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2014/10/15 ¤U¤È 10:09:50

iphone Programming Glossary: gl_texture_coord_array

OpenGL ES render to texture, then draw texture

http://stackoverflow.com/questions/1649222/opengl-es-render-to-texture-then-draw-texture

glBindFramebufferOES GL_FRAMEBUFFER_OES oldFBO glClear GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT glEnableClientState GL_TEXTURE_COORD_ARRAY glEnable GL_TEXTURE_2D glColor4f 1 1 1 1 texture drawInRect CGRectMake 0 0 320 480 glDisableClientState GL_TEXTURE_COORD_ARRAY.. glEnable GL_TEXTURE_2D glColor4f 1 1 1 1 texture drawInRect CGRectMake 0 0 320 480 glDisableClientState GL_TEXTURE_COORD_ARRAY glDisable GL_TEXTURE_2D self swapBuffers I can flip the image rightside up easily enough by reordering the glTexCoordPointer..

How do I create blurred text in an iPhone view?

http://stackoverflow.com/questions/227305/how-do-i-create-blurred-text-in-an-iphone-view

glClientActiveTexture GL_TEXTURE1 glTexCoordPointer 2 GL_FLOAT sizeof V2fT2f tmpquad 0 .s glEnableClientState GL_TEXTURE_COORD_ARRAY glBindTexture GL_TEXTURE_2D tex glTexEnvi GL_TEXTURE_ENV GL_TEXTURE_ENV_MODE GL_COMBINE glTexEnvi GL_TEXTURE_ENV GL_COMBINE_RGB.. i .s 0.5 offw tmpquad i .t quad i .t 1.5 offh glDrawArrays GL_TRIANGLE_STRIP 0 4 Restore state glDisableClientState GL_TEXTURE_COORD_ARRAY glClientActiveTexture GL_TEXTURE0 glBindTexture GL_TEXTURE_2D Half.texID glDisable GL_TEXTURE_2D glTexEnvi GL_TEXTURE_ENV..

Why is this OpenGL ES code slow on iPhone?

http://stackoverflow.com/questions/450042/why-is-this-opengl-es-code-slow-on-iphone

spriteVertices glEnableClientState GL_VERTEX_ARRAY glTexCoordPointer 2 GL_SHORT 0 spriteTexcoords glEnableClientState GL_TEXTURE_COORD_ARRAY sprite data is preloaded. 512x512 rgba8888 glGenTextures 1 spriteTexture glBindTexture GL_TEXTURE_2D spriteTexture glTexImage2D..

Explain how OpenGL ES background images work

http://stackoverflow.com/questions/4820372/explain-how-opengl-es-background-images-work

free imageData image release static const GLfloat texCoords 0.0 1.0 1.0 1.0 0.0 0.0 1.0 0.0 glEnableClientState GL_TEXTURE_COORD_ARRAY glTexCoordPointer 2 GL_FLOAT 0 texCoords glEnableClientState GL_VERTEX_ARRAY glEnableClientState GL_NORMAL_ARRAY glEnableClientState.. 2 GL_FLOAT 0 texCoords glEnableClientState GL_VERTEX_ARRAY glEnableClientState GL_NORMAL_ARRAY glEnableClientState GL_TEXTURE_COORD_ARRAY static const GLfloat vertices 1.0 1.0 0.0 1.0 1.0 0.0 1.0 1.0 0.0 1.0 1.0 0.0 static const GLfloat normals 0.0 0.0 1.0 0.0..

Overlay Color Blend in OpenGL ES / iOS / Cocos2d

http://stackoverflow.com/questions/8771413/overlay-color-blend-in-opengl-es-ios-cocos2d

CGPoint poli points int points closePolygon BOOL closePolygon glDisable GL_TEXTURE_2D glDisableClientState GL_TEXTURE_COORD_ARRAY glDisableClientState GL_COLOR_ARRAY glVertexPointer 2 GL_FLOAT 0 poli if closePolygon glDrawArrays GL_TRIANGLE_FAN 0 points.. 0 points else glDrawArrays GL_LINE_STRIP 0 points glEnableClientState GL_COLOR_ARRAY glEnableClientState GL_TEXTURE_COORD_ARRAY glEnable GL_TEXTURE_2D And here some results As you can see is a good approximation but this two images has error OpenGL..