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2014/10/15 ¤U¤È 10:09:40

iphone Programming Glossary: gltexcoordpointer

Applying brightness and contrast with OpenGL ES

http://stackoverflow.com/questions/1506299/applying-brightness-and-contrast-with-opengl-es

for contrast in the sample from apple glActiveTexture GL_TEXTURE0 glVertexPointer 2 GL_FLOAT sizeof V2fT2f quad 0 .x glTexCoordPointer 2 GL_FLOAT sizeof V2fT2f quad 0 .s glTexEnvi GL_TEXTURE_ENV GL_TEXTURE_ENV_MODE GL_COMBINE glTexEnvi GL_TEXTURE_ENV GL_COMBINE_RGB..

OpenGL ES render to texture, then draw texture

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

glDisable GL_TEXTURE_2D self swapBuffers I can flip the image rightside up easily enough by reordering the glTexCoordPointer coordinates accordingly in Texture2D's drawInRect method but that doesn't solve the inside out issue. I tried replacing..

Advice on speeding up OpenGL ES 1.1 on the iPhone

http://stackoverflow.com/questions/1844765/advice-on-speeding-up-opengl-es-1-1-on-the-iphone

Repeat 35 times glPushMatrix glLoadIdentity glTranslate Repeat 7 times glBindTexture glVertexPointer glNormalPointer glTexCoordPointer glDrawArrays GL_TRIANGLES ... glPopMatrix My Vertex Normal and Texture Coords are already interleaved. So what steps should..

Draw to offscreen renderbuffer in OpenGL ES (iPhone)

http://stackoverflow.com/questions/1853551/draw-to-offscreen-renderbuffer-in-opengl-es-iphone

after finishing drawing to textures glViewport 0 0 BWIDTH BHEIGHT glVertexPointer 2 GL_FLOAT 0 canvas canvas vertices glTexCoordPointer 2 GL_FLOAT 0 texels glBindTexture GL_TEXTURE_2D boundtexture bind to the texture which is the special render target glBindFramebufferOES..

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

filter across texel corners . .. . Pass one center nearest sample glVertexPointer 2 GL_FLOAT sizeof V2fT2f quad 0 .x glTexCoordPointer 2 GL_FLOAT sizeof V2fT2f quad 0 .s glTexEnvi GL_TEXTURE_ENV GL_TEXTURE_ENV_MODE GL_MODULATE glColor4f 1.0 5 1.0 5 1.0 5.. .x quad i .s 1.5 offw tmpquad i .y quad i .t 0.5 offh tmpquad i .s quad i .s 1.5 offw tmpquad i .t quad i .t 0.5 offh glTexCoordPointer 2 GL_FLOAT sizeof V2fT2f tmpquad 0 .x glTexEnvi GL_TEXTURE_ENV GL_TEXTURE_ENV_MODE GL_REPLACE glActiveTexture GL_TEXTURE1.. GL_TEXTURE_ENV_MODE GL_REPLACE glActiveTexture GL_TEXTURE1 glEnable GL_TEXTURE_2D glClientActiveTexture GL_TEXTURE1 glTexCoordPointer 2 GL_FLOAT sizeof V2fT2f tmpquad 0 .s glEnableClientState GL_TEXTURE_COORD_ARRAY glBindTexture GL_TEXTURE_2D tex glTexEnvi..

OpenGL ES; rendering texture created from CGBitmapContext

http://stackoverflow.com/questions/2713890/opengl-es-rendering-texture-created-from-cgbitmapcontext

50.0f 0.0f 50.0f 50.0f 0.0f float texCords 0.0f 0.0f 1.0f 0.0f 0.0f 1.0f 1.0f 1.0f glVertexPointer 3 GL_FLOAT 0 verts glTexCoordPointer 2 GL_FLOAT 0 texCords glDrawArrays GL_TRIANGLE_STRIP 0 4 glDisable GL_TEXTURE_2D The result is a white square. Not the green..

optimizing iPhone OpenGL ES fill rate

http://stackoverflow.com/questions/2785640/optimizing-iphone-opengl-es-fill-rate

40 vertices each. The rest of the calls are usually just 2 vertices one image . I'm just using glVertexPointer and glTexCoordPointer. iphone performance optimization opengl es rendering share improve this question Given that the Renderer Utilization..

OpenGL: How to implement an “eraser” tool?

http://stackoverflow.com/questions/292071/opengl-how-to-implement-an-eraser-tool

glDrawArrays to render them. For example glBindTexture GL_TEXTURE_2D circleBrush glVertexPointer 3 GL_FLOAT 0 verts glTexCoordPointer 2 GL_FLOAT 0 coords glDrawArrays GL_TRIANGLE_STRIP 0 4 EDIT 2 Unfortunately stencil buffers are not available on the iPhone...

Can example “GLImageProcessing” work with multi filters

http://stackoverflow.com/questions/4375479/can-example-glimageprocessing-work-with-multi-filters

glDisable GL_BLEND process 1 adjust brightness float t 1.2 glVertexPointer 2 GL_FLOAT sizeof V2fT2f flipquad 0 .x glTexCoordPointer 2 GL_FLOAT sizeof V2fT2f flipquad 0 .s glTexEnvi GL_TEXTURE_ENV GL_TEXTURE_ENV_MODE GL_COMBINE static GLfloat constColor.. space. glActiveTexture GL_TEXTURE1 glEnable GL_TEXTURE_2D glVertexPointer 2 GL_FLOAT sizeof V2fT2f flipquad 0 .x glTexCoordPointer 2 GL_FLOAT sizeof V2fT2f flipquad 0 .s glTexEnvi GL_TEXTURE_ENV GL_TEXTURE_ENV_MODE GL_COMBINE 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

glClearColor 0.3f 0.0f 0.0f 1.0f glVertexPointer 2 GL_FLOAT 0 spriteVertices glEnableClientState GL_VERTEX_ARRAY glTexCoordPointer 2 GL_SHORT 0 spriteTexcoords glEnableClientState GL_TEXTURE_COORD_ARRAY sprite data is preloaded. 512x512 rgba8888 glGenTextures..

Explain how OpenGL ES background images work

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

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 GL_TEXTURE_COORD_ARRAY..

Specifying HTTP referer in embedded UIWebView

http://stackoverflow.com/questions/7913305/specifying-http-referer-in-embedded-uiwebview