ilikecats/stk-code_catmod
1
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fixed compute shaders compilation for drivers which report only OpenGL 3.x

Browse Source
This commit is contained in:
Deve 2015-12-20 13:15:28 +01:00
parent 9eb6694d61
commit f9c48a0fa2
1 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/graphics/shader.cpp
View File

@ -66,8 +66,24 @@ GLuint ShaderBase::loadShader(const std::string &file, unsigned type)
std::ostringstream code;
code << "#version " << CVS->getGLSLVersion()<<"\n";
// Some drivers report that the compute shaders extension is available,
// but they report only OpenGL 3.x version, and thus these extensions
// must be enabled manually. Otherwise the shaders compilation will fail
// because STK tries to use extensions which are available, but disabled
// by default.
if (type == GL_COMPUTE_SHADER)
{
if (CVS->isARBComputeShaderUsable())
code << "#extension GL_ARB_compute_shader : enable\n";
if (CVS->isARBImageLoadStoreUsable())
code << "#extension GL_ARB_shader_image_load_store : enable\n";
if (CVS->isARBArraysOfArraysUsable())
code << "#extension GL_ARB_arrays_of_arrays : enable\n";
}
if (CVS->isAMDVertexShaderLayerUsable())
code << "#extension GL_AMD_vertex_shader_layer : enable\n";
if (CVS->isAZDOEnabled())
{
code << "#extension GL_ARB_bindless_texture : enable\n";
@ -80,7 +96,7 @@ GLuint ShaderBase::loadShader(const std::string &file, unsigned type)
code << "#define VSLayer\n";
if (CVS->needsRGBBindlessWorkaround())
code << "#define SRGBBindlessFix\n";
//shader compilation fails with some drivers if there is no precision qualifier
if (type == GL_FRAGMENT_SHADER)
code << "precision mediump float;\n";