mirror of
https://github.com/libretro/dolphin
synced 2024-11-04 20:43:51 -05:00
687f1f0330
Now that we've converted the shader generation over to ShaderCode, we can now make use of the fmt-capable WriteFmt function.
1547 lines
51 KiB
C++
1547 lines
51 KiB
C++
// Copyright 2009 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include "VideoCommon/TextureConversionShader.h"
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#include <map>
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#include <sstream>
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#include <string_view>
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#include "Common/CommonTypes.h"
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#include "Common/MathUtil.h"
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#include "Common/MsgHandler.h"
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#include "VideoCommon/ShaderGenCommon.h"
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#include "VideoCommon/TextureCacheBase.h"
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#include "VideoCommon/VertexManagerBase.h"
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#include "VideoCommon/VideoCommon.h"
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#include "VideoCommon/VideoConfig.h"
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namespace TextureConversionShaderTiled
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{
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static bool IntensityConstantAdded = false;
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u16 GetEncodedSampleCount(EFBCopyFormat format)
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{
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switch (format)
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{
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case EFBCopyFormat::R4:
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return 8;
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case EFBCopyFormat::RA4:
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return 4;
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case EFBCopyFormat::RA8:
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return 2;
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case EFBCopyFormat::RGB565:
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return 2;
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case EFBCopyFormat::RGB5A3:
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return 2;
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case EFBCopyFormat::RGBA8:
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return 1;
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case EFBCopyFormat::A8:
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case EFBCopyFormat::R8_0x1:
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case EFBCopyFormat::R8:
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case EFBCopyFormat::G8:
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case EFBCopyFormat::B8:
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return 4;
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case EFBCopyFormat::RG8:
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case EFBCopyFormat::GB8:
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return 2;
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case EFBCopyFormat::XFB:
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return 2;
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default:
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PanicAlert("Invalid EFB Copy Format (0x%X)! (GetEncodedSampleCount)", static_cast<int>(format));
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return 1;
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}
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}
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static void WriteHeader(ShaderCode& code, APIType api_type)
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{
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if (api_type == APIType::OpenGL || api_type == APIType::Vulkan)
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{
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// left, top, of source rectangle within source texture
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// width of the destination rectangle, scale_factor (1 or 2)
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code.WriteFmt("UBO_BINDING(std140, 1) uniform PSBlock {{\n"
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" int4 position;\n"
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" float y_scale;\n"
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" float gamma_rcp;\n"
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" float2 clamp_tb;\n"
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" float3 filter_coefficients;\n"
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"}};\n");
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if (g_ActiveConfig.backend_info.bSupportsGeometryShaders)
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{
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code.WriteFmt("VARYING_LOCATION(0) in VertexData {{\n"
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" float3 v_tex0;\n"
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"}};\n");
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}
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else
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{
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code.WriteFmt("VARYING_LOCATION(0) in float3 v_tex0;\n");
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}
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code.WriteFmt("SAMPLER_BINDING(0) uniform sampler2DArray samp0;\n"
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"FRAGMENT_OUTPUT_LOCATION(0) out float4 ocol0;\n");
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}
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else // D3D
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{
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code.WriteFmt("cbuffer PSBlock : register(b0) {{\n"
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" int4 position;\n"
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" float y_scale;\n"
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" float gamma_rcp;\n"
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" float2 clamp_tb;\n"
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" float3 filter_coefficients;\n"
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"}};\n"
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"sampler samp0 : register(s0);\n"
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"Texture2DArray Tex0 : register(t0);\n");
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}
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// D3D does not have roundEven(), only round(), which is specified "to the nearest integer".
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// This differs from the roundEven() behavior, but to get consistency across drivers in OpenGL
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// we need to use roundEven().
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if (api_type == APIType::D3D)
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code.WriteFmt("#define roundEven(x) round(x)\n");
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// Alpha channel in the copy is set to 1 the EFB format does not have an alpha channel.
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code.WriteFmt("float4 RGBA8ToRGB8(float4 src)\n"
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"{{\n"
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" return float4(src.xyz, 1.0);\n"
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"}}\n"
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"float4 RGBA8ToRGBA6(float4 src)\n"
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"{{\n"
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" int4 val = int4(roundEven(src * 255.0)) >> 2;\n"
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" return float4(val) / 63.0;\n"
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"}}\n"
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"float4 RGBA8ToRGB565(float4 src)\n"
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"{{\n"
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" int4 val = int4(roundEven(src * 255.0));\n"
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" val = int4(val.r >> 3, val.g >> 2, val.b >> 3, 1);\n"
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" return float4(val) / float4(31.0, 63.0, 31.0, 1.0);\n"
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"}}\n");
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}
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static void WriteSampleFunction(ShaderCode& code, const EFBCopyParams& params, APIType api_type)
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{
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const auto WriteSampleOp = [api_type, &code, ¶ms](int yoffset) {
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if (!params.depth)
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{
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switch (params.efb_format)
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{
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case PEControl::RGB8_Z24:
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code.WriteFmt("RGBA8ToRGB8(");
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break;
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case PEControl::RGBA6_Z24:
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code.WriteFmt("RGBA8ToRGBA6(");
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break;
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case PEControl::RGB565_Z16:
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code.WriteFmt("RGBA8ToRGB565(");
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break;
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default:
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code.WriteFmt("(");
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break;
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}
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}
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else
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{
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// Handle D3D depth inversion.
