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- Added a check to allow shader storage buffers on GL 4.3 Intel drivers. It doesn't work if GLSL version is set to 4.0 and the feature activated via extension.

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This commit is contained in:
Christoph Oelckers 2017-03-11 20:14:18 +01:00
parent 9eae422dab
commit 9e70771da3
2 changed files with 7 additions and 3 deletions
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6
src/gl/shaders/gl_shader.cpp
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@ -97,7 +97,11 @@ bool FShader::Load(const char * name, const char * vert_prog_lump, const char *
}
else
{
vp_comb = "#version 400 core\n#extension GL_ARB_shader_storage_buffer_object : require\n#define SHADER_STORAGE_LIGHTS\n";
// This differentiation is for Intel which do not seem to expose the full extension, even if marked as required.
if (gl.glslversion < 4.3f)
vp_comb = "#version 400 core\n#extension GL_ARB_shader_storage_buffer_object : require\n#define SHADER_STORAGE_LIGHTS\n";
else
vp_comb = "#version 430 core\n#define SHADER_STORAGE_LIGHTS\n";
}
if (gl.buffermethod == BM_DEFERRED)

4
src/gl/system/gl_interface.cpp
View file

@ -233,8 +233,8 @@ void gl_LoadExtensions()
// Recent drivers, GL 4.4 don't have this problem, these can easily be recognized by also supporting the GL_ARB_buffer_storage extension.
if (CheckExtension("GL_ARB_shader_storage_buffer_object"))
{
// Shader storage buffer objects are broken on current Intel drivers.
if (strstr(gl.vendorstring, "Intel") == NULL)
// Intel's GLSL compiler is a bit broken with extensions, so unlock the feature only if not on Intel or having GL 4.3.
if (strstr(gl.vendorstring, "Intel") == NULL || gl_version >= 4.3f)
{
gl.flags |= RFL_SHADER_STORAGE_BUFFER;
}