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TextureConversionShader: Don't sample from adjacent rows when not needed

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This commit is contained in:
Stenzek 2018-05-03 14:09:32 +10:00
commit 4faac3a627
8 changed files with 74 additions and 35 deletions
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24
Source/Core/VideoCommon/TextureConverterShaderGen.cpp
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@ -15,7 +15,7 @@
namespace TextureConversionShaderGen
{
TCShaderUid GetShaderUid(EFBCopyFormat dst_format, bool is_depth_copy, bool is_intensity,
bool scale_by_half)
bool scale_by_half, bool copy_filter)
{
TCShaderUid out;
UidData* uid_data = out.GetUidData<UidData>();
@ -26,6 +26,7 @@ TCShaderUid GetShaderUid(EFBCopyFormat dst_format, bool is_depth_copy, bool is_i
uid_data->is_depth_copy = is_depth_copy;
uid_data->is_intensity = is_intensity;
uid_data->scale_by_half = scale_by_half;
uid_data->copy_filter = copy_filter;
return out;
}
@ -91,12 +92,21 @@ ShaderCode GenerateShader(APIType api_type, const UidData* uid_data)
// The copy filter applies to both color and depth copies. This has been verified on hardware.
// The filter is only applied to the RGB channels, the alpha channel is left intact.
out.Write(" float4 prev_row = SampleEFB(uv0, -1.0f);\n"
" float4 current_row = SampleEFB(uv0, 0.0f);\n"
" float4 next_row = SampleEFB(uv0, 1.0f);\n"
" float4 texcol = float4(prev_row.rgb * filter_coefficients[0] +\n"
" current_row.rgb * filter_coefficients[1] +\n"
" next_row.rgb * filter_coefficients[2], current_row.a);\n");
if (uid_data->copy_filter)
{
out.Write(" float4 prev_row = SampleEFB(uv0, -1.0f);\n"
" float4 current_row = SampleEFB(uv0, 0.0f);\n"
" float4 next_row = SampleEFB(uv0, 1.0f);\n"
" float4 texcol = float4(prev_row.rgb * filter_coefficients[0] +\n"
" current_row.rgb * filter_coefficients[1] +\n"
" next_row.rgb * filter_coefficients[2], current_row.a);\n");
}
else
{
out.Write(
" float4 current_row = SampleEFB(uv0, 0.0f);\n"
" float4 texcol = float4(current_row.rgb * filter_coefficients[1], current_row.a);\n");
}
if (uid_data->is_depth_copy)
{