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2014/10/15 ¤U¤È 10:09:39

iphone Programming Glossary: gldrawarrays

How to draw a solid circle with cocos2d for iPhone

http://stackoverflow.com/questions/1081832/how-to-draw-a-solid-circle-with-cocos2d-for-iphone

opengl es cocos2d iphone circle share improve this question In DrawingPrimitives.m change this in drawCricle glDrawArrays GL_LINE_STRIP 0 segs additionalSegment to glDrawArrays GL_TRIANGLE_FAN 0 segs additionalSegment You can read more about.. question In DrawingPrimitives.m change this in drawCricle glDrawArrays GL_LINE_STRIP 0 segs additionalSegment to glDrawArrays GL_TRIANGLE_FAN 0 segs additionalSegment You can read more about opengl primitives here http www.informit.com articles article.aspx..

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

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 presentRenderbuffer GL_RENDERBUFFER_OES and this then I grab image from..

OpenGL ES iPhone - drawing anti aliased lines

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

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 the iPhone.. 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 share improve..

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

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 I take to..

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 glLoadIdentity 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..

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

quad 0 .s glTexEnvi GL_TEXTURE_ENV GL_TEXTURE_ENV_MODE GL_MODULATE glColor4f 1.0 5 1.0 5 1.0 5 1.0 validateTexEnv glDrawArrays GL_TRIANGLE_STRIP 0 4 Pass two accumulate two rotated linear samples glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MIN_FILTER.. GL_REPLACE glTexEnvi GL_TEXTURE_ENV GL_SRC0_ALPHA GL_PRIMARY_COLOR glColor4f 0.5 0.5 0.5 2.0 5 validateTexEnv glDrawArrays GL_TRIANGLE_STRIP 0 4 Pass three accumulate two rotated linear samples for i 0 i 4 i tmpquad i .x quad i .s 0.5 offw tmpquad.. .x quad i .s 0.5 offw tmpquad i .y quad i .t 1.5 offh tmpquad i .s quad 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..

OpenGL ES Simple Undo Last Drawing

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

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 context presentRenderbuffer GL_RENDERBUFFER_OES..

Can example “GLImageProcessing” work with multi filters

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

glTexEnvi GL_TEXTURE_ENV GL_SRC0_ALPHA GL_PREVIOUS glColor4f h h h 0.75 0.5 h 2x extrapolation validateTexEnv glDrawArrays GL_TRIANGLE_STRIP 0 4 save to file snapshot result test3.jpg Restore state glDisable GL_TEXTURE_2D glTexEnvi GL_TEXTURE_ENV..

Drawing app on iPad using OpenGL

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

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 is the midpoint which you need..

Getting a Maya Model into the iPhone

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

sizeof vertices 0 6 vertices 0 glNormalPointer GL_FLOAT sizeof vertices 0 6 vertices 3 glColor4f 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..

Undo drawing in Paint Application

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

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 viewRenderbuffer context presentRenderbuffer..

Overlay Color Blend in OpenGL ES / iOS / Cocos2d

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

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 GL_COLOR_ARRAY glEnableClientState.. 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 GL_COLOR_ARRAY glEnableClientState GL_TEXTURE_COORD_ARRAY glEnable GL_TEXTURE_2D..

Record the drawing as a m4v video file - OpenGL

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

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 viewRenderbuffer context presentRenderbuffer..

Draw a straight line using OpenGL ES in iPhone?

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

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. And also the.. data be scaled 2 4 how many bytes per vertex 2 floats per vertex NULL offset to the first coordinate in this case 0 glDrawArrays GL_LINES 0 2 render Btw I've been going through Learning OpenGL ES for iOS by Erik Buck which you can buy in Rough Cut form..