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Support Dual Source Blending in OGL plugin with GLSL.

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This commit is contained in:
Ryan Houdek
2011-12-08 05:09:48 -06:00
parent 62b9a779c1
commit 0ccba2b581
2 changed files with 18 additions and 13 deletions
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23
Source/Core/VideoCommon/Src/PixelShaderGen.cpp
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@ -675,10 +675,18 @@ const char *GeneratePixelShaderCode(DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType
{
// GLSL doesn't do main arguments
// Once we switch to GLSL 1.3 we will bind a lot of these.
WRITE(p, " float4 ocol0;\n");
if(dstAlphaMode == DSTALPHA_DUAL_SOURCE_BLEND)
WRITE(p, " float4 ocol1;\n"); // Will be supported later
{
// This won't get hit unless we support GL 3.3
WRITE(p, " layout(location = 0) out float4 ocol0;\n");
WRITE(p, " layout(location = 0, index = 1) out float4 ocol1;\n"); // Will be supported later
}
else
{
WRITE(p, " float4 ocol0;\n");
}
if(DepthTextureEnable)
WRITE(p, " float depth;\n"); // TODO: Passed to Vertex Shader right?
WRITE(p, " float4 rawpos = gl_FragCoord;\n");
@ -721,7 +729,7 @@ const char *GeneratePixelShaderCode(DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType
// alpha test will always fail, so restart the shader and just make it an empty function
WRITE(p, "ocol0 = float4(0);\n");
WRITE(p, "discard;\n");
if(ApiType == API_GLSL)
if(ApiType == API_GLSL && dstAlphaMode != DSTALPHA_DUAL_SOURCE_BLEND)
WRITE(p, "gl_FragData[0] = ocol0;\n");
if(ApiType != API_D3D11)
WRITE(p, "return;\n");
@ -833,7 +841,8 @@ const char *GeneratePixelShaderCode(DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType
if(ApiType == API_GLSL)
{
// Once we switch to GLSL 1.3 and bind variables, we won't need to do this
WRITE(p, "gl_FragData[0] = ocol0;\n");
if (dstAlphaMode != DSTALPHA_DUAL_SOURCE_BLEND)
WRITE(p, "gl_FragData[0] = ocol0;\n");
if(DepthTextureEnable)
WRITE(p, "gl_FragDepth = depth;\n");
if(dstAlphaMode == DSTALPHA_DUAL_SOURCE_BLEND)
@ -892,8 +901,8 @@ const char *GeneratePixelShaderCode(DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType
{
if(DepthTextureEnable)
WRITE(p, "gl_FragDepth = depth;\n");
WRITE(p, "gl_FragData[0] = ocol0;\n");
if (dstAlphaMode != DSTALPHA_DUAL_SOURCE_BLEND)
WRITE(p, "gl_FragData[0] = ocol0;\n");
}
}
WRITE(p, "}\n");