texture); + } + if (data->yuv) { + renderdata->glDeleteTextures(1, &data->utexture); + renderdata->glDeleteTextures(1, &data->vtexture); + } + SDL_free(data->pixels); + SDL_free(data); + texture->driverdata = NULL; +} + +static void +GL_DestroyRenderer(SDL_Renderer * renderer) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + + if (data) { + if (data->context != NULL) { + /* make sure we delete the right resources! */ + GL_ActivateRenderer(renderer); + } + + GL_ClearErrors(renderer); + if (data->GL_ARB_debug_output_supported) { + PFNGLDEBUGMESSAGECALLBACKARBPROC glDebugMessageCallbackARBFunc = (PFNGLDEBUGMESSAGECALLBACKARBPROC) SDL_GL_GetProcAddress("glDebugMessageCallbackARB"); + + /* Uh oh, we don't have a safe way of removing ourselves from the callback chain, if it changed after we set our callback. */ + /* For now, just always replace the callback with the original one */ + glDebugMessageCallbackARBFunc(data->next_error_callback, data->next_error_userparam); + } + if (data->shaders) { + GL_DestroyShaderContext(data->shaders); + } + if (data->context) { + while (data->framebuffers) { + GL_FBOList *nextnode = data->framebuffers->next; + /* delete the framebuffer object */ + data->glDeleteFramebuffersEXT(1, &data->framebuffers->FBO); + GL_CheckError("", renderer); + SDL_free(data->framebuffers); + data->framebuffers = nextnode; + } + SDL_GL_DeleteContext(data->context); + } + SDL_free(data); + } + SDL_free(renderer); +} + +static int +GL_BindTexture (SDL_Renderer * renderer, SDL_Texture *texture, float *texw, float *texh) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata; + GL_ActivateRenderer(renderer); + + data->glEnable(texturedata->type); + if (texturedata->yuv) { + data->glActiveTextureARB(GL_TEXTURE2_ARB); + data->glBindTexture(texturedata->type, texturedata->vtexture); + + data->glActiveTextureARB(GL_TEXTURE1_ARB); + data->glBindTexture(texturedata->type, texturedata->utexture); + + data->glActiveTextureARB(GL_TEXTURE0_ARB); + } + data->glBindTexture(texturedata->type, texturedata->texture); + + if(texw) *texw = (float)texturedata->texw; + if(texh) *texh = (float)texturedata->texh; + + return 0; +} + +static int +GL_UnbindTexture (SDL_Renderer * renderer, SDL_Texture *texture) +{ + GL_RenderData *data = (GL_RenderData *) renderer->driverdata; + GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata; + GL_ActivateRenderer(renderer); + + if (texturedata->yuv) { + data->glActiveTextureARB(GL_TEXTURE2_ARB); + data->glDisable(texturedata->type); + + data->glActiveTextureARB(GL_TEXTURE1_ARB); + data->glDisable(texturedata->type); + + data->glActiveTextureARB(GL_TEXTURE0_ARB); + } + + data->glDisable(texturedata->type); + + return 0; +} + +#endif /* SDL_VIDEO_RENDER_OGL && !SDL_RENDER_DISABLED */ + +/* vi: set ts=4 sw=4 expandtab: */ diff --git a/source/3rd-party/SDL2/src/render/opengl/SDL_shaders_gl.c b/source/3rd-party/SDL2/src/render/opengl/SDL_shaders_gl.c new file mode 100644 index 