2014/10/15 下午 10:09:38

iphone Programming Glossary: glclear

How to draw a line inside the fish movement (OpenGLES in iPhone)?

http://stackoverflow.com/questions/10499077/how-to-draw-a-line-inside-the-fish-movement-opengles-in-iphone

NSMutableArray array self.children addObject self.player void glkView GLKView view drawInRect CGRect rect glClearColor 1 1 1 1 glClear GL_COLOR_BUFFER_BIT glBlendFunc GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA glEnable GL_BLEND Condition satisfied.. array self.children addObject self.player void glkView GLKView view drawInRect CGRect rect glClearColor 1 1 1 1 glClear GL_COLOR_BUFFER_BIT glBlendFunc GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA glEnable GL_BLEND Condition satisfied to draw a line.. minVelocity target.moveVelocity GLKVector2Make actualVelocity 0 void glkView GLKView view drawInRect CGRect rect glClearColor 1 1 1 1 glClear GL_COLOR_BUFFER_BIT glBlendFunc GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA glEnable GL_BLEND Condition satisfied..

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

int width 256 int height 256 EAGLContext setCurrentContext myContext glEnable GL_DEPTH_TEST clear color cyan glClearColor 0.0f 1.0f 1.0f 1.0f glClear GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT trying to draw some primitive red line float line.. 256 EAGLContext setCurrentContext myContext glEnable GL_DEPTH_TEST clear color cyan glClearColor 0.0f 1.0f 1.0f 1.0f glClear GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT trying to draw some primitive red line float line 0.5f 0.5f 0.5f 0.5f glBindRenderbufferOES..

How do I blend two textures with different co-ordinates in OpenGL ES 2.0 on iPhone?

http://stackoverflow.com/questions/12242443/how-do-i-blend-two-textures-with-different-co-ordinates-in-opengl-es-2-0-on-ipho

position 2 GL_FLOAT 0 0 imageVertices glVertexAttribPointer inputTextureCoordinate 2 GL_FLOAT 0 0 textureCoordinates glClearColor 0.0 0.0 0.0 0.0 glClear GL_COLOR_BUFFER_BIT glDrawArrays GL_TRIANGLE_STRIP 0 4 glBindRenderbuffer GL_RENDERBUFFER viewRenderbuffer.. glVertexAttribPointer inputTextureCoordinate 2 GL_FLOAT 0 0 textureCoordinates glClearColor 0.0 0.0 0.0 0.0 glClear GL_COLOR_BUFFER_BIT glDrawArrays GL_TRIANGLE_STRIP 0 4 glBindRenderbuffer GL_RENDERBUFFER viewRenderbuffer context presentRenderbuffer..

Draw to offscreen renderbuffer in OpenGL ES (iPhone)

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

GL_TEXTURE_2D GL_TEXTURE_MIN_FILTER GL_LINEAR glTexParameterf GL_TEXTURE_2D GL_TEXTURE_MAG_FILTER GL_LINEAR glClearColor 1.0 1.0 1.0 1.0 glViewport 0 0 512 512 glClear GL_COLOR_BUFFER_BIT setTargetToTexture function glBindFramebufferOES.. glTexParameterf GL_TEXTURE_2D GL_TEXTURE_MAG_FILTER GL_LINEAR glClearColor 1.0 1.0 1.0 1.0 glViewport 0 0 512 512 glClear GL_COLOR_BUFFER_BIT setTargetToTexture function glBindFramebufferOES GL_FRAMEBUFFER_OES tbuffer glBindTexture GL_TEXTURE_2D..

Can example “GLImageProcessing” work with multi filters

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

result fbo glBindFramebufferOES GL_FRAMEBUFFER_OES resultFBO glViewport 0 0 result.wide 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..

Displaying an EAGLView with transparent background on a UIImageView

http://stackoverflow.com/questions/5283670/displaying-an-eaglview-with-transparent-background-on-a-uiimageview

var for GL views at initWithCoder Plus of course in your OpenGL code you need to clear to alpha 0.0. So wherever your glClear glClearColor calls are already replace the clearColor with glClearColor 0 0 0 0.0 glClear GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT.. GL views at initWithCoder Plus of course in your OpenGL code you need to clear to alpha 0.0. So wherever your glClear glClearColor calls are already replace the clearColor with glClearColor 0 0 0 0.0 glClear GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT..

