#OPENGL 4.3 UPGRADE DRIVERS#
#OPENGL 4.3 UPGRADE UPDATE#

Ivec2 pos = ivec2(int(gl_FragCoord.x + 0.5), int(gl_FragCoord.y + 0.5)) Ivec2 res = ivec2(int(iResolution.x + 0.5), int(iResolution.y + 0.5)) Layout(binding = 2, rgba32f) coherent uniform imageBuffer colorMap The Shader program is a simple pass-through vertex shader and the fragment shader that's doing the testing.ДЇragment shader (I guess coherent & memoryBarrier() isn't really needed here since I do them on CPU in between draw/fragment shader execution. I just put some memory barriers around to be extra sure, shouldn't harm more than performance right? Well, the outcome was the same with or without the barriers anyway, so. Quad->Draw(GL_TRIANGLES) //Simple mesh class containing triangles (vertices) and colors Void *ptr = glMapBuffer(GL_TEXTURE_BUFFER, GL_WRITE_ONLY) Д¬olor *c = (color*)ptr //color is a simple struct containing 4 GLfloats.ДЇor (int i = 0 i Use() //Simple shader program class

#OPENGL 4.3 UPGRADE UPDATE#

With a delay in between so that I have time to see what the update does. Then the rendering loop is - update and draw, update and draw. GlBindImageTexture(2, tex, 0, GL_TRUE, 0, GL_READ_WRITE, GL_RGBA32F) GlTexBuffer(GL_TEXTURE_BUFFER, GL_RGBA32F, tex) GlBufferData(GL_TEXTURE_BUFFER, datasize, NULL, GL_DYNAMIC_COPY) Clearcolor and Cleardepth setup, disabling of depth test, compile and link shaderprogram etc.Дatasize = resolution.x * resolution.y * 4 * sizeof(GLfloat)

OK! First I initialize the buffer and texture.

So I created a simple test project and fumbled around a bit and now I think I've just pinched where the thing is. Therefore I moved back a notch and used glsl-images from texture buffer objects instead, which I guess had been supported since at least a while back. Well, the indices in that one were reflecting/moving forward in memory way wrong and I pretty much assumed that it was a driver bug - since they just recently started supporting such thing + yeah, it's a beta driver. OK, I began doing a OIT-rendering implementation and wanted to use a struct-array saved in a shader storage buffer object.

#OPENGL 4.3 UPGRADE DRIVERS#

I'm running this on AMD Radeon 5850 with the latest catalyst beta drivers as of last week. There must either be something that I've vastly misunderstood or there is some kind of bug either in the code or in the driver. I'm going a bit nuts on this since I don't really get what is wrong and what not.

Opengl 4.3 upgrade