2014/10/15 下午 10:09:52

iphone Programming Glossary: gl_vertex_array

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 0.5f 0.5f 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..

OpenGL ES iPhone - drawing anti aliased lines

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

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 It looks good in the iPhone simulator but on.. 2 GL_FLOAT 0 points glEnableClientState GL_VERTEX_ARRAY glDrawArrays GL_LINE_STRIP 0 num_points glDisableClientState GL_VERTEX_ARRAY It looks good in the iPhone simulator but on the iPhone the lines get extremely thin and w o any anti aliasing. How do you.. 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 GL_VERTEX_ARRAY glDisableClientState GL_COLOR_ARRAY ..

Draw to offscreen renderbuffer in OpenGL ES (iPhone)

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

GLfloat vc 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.. glEnableClientState GL_VERTEX_ARRAY glVertexPointer 3 GL_FLOAT 0 vc glDrawArrays GL_LINES 0 4 glDisableClientState GL_VERTEX_ARRAY glBindRenderbufferOES GL_RENDERBUFFER_OES offscreenRenderbuffer context presentRenderbuffer GL_RENDERBUFFER_OES Doing it..

Why is this OpenGL ES code slow on iPhone?

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

GL_MODELVIEW 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..

Getting a Maya Model into the iPhone

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

array of floats but is mapped out like above. Once 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.. R G B 1 range 0 1 glDrawArrays GL_TRIANGLES 0 numVertices number of floats in array divided by 6 glDisableClientState GL_VERTEX_ARRAY glDisableClientState GL_NORMAL_ARRAY Then just put this in your OpenGL ES 1.1 render loop. Let me know if this does it for..

Explain how OpenGL ES background images work

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

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 static const GLfloat vertices 1.0 1.0 0.0..

Save OpenGL Drawn item as a Image

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

scale frame.size.height scale glMatrixMode GL_MODELVIEW glDisable GL_DITHER glEnable GL_TEXTURE_2D glEnableClientState GL_VERTEX_ARRAY glEnable GL_BLEND Set a blending function appropriate for premultiplied alpha pixel data glBlendFunc GL_ONE GL_ONE_MINUS_SRC_ALPHA..

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

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 only appearing in the screen the line not showing...