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if (!g_ActiveConfig.backend_info.bSupportsReversedDepthRange)
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code.WriteFmt("1.0 - (");
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else
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code.WriteFmt("(");
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}
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if (api_type == APIType::OpenGL || api_type == APIType::Vulkan)
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code.WriteFmt("texture(samp0, float3(");
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else
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code.WriteFmt("Tex0.Sample(samp0, float3(");
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code.WriteFmt("uv.x + float(xoffset) * pixel_size.x, ");
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// Reverse the direction for OpenGL, since positive numbers are distance from the bottom row.
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if (yoffset != 0)
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{
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if (api_type == APIType::OpenGL)
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code.WriteFmt("clamp(uv.y - float({}) * pixel_size.y, clamp_tb.x, clamp_tb.y)", yoffset);
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else
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code.WriteFmt("clamp(uv.y + float({}) * pixel_size.y, clamp_tb.x, clamp_tb.y)", yoffset);
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}
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else
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{
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code.WriteFmt("uv.y");
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}
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code.WriteFmt(", 0.0)))");
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};
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// The copy filter applies to both color and depth copies. This has been verified on hardware.
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// The filter is only applied to the RGB channels, the alpha channel is left intact.
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code.WriteFmt("float4 SampleEFB(float2 uv, float2 pixel_size, int xoffset)\n"
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"{{\n");
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if (params.copy_filter)
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{
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code.WriteFmt(" float4 prev_row = ");
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WriteSampleOp(-1);
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code.WriteFmt(";\n"
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" float4 current_row = ");
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WriteSampleOp(0);
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code.WriteFmt(";\n"
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" float4 next_row = ");
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WriteSampleOp(1);
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code.WriteFmt(";\n"
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" return float4(min(prev_row.rgb * filter_coefficients[0] +\n"
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" current_row.rgb * filter_coefficients[1] +\n"
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" next_row.rgb * filter_coefficients[2], \n"
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" float3(1, 1, 1)), current_row.a);\n");
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}
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else
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{
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code.WriteFmt(" float4 current_row = ");
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WriteSampleOp(0);
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code.WriteFmt(";\n"
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"return float4(min(current_row.rgb * filter_coefficients[1], float3(1, 1, 1)),\n"
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" current_row.a);\n");
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}
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code.WriteFmt("}}\n");
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}
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// Block dimensions : widthStride, heightStride
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// Texture dimensions : width, height, x offset, y offset
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static void WriteSwizzler(ShaderCode& code, const EFBCopyParams& params, EFBCopyFormat format,
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APIType api_type)
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{
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WriteHeader(code, api_type);
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WriteSampleFunction(code, params, api_type);
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if (api_type == APIType::OpenGL || api_type == APIType::Vulkan)
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{
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code.WriteFmt("void main()\n"
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"{{\n"
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" int2 sampleUv;\n"
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" int2 uv1 = int2(gl_FragCoord.xy);\n");
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}
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else // D3D
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{
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code.WriteFmt("void main(\n"
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" in float3 v_tex0 : TEXCOORD0,\n"
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" in float4 rawpos : SV_Position,\n"
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" out float4 ocol0 : SV_Target)\n"
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"{{\n"
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" int2 sampleUv;\n"
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" int2 uv1 = int2(rawpos.xy);\n");
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}
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const int blkW = TexDecoder_GetEFBCopyBlockWidthInTexels(format);
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const int blkH = TexDecoder_GetEFBCopyBlockHeightInTexels(format);
