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-rw-r--r--src/libjin/render/canvas.cpp123
-rw-r--r--src/libjin/render/canvas.h33
-rw-r--r--src/libjin/render/color.h27
-rw-r--r--src/libjin/render/drawable.cpp92
-rw-r--r--src/libjin/render/drawable.h47
-rw-r--r--src/libjin/render/font.cpp189
-rw-r--r--src/libjin/render/font.h58
-rw-r--r--src/libjin/render/graphics.cpp115
-rw-r--r--src/libjin/render/graphics.h37
-rw-r--r--src/libjin/render/image.cpp97
-rw-r--r--src/libjin/render/image.h34
-rw-r--r--src/libjin/render/jsl.cpp84
-rw-r--r--src/libjin/render/jsl.h44
-rw-r--r--src/libjin/render/quad.h17
-rw-r--r--src/libjin/render/rect.h12
-rw-r--r--src/libjin/render/window.cpp83
-rw-r--r--src/libjin/render/window.h53
17 files changed, 1145 insertions, 0 deletions
diff --git a/src/libjin/render/canvas.cpp b/src/libjin/render/canvas.cpp
new file mode 100644
index 0000000..494b0fa
--- /dev/null
+++ b/src/libjin/render/canvas.cpp
@@ -0,0 +1,123 @@
+#include "utils/macros.h"
+#include "canvas.h"
+#include "window.h"
+
+namespace jin
+{
+namespace render
+{
+ Canvas::Canvas() :Drawable()
+ {
+ }
+
+ Canvas::~Canvas()
+ {
+ }
+
+ // no canvas has binded
+ shared GLint Canvas::cur = -1;
+
+ bool Canvas::init(int w, int h)
+ {
+ Drawable::init(w, h);
+ Drawable::setVertices(
+ new float [DRAWABLE_V_SIZE] {
+ 0, 0,
+ 0, (float)h,
+ (float)w, (float)h,
+ (float)w, 0,
+ },
+ new float [DRAWABLE_V_SIZE] {
+ 0, 1,
+ 0, 0,
+ 1, 0,
+ 1, 1
+ }
+ );
+
+ GLint current_fbo;
+ glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &current_fbo);
+
+ // generate a new render buffer object
+ glGenFramebuffers(1, &fbo);
+ glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+
+ // generate texture save target
+ glGenTextures(1, &texture);
+ glBindTexture(GL_TEXTURE_2D, texture);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+ glBindTexture(GL_TEXTURE_2D, 0);
+ glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
+
+ GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+
+ // unbind framebuffer
+ glBindFramebuffer(GL_FRAMEBUFFER, current_fbo);
+
+ if (status != GL_FRAMEBUFFER_COMPLETE_EXT)
+ return false;
+ return true;
+ }
+
+ bool Canvas::hasbind(GLint fbo)
+ {
+ return cur == fbo;
+ }
+
+ /**
+ * bind to canvas
+ */
+ void Canvas::bind()
+ {
+ if (hasbind(fbo)) return;
+
+ cur = fbo;
+
+ glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+
+ glMatrixMode(GL_PROJECTION);
+ glPushMatrix();
+ glLoadIdentity();
+
+ glViewport(0, 0, width, height);
+ glOrtho(0, width, height, 0, -1, 1);
+
+ // Switch back to modelview matrix
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+ glLoadIdentity();
+ }
+
+ /**
+ * bind to default screen render buffer.
