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Implement EFB copy filter and gamma in hardware backends

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Also makes y_scale a dynamic parameter for EFB copies, as it doesn't
make sense to keep it as part of the uid, otherwise we're generating
redundant shaders.
This commit is contained in:
Stenzek
2018-04-29 18:52:30 +10:00
parent a192a3bb30
commit 9e798eec94
41 changed files with 526 additions and 236 deletions
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62
Source/Core/VideoCommon/TextureConverterShaderGen.cpp
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@ -38,34 +38,66 @@ ShaderCode GenerateShader(APIType api_type, const UidData* uid_data)
if (api_type == APIType::OpenGL)
{
out.Write("SAMPLER_BINDING(9) uniform sampler2DArray samp9;\n"
"#define samp0 samp9\n"
"#define uv0 f_uv0\n"
"uniform float3 filter_coefficients;\n"
"uniform float gamma_rcp;\n"
"uniform float2 clamp_tb;\n"
"uniform float pixel_height;\n");
out.Write("float4 SampleEFB(float3 uv, float y_offset) {\n"
" return texture(samp9, float3(uv.x, clamp(uv.y - (y_offset * pixel_height), "
"clamp_tb.x, clamp_tb.y), %s));\n"
"}\n",
mono_depth ? "0.0" : "uv.z");
out.Write("#define uv0 f_uv0\n"
"in vec3 uv0;\n"
"out vec4 ocol0;\n"
"void main(){\n"
" vec4 texcol = texture(samp0, %s);\n",
mono_depth ? "vec3(uv0.xy, 0.0)" : "uv0");
"void main(){\n");
}
else if (api_type == APIType::Vulkan)
{
out.Write("SAMPLER_BINDING(0) uniform sampler2DArray samp0;\n"
"layout(location = 0) in vec3 uv0;\n"
out.Write("UBO_BINDING(std140, 1) uniform PSBlock {\n"
" float3 filter_coefficients;\n"
" float gamma_rcp;\n"
" float2 clamp_tb;\n"
" float pixel_height;\n"
"};\n");
out.Write("SAMPLER_BINDING(0) uniform sampler2DArray samp0;\n");
out.Write("float4 SampleEFB(float3 uv, float y_offset) {\n"
" return texture(samp0, float3(uv.x, clamp(uv.y + (y_offset * pixel_height), "
"clamp_tb.x, clamp_tb.y), %s));\n"
"}\n",
mono_depth ? "0.0" : "uv.z");
out.Write("layout(location = 0) in vec3 uv0;\n"
"layout(location = 1) in vec4 col0;\n"
"layout(location = 0) out vec4 ocol0;"
"void main(){\n"
" vec4 texcol = texture(samp0, %s);\n",
mono_depth ? "vec3(uv0.xy, 0.0)" : "uv0");
"void main(){\n");
}
else if (api_type == APIType::D3D)
{
out.Write("Texture2DArray tex0 : register(t0);\n"
"SamplerState samp0 : register(s0);\n"
"void main(out float4 ocol0 : SV_Target,\n"
"uniform float3 filter_coefficients;\n"
"uniform float gamma_rcp;\n"
"uniform float2 clamp_tb;\n"
"uniform float pixel_height;\n\n");
out.Write("float4 SampleEFB(float3 uv, float y_offset) {\n"
" return tex0.Sample(samp0, float3(uv.x, clamp(uv.y + (y_offset * pixel_height), "
"clamp_tb.x, clamp_tb.y), %s));\n"
"}\n",
mono_depth ? "0.0" : "uv.z");
out.Write("void main(out float4 ocol0 : SV_Target,\n"
" in float4 pos : SV_Position,\n"
" in float3 uv0 : TEXCOORD0) {\n"
" float4 texcol = tex0.Sample(samp0, uv0);\n");
" in float3 uv0 : TEXCOORD0) {\n");
}
// 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->is_depth_copy)
{
if (api_type == APIType::D3D || api_type == APIType::Vulkan)
@ -223,8 +255,8 @@ ShaderCode GenerateShader(APIType api_type, const UidData* uid_data)
out.Write(" ocol0 = texcol;\n");
break;
case EFBCopyFormat::XFB: // XFB copy, we just pretend it's an RGBX copy
out.Write(" ocol0 = float4(texcol.rgb, 1.0);\n");
case EFBCopyFormat::XFB:
out.Write(" ocol0 = float4(pow(texcol.rgb, gamma_rcp.xxx), texcol.a);\n");
break;
default: