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The GL_ARB_gpu_shader5 geometry shader path is broken on Vega 56, default to slightly slower old fashioned path for now.

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Mads Buvik Sandvei 2020-10-07 20:25:51 +02:00
parent 8a6738469e
commit 801f1ccc2e
1 changed files with 44 additions and 19 deletions
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63
components/shader/shadermanager.cpp
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@ -185,10 +185,20 @@ namespace Shader
{
static const char* geometryTemplate =
"#version 150 compatibility\n"
"#extension GL_NV_viewport_array : enable\n"
"#extension GL_ARB_gpu_shader5 : enable\n"
"layout (triangles, invocations = 2) in;\n"
"layout (triangle_strip, max_vertices = 3) out;\n"
"#extension GL_ARB_viewport_array : require\n"
//"#ifdef GL_ARB_gpu_shader5\n" // Ref: AnyOldName3: This slightly faster path is broken on Vega 56
"#if 0\n"
" #extension GL_ARB_gpu_shader5 : enable\n"
" #define ENABLE_GL_ARB_gpu_shader5\n"
"#endif\n"
"\n"
"#ifdef ENABLE_GL_ARB_gpu_shader5\n"
" layout (triangles, invocations = 2) in;\n"
" layout (triangle_strip, max_vertices = 3) out;\n"
"#else\n"
" layout (triangles) in;\n"
" layout (triangle_strip, max_vertices = 6) out;\n"
"#endif\n"
"\n"
"// Geometry Shader Inputs\n"
"@INPUTS\n"
@ -200,22 +210,37 @@ namespace Shader
"uniform mat4 stereoViewMatrices[2];\n"
"uniform mat4 stereoViewProjections[2];\n"
"\n"
"void main() {\n"
" for(int i = 0; i < gl_in.length(); i++)\n"
" {\n"
" gl_ViewportIndex = gl_InvocationID;\n"
" // Re-project\n"
" gl_Position = stereoViewProjections[gl_InvocationID] * vec4(vertex_passViewPos[i],1);\n"
" vec4 viewPos = stereoViewMatrices[gl_InvocationID] * vec4(vertex_passViewPos[i],1);\n"
" gl_ClipVertex = vec4(viewPos.xyz,1);\n"
"\n"
" // Input -> output\n"
"void perVertex(int vertex, int viewport)\n"
"{\n"
" gl_ViewportIndex = viewport;\n"
" // Re-project\n"
" gl_Position = stereoViewProjections[viewport] * vec4(vertex_passViewPos[vertex],1);\n"
" vec4 viewPos = stereoViewMatrices[viewport] * vec4(vertex_passViewPos[vertex],1);\n"
" gl_ClipVertex = vec4(viewPos.xyz,1);\n"
" \n"
" // Input -> output\n"
"@FORWARDING\n"
" \n"
" EmitVertex();\n"
"}\n"
"\n"
" EmitVertex();\n"
" }\n"
"void perViewport(int viewport)\n"
"{\n"
" for(int vertex = 0; vertex < gl_in.length(); vertex++)\n"
" {\n"
" perVertex(vertex, viewport);\n"
" }\n"
" EndPrimitive();\n"
"}\n"
"\n"
"void main() {\n"
"#ifdef ENABLE_GL_ARB_gpu_shader5\n"
" int viewport = gl_InvocationID;\n"
"#else\n"
" for(int viewport = 0; viewport < 2; viewport++)\n"
"#endif\n"
" perViewport(viewport);\n"
"\n"
" EndPrimitive();\n"
"}\n"
;
@ -232,7 +257,7 @@ namespace Shader
" 0.25, 0.5, 0.5, 1.0);\n"
" vec4 texcoordProj = ((scalemat) * (gl_Position));\n"
" screenCoordsPassthrough = texcoordProj.xyw;\n"
" if(gl_InvocationID == 1)\n"
" if(viewport == 1)\n"
" screenCoordsPassthrough.x += 0.5 * screenCoordsPassthrough.z;\n"
}
};
@ -255,7 +280,7 @@ namespace Shader
if (overriddenForwardStatements.count(declaration.identifier) > 0)
ssForwardStatements << overriddenForwardStatements[declaration.identifier] << ";\n";
else
ssForwardStatements << " " << declaration.identifier << " = " << declaration.mangledIdentifier << "[i];\n";
ssForwardStatements << " " << declaration.identifier << " = " << declaration.mangledIdentifier << "[vertex];\n";
identifiers.insert(declaration.identifier);
}