+ */
+ shared void Canvas::unbind()
+ {
+ if (hasbind(0)) return;
+
+ cur = 0;
+
+ glBindFramebuffer(GL_FRAMEBUFFER, 0);
+ Window* wnd = Window::get();
+ int ww = wnd->getW(),
+ wh = wnd->getH();
+
+ glViewport(0, 0, ww, wh);
+
+ // load back to normal
+ glMatrixMode(GL_PROJECTION);
+ glPushMatrix();
+ glLoadIdentity();
+
+ // set viewport matrix
+ glOrtho(0, ww, wh, 0, -1, 1);
+
+ // switch to model matrix
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+ glLoadIdentity();
+ }
+}
+} \ No newline at end of file
diff --git a/src/libjin/render/canvas.h b/src/libjin/render/canvas.h
new file mode 100644
index 0000000..4600f8b
--- /dev/null
+++ b/src/libjin/render/canvas.h
@@ -0,0 +1,33 @@
+#ifndef __JIN_CANVAS_H
+#define __JIN_CANVAS_H
+#include "drawable.h"
+namespace jin
+{
+namespace render
+{
+ class Canvas: public Drawable
+ {
+ public:
+
+ Canvas();
+ ~Canvas();
+
+ bool init(int w, int h);
+
+ void bind();
+
+ static void unbind();
+
+ static bool hasbind(GLint fbo);
+
+ private:
+
+ GLuint fbo;
+
+ // current binded fbo
+ static GLint cur;
+ };
+}
+}// jin
+
+#endif
diff --git a/src/libjin/render/color.h b/src/libjin/render/color.h
new file mode 100644
index 0000000..dfb02e1
--- /dev/null
+++ b/src/libjin/render/color.h
@@ -0,0 +1,27 @@
+/**
+* Some color operating here.
+*/
+#ifndef __JIN_COLOR_H
+#define __JIN_COLOR_H
+#include "utils/endian.h"
+
+namespace jin
+{
+namespace render
+{
+
+ union color {
+ struct {
+#if JIN_BYTEORDER == JIN_BIG_ENDIAN
+ unsigned char r, g, b, a;
+#else
+ unsigned char a, b, g, r;
+#endif
+ }rgba;
+ int word;
+ };
+
+}
+}
+
+#endif
diff --git a/src/libjin/render/drawable.cpp b/src/libjin/render/drawable.cpp
new file mode 100644
index 0000000..45d6044
--- /dev/null
+++ b/src/libjin/render/drawable.cpp
@@ -0,0 +1,92 @@
+#include "drawable.h"
+#include "utils/matrix.h"
+#include <stdlib.h>
+namespace jin
+{
+namespace render
+{
+ Drawable::Drawable():texture(0), width(0), height(0), ancx(0), ancy(0), textCoord(0), vertCoord(0)
+ {
+ }
+
+ Drawable::~Drawable()
+ {
+ glDeleteTextures(1, &texture);
+ delete[] vertCoord;
+ delete[] textCoord;
+ }
+
+ void Drawable::init(int w, int h)
+ {
+ texture = 0;
+ width = w;
+ height = h;
+ ancx = 0;
+ ancy = 0;
+ textCoord = 0;
+ vertCoord = 0;
+ }
+
+ void Drawable::setVertices(float* v, float* t)
+ {
+ // render area
+ if (vertCoord)
+ delete[] vertCoord;
+ vertCoord = v;
+
+ // textrue
+ if (textCoord)
+ delete[] textCoord;
+ textCoord = t;
+ }
+
+ void Drawable::setAnchor(int x, int y)
+ {
+ ancx = x;
+ ancy = y;
+ }
+
+ int Drawable::getWidth()
+ {
+ return width;
+ }
+
+ int Drawable::getHeight()
+ {
+ return height;
+ }
+
+ void Drawable::draw(int x, int y, float sx, float sy, float r)
+ {
+ // Must set textCoord and vertCoord before renderring
+ if (! textCoord||! vertCoord) return;
+
+ static jin::util::Matrix t;
+ t.setTransformation(x, y, r, sx, sy, ancx, ancy);
+
+ glEnable(GL_TEXTURE_2D);
+
+ glBindTexture(GL_TEXTURE_2D, texture);
+
+ // push modle matrix
+ glPushMatrix();
+ glMultMatrixf((const GLfloat*)t.getElements());
+
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+ glTexCoordPointer(2, GL_FLOAT, 0, textCoord);
+ glVertexPointer(2, GL_FLOAT, 0, vertCoord);
+ glDrawArrays(GL_QUADS, 0, 4);
+ glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+ glDisableClientState(GL_VERTEX_ARRAY);
+
+ // pop the model matrix
+ glPopMatrix();
+
+ // bind texture to default screen
+ glBindTexture(GL_TEXTURE_2D, 0);
+
+ glDisable(GL_TEXTURE_2D);
+ }
+}
+}
diff --git a/src/libjin/render/drawable.h b/src/libjin/render/drawable.h
new file mode 100644
index 0000000..5eaf705
--- /dev/null
