Hello All,
I've stumbled upon another, rather bizzare bug with extension GL_ARB_bindless_texture.
If both vertex shader and fragment shader has functions which accepts as parameter a sampler2D, they must 'decide' if either use bindless one or 'bind' one. Otherwise crash happen, even if fragment shader has just a function definition, without use.
As code is worth more than 1000 words, vertex shader:
#version 460 core
#extension GL_ARB_bindless_texture : require
#extension GL_ARB_gpu_shader5 : require
layout (location = 0) in vec2 vertexPosition;
layout (location = 5) out vec3 SomeValue;
uniform sampler2D someTexture;
//vec3 GetByHandle(uvec2 textureHandle, vec2 uv)
//{
// sampler2D texture = sampler2D(textureHandle);
//
// float normal1 = texture2D(texture, uv).r;
// return normal1.xxx;
//}
vec3 GetBySampler(sampler2D texture, vec2 uv)
{
float normal1 = texture2D(texture, uv).r;
return normal1.xxx;
}
void main()
{
//SomeValue = GetByHandle(uvec2(someTexture), vertexPosition);
SomeValue = GetBySampler(someTexture, vertexPosition);
vec4 vertexPositionWithHeight = vec4(vertexPosition.x, 0.0, vertexPosition.y, 1.0f);
gl_Position = vertexPositionWithHeight;
}
Fragment shader:
#version 460 core
#extension GL_ARB_bindless_texture : require
#extension GL_ARB_gpu_shader5 : require
out vec4 fragColor;
layout (location = 5) in vec3 SomeValue;
vec4 SampleTextureByHandle(uvec2 textureHandle, vec2 coords)
{
return texture2D(sampler2D(textureHandle), coords);
}
//vec4 SampleTextureBySampler(sampler2D texture, vec2 coords)
//{
// return texture2D(texture, coords);
//}
void main()
{
vec3 normalizedValue = normalize(SomeValue);
fragColor.rgb = normalizedValue;
fragColor.a = 1.0f;
}
Now, the funny part:
If both vertex and fragment use(has uncommented) GetByHandle and SampleTextureByHandle - everything works. Same situation if GetBySampler and SampleTextureBySampler is used (uncommented).
Removing SampleTextureByHandle and SampleTextureBySampler also works 🙂
It's REALLY bizzare behaviour and I'd love if it be fixed, or at least, if it could return an error or warning.
Driver version: 22.88.2
Graphics Card: RX 480 8GB
Best Regards
