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Support Dual Source Blending in OGL plugin with GLSL.

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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17
Source/Core/VideoCommon/Src/PixelShaderGen.cpp
View File

@ -676,9 +676,17 @@ 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");
@ -833,6 +841,7 @@ 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
if (dstAlphaMode != DSTALPHA_DUAL_SOURCE_BLEND)
WRITE(p, "gl_FragData[0] = ocol0;\n");
if(DepthTextureEnable)
WRITE(p, "gl_FragDepth = depth;\n");
@ -892,7 +901,7 @@ const char *GeneratePixelShaderCode(DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType
{
if(DepthTextureEnable)
WRITE(p, "gl_FragDepth = depth;\n");
if (dstAlphaMode != DSTALPHA_DUAL_SOURCE_BLEND)
WRITE(p, "gl_FragData[0] = ocol0;\n");
}
}

8
Source/Plugins/Plugin_VideoOGL/Src/VertexManager.cpp
View File

@ -177,8 +177,8 @@ void VertexManager::vFlush()
bool useDstAlpha = !g_ActiveConfig.bDstAlphaPass && bpmem.dstalpha.enable && bpmem.blendmode.alphaupdate
&& bpmem.zcontrol.pixel_format == PIXELFMT_RGBA6_Z24;
#ifdef USE_DUAL_SOURCE_BLEND
bool dualSourcePossible = GLEW_ARB_blend_func_extended;
// Makes sure we can actually do Dual source blending
bool dualSourcePossible = g_ActiveConfig.bUseGLSL && g_ActiveConfig.backend_info.bSupportsGLSLBinding;
// finally bind
FRAGMENTSHADER* ps;
@ -201,10 +201,6 @@ void VertexManager::vFlush()
{
ps = PixelShaderCache::SetShader(DSTALPHA_NONE,g_nativeVertexFmt->m_components);
}
#else
bool dualSourcePossible = false;
FRAGMENTSHADER* ps = PixelShaderCache::SetShader(DSTALPHA_NONE,g_nativeVertexFmt->m_components);
#endif
VERTEXSHADER* vs = VertexShaderCache::SetShader(g_nativeVertexFmt->m_components);
if(g_ActiveConfig.bUseGLSL)