+++ b/src/libjin/render/drawable.h
@@ -0,0 +1,47 @@
+#ifndef __JIN_DRAWABLE
+#define __JIN_DRAWABLE
+#include "3rdparty/GLee/GLee.h"
+namespace jin
+{
+namespace render
+{
+ class Drawable
+ {
+ public:
+
+ Drawable();
+ virtual ~Drawable();
+
+ /* pseudo constructor*/
+ void init(int w = 0, int h = 0);
+
+ /* set anchor of texture, (0, 0) by default */
+ void setAnchor(int x, int y);
+
+ void draw(int x, int y, float sx, float sy, float r);
+
+ int getWidth();
+ int getHeight();
+
+ inline GLuint getTexture() const { return texture; };
+
+ protected:
+#define DRAWABLE_V_SIZE 8
+ void setVertices(float* v, float* t);
+
+ GLuint texture;
+
+ int width, height;
+
+ /* anchor point */
+ int ancx, ancy;
+
+ // render coords
+ float* textCoord;
+ float* vertCoord;
+
+ };
+}
+}// jin
+
+#endif
diff --git a/src/libjin/render/font.cpp b/src/libjin/render/font.cpp
new file mode 100644
index 0000000..287e0c0
--- /dev/null
+++ b/src/libjin/render/font.cpp
@@ -0,0 +1,189 @@
+#include "font.h"
+
+#include <stdio.h>
+
+#define STB_TRUETYPE_IMPLEMENTATION
+#include "3rdparty/stb/stb_truetype.h"
+#include "color.h"
+
+namespace jin
+{
+namespace render
+{
+
+#define BITMAP_WIDTH 512
+#define BITMAP_HEIGHT 512
+#define PIXEL_HEIGHT 32
+
+ Font::Font():Drawable()
+ {
+ }
+
+ // ttf file read buffer
+ static unsigned char ttf_buffer[1 << 20];
+
+ // bitmap for saving font data
+ static unsigned char temp_bitmap[BITMAP_WIDTH * BITMAP_HEIGHT];
+
+ void Font::loadf(const char* path)
+ {
+ fread(ttf_buffer, 1, 1 << 20, fopen(path, "rb"));
+
+ loadb(ttf_buffer);
+ }
+
+ /**
+ * load from memory
+ */
+ void Font::loadb(const unsigned char* data)
+ {
+ stbtt_BakeFontBitmap(data, 0, PIXEL_HEIGHT, temp_bitmap, BITMAP_WIDTH, BITMAP_HEIGHT, 32, 96, cdata);
+
+ glGenTextures(1, &texture);
+ glBindTexture(GL_TEXTURE_2D, texture);
+
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, BITMAP_WIDTH,
+ BITMAP_HEIGHT, 0, GL_ALPHA, GL_UNSIGNED_BYTE, temp_bitmap);
+
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+ glBindTexture(GL_TEXTURE_2D, 0);
+ }
+
+ /**
+ * get texture quad
+ */
+ static Quad getCharQuad(const stbtt_bakedchar* chardata, int pw, int ph, int char_index)
+ {
+ float ipw = 1.0f / pw, iph = 1.0f / ph;
+ const stbtt_bakedchar *b = chardata + char_index;
+ Quad q;
+ q.x = b->x0 * ipw;
+ q.y = b->y0 * iph;
+ q.w = b->x1 * ipw - b->x0 * ipw;
+ q.h = b->y1 * iph - b->y0 * iph;
+ return q;
+ }
+
+ /**
+ * render function draw mutiple times
+ * in loop
+ */
+ void Font::render(
+ const char* text, // rendered text
+ float x, float y, // render position
+ int fheight, // font height
+ int spacing, // font spacing
+ int lheight) // line height
+ {
+ float _x = x,
+ _y = y;
+
+ int len = strlen(text);
+
+ glEnable(GL_TEXTURE_2D);
+ glBindTexture(GL_TEXTURE_2D, texture);
+
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+
+ // for saving clip quad
+ stbtt_aligned_quad q;
+
+ // render every given character
+ int xc = x;
+ int yc = y;
+
+ float factor = fheight / (float)PIXEL_HEIGHT;
+
+ for (int i = 0; i < len; ++i)
+ {
+ char c = text[i];
+ if (c == '\n')
+ {
+ xc = x;
+ yc += lheight;
+ continue;
+ }
+
+ // only support ASCII
+ Quad q = getCharQuad(cdata, 512, 512, c - 32);
+ float s0 = q.x,
+ s1 = q.x + q.w,
+ t0 = q.y,
+ t1 = q.y + q.h;
+
+ // texture quad
+ float tc[] = {
+ s0, t1,
+ s1, t1,
+ s1, t0,
+ s0, t0
+ };
+
+ // character bound box
+ stbtt_bakedchar box = cdata[c - 32];
+
+ float width = factor * (box.x1 - box.x0);
+ float height = factor * (box.y1 - box.y0);
+ float xoffset = factor * box.xoff;
+ // I don't know why add PIXEL_HEIGHT to box.yoff, but
+ // it works.
