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Re: Opengl Shader Compiler issues with newer than 13.9 drivers on HD 5850
Hi Graham, Cheers for the help Bud; Shader; float vignette = vec2(1.0) - length(vec2(0.5) - vTexcoord) / length(vec2(0.5)); If need be i can download some old drivers to try to find which was the last...
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OpenGL glLoadMatrixf call order
We're rendering complex scenes and GUIs using hundreds of glLoadMatrixf calls just fine but when rendering just a few simple textured quads for some final overlays the correct order in which...
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Re: infinite loop when compiling glsl compute shader
If you call glGetUniformLocation on a compute shader the call hangs.on 13.12
View ArticlePossible driver bug with glCopyImageSubdata
Tested with Catalyst 13.12 on a HD 6850. When using glCopyImageSubdata with both the source and destination having a compressed internal format ( NOTE: The source and destination texture were different...
View ArticleRe: OpenGL: multi-thread object creation slow/unstable performance
I'm going to go out on a limb and blame the OpenGL specification. Its not fair sometimes to compare OpenGL and Direct3D in certain regards, because D3D implementation have strict requirements and less...
View ArticleOpenGL headers and libraries for ATI GPUs
Hi, My question is about the OpenGL C++ API for the ATI GPU. I have a sapphire R9 270X graphics card running on windows and I love graphics programming. I looked all over the Installation disk shipped...
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Re: OpenGL headers and libraries for ATI GPUs
OpenGL is a library a bit special. Most of the features are provided first through "extensions", and then the extensions are integrated in the core version of OpenGL.On Windows, Microsoft provides an...
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Re: Possible driver bug with glCopyImageSubdata
Just an update to what I've mentioned before. Even though glCopyImageSubDataNV doesn't generate a GL error, the behavior doesn't seem to be correct. The destination texture is showing corruption due to...
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Re: glTexSubImage2D crash with RGB texture in 13.12 drivers (regress from...
Still broken in 14.2 beta driver.
View ArticleGLSL textureOffset using sampler2DArrayShadow compilation error
Greetings - Debugging an issue here with one of the shaders which works fine on other hardware, but fails to compile on my Radeon 7950. Using Catalyst 14.1 Beta driver here (since I wanted to try out...
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AMD buffer binding bug?
Hi. I've been working on a project and I am stuck with some strange behavior. I have some shaders that generate a fragment list and store it inside a SSBO: struct FragmentData { GLuint...
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GLSL vertex shader compile sometimes fails
I've been getting intermittent errors compiling a vertex shader, preparing for the first render of a newly created OpenGL context. It's the same vertex shader that usually works, on the same hardware....
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Cool Screensavers I did
Here are Morphius screen savers both wireframe and solid, done in OpenGL and FreeBasic for Windows They are both 32 bit so you put them in your C:\windows\SysWOW64 folder and they will show up when...
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glPushDebugGroup() broken in 13.12 WHQL drivers
6.14.10.12618 (13.12 WHQL) drivers, doing glPushDebugGroup() causes GL_INVALID_OPERATION.Using a 6870 card for testing. From: http://www.opengl.org/registry/specs/KHR/debug.txt Trying: // Setup of the...
View ArticleRe: AMD buffer binding bug?
just a little update on tests I have been doing. So I tested this on a Nvidia GPU and it had the same problem. With some help, I found it was because I was missing a VAO, even though I am using...
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Bug with glReadPixels
Hello,This is a bug report.glReadPixels in the AMD's OpenGL driver checks if the GL_DRAW_FRAMEBUFFER is complete and if it is not, generates GL_INVALID_FRAMEBUFFER_OPERATION.This is incorrect behavior...
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Re: glBlitFramebuffer performance warnings
I think I ran into this same issue. I have an FBO with one render buffer attached to GL_COLOR_ATTACHMENT0 and one render buffer attached to GL_DEPTH_ATTACHMENT. The format for the color render buffer...
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Offline Shader Compiler for AMD e4690 GPU
Dear All,I am developing OpenGL ES 2.0 based application on AMD Radeon e4690 GPU.The target being an embedded hardware, run-time compilation for shaders using GLSL is not recommended.Can anybody point...
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