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Mango0x45 · Aug 19, 2014 · a35f5b9 · a35f5b9
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diff --git a/html/examples/fbo_blit.htm b/html/examples/fbo_blit.htm
@@ -0,0 +1,4 @@
+{%glBindFramebuffer}(GL_READ_FRAMEBUFFER, source_fbo);
+{%glBindFramebuffer}(GL_DRAW_FRAMEBUFFER, destination_fbo);
+
+{%glBlitFramebuffer}(0, 0, source_fbo_width, source_fbo_height, 0, 0, destination_fbo_width, destination_fbo_height, GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT, GL_NEAREST);
diff --git a/html/examples/texture_create.htm b/html/examples/texture_create.htm
@@ -0,0 +1,16 @@
+GLuint texture_id;
+{%glGenTextures}(1, &texture_id);
+{%glBindTexture}(GL_TEXTURE_2D, texture_id);
+
+{%glTexParameteri}(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+{%glTexParameteri}(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+
+{%glTexParameteri}(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+{%glTexParameteri}(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+// texture_data is the source data of your texture, in this case
+// its size is sizeof(unsigned char) * texture_width * texture_height * 4
+{%glTexImage2D}(GL_TEXTURE_2D, 0, GL_RGBA, texture_width, texture_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, texture_data);
+{%glGenerateMipmap}(GL_TEXTURE_2D); // Unavailable in OpenGL 2.1, use gluBuild2DMipmaps() insteads.
+
+{%glBindTexture}(GL_TEXTURE_2D, 0);
diff --git a/html/examples/texture_read.htm b/html/examples/texture_read.htm
@@ -0,0 +1,5 @@
+{%glBindTexture}(GL_TEXTURE_2D, texture_id); // texture_id was given by {%glGenTextures}
+
+// texture_data must be large enough to hold the entire texture, in this case
+// sizeof(float) * width * height * 3
+{%glGetTexImage}(GL_TEXTURE_2D, 0, GL_RGB, GL_FLOAT, texture_data);
diff --git a/opengl.py b/opengl.py
@@ -53,6 +53,19 @@
     'description': 'Create a framebuffer object with a renderbuffer-based color attachment and a renderbuffer-based depth attachment.',
     'commands': [ 'glGenRenderbuffers', 'glBindRenderbuffer', 'glRenderbufferStorage', 'glGenFramebuffers', 'glFramebufferRenderbuffer' ],
   },
+  'fbo_blit': {
+    'versions': [ 'gl3', 'gl4', 'es3' ],
+    'description': 'Create a framebuffer object with a renderbuffer-based color attachment and a renderbuffer-based depth attachment.',
+    'commands': [ 'glBindFramebuffer', 'glBlitFramebuffer' ],
+  },
+  'texture_create': {
+    'description': 'Create a texture object with linear mipmaps and edge clamping.',
+    'commands': [ 'glGenTextures', 'glBindTexture', 'glTexParameteri', 'glTexImage2D', 'glGenerateMipmap' ],
+  },
+  'texture_read': {
+    'description': 'Read the texture from GPU memory into a buffer.',
+    'commands': [ 'glGetTexImage' ],
+  },
 }
 
 def get_major_versions(all_versions):