0000000..251b54d --- /dev/null +++ b/source/3rd-party/SDL2/src/render/opengl/SDL_shaders_gl.c @@ -0,0 +1,524 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ +#include "../../SDL_internal.h" + +#if SDL_VIDEO_RENDER_OGL && !SDL_RENDER_DISABLED + +#include "SDL_stdinc.h" +#include "SDL_log.h" +#include "SDL_opengl.h" +#include "SDL_video.h" +#include "SDL_shaders_gl.h" + +/* OpenGL shader implementation */ + +/* #define DEBUG_SHADERS */ + +typedef struct +{ + GLhandleARB program; + GLhandleARB vert_shader; + GLhandleARB frag_shader; +} GL_ShaderData; + +struct GL_ShaderContext +{ + GLenum (*glGetError)(void); + + PFNGLATTACHOBJECTARBPROC glAttachObjectARB; + PFNGLCOMPILESHADERARBPROC glCompileShaderARB; + PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB; + PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB; + PFNGLDELETEOBJECTARBPROC glDeleteObjectARB; + PFNGLGETINFOLOGARBPROC glGetInfoLogARB; + PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB; + PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocationARB; + PFNGLLINKPROGRAMARBPROC glLinkProgramARB; + PFNGLSHADERSOURCEARBPROC glShaderSourceARB; + PFNGLUNIFORM1IARBPROC glUniform1iARB; + PFNGLUNIFORM1FARBPROC glUniform1fARB; + PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB; + + SDL_bool GL_ARB_texture_rectangle_supported; + + GL_ShaderData shaders[NUM_SHADERS]; +}; + +#define COLOR_VERTEX_SHADER \ +"varying vec4 v_color;\n" \ +"\n" \ +"void main()\n" \ +"{\n" \ +" gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n" \ +" v_color = gl_Color;\n" \ +"}" \ + +#define TEXTURE_VERTEX_SHADER \ +"varying vec4 v_color;\n" \ +"varying vec2 v_texCoord;\n" \ +"\n" \ +"void main()\n" \ +"{\n" \ +" gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n" \ +" v_color = gl_Color;\n" \ +" v_texCoord = vec2(gl_MultiTexCoord0);\n" \ +"}" \ + +#define JPEG_SHADER_CONSTANTS \ +"// YUV offset \n" \ +"const vec3 offset = vec3(0, -0.501960814, -0.501960814);\n" \ +"\n" \ +"// RGB coefficients \n" \ +"const vec3 Rcoeff = vec3(1, 0.000, 1.402);\n" \ +"const vec3 Gcoeff = vec3(1, -0.3441, -0.7141);\n" \ +"const vec3 Bcoeff = vec3(1, 1.772, 0.000);\n" \ + +#define BT601_SHADER_CONSTANTS \ +"// YUV offset \n" \ +"const vec3 offset = vec3(-0.0627451017, -0.501960814, -0.501960814);\n" \ +"\n" \ +"// RGB coefficients \n" \ +"const vec3 Rcoeff = vec3(1.1644, 0.000, 1.596);\n" \ +"const vec3 Gcoeff = vec3(1.1644, -0.3918, -0.813);\n" \ +"const vec3 Bcoeff = vec3(1.1644, 2.0172, 0.000);\n" \ + +#define BT709_SHADER_CONSTANTS \ +"// YUV offset \n" \ +"const vec3 offset = vec3(-0.0627451017, -0.501960814, -0.501960814);\n" \ +"\n" \ +"// RGB coefficients \n" \ +"const vec3 Rcoeff = vec3(1.1644, 0.000, 1.7927);\n" \ +"const vec3 Gcoeff = vec3(1.1644, -0.2132, -0.5329);\n" \ +"const vec3 Bcoeff = vec3(1.1644, 2.1124, 0.000);\n" \ + +#define YUV_SHADER_PROLOGUE \ +"varying vec4 v_color;\n" \ +"varying vec2 v_texCoord;\n" \ +"uniform sampler2D tex0; // Y \n" \ +"uniform sampler2D tex1; // U \n" \ +"uniform sampler2D tex2; // V \n" \ +"\n" \ + +#define YUV_SHADER_BODY \ +"\n" \ +"void main()\n" \ +"{\n" \ +" vec2 tcoord;\n" \ +" vec3 yuv, rgb;\n" \ +"\n" \ +" // Get the Y value \n" \ +" tcoord = v_texCoord;\n" \ +" yuv.x = texture2D(tex0, tcoord).r;\n" \ +"\n" \ +" // Get the U and V values \n" \ +" tcoord *= UVCoordScale;\n" \ +" yuv.y = texture2D(tex1, tcoord).r;\n" \ +" yuv.z = texture2D(tex2, tcoord).r;\n" \ +"\n" \ +" // Do the color transform \n" \ +" yuv += offset;\n" \ +" rgb.r = dot(yuv, Rcoeff);\n" \ +" rgb.g = dot(yuv, Gcoeff);\n" \ +" rgb.b = dot(yuv, Bcoeff);\n" \ +"\n" \ +" // That was easy. :) \n" \ +" gl_FragColor = vec4(rgb, 1.0) * v_color;\n" \ +"}" \ + +#define NV12_SHADER_PROLOGUE \ +"varying vec4 v_color;\n" \ +"varying vec2 v_texCoord;\n" \ +"uniform sampler2D tex0; // Y \n" \ +"uniform sampler2D tex1; // U/V \n" \ +"\n" \ + +#define NV12_SHADER_BODY \ +"\n" \ +"void main()\n" \ +"{\n" \ +" vec2 tcoord;\n" \ +" vec3 yuv, rgb;\n" \ +"\n" \ +" // Get the Y value \n" \ +" tcoord = v_texCoord;\n" \ +" yuv.x = texture2D(tex0, tcoord).r;\n" \ +"\n" \ +" // Get the U and V values \n" \ +" tcoord *= UVCoordScale;\n" \ +" yuv.yz = texture2D(tex1, tcoord).ra;\n" \ +"\n" \ +" // Do the color transform \n" \ +" yuv += offset;\n" \ +" rgb.r = dot(yuv, Rcoeff);\n" \ +" rgb.g = dot(yuv, Gcoeff);\n" \ +" rgb.b = dot(yuv, Bcoeff);\n" \ +"\n" \ +" // That was easy. :) \n" \ +" gl_FragColor = vec4(rgb, 1.0) * v_color;\n" \ +"}" \ + +#define NV21_SHADER_PROLOGUE \ +"varying vec4 v_color;\n" \ +"varying vec2 v_texCoord;\n" \ +"uniform sampler2D tex0; // Y \n" \ +"uniform sampler2D tex1; // U/V \n" \ +"\n" \ + +#define NV21_SHADER_BODY \ +"\n" \ +"void main()\n" \ +"{\n" \ +" vec2 tcoord;\n" \ +" vec3 yuv, rgb;\n" \ +"\n" \ +" // Get the Y value \n" \ +" tcoord = v_texCoord;\n" \ +" yuv.x = texture2D(tex0, tcoord).r;\n" \ +"\n" \ +" // Get the U and V values \n" \ +" tcoord *= UVCoordScale;\n" \ +" yuv.yz = texture2D(tex1, tcoord).ar;\n" \ +"\n" \ +" // Do the color transform \n" \ +" yuv += offset;\n" \ +" rgb.r = dot(yuv, Rcoeff);\n" \ +" rgb.g = dot(yuv, Gcoeff);\n" \ +" rgb.b = dot(yuv, Bcoeff);\n" \ +"\n" \ +" // That was easy. :) \n" \ +" gl_FragColor = vec4(rgb, 1.0) * v_color;\n" \ +"}" \ + +/* + * NOTE: Always use sampler2D, etc here. We'll #define them to the + * texture_rectangle versions if we choose to use that extension. + */ +static const char *shader_source[NUM_SHADERS][2] = +{ + /* SHADER_NONE */ + { NULL, NULL }, + + /* SHADER_SOLID */ + { + /* vertex shader */ + COLOR_VERTEX_SHADER, + /* fragment shader */ +"varying vec4 v_color;\n" +"\n" +"void main()\n" +"{\n" +" gl_FragColor = v_color;\n" +"}" + }, + + /* SHADER_RGB */ + { + /* vertex shader */ + TEXTURE_VERTEX_SHADER, + /* fragment shader */ +"varying vec4 v_color;\n" +"varying vec2 v_texCoord;\n" +"uniform sampler2D tex0;\n" +"\n" +"void main()\n" +"{\n" +" gl_FragColor = texture2D(tex0, v_texCoord) * v_color;\n" +"}" + }, + + /* SHADER_YUV_JPEG */ + { + /* vertex shader */ + TEXTURE_VERTEX_SHADER, + /* fragment shader */ + YUV_SHADER_PROLOGUE + JPEG_SHADER_CONSTANTS + YUV_SHADER_BODY + }, + /* SHADER_YUV_BT601 */ + { + /* vertex shader */ + TEXTURE_VERTEX_SHADER, + /* fragment shader */ + YUV_SHADER_PROLOGUE + BT601_SHADER_CONSTANTS + YUV_SHADER_BODY + }, + /* SHADER_YUV_BT709 */ + { + /* vertex shader */ + TEXTURE_VERTEX_SHADER, + /* fragment shader */ + YUV_SHADER_PROLOGUE + BT709_SHADER_CONSTANTS + YUV_SHADER_BODY + }, + /* SHADER_NV12_JPEG */ + { + /* vertex shader */ + TEXTURE_VERTEX_SHADER, + /* fragment shader */ + NV12_SHADER_PROLOGUE + JPEG_SHADER_CONSTANTS + NV12_SHADER_BODY + }, + /* SHADER_NV12_BT601 */ + { + /* vertex shader */ + TEXTURE_VERTEX_SHADER, + /* fragment shader */ + NV12_SHADER_PROLOGUE + BT601_SHADER_CONSTANTS + NV12_SHADER_BODY + }, + /* SHADER_NV12_BT709 */ + { + /* vertex shader */ + TEXTURE_VERTEX_SHADER, + /* fragment shader */ + NV12_SHADER_PROLOGUE + BT709_SHADER_CONSTANTS + NV12_SHADER_BODY + }, + /* SHADER_NV21_JPEG */ + { + /* vertex shader */ + TEXTURE_VERTEX_SHADER, + /* fragment shader */ + NV21_SHADER_PROLOGUE + JPEG_SHADER_CONSTANTS + NV21_SHADER_BODY + }, + /* SHADER_NV21_BT601 */ + { + /* vertex shader */ + TEXTURE_VERTEX_SHADER, + /* fragment shader */ + NV21_SHADER_PROLOGUE + BT601_SHADER_CONSTANTS + NV21_SHADER_BODY + }, + /* SHADER_NV21_BT709 */ + { + /* vertex shader */ + TEXTURE_VERTEX_SHADER, + /* fragment shader */ + NV21_SHADER_PROLOGUE + BT709_SHADER_CONSTANTS + NV21_SHADER_BODY + }, +}; + +static SDL_bool +CompileShader(GL_ShaderContext *ctx, GLhandleARB shader, const char *defines, const char *source) +{ + GLint status; + const char *sources[2]; + + sources[0] = defines; + sources[1] = source; + + ctx->glShaderSourceARB(shader, SDL_arraysize(sources), sources, NULL); + ctx->glCompileShaderARB(shader); + ctx->glGetObjectParameterivARB(shader, GL_OBJECT_COMPILE_STATUS_ARB, &status); + if (status == 0) { + GLint length; + char *info; + + ctx->glGetObjectParameterivARB(shader, GL_OBJECT_INFO_LOG_LENGTH_ARB, &length); + info = SDL_stack_alloc(char, length+1); + ctx->glGetInfoLogARB(shader, length, NULL, info); + SDL_LogError(SDL_LOG_CATEGORY_RENDER, + "Failed to compile shader:\n%s%s\n%s", defines, source, info); +#ifdef DEBUG_SHADERS + fprintf(stderr, + "Failed to compile shader:\n%s%s\n%s", defines, source, info); +#endif + SDL_stack_free(info); + + return SDL_FALSE; + } else { + return SDL_TRUE; + } +} + +static SDL_bool +CompileShaderProgram(GL_ShaderContext *ctx, int index, GL_ShaderData *data) +{ + const int num_tmus_bound = 4; + const char *vert_defines = ""; + const char *frag_defines = ""; + int i; + GLint location; + + if (index == SHADER_NONE) { + return SDL_TRUE; + } + + ctx->glGetError(); + + /* Make sure we use the correct sampler type for our texture type */ + if (ctx->GL_ARB_texture_rectangle_supported) { + frag_defines = +"#define