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int samples = GetEncodedSampleCount(format);
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code.WriteFmt(" int x_block_position = (uv1.x >> {}) << {};\n", IntLog2(blkH * blkW / samples),
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IntLog2(blkW));
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code.WriteFmt(" int y_block_position = uv1.y << {};\n", IntLog2(blkH));
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if (samples == 1)
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{
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// With samples == 1, we write out pairs of blocks; one A8R8, one G8B8.
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code.WriteFmt(" bool first = (uv1.x & {}) == 0;\n", blkH * blkW / 2);
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samples = 2;
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}
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code.WriteFmt(" int offset_in_block = uv1.x & {};\n", (blkH * blkW / samples) - 1);
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code.WriteFmt(" int y_offset_in_block = offset_in_block >> {};\n", IntLog2(blkW / samples));
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code.WriteFmt(" int x_offset_in_block = (offset_in_block & {}) << {};\n", (blkW / samples) - 1,
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IntLog2(samples));
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code.WriteFmt(" sampleUv.x = x_block_position + x_offset_in_block;\n"
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" sampleUv.y = y_block_position + y_offset_in_block;\n");
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// sampleUv is the sample position in (int)gx_coords
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code.WriteFmt(" float2 uv0 = float2(sampleUv);\n");
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// Move to center of pixel
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code.WriteFmt(" uv0 += float2(0.5, 0.5);\n");
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// Scale by two if needed (also move to pixel borders
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// so that linear filtering will average adjacent
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// pixel)
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code.WriteFmt(" uv0 *= float(position.w);\n");
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// Move to copied rect
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code.WriteFmt(" uv0 += float2(position.xy);\n");
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// Normalize to [0:1]
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code.WriteFmt(" uv0 /= float2({}, {});\n", EFB_WIDTH, EFB_HEIGHT);
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// Apply the y scaling
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code.WriteFmt(" uv0 /= float2(1, y_scale);\n");
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// OGL has to flip up and down
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if (api_type == APIType::OpenGL)
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{
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code.WriteFmt(" uv0.y = 1.0-uv0.y;\n");
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}
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code.WriteFmt(" float2 pixel_size = float2(position.w, position.w) / float2({}, {});\n",
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EFB_WIDTH, EFB_HEIGHT);
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}
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static void WriteSampleColor(ShaderCode& code, std::string_view color_comp, std::string_view dest,
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int x_offset, APIType api_type, const EFBCopyParams& params)
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{
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code.WriteFmt(" {} = SampleEFB(uv0, pixel_size, {}).{};\n", dest, x_offset, color_comp);
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}
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static void WriteColorToIntensity(ShaderCode& code, std::string_view src, std::string_view dest)
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{
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if (!IntensityConstantAdded)
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{
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code.WriteFmt(" float4 IntensityConst = float4(0.257f,0.504f,0.098f,0.0625f);\n");
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IntensityConstantAdded = true;
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}
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code.WriteFmt(" {} = dot(IntensityConst.rgb, {}.rgb);\n", dest, src);
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// don't add IntensityConst.a yet, because doing it later is faster and uses less instructions,
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// due to vectorization
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}
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static void WriteToBitDepth(ShaderCode& code, u8 depth, std::string_view src, std::string_view dest)
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{
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code.WriteFmt(" {} = floor({} * 255.0 / exp2(8.0 - {}.0));\n", dest, src, depth);
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}
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static void WriteEncoderEnd(ShaderCode& code)
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{
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code.WriteFmt("}}\n");
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IntensityConstantAdded = false;
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}
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static void WriteI8Encoder(ShaderCode& code, APIType api_type, const EFBCopyParams& params)
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{
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WriteSwizzler(code, params, EFBCopyFormat::R8, api_type);
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code.WriteFmt(" float3 texSample;\n");
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WriteSampleColor(code, "rgb", "texSample", 0, api_type, params);
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WriteColorToIntensity(code, "texSample", "ocol0.b");
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WriteSampleColor(code, "rgb", "texSample", 1, api_type, params);
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WriteColorToIntensity(code, "texSample", "ocol0.g");
