If one declares some bindless textures with a ubo while also binding a image traditionally and then calls imageSize on the traditionally bound image the driver will crash. Have not tested textureSize aswell.
gpu rx5700xt : windows 10
driver 23.5.2: broken
driver 22.1.2: working
Added cpu side gl calls with more testing. In the large codebase I wasn't setting a program uniform for that shader and it was still crashing but in a small example was not. just happened to get a different conflicting index location?. However adding a glProgramUniform2i to index location 0 would cause a driver timeout again, maybe separate issues?.
layout (binding = 0) uniform writeonly image2D output_image;
// if declared can also stop timeouts if cpu programUniform set to same location
// driver shifts uniform index of imageSize?
// layout (location = 0) uniform ivec2 uniform_resolution;
// removing this will always stop timeouts. makes no differance if a ubo has actually
// been created and bound to the location with a bindless texture or not
layout (std140, binding = 0) uniform BINDLESS_TEXTURE_BUFFER {
sampler2D reflectance_texture;
};
void main() {
ivec2 resolution = imageSize(output_image); // crash
ivec2 invCoord = ivec2(gl_GlobalInvocationID.xy);
imageStore(output_image, invCoord, vec4(0, 0, 0, 1));
}
// init
int textureID, pipelineID;
int shaderID = glCreateShaderProgramv(GL_COMPUTE_SHADER, 1, shader_string);
glCreateTextures(GL_TEXTURE_2D, 1, &textureID);
glTextureStorage2D(textureID, 1, GL_RGBA16F, 1024, 1024);
glTextureParameteri(textureID, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTextureParameteri(textureID, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glCreateProgramPipelines(1, &pipelineID);
glUseProgramStages(pipelineID, GL_COMPUTE_SHADER_BIT, shaderID);
// loop
glBindProgramPipeline(pipelineID);
glProgramUniform2i(programID, 0, 1024, 1024); // 'wasn't calling before' if location set to 1 no crash. imageSize takes slot 0 by default?
glBindImageTexture(0, textureID, 0, GL_FALSE, 0, GL_READ_WRITE, GL_RGBA16F);
glDispatchCompute(1024 / 8, 1024 / 8, 1); // driver timeout on dispatch
