2014/10/15 下午 10:09:42

iphone Programming Glossary: glvertexpointer

Drawing into OpenGL ES framebuffer and getting UIImage from it on iPhone

http://stackoverflow.com/questions/10936157/drawing-into-opengl-es-framebuffer-and-getting-uiimage-from-it-on-iphone

0.5f glBindRenderbufferOES GL_RENDERBUFFER_OES colorRenderbuffer should I do this glEnableClientState GL_VERTEX_ARRAY glVertexPointer 2 GL_FLOAT 0 line glColor4f 1.0 0.0 0.0 1.0 glLineWidth 10 glDrawArrays GL_LINES 0 2 draw line with two points myContext..

What does the Tiler Utilization statistic mean in the iPhone OpenGL ES instrument?

http://stackoverflow.com/questions/1287811/what-does-the-tiler-utilization-statistic-mean-in-the-iphone-opengl-es-instrumen

of the MBX platform also make it such that you want to actually include the W component of the position in the call to glVertexPointer in this case. You might also consider pursuing alternate lighting methods like DOT3 for your polygon data particularly the..

OpenGL ES iPhone - drawing anti aliased lines

http://stackoverflow.com/questions/1813035/opengl-es-iphone-drawing-anti-aliased-lines

like glBlendFunc GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA glEnable GL_BLEND glEnable GL_LINE_SMOOTH glLineWidth 2.0f glVertexPointer 2 GL_FLOAT 0 points glEnableClientState GL_VERTEX_ARRAY glDrawArrays GL_LINE_STRIP 0 num_points glDisableClientState GL_VERTEX_ARRAY.. 4 GL_UNSIGNED_BYTE 0 colors glEnableClientState GL_COLOR_ARRAY points is a pointer to floats 2 per vertex glVertexPointer 2 GL_FLOAT 0 points glEnableClientState GL_VERTEX_ARRAY glDrawArrays GL_TRIANGLE_STRIP 0 points_count glDisableClientState..

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

goes something like this 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..

Draw to offscreen renderbuffer in OpenGL ES (iPhone)

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

0.0f 0.0f 0.0f 10.0f 10.0f 10.0f 0.0f 0.0f 0.0f 10.0f 10.0f 10.0f glLoadIdentity glEnableClientState GL_VERTEX_ARRAY glVertexPointer 3 GL_FLOAT 0 vc glDrawArrays GL_LINES 0 4 glDisableClientState GL_VERTEX_ARRAY glBindRenderbufferOES GL_RENDERBUFFER_OES.. allbrushes glViewport 0 0 512 512 reset pointers 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..

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

to sample 17 texels . .. . X rotated samples 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..

OpenGL ES Simple Undo Last Drawing

http://stackoverflow.com/questions/2708055/opengl-es-simple-undo-last-drawing

context glBindFramebufferOES GL_FRAMEBUFFER_OES viewFramebuffer I then prepare the vertex array and draw this way glVertexPointer 2 GL_FLOAT 0 vertexBuffer glDrawArrays GL_POINTS 0 vertexCount glBindRenderbufferOES GL_RENDERBUFFER_OES viewRenderbuffer..

OpenGL ES; rendering texture created from CGBitmapContext

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

0.0f 0.0f 0.0f 50.0f 0.0f 0.0f 0.0f 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..

Can example “GLImageProcessing” work with multi filters

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

result.s result.high result.t glClear GL_COLOR_BUFFER_BIT 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.. 0..0.5 it can be biased up and the addition done in signed 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..

Drawing app on iPad using OpenGL

http://stackoverflow.com/questions/4606680/drawing-app-on-ipad-using-opengl

CGPointMake x y t 1.0 segments windowHeight is the height of you drawing canvas. midPoint CGPointMake x windowHeight y glVertexPointer 2 GL_FLOAT 0 vertices glDrawArrays GL_POINTS 0 segments 2 return midPoint That will draw based on three points. The control..

Getting a Maya Model into the iPhone

http://stackoverflow.com/questions/4675475/getting-a-maya-model-into-the-iphone

you have a float array it's simple to render. glEnableClientState GL_VERTEX_ARRAY glEnableClientState GL_NORMAL_ARRAY glVertexPointer 3 GL_FLOAT sizeof vertices 0 6 vertices 0 glNormalPointer GL_FLOAT sizeof vertices 0 6 vertices 3 glColor4f R G B 1 range..

Explain how OpenGL ES background images work

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

0.0 static const GLfloat normals 0.0 0.0 1.0 0.0 0.0 1.0 0.0 0.0 1.0 0.0 0.0 1.0 glBindTexture GL_TEXTURE_2D texture 0 glVertexPointer 3 GL_FLOAT 0 vertices glNormalPointer GL_FLOAT 0 normals glTexCoordPointer 2 GL_FLOAT 0 texCoords glDrawArrays GL_TRIANGLE_STRIP..

Undo drawing in Paint Application

http://stackoverflow.com/questions/6689600/undo-drawing-in-paint-application

glTexEnvf GL_POINT_SPRITE_OES GL_COORD_REPLACE_OES GL_TRUE glPointSize 64 mbrushscale Render the vertex array glVertexPointer 2 GL_FLOAT 0 eraseBuffer glDrawArrays GL_POINTS 0 vertexCount Display the buffer glBindRenderbufferOES GL_RENDERBUFFER_OES..

Overlay Color Blend in OpenGL ES / iOS / Cocos2d

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

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 else glDrawArrays GL_LINE_STRIP 0 points glEnableClientState..

Save OpenGL Drawn item as a Image

http://stackoverflow.com/questions/9660723/save-opengl-drawn-item-as-a-image

vertexBuffer 2 vertexCount 1 start.y end.y start.y GLfloat i GLfloat count vertexCount 1 Render the vertex array glVertexPointer 2 GL_FLOAT 0 vertexBuffer glDrawArrays GL_POINTS 0 vertexCount Display the buffer glBindRenderbufferOES GL_RENDERBUFFER_OES..

Record the drawing as a m4v video file - OpenGL

http://stackoverflow.com/questions/9661259/record-the-drawing-as-a-m4v-video-file-opengl

Draw a straight line using OpenGL ES in iPhone?

http://stackoverflow.com/questions/9736887/draw-a-straight-line-using-opengl-es-in-iphone

0.65f 1.0f glClear GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT const GLfloat line 0.5f 0.5f point A 0.5f 0.5f point B glVertexPointer 2 GL_FLOAT 0 line glEnableClientState GL_VERTEX_ARRAY glDrawArrays GL_LINES 0 2 When i run the project only the gray color..