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WriteSampleColor(code, "rgb", "texSample", 2, api_type, params);
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WriteColorToIntensity(code, "texSample", "ocol0.r");
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WriteSampleColor(code, "rgb", "texSample", 3, api_type, params);
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WriteColorToIntensity(code, "texSample", "ocol0.a");
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// See WriteColorToIntensity
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code.WriteFmt(" ocol0.rgba += IntensityConst.aaaa;\n");
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WriteEncoderEnd(code);
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}
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static void WriteI4Encoder(ShaderCode& code, APIType api_type, const EFBCopyParams& params)
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{
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WriteSwizzler(code, params, EFBCopyFormat::R4, api_type);
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code.WriteFmt(" float3 texSample;\n"
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" float4 color0;\n"
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" float4 color1;\n");
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WriteSampleColor(code, "rgb", "texSample", 0, api_type, params);
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WriteColorToIntensity(code, "texSample", "color0.b");
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WriteSampleColor(code, "rgb", "texSample", 1, api_type, params);
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WriteColorToIntensity(code, "texSample", "color1.b");
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WriteSampleColor(code, "rgb", "texSample", 2, api_type, params);
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WriteColorToIntensity(code, "texSample", "color0.g");
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WriteSampleColor(code, "rgb", "texSample", 3, api_type, params);
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WriteColorToIntensity(code, "texSample", "color1.g");
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WriteSampleColor(code, "rgb", "texSample", 4, api_type, params);
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WriteColorToIntensity(code, "texSample", "color0.r");
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WriteSampleColor(code, "rgb", "texSample", 5, api_type, params);
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WriteColorToIntensity(code, "texSample", "color1.r");
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WriteSampleColor(code, "rgb", "texSample", 6, api_type, params);
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WriteColorToIntensity(code, "texSample", "color0.a");
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WriteSampleColor(code, "rgb", "texSample", 7, api_type, params);
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WriteColorToIntensity(code, "texSample", "color1.a");
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code.WriteFmt(" color0.rgba += IntensityConst.aaaa;\n"
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" color1.rgba += IntensityConst.aaaa;\n");
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WriteToBitDepth(code, 4, "color0", "color0");
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WriteToBitDepth(code, 4, "color1", "color1");
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code.WriteFmt(" ocol0 = (color0 * 16.0 + color1) / 255.0;\n");
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WriteEncoderEnd(code);
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}
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static void WriteIA8Encoder(ShaderCode& code, APIType api_type, const EFBCopyParams& params)
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{
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WriteSwizzler(code, params, EFBCopyFormat::RA8, api_type);
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code.WriteFmt(" float4 texSample;\n");
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WriteSampleColor(code, "rgba", "texSample", 0, api_type, params);
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code.WriteFmt(" ocol0.b = texSample.a;\n");
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WriteColorToIntensity(code, "texSample", "ocol0.g");
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WriteSampleColor(code, "rgba", "texSample", 1, api_type, params);
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code.WriteFmt(" ocol0.r = texSample.a;\n");
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WriteColorToIntensity(code, "texSample", "ocol0.a");
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code.WriteFmt(" ocol0.ga += IntensityConst.aa;\n");
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WriteEncoderEnd(code);
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}
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static void WriteIA4Encoder(ShaderCode& code, APIType api_type, const EFBCopyParams& params)
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{
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WriteSwizzler(code, params, EFBCopyFormat::RA4, api_type);
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code.WriteFmt(" float4 texSample;\n"
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" float4 color0;\n"
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" float4 color1;\n");
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WriteSampleColor(code, "rgba", "texSample", 0, api_type, params);
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code.WriteFmt(" color0.b = texSample.a;\n");
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WriteColorToIntensity(code, "texSample", "color1.b");
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WriteSampleColor(code, "rgba", "texSample", 1, api_type, params);
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code.WriteFmt(" color0.g = texSample.a;\n");
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WriteColorToIntensity(code, "texSample", "color1.g");
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WriteSampleColor(code, "rgba", "texSample", 2, api_type, params);
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code.WriteFmt(" color0.r = texSample.a;\n");
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WriteColorToIntensity(code, "texSample", "color1.r");
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WriteSampleColor(code, "rgba", "texSample", 3, api_type, params);
