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GPU/HW: Dynamically size downsampling textures

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This commit is contained in:
Stenzek
2023-12-08 17:35:34 +10:00
parent ff37afef55
commit f1604db4a3
3 changed files with 84 additions and 67 deletions
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8
src/core/gpu_hw_shadergen.cpp
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@ -1582,10 +1582,9 @@ std::string GPU_HW_ShaderGen::GenerateAdaptiveDownsampleCompositeFragmentShader(
DeclareFragmentEntryPoint(ss, 0, 1, {}, true, 1, false, false, false, false);
ss << R"(
{
float2 uv = v_pos.xy * RCP_VRAM_SIZE;
float bias = SAMPLE_TEXTURE(samp1, uv).r;
float bias = SAMPLE_TEXTURE(samp1, v_tex0).r;
float mip = float(RESOLUTION_SCALE - 1u) * bias;
float3 color = SAMPLE_TEXTURE_LEVEL(samp0, uv, mip).rgb;
float3 color = SAMPLE_TEXTURE_LEVEL(samp0, v_tex0, mip).rgb;
o_col0 = float4(color, 1.0);
}
)";
@ -1598,6 +1597,7 @@ std::string GPU_HW_ShaderGen::GenerateBoxSampleDownsampleFragmentShader(u32 fact
std::stringstream ss;
WriteHeader(ss);
WriteCommonFunctions(ss);
DeclareUniformBuffer(ss, {"uint2 u_base_coords"}, true);
DeclareTexture(ss, "samp0", 0, false);
ss << "#define FACTOR " << factor << "\n";
@ -1606,7 +1606,7 @@ std::string GPU_HW_ShaderGen::GenerateBoxSampleDownsampleFragmentShader(u32 fact
ss << R"(
{
float3 color = float3(0.0, 0.0, 0.0);
uint2 base_coords = uint2(v_pos.xy) * uint2(FACTOR, FACTOR);
uint2 base_coords = u_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 < FACTOR; offset_y++)