absriram324's articles:

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Feedback from framebuffer 3 91 (12/11/2004 3:30:34 AM) comp.graphics.api.opengl I have an application that renders a yellow primitive (a point or a line) if a particular condition is met, otherwise the screen will be black (just the background color). Is there a way to get a numerical out... Sriram

Render-To-Texture using pBuffers 2 136 (11/21/2004 6:22:52 AM) comp.graphics.api.opengl Hi All, I want to do Render-to-Texture using pbuffers. I tried the following without using pbuffers and if works fine. I draw a red quad bigger than the size of my screen and copy the framebuffer values to a... Sriram

Transparent Textures 2 136 (11/14/2004 5:52:58 AM) comp.graphics.api.opengl Hi, I created a chessboard texture (black and white) and mapped it on to a triangle. The resulting texture I get is blended with the color of the triangle. For example I map the texture onto a Green Triangle... Sriram

Error Creating pbuffer 6 252 (11/9/2004 6:13:42 AM) comp.graphics.api.opengl Hi All, I am trying to use pbuffers. I went through ati's tutorial (http://www.ati.com/developer/ATIpbuffer.pdf) on using pbuffers and used their sample code. I am having problems creating the pbuffer. hPBuf... Sriram

GL_DEPTH and GL_BLEND 5 143 (11/9/2004 5:06:02 AM) comp.graphics.api.opengl Hi All, Please check this piece of code: glColor3f(1.0,0.0,0.0); //Red Triangle glBegin(GL_TRIANGLES); glVertex3f(-5.0,3.0,1.0); glVertex3f(5.0,3.0,1.0); glVertex3f(0.0,10.0,1.0); glEnd(); glColor3f(0.0,1.0,... Sriram

pbuffer Rendering 8 125 (11/7/2004 8:18:30 PM) comp.graphics.api.opengl Hello All, Can someone tell me how to render to pbuffers and how to access pbuffer values inside a fragement shader. Also I need to know how to pass texture objects (sampler2D objects) to fragment shaders. I... Sriram

pbuffer Usage 2 118 (11/4/2004 7:35:28 AM) comp.graphics.api.opengl Hello everyone, I have a situation where I have a scene that has to be rendered, and simultaneously do some processes in the GPU. I am using Cg vertex and pixel shaders for this. I believe I will have to use ... Sriram

Fragment Shaders in Cg 5 152 (11/3/2004 12:26:31 AM) comp.graphics.api.opengl Hello Everyone, I am trying to some pixel based operations. I want to use Cg's Fragment shaders for this. I have a basic doubt regarding fragment shader usage. I know that the output of a fragment program w... Sriram

Writing Textures 2 102 (11/1/2004 7:07:47 AM) comp.graphics.api.opengl Hello Everyone, I want to copy the contents of the framebuffer into a texture and have it as an array of values and also save it as some sort of image file. I know that I have to use the glCopyTexImage2D funct... Sriram

Blending in OpenGL #2 3 146 (10/17/2004 12:19:57 AM) comp.graphics.api.opengl Hello everyone, I am trying to use blending in OpenGL. I tried out a simple program, but it doesn't work. I render a quad at z = -4.0f(Green) and another quad at z = -2.0f(Red) and the two quads do not inter... Sriram