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code.WriteFmt(" color0.a = texSample.a;\n");
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WriteColorToIntensity(code, "texSample", "color1.a");
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code.WriteFmt(" color1.rgba += IntensityConst.aaaa;\n");
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WriteToBitDepth(code, 4, "color0", "color0");
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WriteToBitDepth(code, 4, "color1", "color1");
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code.WriteFmt(" ocol0 = (color0 * 16.0 + color1) / 255.0;\n");
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WriteEncoderEnd(code);
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}
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static void WriteRGB565Encoder(ShaderCode& code, APIType api_type, const EFBCopyParams& params)
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{
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WriteSwizzler(code, params, EFBCopyFormat::RGB565, api_type);
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code.WriteFmt(" float3 texSample0;\n"
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" float3 texSample1;\n");
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WriteSampleColor(code, "rgb", "texSample0", 0, api_type, params);
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WriteSampleColor(code, "rgb", "texSample1", 1, api_type, params);
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code.WriteFmt(" float2 texRs = float2(texSample0.r, texSample1.r);\n"
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" float2 texGs = float2(texSample0.g, texSample1.g);\n"
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" float2 texBs = float2(texSample0.b, texSample1.b);\n");
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WriteToBitDepth(code, 6, "texGs", "float2 gInt");
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code.WriteFmt(" float2 gUpper = floor(gInt / 8.0);\n"
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" float2 gLower = gInt - gUpper * 8.0;\n");
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WriteToBitDepth(code, 5, "texRs", "ocol0.br");
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code.WriteFmt(" ocol0.br = ocol0.br * 8.0 + gUpper;\n");
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WriteToBitDepth(code, 5, "texBs", "ocol0.ga");
|
|
code.WriteFmt(" ocol0.ga = ocol0.ga + gLower * 32.0;\n");
|
|
|
|
code.WriteFmt(" ocol0 = ocol0 / 255.0;\n");
|
|
WriteEncoderEnd(code);
|
|
}
|
|
|
|
static void WriteRGB5A3Encoder(ShaderCode& code, APIType api_type, const EFBCopyParams& params)
|
|
{
|
|
WriteSwizzler(code, params, EFBCopyFormat::RGB5A3, api_type);
|
|
|
|
code.WriteFmt(" float4 texSample;\n"
|
|
" float color0;\n"
|
|
" float gUpper;\n"
|
|
" float gLower;\n");
|
|
|
|
WriteSampleColor(code, "rgba", "texSample", 0, api_type, params);
|
|
|
|
// 0.8784 = 224 / 255 which is the maximum alpha value that can be represented in 3 bits
|
|
code.WriteFmt("if(texSample.a > 0.878f) {{\n");
|
|
|
|
WriteToBitDepth(code, 5, "texSample.g", "color0");
|
|
code.WriteFmt(" gUpper = floor(color0 / 8.0);\n"
|
|
" gLower = color0 - gUpper * 8.0;\n");
|
|
|
|
WriteToBitDepth(code, 5, "texSample.r", "ocol0.b");
|
|
code.WriteFmt(" ocol0.b = ocol0.b * 4.0 + gUpper + 128.0;\n");
|
|
WriteToBitDepth(code, 5, "texSample.b", "ocol0.g");
|
|
code.WriteFmt(" ocol0.g = ocol0.g + gLower * 32.0;\n");
|
|
|
|
code.WriteFmt("}} else {{\n");
|
|
|
|
WriteToBitDepth(code, 4, "texSample.r", "ocol0.b");
|
|
WriteToBitDepth(code, 4, "texSample.b", "ocol0.g");
|
|
|
|
WriteToBitDepth(code, 3, "texSample.a", "color0");
|
|
code.WriteFmt("ocol0.b = ocol0.b + color0 * 16.0;\n");
|
|
WriteToBitDepth(code, 4, "texSample.g", "color0");
|
|
code.WriteFmt("ocol0.g = ocol0.g + color0 * 16.0;\n");
|
|
|
|
code.WriteFmt("}}\n");
|
|
|
|
WriteSampleColor(code, "rgba", "texSample", 1, api_type, params);
|
|
|
|
code.WriteFmt("if(texSample.a > 0.878f) {{\n");
|
|
|
|
WriteToBitDepth(code, 5, "texSample.g", "color0");
|
|
code.WriteFmt(" gUpper = floor(color0 / 8.0);\n"
|
|
" gLower = color0 - gUpper * 8.0;\n");
|
|
|
|
WriteToBitDepth(code, 5, "texSample.r", "ocol0.r");
|
|
code.WriteFmt(" ocol0.r = ocol0.r * 4.0 + gUpper + 128.0;\n");
|
|
WriteToBitDepth(code, 5, "texSample.b", "ocol0.a");
|
|
code.WriteFmt(" ocol0.a = ocol0.a + gLower * 32.0;\n");
|
|
|
|
code.WriteFmt("}} else {{\n");
|
|
|
|
WriteToBitDepth(code, 4, "texSample.r", "ocol0.r");
|
|
WriteToBitDepth(code, 4, "texSample.b", "ocol0.a");
|
|
|
|
WriteToBitDepth(code, 3, "texSample.a", "color0");
|
|
code.WriteFmt("ocol0.r = ocol0.r + color0 * 16.0;\n");
|
|
WriteToBitDepth(code, 4, "texSample.g", "color0");
|
|
code.WriteFmt("ocol0.a = ocol0.a + color0 * 16.0;\n");
|
|
|
|
code.WriteFmt("}}\n");
|
|
|
|
code.WriteFmt(" ocol0 = ocol0 / 255.0;\n");
|
|
WriteEncoderEnd(code);
|
|
}
|
|
|
|
static void WriteRGBA8Encoder(ShaderCode& code, APIType api_type, const EFBCopyParams& params)
|
|
{
|
|
WriteSwizzler(code, params, EFBCopyFormat::RGBA8, api_type);
|
|
|
|
code.WriteFmt(" float4 texSample;\n"
|
|
" float4 color0;\n"
|
|
" float4 color1;\n");
|
|
|
|
WriteSampleColor(code, "rgba", "texSample", 0, api_type, params);
|
|
code.WriteFmt(" color0.b = texSample.a;\n"
|
|
" color0.g = texSample.r;\n"
|
|
" color1.b = texSample.g;\n"
|
|
" color1.g = texSample.b;\n");
|
|
|
|
WriteSampleColor(code, "rgba", "texSample", 1, api_type, params);
|
|
code.WriteFmt(" color0.r = texSample.a;\n"
|
|
" color0.a = texSample.r;\n"
|
|
" color1.r = texSample.g;\n"
|
|
" color1.a = texSample.b;\n");
|
|
|
|
code.WriteFmt(" ocol0 = first ? color0 : color1;\n");
|
|
|
|
WriteEncoderEnd(code);
|
|
}
|
|
|
|
static void WriteC4Encoder(ShaderCode& code, std::string_view comp, APIType api_type,
|
|
const EFBCopyParams& params)
|
|
{
|
|
WriteSwizzler(code, params, EFBCopyFormat::R4, api_type);
|
|
code.WriteFmt(" float4 color0;\n"
|
|
" float4 color1;\n");
|
|
|
|
WriteSampleColor(code, comp, "color0.b", 0, api_type, params);
|
|
WriteSampleColor(code, comp, "color1.b", 1, api_type, params);
|
|
WriteSampleColor(code, comp, "color0.g", 2, api_type, params);
|
|
WriteSampleColor(code, comp, "color1.g", 3, api_type, params);
|
|
WriteSampleColor(code, comp, "color0.r", 4, api_type, params);
|
|
WriteSampleColor(code, comp, "color1.r", 5, api_type, params);
|
|
WriteSampleColor(code, comp, "color0.a", 6, api_type, params);
|
|
WriteSampleColor(code, comp, "color1.a", 7, api_type, params);
|
|
|
|
WriteToBitDepth(code, 4, "color0", "color0");
|
|
WriteToBitDepth(code, 4, "color1", "color1");
|
|
|
|
code.WriteFmt(" ocol0 = (color0 * 16.0 + color1) / 255.0;\n");
|
|