sampler2D sampler2DRect\n" +"#define texture2D texture2DRect\n" +"#define UVCoordScale 0.5\n"; + } else { + frag_defines = +"#define UVCoordScale 1.0\n"; + } + + /* Create one program object to rule them all */ + data->program = ctx->glCreateProgramObjectARB(); + + /* Create the vertex shader */ + data->vert_shader = ctx->glCreateShaderObjectARB(GL_VERTEX_SHADER_ARB); + if (!CompileShader(ctx, data->vert_shader, vert_defines, shader_source[index][0])) { + return SDL_FALSE; + } + + /* Create the fragment shader */ + data->frag_shader = ctx->glCreateShaderObjectARB(GL_FRAGMENT_SHADER_ARB); + if (!CompileShader(ctx, data->frag_shader, frag_defines, shader_source[index][1])) { + return SDL_FALSE; + } + + /* ... and in the darkness bind them */ + ctx->glAttachObjectARB(data->program, data->vert_shader); + ctx->glAttachObjectARB(data->program, data->frag_shader); + ctx->glLinkProgramARB(data->program); + + /* Set up some uniform variables */ + ctx->glUseProgramObjectARB(data->program); + for (i = 0; i < num_tmus_bound; ++i) { + char tex_name[10]; + SDL_snprintf(tex_name, SDL_arraysize(tex_name), "tex%d", i); + location = ctx->glGetUniformLocationARB(data->program, tex_name); + if (location >= 0) { + ctx->glUniform1iARB(location, i); + } + } + ctx->glUseProgramObjectARB(0); + + return (ctx->glGetError() == GL_NO_ERROR); +} + +static void +DestroyShaderProgram(GL_ShaderContext *ctx, GL_ShaderData *data) +{ + ctx->glDeleteObjectARB(data->vert_shader); + ctx->glDeleteObjectARB(data->frag_shader); + ctx->glDeleteObjectARB(data->program); +} + +GL_ShaderContext * +GL_CreateShaderContext(void) +{ + GL_ShaderContext *ctx; + SDL_bool shaders_supported; + int i; + + ctx = (GL_ShaderContext *)SDL_calloc(1, sizeof(*ctx)); + if (!ctx) { + return NULL; + } + + if (!SDL_GL_ExtensionSupported("GL_ARB_texture_non_power_of_two") && + (SDL_GL_ExtensionSupported("GL_ARB_texture_rectangle") || + SDL_GL_ExtensionSupported("GL_EXT_texture_rectangle"))) { + ctx->GL_ARB_texture_rectangle_supported = SDL_TRUE; + } + + /* Check for shader support */ + shaders_supported = SDL_FALSE; + if (SDL_GL_ExtensionSupported("GL_ARB_shader_objects") && + SDL_GL_ExtensionSupported("GL_ARB_shading_language_100") && + SDL_GL_ExtensionSupported("GL_ARB_vertex_shader") && + SDL_GL_ExtensionSupported("GL_ARB_fragment_shader")) { + ctx->glGetError = (GLenum (*)(void)) SDL_GL_GetProcAddress("glGetError"); + ctx->glAttachObjectARB = (PFNGLATTACHOBJECTARBPROC) SDL_GL_GetProcAddress("glAttachObjectARB"); + ctx->glCompileShaderARB = (PFNGLCOMPILESHADERARBPROC) SDL_GL_GetProcAddress("glCompileShaderARB"); + ctx->glCreateProgramObjectARB = (PFNGLCREATEPROGRAMOBJECTARBPROC) SDL_GL_GetProcAddress("glCreateProgramObjectARB"); + ctx->glCreateShaderObjectARB = (PFNGLCREATESHADEROBJECTARBPROC) SDL_GL_GetProcAddress("glCreateShaderObjectARB"); + ctx->glDeleteObjectARB = (PFNGLDELETEOBJECTARBPROC) SDL_GL_GetProcAddress("glDeleteObjectARB"); + ctx->glGetInfoLogARB = (PFNGLGETINFOLOGARBPROC) SDL_GL_GetProcAddress("glGetInfoLogARB"); + ctx->glGetObjectParameterivARB = (PFNGLGETOBJECTPARAMETERIVARBPROC) SDL_GL_GetProcAddress("glGetObjectParameterivARB"); + ctx->glGetUniformLocationARB = (PFNGLGETUNIFORMLOCATIONARBPROC) SDL_GL_GetProcAddress("glGetUniformLocationARB"); + ctx->glLinkProgramARB = (PFNGLLINKPROGRAMARBPROC) SDL_GL_GetProcAddress("glLinkProgramARB"); + ctx->glShaderSourceARB = (PFNGLSHADERSOURCEARBPROC) SDL_GL_GetProcAddress("glShaderSourceARB"); + ctx->glUniform1iARB = (PFNGLUNIFORM1IARBPROC) SDL_GL_GetProcAddress("glUniform1iARB"); + ctx->glUniform1fARB = (PFNGLUNIFORM1FARBPROC) SDL_GL_GetProcAddress("glUniform1fARB"); + ctx->glUseProgramObjectARB = (PFNGLUSEPROGRAMOBJECTARBPROC) SDL_GL_GetProcAddress("glUseProgramObjectARB"); + if (ctx->glGetError && + ctx->glAttachObjectARB && + ctx->glCompileShaderARB && + ctx->glCreateProgramObjectARB && + ctx->glCreateShaderObjectARB && + ctx->glDeleteObjectARB && + ctx->glGetInfoLogARB && + ctx->glGetObjectParameterivARB && + ctx->glGetUniformLocationARB && + ctx->glLinkProgramARB && + ctx->glShaderSourceARB && + ctx->glUniform1iARB && + ctx->glUniform1fARB && + ctx->glUseProgramObjectARB) { + shaders_supported = SDL_TRUE; + } + } + + if (!shaders_supported) { + SDL_free(ctx); + return NULL; + } + + /* Compile all the shaders */ + for (i = 0; i < NUM_SHADERS; ++i) { + if (!CompileShaderProgram(ctx, i, &ctx->shaders[i])) { + GL_DestroyShaderContext(ctx); + return NULL; + } + } + + /* We're done! */ + return ctx; +} + +void +GL_SelectShader(GL_ShaderContext *ctx, GL_Shader shader) +{ + ctx->glUseProgramObjectARB(ctx->shaders[shader].program); +} + +void +GL_DestroyShaderContext(GL_ShaderContext *ctx) +{ + int i; + + for (i = 0; i < NUM_SHADERS; ++i) { + DestroyShaderProgram(ctx, &ctx->shaders[i]); + } + SDL_free(ctx); +} + +#endif /* SDL_VIDEO_RENDER_OGL && !SDL_RENDER_DISABLED */ + +/* vi: set ts=4 sw=4 expandtab: */ diff --git a/source/3rd-party/SDL2/src/render/opengl/SDL_shaders_gl.h b/source/3rd-party/SDL2/src/render/opengl/SDL_shaders_gl.h new file mode 100644 index 0000000..3697521 --- /dev/null +++ b/source/3rd-party/SDL2/src/render/opengl/SDL_shaders_gl.h @@ -0,0 +1,53 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +#ifndef SDL_shaders_gl_h_ +#define SDL_shaders_gl_h_ + +#include "../../SDL_internal.h" + +/* OpenGL shader implementation */ + +typedef enum { + SHADER_NONE, + SHADER_SOLID, + SHADER_RGB, + SHADER_YUV_JPEG, + SHADER_YUV_BT601, + SHADER_YUV_BT709, + SHADER_NV12_JPEG, + SHADER_NV12_BT601, + SHADER_NV12_BT709, + SHADER_NV21_JPEG, + SHADER_NV21_BT601, + SHADER_NV21_BT709, + NUM_SHADERS +} GL_Shader; + +typedef struct GL_ShaderContext GL_ShaderContext; + +extern GL_ShaderContext * GL_CreateShaderContext(void); +extern void GL_SelectShader(GL_ShaderContext *ctx, GL_Shader shader); +extern void GL_DestroyShaderContext(GL_ShaderContext *ctx); + +#endif /* SDL_shaders_gl_h_ */ + +/* vi: set ts=4 sw=4 expandtab: */ |