+ float yoffset = factor * (box.yoff + PIXEL_HEIGHT);
+ float xadvance = factor * box.xadvance;
+
+ // render quad
+ float vc[] = {
+ xc + xoffset, yc + height + yoffset,
+ xc + width + xoffset, yc + height + yoffset,
+ xc + width + xoffset, yc + yoffset,
+ xc + xoffset, yc + yoffset
+ };
+
+ // forward to next character
+ xc += xadvance + spacing;
+
+ glTexCoordPointer(2, GL_FLOAT, 0, tc);
+ glVertexPointer(2, GL_FLOAT, 0, vc);
+ glDrawArrays(GL_QUADS, 0, 4);
+ }
+
+ glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+ glDisableClientState(GL_VERTEX_ARRAY);
+
+ glBindTexture(GL_TEXTURE_2D, 0);
+ glDisable(GL_TEXTURE_2D);
+ }
+
+ void Font::box(const char* str, int fheight, int spacing, int lheight, int* w, int * h)
+ {
+ int len = strlen(str);
+
+ float xc = 0;
+ int yc = len ? lheight: 0;
+ int maxX = 0;
+
+ float factor = fheight / (float)PIXEL_HEIGHT;
+
+ for (int i = 0; i < len; ++i)
+ {
+ char c = str[i];
+ if (c == '\n')
+ {
+ yc += lheight;
+ xc = 0;
+ continue;
+ }
+ stbtt_bakedchar box = cdata[c - 32];
+
+ xc += factor * box.xadvance + spacing;
+ if (xc > maxX) maxX = xc;
+ }
+
+ *w = maxX;
+ *h = yc;
+ }
+
+}
+} \ No newline at end of file
diff --git a/src/libjin/render/font.h b/src/libjin/render/font.h
new file mode 100644
index 0000000..98a41b4
--- /dev/null
+++ b/src/libjin/render/font.h
@@ -0,0 +1,58 @@
+#ifndef __JIN_FONT_H
+#define __JIN_FONT_H
+
+#include "drawable.h"
+#include "3rdparty/stb/stb_truetype.h"
+#include "quad.h"
+
+namespace jin
+{
+namespace render
+{
+ /**
+ * Usage of stb_truetype.h here might be a little
+ * bit dummy. Implementation of Font is referring
+ * to stb_truetype.h L243~284. I basicly copy it:)
+ */
+ class Font: public Drawable
+ {
+ public:
+
+ Font();
+
+ /**
+ * load ttf font data from .ttf
+ */
+ void loadf(const char* file);
+
+ /**
+ * load ttf font data from memory
+ */
+ void loadb(const unsigned char* data);
+
+ /**
+ * render text to screen
+ */
+ void render(
+ const char* str, // rendered text
+ float x, float y, // render position
+ int fheight, // font size
+ int spacing, // font spacing
+ int lheight // line height
+ );
+
+ void box(const char* str, int fheight, int spacing, int lheight, int* w, int * h);
+
+ private:
+
+ /**
+ * ASCII 32(space)..126(~) is 95 glyphs
+ */
+ stbtt_bakedchar cdata[96];
+
+ };
+
+}
+}
+
+#endif \ No newline at end of file
diff --git a/src/libjin/render/graphics.cpp b/src/libjin/render/graphics.cpp
new file mode 100644
index 0000000..15d8a9c
--- /dev/null
+++ b/src/libjin/render/graphics.cpp
@@ -0,0 +1,115 @@
+#include "graphics.h"
+#include "utils/math.h"
+#include <string>
+namespace jin
+{
+namespace render
+{
+
+ void point(int x, int y)
+ {
+ float vers[] = { x + 0.5f , y + 0.5f };
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glVertexPointer(2, GL_FLOAT, 0, (GLvoid*)vers);
+ glDrawArrays(GL_POINTS, 0, 1);
+ glDisableClientState(GL_VERTEX_ARRAY);