How can I crop an Image with mask and combine it with another image (background) on iPhone? (OpenGL ES 1.1 is preferred)

http://stackoverflow.com/questions/5299452/how-can-i-crop-an-image-with-mask-and-combine-it-with-another-image-background

y size glEnd void init GLdouble bounds 4 glGetDoublev GL_VIEWPORT bounds window_size 0 bounds 2 window_size 1 bounds 3 glClearColor 0.0 0.0 0.0 1.0 glShadeModel GL_SMOOTH Load our textures... color_texture NSImage imageNamed @ colors texture mask_texture.. texture Enable alpha blending. We'll learn more about this later glEnable GL_BLEND glEnable GL_TEXTURE_2D void draw glClear GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT glColor3f 1.0 1.0 1.0 renderMask renderTextures void reshape int width int height..

Use of VAO around VBO in Open ES iPhone app Causes EXC_BAD_ACCESS When Call to glDrawElements

http://stackoverflow.com/questions/6240863/use-of-vao-around-vbo-in-open-es-iphone-app-causes-exc-bad-access-when-call-to-g

ubbthreads.php ubb showflat Number 287977 and then use it like this void render CADisplayLink displayLink glClearColor 0 104.0 255.0 55.0 255.0 1.0 glClear GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT glViewport 0 0 backingWidth backingHeight.. 287977 and then use it like this void render CADisplayLink displayLink glClearColor 0 104.0 255.0 55.0 255.0 1.0 glClear GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT glViewport 0 0 backingWidth backingHeight directProgram use glBindVertexArrayOES..

OpenGL ES: Undo in a Pixel Painting App

http://stackoverflow.com/questions/6281789/opengl-es-undo-in-a-pixel-painting-app

data save every draw point to a array if undo clear old buffer glBindFramebufferOES GL_FRAMEBUFFER_OES viewFramebuffer glClearColor 0.0 0.0 0.0 0.0 glClear GL_COLOR_BUFFER_BIT remove point from array for int i 0 i 50 i self.vertexBuffers removeLastObject.. a array if undo clear old buffer glBindFramebufferOES GL_FRAMEBUFFER_OES viewFramebuffer glClearColor 0.0 0.0 0.0 0.0 glClear GL_COLOR_BUFFER_BIT remove point from array for int i 0 i 50 i self.vertexBuffers removeLastObject render for NSData point..

iOS CVImageBuffer distorted from AVCaptureSessionDataOutput with AVCaptureSessionPresetPhoto

http://stackoverflow.com/questions/6540710/ios-cvimagebuffer-distorted-from-avcapturesessiondataoutput-with-avcapturesessio

cameraFrame 0 int bufferHeight CVPixelBufferGetHeight cameraFrame int bufferWidth CVPixelBufferGetWidth cameraFrame glClear GL_COLOR_BUFFER_BIT glGenTextures 1 videoFrameTexture_ glBindTexture GL_TEXTURE_2D videoFrameTexture_ glTexParameteri GL_TEXTURE_2D..

Capturing EAGLview content WITH alpha channel on iPhone

http://stackoverflow.com/questions/962390/capturing-eaglview-content-with-alpha-channel-on-iphone

transparency when you're drawing your scene does your scene have a transparent background make sure you're doing a glClear to something like 0 0 0 0 rather than 0 0 0 1 . when you're drawing the image to flip it over what is the default background..

Save OpenGL Drawn item as a Image

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

erase EAGLContext setCurrentContext context Clear the buffer glBindFramebufferOES GL_FRAMEBUFFER_OES viewFramebuffer glClearColor 0.0 0.0 0.0 0.0 glClear GL_COLOR_BUFFER_BIT Display the buffer glBindRenderbufferOES GL_RENDERBUFFER_OES viewRenderbuffer.. context Clear the buffer glBindFramebufferOES GL_FRAMEBUFFER_OES viewFramebuffer glClearColor 0.0 0.0 0.0 0.0 glClear GL_COLOR_BUFFER_BIT Display the buffer glBindRenderbufferOES GL_RENDERBUFFER_OES viewRenderbuffer context presentRenderbuffer..

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

rect NSLog @ DrawInRect Method EAGLContext setCurrentContext self.context This method is calling multiple times.... glClearColor 0.65f 0.65f 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.. setCurrentContext self.context This method is calling multiple times.... glClearColor 0.65f 0.65f 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.. to the GPU to be processed. Here's my glkView drawInRect function void glkView GLKView view drawInRect CGRect rect glClearColor 0.65f 0.65f 0.65f 1.0f glClear GL_COLOR_BUFFER_BIT GL_DEPTH_BUFFER_BIT Prepare the effect for rendering self.effect..