WriteEncoderEnd(code);
|
|
}
|
|
|
|
static void WriteC8Encoder(ShaderCode& code, std::string_view comp, APIType api_type,
|
|
const EFBCopyParams& params)
|
|
{
|
|
WriteSwizzler(code, params, EFBCopyFormat::R8, api_type);
|
|
|
|
WriteSampleColor(code, comp, "ocol0.b", 0, api_type, params);
|
|
WriteSampleColor(code, comp, "ocol0.g", 1, api_type, params);
|
|
WriteSampleColor(code, comp, "ocol0.r", 2, api_type, params);
|
|
WriteSampleColor(code, comp, "ocol0.a", 3, api_type, params);
|
|
|
|
WriteEncoderEnd(code);
|
|
}
|
|
|
|
static void WriteCC4Encoder(ShaderCode& code, std::string_view comp, APIType api_type,
|
|
const EFBCopyParams& params)
|
|
{
|
|
WriteSwizzler(code, params, EFBCopyFormat::RA4, api_type);
|
|
code.WriteFmt(" float2 texSample;\n"
|
|
" float4 color0;\n"
|
|
" float4 color1;\n");
|
|
|
|
WriteSampleColor(code, comp, "texSample", 0, api_type, params);
|
|
code.WriteFmt(" color0.b = texSample.x;\n"
|
|
" color1.b = texSample.y;\n");
|
|
|
|
WriteSampleColor(code, comp, "texSample", 1, api_type, params);
|
|
code.WriteFmt(" color0.g = texSample.x;\n"
|
|
" color1.g = texSample.y;\n");
|
|
|
|
WriteSampleColor(code, comp, "texSample", 2, api_type, params);
|
|
code.WriteFmt(" color0.r = texSample.x;\n"
|
|
" color1.r = texSample.y;\n");
|
|
|
|
WriteSampleColor(code, comp, "texSample", 3, api_type, params);
|
|
code.WriteFmt(" color0.a = texSample.x;\n"
|
|
" color1.a = texSample.y;\n");
|
|
|
|
WriteToBitDepth(code, 4, "color0", "color0");
|
|
WriteToBitDepth(code, 4, "color1", "color1");
|
|
|
|
code.WriteFmt(" ocol0 = (color0 * 16.0 + color1) / 255.0;\n");
|
|
WriteEncoderEnd(code);
|
|
}
|
|
|
|
static void WriteCC8Encoder(ShaderCode& code, std::string_view comp, APIType api_type,
|
|
const EFBCopyParams& params)
|
|
{
|
|
WriteSwizzler(code, params, EFBCopyFormat::RA8, api_type);
|
|
|
|
WriteSampleColor(code, comp, "ocol0.bg", 0, api_type, params);
|
|
WriteSampleColor(code, comp, "ocol0.ra", 1, api_type, params);
|
|
|
|
WriteEncoderEnd(code);
|
|
}
|
|
|
|
static void WriteZ8Encoder(ShaderCode& code, std::string_view multiplier, APIType api_type,
|
|
const EFBCopyParams& params)
|
|
{
|
|
WriteSwizzler(code, params, EFBCopyFormat::G8, api_type);
|
|
|
|
code.WriteFmt(" float depth;\n");
|
|
|
|
WriteSampleColor(code, "r", "depth", 0, api_type, params);
|
|
code.WriteFmt("ocol0.b = frac(depth * {});\n", multiplier);
|
|
|
|
WriteSampleColor(code, "r", "depth", 1, api_type, params);
|
|
code.WriteFmt("ocol0.g = frac(depth * {});\n", multiplier);
|
|
|
|
WriteSampleColor(code, "r", "depth", 2, api_type, params);
|
|
code.WriteFmt("ocol0.r = frac(depth * {});\n", multiplier);
|
|
|
|
WriteSampleColor(code, "r", "depth", 3, api_type, params);
|
|
code.WriteFmt("ocol0.a = frac(depth * {});\n", multiplier);
|
|
|
|
WriteEncoderEnd(code);
|
|
}
|
|
|
|
static void WriteZ16Encoder(ShaderCode& code, APIType api_type, const EFBCopyParams& params)
|
|
{
|
|
WriteSwizzler(code, params, EFBCopyFormat::RA8, api_type);
|
|
|
|
code.WriteFmt(" float depth;\n"
|
|
" float3 expanded;\n");
|
|
|
|
// Byte order is reversed
|
|
|
|
WriteSampleColor(code, "r", "depth", 0, api_type, params);
|
|
|
|
code.WriteFmt(" depth *= 16777216.0;\n"
|
|
" expanded.r = floor(depth / (256.0 * 256.0));\n"
|
|
" depth -= expanded.r * 256.0 * 256.0;\n"
|
|
" expanded.g = floor(depth / 256.0);\n");
|
|
|
|
code.WriteFmt(" ocol0.b = expanded.g / 255.0;\n"
|
|
" ocol0.g = expanded.r / 255.0;\n");
|
|
|
|
WriteSampleColor(code, "r", "depth", 1, api_type, params);
|
|
|
|
code.WriteFmt(" depth *= 16777216.0;\n"
|
|
" expanded.r = floor(depth / (256.0 * 256.0));\n"
|
|
" depth -= expanded.r * 256.0 * 256.0;\n"
|
|
" expanded.g = floor(depth / 256.0);\n");
|
|
|
|
code.WriteFmt(" ocol0.r = expanded.g / 255.0;\n"
|
|
" ocol0.a = expanded.r / 255.0;\n");
|
|
|
|
WriteEncoderEnd(code);
|
|
}
|
|
|
|
static void WriteZ16LEncoder(ShaderCode& code, APIType api_type, const EFBCopyParams& params)
|
|
{
|
|
WriteSwizzler(code, params, EFBCopyFormat::GB8, api_type);
|
|
|
|
code.WriteFmt(" float depth;\n"
|
|
" float3 expanded;\n");
|
|
|
|
// Byte order is reversed
|
|
|
|
WriteSampleColor(code, "r", "depth", 0, api_type, params);
|
|
|
|
code.WriteFmt(" depth *= 16777216.0;\n"
|
|
" expanded.r = floor(depth / (256.0 * 256.0));\n"
|
|
" depth -= expanded.r * 256.0 * 256.0;\n"
|
|
" expanded.g = floor(depth / 256.0);\n"
|
|
" depth -= expanded.g * 256.0;\n"
|
|
" expanded.b = depth;\n");
|
|
|
|
code.WriteFmt(" ocol0.b = expanded.b / 255.0;\n"
|
|
" ocol0.g = expanded.g / 255.0;\n");
|
|
|
|
WriteSampleColor(code, "r", "depth", 1, api_type, params);
|
|
|
|
code.WriteFmt(" depth *= 16777216.0;\n"
|
|
" expanded.r = floor(depth / (256.0 * 256.0));\n"
|
|
" depth -= expanded.r * 256.0 * 256.0;\n"
|
|
" expanded.g = floor(depth / 256.0);\n"
|
|
" depth -= expanded.g * 256.0;\n"
|
|
" expanded.b = depth;\n");
|
|
|
|
code.WriteFmt(" ocol0.r = expanded.b / 255.0;\n"
|
|
" ocol0.a = expanded.g / 255.0;\n");
|
|
|
|
WriteEncoderEnd(code);
|
|
}
|
|
|
|
static void WriteZ24Encoder(ShaderCode& code, APIType api_type, const EFBCopyParams& params)
|
|
{
|
|
WriteSwizzler(code, params, EFBCopyFormat::RGBA8, api_type);
|
|
|
|
code.WriteFmt(" float depth0;\n"
|
|
" float depth1;\n"
|
|
" float3 expanded0;\n"
|
|
" float3 expanded1;\n");
|
|
|
|
WriteSampleColor(code, "r", "depth0", 0, api_type, params);
|
|
WriteSampleColor(code, "r", "depth1", 1, api_type, params);
|
|
|
|
for (int i = 0; i < 2; i++)
|
|
{
|
|
code.WriteFmt(" depth{} *= 16777216.0;\n", i);
|
|
|
|
code.WriteFmt(" expanded{}.r = floor(depth{} / (256.0 * 256.0));\n", i, i);
|
|
code.WriteFmt(" depth{} -= expanded{}.r * 256.0 * 256.0;\n", i, i);
|
|
code.WriteFmt(" expanded{}.g = floor(depth{} / 256.0);\n", i, i);
|
|
code.WriteFmt(" depth{} -= expanded{}.g * 256.0;\n", i, i);
|
|
code.WriteFmt(" expanded{}.b = depth{};\n", i, i);
|
|
}
|
|
|
|
code.WriteFmt(" if (!first) {{\n");
|
|
// Upper 16
|
|
code.WriteFmt(" ocol0.b = expanded0.g / 255.0;\n"
|
|
" ocol0.g = expanded0.b / 255.0;\n"
|
|
" ocol0.r = expanded1.g / 255.0;\n"
|
|
" ocol0.a = expanded1.b / 255.0;\n"
|
|
" }} else {{\n");
|
|
// Lower 8
|
|
code.WriteFmt(" ocol0.b = 1.0;\n"
|
|
" ocol0.g = expanded0.r / 255.0;\n"
|
|
" ocol0.r = 1.0;\n"
|
|
" ocol0.a = expanded1.r / 255.0;\n"
|
|
" }}\n");
|
|
|
|
WriteEncoderEnd(code);
|
|
}
|
|
|
|
static void WriteXFBEncoder(ShaderCode& code, APIType api_type, const EFBCopyParams& params)
|
|
{
|
|
WriteSwizzler(code, params, EFBCopyFormat::XFB, api_type);
|
|
|
|
code.WriteFmt("float3 color0, color1;\n");
|
|
WriteSampleColor(code, "rgb", "color0", 0, api_type, params);
|
|
WriteSampleColor(code, "rgb", "color1", 1, api_type, params);
|
|
|
|
// Gamma is only applied to XFB copies.