+ }
+
+ void points(int n, GLshort* p)
+ {
+ glEnableClientState(GL_VERTEX_ARRAY);
+
+ glVertexPointer(2, GL_SHORT, 0, (GLvoid*)p);
+ glDrawArrays(GL_POINTS, 0, n);
+
+ glDisableClientState(GL_VERTEX_ARRAY);
+ }
+
+ void line(int x1, int y1, int x2, int y2)
+ {
+ glDisable(GL_TEXTURE_2D);
+ float verts[] = {
+ x1, y1,
+ x2, y2
+ };
+
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glVertexPointer(2, GL_FLOAT, 0, (GLvoid*)verts);
+ glDrawArrays(GL_LINES, 0, 2);
+ glDisableClientState(GL_VERTEX_ARRAY);
+ }
+
+ void circle(RENDER_MODE mode, int x, int y, int r)
+ {
+ r = r < 0 ? 0 : r;
+
+ int points = 40;
+ float two_pi = static_cast<float>(PI * 2);
+ if (points <= 0) points = 1;
+ float angle_shift = (two_pi / points);
+ float phi = .0f;
+
+ float *coords = new float[2 * (points + 1)];
+ for (int i = 0; i < points; ++i, phi += angle_shift)
+ {
+ coords[2 * i] = x + r * cos(phi);
+ coords[2 * i + 1] = y + r * sin(phi);
+ }
+
+ coords[2 * points] = coords[0];
+ coords[2 * points + 1] = coords[1];
+
+ polygon(mode, coords, points);
+
+ delete[] coords;
+ }
+
+ void rect(RENDER_MODE mode, int x, int y, int w, int h)
+ {
+ float coords[] = { x, y, x + w, y, x + w, y + h, x, y + h };
+ polygon(mode, coords, 4);
+ }
+
+ void triangle(RENDER_MODE mode, int x1, int y1, int x2, int y2, int x3, int y3)
+ {
+ float coords[] = { x1, y1, x2, y2, x3, y3 };
+ polygon(mode, coords, 3);
+ }
+
+ void polygon_line(float* p, int count)
+ {
+ float* verts = new float[count * 4];
+ for (int i = 0; i < count; ++i)
+ {
+ // each line has two point n,n+1
+ verts[i * 4] = p[i * 2];
+ verts[i * 4 + 1] = p[i * 2 + 1];
+ verts[i * 4 + 2] = p[(i + 1) % count * 2];
+ verts[i * 4 + 3] = p[(i + 1) % count * 2 + 1];
+ }
+
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glVertexPointer(2, GL_FLOAT, 0, (GLvoid*)verts);
+ glDrawArrays(GL_LINES, 0, count * 2);
+ glDisableClientState(GL_VERTEX_ARRAY);
+
+ delete[] verts;
+ }
+
+ void polygon(RENDER_MODE mode, float* p, int count)
+ {
+ if (mode == LINE)
+ {
+ polygon_line(p, count);
+ }
+ else if (mode == FILL)
+ {
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glVertexPointer(2, GL_FLOAT, 0, (const GLvoid*)p);
+ glDrawArrays(GL_POLYGON, 0, count);
+ glDisableClientState(GL_VERTEX_ARRAY);
+ }
+ }
+
+}
+}
diff --git a/src/libjin/render/graphics.h b/src/libjin/render/graphics.h
new file mode 100644
index 0000000..242b19d
--- /dev/null
+++ b/src/libjin/render/graphics.h
@@ -0,0 +1,37 @@
+#ifndef __JIN_GRAPHICS_H
+#define __JIN_GRAPHICS_H
+
+#include "color.h"
+#include "canvas.h"
+#include "image.h"
+
+namespace jin
+{
+namespace render
+{
+ typedef enum {
+ NONE = 0,
+ FILL ,
+ LINE
+ }RENDER_MODE;
+
+ /**
+ * TODO:
+ * drawPixels(int n, points)
+ */
+ extern void line(int x1, int y1, int x2, int y2);
+
+ extern void rect(RENDER_MODE mode, int x, int y, int w, int h);
+
