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PixelShaderGen: Add support for dithering.

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This commit is contained in:
Jules Blok 2016-09-08 01:34:18 +02:00
parent b958457e51
commit 9bc466a443
2 changed files with 9 additions and 1 deletions
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7
Source/Core/VideoCommon/PixelShaderGen.cpp
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@ -170,6 +170,7 @@ PixelShaderUid GetPixelShaderUid(DSTALPHA_MODE dstAlphaMode)
uid_data->bounding_box = g_ActiveConfig.backend_info.bSupportsBBox &&
g_ActiveConfig.bBBoxEnable && BoundingBox::active;
uid_data->rgba6_format = bpmem.zcontrol.pixel_format == PEControl::RGBA6_Z24;
uid_data->dither = bpmem.blendmode.dither;
u32 numStages = uid_data->genMode_numtevstages + 1;
@ -779,6 +780,12 @@ ShaderCode GeneratePixelShaderCode(APIType ApiType, const pixel_shader_uid_data*
out.Write("\tdepth = float(zCoord) / 16777216.0;\n");
}
if (uid_data->dither && uid_data->rgba6_format)
{
out.Write("\tint2 dither = int2(rawpos.xy) & 1;\n");
out.Write("\tprev.rgb = (prev.rgb - (prev.rgb >> 6)) + abs(dither.y * 3 - dither.x * 2);\n");
}
if (uid_data->dstAlphaMode == DSTALPHA_ALPHA_PASS)
{
out.SetConstantsUsed(C_ALPHA, C_ALPHA);

3
Source/Core/VideoCommon/PixelShaderGen.h
View File

@ -54,7 +54,8 @@ struct pixel_shader_uid_data
u32 ssaa : 1;
u32 numColorChans : 2;
u32 rgba6_format : 1;
u32 pad : 13;
u32 dither : 1;
u32 pad : 12;
u32 texMtxInfo_n_projection : 8; // 8x1 bit
u32 tevindref_bi0 : 3;