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GPU: Add downsample scale option

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This commit is contained in:
Stenzek
2023-09-03 17:10:40 +10:00
parent c0af478dfd
commit 585cf25ac4
11 changed files with 169 additions and 52 deletions
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12
src/core/gpu_hw_shadergen.cpp
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@ -1558,24 +1558,26 @@ std::string GPU_HW_ShaderGen::GenerateAdaptiveDownsampleCompositeFragmentShader(
return ss.str();
}
std::string GPU_HW_ShaderGen::GenerateBoxSampleDownsampleFragmentShader()
std::string GPU_HW_ShaderGen::GenerateBoxSampleDownsampleFragmentShader(u32 factor)
{
std::stringstream ss;
WriteHeader(ss);
WriteCommonFunctions(ss);
DeclareTexture(ss, "samp0", 0, false);
ss << "#define FACTOR " << factor << "\n";
DeclareFragmentEntryPoint(ss, 0, 1, {}, true, 1, false, false, false, false);
ss << R"(
{
float3 color = float3(0.0, 0.0, 0.0);
uint2 base_coords = uint2(v_pos.xy) * uint2(RESOLUTION_SCALE, RESOLUTION_SCALE);
for (uint offset_x = 0u; offset_x < RESOLUTION_SCALE; offset_x++)
uint2 base_coords = uint2(v_pos.xy) * uint2(FACTOR, FACTOR);
for (uint offset_x = 0u; offset_x < FACTOR; offset_x++)
{
for (uint offset_y = 0u; offset_y < RESOLUTION_SCALE; offset_y++)
for (uint offset_y = 0u; offset_y < FACTOR; offset_y++)
color += LOAD_TEXTURE(samp0, int2(base_coords + uint2(offset_x, offset_y)), 0).rgb;
}
color /= float(RESOLUTION_SCALE * RESOLUTION_SCALE);
color /= float(FACTOR * FACTOR);
o_col0 = float4(color, 1.0);
}
)";