+ extern void triangle(RENDER_MODE mode, int x1, int y1, int x2, int y2, int x3, int y3);
+
+ extern void circle(RENDER_MODE mode, int x, int y, int r);
+
+ extern void point(int x, int y);
+
+ extern void points(int n, GLshort* p, GLubyte* c);
+
+ extern void polygon(RENDER_MODE mode, float* p, int count);
+}
+}
+#endif
diff --git a/src/libjin/render/image.cpp b/src/libjin/render/image.cpp
new file mode 100644
index 0000000..ac5947a
--- /dev/null
+++ b/src/libjin/render/image.cpp
@@ -0,0 +1,97 @@
+#include "image.h"
+#include "3rdparty/stb/stb_image.h"
+#include "utils/utils.h"
+namespace jin
+{
+namespace render
+{
+ Image::Image(): Drawable(), pixels(0)
+ {
+ }
+
+ Image::~Image()
+ {
+ stbi_image_free(pixels);
+ }
+
+ void Image::init()
+ {
+ Drawable::init();
+ pixels = 0;
+ }
+
+ color Image::getPixel(int x, int y)
+ {
+ if (without(x, 0, width) || without(y, 0, height))
+ {
+ return { 0 };
+ }
+ return pixels[x + y * width];
+ }
+
+ bool Image::loadf(const char* f)
+ {
+ unsigned char* imageData = stbi_load(f, &width, &height, NULL, STBI_rgb_alpha);
+ if (imageData == 0) return false;
+ pixels = (color*)imageData;
+
+ glGenTextures(1, &texture);
+ glBindTexture(GL_TEXTURE_2D, texture);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width,
+ height, 0, GL_RGBA, GL_UNSIGNED_BYTE, imageData);
+
+ // set render vertices
+ Drawable::setVertices(
+ new float [DRAWABLE_V_SIZE] {
+ 0, 0,
+ 0, (float)height,
+ (float)width, (float)height,
+ (float)width, 0,
+ },
+ new float [DRAWABLE_V_SIZE] {
+ 0, 0,
+ 0, 1,
+ 1, 1,
+ 1, 0
+ }
+ );
+
+ return true;
+ }
+
+ bool Image::loadb(const char* b, int size)
+ {
+ // ʹstbi_load_from_memory
+ unsigned char* imageData = stbi_load_from_memory((unsigned char *)b, size, &width, &height, NULL, STBI_rgb_alpha);
+ if (imageData == 0) return false;
+ pixels = (color*)imageData;
+
+ glGenTextures(1, &texture);
+ glBindTexture(GL_TEXTURE_2D, texture);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width,
+ height, 0, GL_RGBA, GL_UNSIGNED_BYTE, imageData);
+
+ // set render vertices
+ Drawable::setVertices(
+ new float [DRAWABLE_V_SIZE] {
+ 0, 0,
+ 0, (float)height,
+ (float)width, (float)height,
+ (float)width, 0,
+ },
+ new float [DRAWABLE_V_SIZE] {
+ 0, 0,
+ 0, 1,
+ 1, 1,
+ 1, 0
+ }
+ );
+
+ return true;
+ }
+}
+} \ No newline at end of file
diff --git a/src/libjin/render/image.h b/src/libjin/render/image.h
new file mode 100644
index 0000000..7375fc4
--- /dev/null
+++ b/src/libjin/render/image.h
@@ -0,0 +1,34 @@
+#ifndef __JIN_IMAGE_H
+#define __JIN_IMAGE_H
+#include "3rdparty/GLee/GLee.h"
+#include "color.h"
+#include "drawable.h"
+namespace jin
+{
+namespace render
+{
+ class Image: public Drawable
+ {
+ public:
+ Image();
+ ~Image();
+
+ // just like Image()
+ void init();
+
+ // load from file
+ bool loadf(const char* f);
+
+ // load from memory
+ bool loadb(const char* b, int size);
+
+ color getPixel(int x, int y);
+
