*去掉文件前缀je_

1 files changed, 58 insertions, 0 deletions

diff --git a/src/libjin/graphics/canvas.cpp b/src/libjin/graphics/canvas.cpp
new file mode 100644
index 0000000..db02110
--- /dev/null
+++ b/src/libjin/graphics/canvas.cpp
@@ -0,0 +1,58 @@
+#include "../core/configuration.h"
+#if defined(jin_graphics)
+
+#include "../utils/macros.h"
+#include "canvas.h" 
+#include "window.h"
+
+namespace JinEngine
+{
+    namespace Graphics
+    {
+
+        Canvas::Canvas(GLuint n)
+            : fbo(n)
+        {
+            ++gl.getStats().canvases;
+        }
+
+        Canvas::Canvas(int w, int h) 
+            : Graphic(w, h)
+        {
+            GLint current_fbo;
+            glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &current_fbo);
+
+            // Generate a new render buffer object.
+            fbo = gl.genFrameBuffer();
+            gl.bindFrameBuffer(fbo);
+
+            // Render texture.
+            GLuint texture = getGLTexture();
+            gl.bindTexture2D(texture);
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+            gl.texImage(GL_RGBA8, w, h, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+            
+            glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
+            GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+
+            // Unbind framebuffer
+            gl.bindFrameBuffer(current_fbo);
+
+            ++gl.getStats().canvases;
+        }
+
+        Canvas::~Canvas()
+        {
+            --gl.getStats().canvases;
+        }
+
+        bool Canvas::isBinded(const Canvas* cvs)
+        {
+            return gl.getCanvas() == cvs;
+        }
+
+    } // namespace Graphics
+} // namespace JinEngine
+
+#endif // defined(jin_graphics)
\ No newline at end of file