|
|
code.WriteFmt(" color0 = pow(color0, float3(gamma_rcp, gamma_rcp, gamma_rcp));\n"
|
|
" color1 = pow(color1, float3(gamma_rcp, gamma_rcp, gamma_rcp));\n");
|
|
|
|
// Convert to YUV.
|
|
code.WriteFmt(" const float3 y_const = float3(0.257, 0.504, 0.098);\n"
|
|
" const float3 u_const = float3(-0.148, -0.291, 0.439);\n"
|
|
" const float3 v_const = float3(0.439, -0.368, -0.071);\n"
|
|
" float3 average = (color0 + color1) * 0.5;\n"
|
|
" ocol0.b = dot(color0, y_const) + 0.0625;\n"
|
|
" ocol0.g = dot(average, u_const) + 0.5;\n"
|
|
" ocol0.r = dot(color1, y_const) + 0.0625;\n"
|
|
" ocol0.a = dot(average, v_const) + 0.5;\n");
|
|
|
|
WriteEncoderEnd(code);
|
|
}
|
|
|
|
std::string GenerateEncodingShader(const EFBCopyParams& params, APIType api_type)
|
|
{
|
|
ShaderCode code;
|
|
|
|
switch (params.copy_format)
|
|
{
|
|
case EFBCopyFormat::R4:
|
|
if (params.yuv)
|
|
WriteI4Encoder(code, api_type, params);
|
|
else
|
|
WriteC4Encoder(code, "r", api_type, params);
|
|
break;
|
|
case EFBCopyFormat::RA4:
|
|
if (params.yuv)
|
|
WriteIA4Encoder(code, api_type, params);
|
|
else
|
|
WriteCC4Encoder(code, "ar", api_type, params);
|
|
break;
|
|
case EFBCopyFormat::RA8:
|
|
if (params.yuv)
|
|
WriteIA8Encoder(code, api_type, params);
|
|
else
|
|
WriteCC8Encoder(code, "ar", api_type, params);
|
|
break;
|
|
case EFBCopyFormat::RGB565:
|
|
WriteRGB565Encoder(code, api_type, params);
|
|
break;
|
|
case EFBCopyFormat::RGB5A3:
|
|
WriteRGB5A3Encoder(code, api_type, params);
|
|
break;
|
|
case EFBCopyFormat::RGBA8:
|
|
if (params.depth)
|
|
WriteZ24Encoder(code, api_type, params);
|
|
else
|
|
WriteRGBA8Encoder(code, api_type, params);
|
|
break;
|
|
case EFBCopyFormat::A8:
|
|
WriteC8Encoder(code, "a", api_type, params);
|
|
break;
|
|
case EFBCopyFormat::R8_0x1:
|
|
case EFBCopyFormat::R8:
|
|
if (params.yuv)
|
|
WriteI8Encoder(code, api_type, params);
|
|
else
|
|
WriteC8Encoder(code, "r", api_type, params);
|
|
break;
|
|
case EFBCopyFormat::G8:
|
|
if (params.depth)
|
|
WriteZ8Encoder(code, "256.0", api_type, params); // Z8M
|
|
else
|
|
WriteC8Encoder(code, "g", api_type, params);
|
|
break;
|
|
case EFBCopyFormat::B8:
|
|
if (params.depth)
|
|
WriteZ8Encoder(code, "65536.0", api_type, params); // Z8L
|
|
else
|
|
WriteC8Encoder(code, "b", api_type, params);
|
|
break;
|
|
case EFBCopyFormat::RG8:
|
|
if (params.depth)
|
|
WriteZ16Encoder(code, api_type, params); // Z16H
|
|
else
|
|
WriteCC8Encoder(code, "gr", api_type, params);
|
|
break;
|
|
case EFBCopyFormat::GB8:
|
|
if (params.depth)
|
|
WriteZ16LEncoder(code, api_type, params); // Z16L
|
|
else
|
|
WriteCC8Encoder(code, "bg", api_type, params);
|
|
break;
|
|
case EFBCopyFormat::XFB:
|
|
WriteXFBEncoder(code, api_type, params);
|
|
break;
|
|
default:
|
|
PanicAlert("Invalid EFB Copy Format (0x%X)! (GenerateEncodingShader)",
|
|
static_cast<int>(params.copy_format));
|
|
break;
|
|
}
|
|
|
|
return code.GetBuffer();
|
|
}
|
|
|
|
// NOTE: In these uniforms, a row refers to a row of blocks, not texels.
