Julian BoyBaykiller

Calling glPushDebugGroup can easily introduce performance issues. The following loop with 50 iterations takes 22ms!

int main()
{
    glfwInit();
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 6);
 glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

Running this very simple shader causes a freeze for a few seconds and ultimately some kind of driver reset. This bug does not happen on latest public driver (24.3.1)!

Here is the shader code to reproduce it:

#version 460 core
#extension GL_ARB_bindless_texture : require

layout(local_size_x = 8, local_size_y = 8, local_size_z = 1) in;

High level steps to reproduce:

Create a valid 2D Texture with compressed internal format
Upload some pixels
Generate a bindless texture handle
Generate a mipmap for the texture

I can require and use GL_EXT_shader_image_load_formatted in OpenGL-GLSL shaders without any problems:

#extension GL_EXT_shader_image_load_formatted : require
layout(binding = 0) restrict uniform image2D ImgResult;

However on the client side the extension is not reported when asking for it like this:

GLint numExt;
glGetIntegerv(GL_NUM_EXTENSIONS, &amp;numExt);


	float Min3(float a, float b, float c)
	{
	return min(a, min(b, c));
	}
	float Max3(float a, float b, float c)
	{
	return max(a, max(b, c));
	}