+ private:
+
+ color* pixels;
+ };
+}
+}
+
+#endif \ No newline at end of file
diff --git a/src/libjin/render/jsl.cpp b/src/libjin/render/jsl.cpp
new file mode 100644
index 0000000..6fcee53
--- /dev/null
+++ b/src/libjin/render/jsl.cpp
@@ -0,0 +1,84 @@
+#include "utils/macros.h"
+#include "jsl.h"
+namespace jin
+{
+namespace render
+{
+ //vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 screen_coords)
+ static const char* base_f = " "
+ "#version 120 \n"
+ "#define number float \n"
+ "#define Image sampler2D \n"
+ "#define Texel texture2D \n"
+ "#define extern uniform \n"
+ "uniform sampler2D _tex0_; \n"
+ "%s \n"
+ "void main(){ \n"
+ "gl_FragColor = effect(gl_Color, _tex0_, gl_TexCoord[0].xy, gl_FragCoord.xy);\n"
+ "}\0";
+
+ void JSLProgram::init(const char* program)
+ {
+ glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &_max_texture_units);
+
+ char* fs = (char*)alloca(strlen(program) + strlen(base_f));
+ sprintf(fs, base_f, program);
+ GLuint fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
+ glShaderSource(fragmentShader, 1, (const GLchar**)&fs, NULL);
+ glCompileShader(fragmentShader);
+
+ pid = glCreateProgram();
+ glAttachShader(pid, fragmentShader);
+ glLinkProgram(pid);
+ }
+
+ shared std::map<std::string, GLint> JSLProgram::_texture_unit_pool;
+ shared GLint JSLProgram::_current_texture_unit = 0;
+ shared GLint JSLProgram::_max_texture_units = 0;
+
+ shared GLint JSLProgram::getTextureUnit(const std::string& name)
+ {
+ std::map<std::string, GLint>::const_iterator it = _texture_unit_pool.find(name);
+
+ if (it != _texture_unit_pool.end())
+ return it->second;
+
+ if (++_current_texture_unit >= _max_texture_units)
+ return 0;
+
+ _texture_unit_pool[name] = _current_texture_unit;
+ return _current_texture_unit;
+ }
+
+ void JSLProgram::use()
+ {
+ glUseProgram(pid);
+ }
+
+ shared void JSLProgram::unuse()
+ {
+ glUseProgram(0);
+ }
+
+ void JSLProgram::sendFloat(const char* variable, float number)
+ {
+ int loc = glGetUniformLocation(pid, variable);
+ glUniform1f(loc, number);
+ }
+
+ void JSLProgram::sendImage(const char* variable, const Image* image)
+ {
+ GLint texture_unit = getTextureUnit(variable);
+
+ GLint location = glGetUniformLocation(pid, variable);
+
+ glActiveTexture(GL_TEXTURE0 + texture_unit);
+ glBindTexture(GL_TEXTURE_2D, image->getTexture()); // guarantee it gets bound
+ glUniform1i(location, texture_unit);
+
+ // reset texture unit
+ glActiveTexture(GL_TEXTURE0);
+ }
+
+}
+}
diff --git a/src/libjin/render/jsl.h b/src/libjin/render/jsl.h
new file mode 100644
index 0000000..570235b
--- /dev/null
+++ b/src/libjin/render/jsl.h
@@ -0,0 +1,44 @@
+#ifndef __JIN_JSL_H
+#define __JIN_JSL_H
+#include <string>
+#include <map>
+#include "image.h"
+#include "3rdparty/GLee/GLee.h"
+namespace jin
+{
+namespace render
+{
+ /**
+ * A JSL program for shadering textures which is
+ * actually a glsl program.
