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Fix gpu_shader4 for some drivers

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- Add gl_InstanceID (GL_ARB_draw_instanced) support for drivers that don't implement GL_EXT_gpu_shader4 extension (e.g. mesa driver 'i915' on Pentium G3258).
- Don't emit the glsl extension GL_EXT_gpu_shader4 if it isn't supported by the driver (e.g. mesa driver 'i915'). In case the shader uses gl_VertexID, bump up the shader version to 130.
This commit is contained in:
kingscallop
2019-09-01 21:52:07 +01:00
committed by Бранимир Караџић
parent 65303869ab
commit fe045d0c98
1 changed files with 22 additions and 1 deletions
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23
src/renderer_gl.cpp
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@@ -5539,7 +5539,22 @@ BX_TRACE("%d, %d, %d, %s", _array, _srgb, _mipAutogen, getName(_format) );
&& s_extension[Extension::ARB_shader_texture_lod].m_supported
&& !bx::findIdentifierMatch(code, s_ARB_shader_texture_lod).isEmpty()
;
const bool usesGpuShader4 = !bx::findIdentifierMatch(code, s_EXT_gpu_shader4).isEmpty();
const bool usesVertexID = true
&& !s_extension[Extension::EXT_gpu_shader4].m_supported
&& !bx::findIdentifierMatch(code, "gl_VertexID").isEmpty()
;
const bool usesInstanceID = true
&& !s_extension[Extension::EXT_gpu_shader4].m_supported
&& !bx::findIdentifierMatch(code, "gl_InstanceID").isEmpty()
;
const bool usesGpuShader4 = true
&& s_extension[Extension::EXT_gpu_shader4].m_supported
&& !bx::findIdentifierMatch(code, s_EXT_gpu_shader4).isEmpty()
;
const bool usesGpuShader5 = !bx::findIdentifierMatch(code, s_ARB_gpu_shader5).isEmpty();
const bool usesIUsamplers = !bx::findIdentifierMatch(code, s_uisamplers).isEmpty();
const bool usesUint = !bx::findIdentifierMatch(code, s_uint).isEmpty();
@@ -5554,6 +5569,7 @@ BX_TRACE("%d, %d, %d, %s", _array, _srgb, _mipAutogen, getName(_format) );
: usesTextureArray
|| usesTexture3D
|| usesIUsamplers
|| usesVertexID
|| usesUint
|| usesTexelFetch
|| usesGpuShader5
@@ -5580,6 +5596,11 @@ BX_TRACE("%d, %d, %d, %s", _array, _srgb, _mipAutogen, getName(_format) );
}
}
if (usesInstanceID)
{
bx::write(&writer, "#extension GL_ARB_draw_instanced : enable\n");
}
if (usesGpuShader4)
{
bx::write(&writer, "#extension GL_EXT_gpu_shader4 : enable\n");