+ */
+ class JSLProgram
+ {
+ public:
+
+ void init(const char* program);
+
+ void use();
+
+ static void unuse();
+
+ void sendFloat(const char* name, float number);
+ void sendImage(const char* name, const Image* image);
+ //void sendMatrix(const char* name, int size, const GLfloat* m, int count);
+ //void sendCanvas(const char* name, const Canvas& canvas);
+
+ private:
+ JSLProgram();
+
+ // only id for identify glsl program
+ GLuint pid;
+
+ static GLint _current_texture_unit;
+ static GLint _max_texture_units;
+ static std::map<std::string, GLint> _texture_unit_pool;
+ static GLint getTextureUnit(const std::string& name);
+ };
+}
+}
+
+#endif
diff --git a/src/libjin/render/quad.h b/src/libjin/render/quad.h
new file mode 100644
index 0000000..3ae4cc4
--- /dev/null
+++ b/src/libjin/render/quad.h
@@ -0,0 +1,17 @@
+#ifndef __JIN_QUAD_H
+#define __JIN_QUAD_H
+
+namespace jin
+{
+namespace render
+{
+
+ struct Quad
+ {
+ float x, y, w, h;
+ };
+
+}
+}
+
+#endif // !__JIN_RENDER_QUAD_H
diff --git a/src/libjin/render/rect.h b/src/libjin/render/rect.h
new file mode 100644
index 0000000..56b5bd1
--- /dev/null
+++ b/src/libjin/render/rect.h
@@ -0,0 +1,12 @@
+#ifndef __JIN_RECT_H
+#define __JIN_RECT_H
+
+namespace jin
+{
+class Rect
+{
+public:
+ int x, y, w, h;
+};
+}// jin
+#endif \ No newline at end of file
diff --git a/src/libjin/render/window.cpp b/src/libjin/render/window.cpp
new file mode 100644
index 0000000..20a6adc
--- /dev/null
+++ b/src/libjin/render/window.cpp
@@ -0,0 +1,83 @@
+#include "window.h"
+#include "3rdparty/GLee/GLee.h"
+#include "canvas.h"
+#include "utils/macros.h"
+namespace jin
+{
+namespace render
+{
+
+ shared Window* Window::g_wnd = 0;
+
+ Window::Window(): wnd(0), ctx(0)
+ {
+ }
+
+ Window::~Window()
+ {
+ }
+
+ void Window::init(int pw, int ph, const char* t)
+ {
+ w = pw;
+ h = ph;
+
+ if (wnd)
+ {
+ SDL_DestroyWindow(wnd);
+ SDL_FlushEvent(SDL_WINDOWEVENT);
+ }
+
+ if (ctx)
+ {
+ SDL_GL_DeleteContext(ctx);
+ }
+
+ SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
+ SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);
+ SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
+ SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
+ SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
+ SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
+
+ Uint32 flags = SDL_WINDOW_SHOWN | SDL_WINDOW_OPENGL ;
+
+ int wx = SDL_WINDOWPOS_UNDEFINED,
+ wy = SDL_WINDOWPOS_UNDEFINED;
+
+ /* Create window */
+ wnd = SDL_CreateWindow(t, wx, wy, w, h, flags);
+
+ // Create an opengl context
+ ctx = SDL_GL_CreateContext(wnd);
+ SDL_GL_MakeCurrent(wnd, ctx);
+
+ // Default clear color
+ glClearColor(0.f, 0.f, 0.f, 1.f);
+ glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
+
+ // Default render color
+ glColor4f(1, 1, 1, 1);
+
+ /**
+ * Set the viewport to top-left corner.
+ * Bind to the default render buffer.
+ */
+ Canvas::unbind();
+
+ // Swap window buffer
+ swapBuffers();
+ }
+
+ SDL_Window* Window::getWnd()
+ {
+ return wnd;
+ }
+
+ SDL_GLContext Window::getCtx()
+ {
+ return ctx;
+ }
+
+}
+} \ No newline at end of file
diff --git a/src/libjin/render/window.h b/src/libjin/render/window.h
new file mode 100644
index 0000000..f29c82d
--- /dev/null
+++ b/src/libjin/render/window.h
@@ -0,0 +1,53 @@
+#ifndef __JIN_RENDER_WINDOW
+#define __JIN_RENDER_WINDOW
+#include "SDL2/SDL.h"
+namespace jin
+{
+namespace render
+{
+ class Window
+ {
+ public:
+
+ void init(int w, int h, const char* t);
+
+ SDL_Window* getWnd();
+
+ SDL_GLContext getCtx();
+
+ static inline Window* get()
+ {
+ return (g_wnd ? g_wnd : (g_wnd = new Window()));
+ }
+
+ inline int Window::getW()
+ {
+ return w;
+ }
+
+ inline int Window::getH()
+ {
+ return h;
+ }
+
+ inline void Window::swapBuffers()
+ {
+ if (wnd)
+ SDL_GL_SwapWindow(wnd);
+ }
+ private:
+
+ Window();
+ ~Window();
+
+ static Window* g_wnd;
+
+ SDL_Window* wnd;
+
+ SDL_GLContext ctx;
+
+ int w, h;
+ };
+}
+}
+#endif \ No newline at end of file
generated by cgit v1.1-26-g67d0 at 2025-05-28 18:38:15 +0000