|
|
static const char decoding_shader_header[] = R"(
|
|
#if defined(PALETTE_FORMAT_IA8) || defined(PALETTE_FORMAT_RGB565) || defined(PALETTE_FORMAT_RGB5A3)
|
|
#define HAS_PALETTE 1
|
|
#endif
|
|
|
|
#ifdef API_D3D
|
|
cbuffer UBO : register(b0) {
|
|
#else
|
|
UBO_BINDING(std140, 1) uniform UBO {
|
|
#endif
|
|
uint2 u_dst_size;
|
|
uint2 u_src_size;
|
|
uint u_src_offset;
|
|
uint u_src_row_stride;
|
|
uint u_palette_offset;
|
|
};
|
|
|
|
#ifdef API_D3D
|
|
|
|
Buffer<uint4> s_input_buffer : register(t0);
|
|
#ifdef HAS_PALETTE
|
|
Buffer<uint4> s_palette_buffer : register(t1);
|
|
#endif
|
|
|
|
RWTexture2DArray<unorm float4> output_image : register(u0);
|
|
|
|
// Helpers for reading/writing.
|
|
#define texelFetch(buffer, pos) buffer.Load(pos)
|
|
#define imageStore(image, coords, value) image[coords] = value
|
|
#define GROUP_MEMORY_BARRIER_WITH_SYNC GroupMemoryBarrierWithGroupSync();
|
|
#define GROUP_SHARED groupshared
|
|
|
|
#define DEFINE_MAIN(lx, ly) \
|
|
[numthreads(lx, ly, 1)] \
|
|
void main(uint3 gl_WorkGroupID : SV_GroupId, \
|
|
uint3 gl_LocalInvocationID : SV_GroupThreadID, \
|
|
uint3 gl_GlobalInvocationID : SV_DispatchThreadID)
|
|
|
|
uint bitfieldExtract(uint val, int off, int size)
|
|
{
|
|
// This built-in function is only support in OpenGL 4.0+ and ES 3.1+\n"
|
|
// Microsoft's HLSL compiler automatically optimises this to a bitfield extract instruction.
|
|
uint mask = uint((1 << size) - 1);
|
|
return uint(val >> off) & mask;
|
|
}
|
|
|
|
#else
|
|
|
|
TEXEL_BUFFER_BINDING(0) uniform usamplerBuffer s_input_buffer;
|
|
#ifdef HAS_PALETTE
|
|
TEXEL_BUFFER_BINDING(1) uniform usamplerBuffer s_palette_buffer;
|
|
#endif
|
|
IMAGE_BINDING(rgba8, 0) uniform writeonly image2DArray output_image;
|
|
|
|
#define GROUP_MEMORY_BARRIER_WITH_SYNC memoryBarrierShared(); barrier();
|
|
#define GROUP_SHARED shared
|
|
|
|
#define DEFINE_MAIN(lx, ly) \
|
|
layout(local_size_x = lx, local_size_y = ly) in; \
|
|
void main()
|
|
|
|
#endif
|
|
|
|
uint Swap16(uint v)
|
|
{
|
|
// Convert BE to LE.
|
|
return ((v >> 8) | (v << 8)) & 0xFFFFu;
|
|
}
|
|
|
|
uint Convert3To8(uint v)
|
|
{
|
|
// Swizzle bits: 00000123 -> 12312312
|
|
return (v << 5) | (v << 2) | (v >> 1);
|
|
}
|
|
uint Convert4To8(uint v)
|
|
{
|
|
// Swizzle bits: 00001234 -> 12341234
|
|
return (v << 4) | v;
|
|
}
|
|
uint Convert5To8(uint v)
|
|
{
|
|
// Swizzle bits: 00012345 -> 12345123
|
|
return (v << 3) | (v >> 2);
|
|
}
|
|
uint Convert6To8(uint v)
|
|
{
|
|
// Swizzle bits: 00123456 -> 12345612
|
|
return (v << 2) | (v >> 4);
|
|
}
|
|
|
|
uint GetTiledTexelOffset(uint2 block_size, uint2 coords)
|
|
{
|
|
uint2 block = coords / block_size;
|
|
uint2 offset = coords % block_size;
|
|
uint buffer_pos = u_src_offset;
|
|
buffer_pos += block.y * u_src_row_stride;
|
|
buffer_pos += block.x * (block_size.x * block_size.y);
|
|
buffer_pos += offset.y * block_size.x;
|
|
buffer_pos += offset.x;
|
|
return buffer_pos;
|
|
}
|
|
|
|
uint4 GetPaletteColor(uint index)
|
|
{
|
|
// Fetch and swap BE to LE.
|
|
uint val = Swap16(texelFetch(s_palette_buffer, int(u_palette_offset + index)).x);
|
|
|
|
uint4 color;
|
|
#if defined(PALETTE_FORMAT_IA8)
|
|
uint a = bitfieldExtract(val, 8, 8);
|
|
uint i = bitfieldExtract(val, 0, 8);
|
|
color = uint4(i, i, i, a);
|
|
#elif defined(PALETTE_FORMAT_RGB565)
|
|
color.x = Convert5To8(bitfieldExtract(val, 11, 5));
|
|
color.y = Convert6To8(bitfieldExtract(val, 5, 6));
|
|
color.z = Convert5To8(bitfieldExtract(val, 0, 5));
|
|
color.a = 255u;
|
|
|
|
#elif defined(PALETTE_FORMAT_RGB5A3)
|
|
if ((val & 0x8000u) != 0u)
|
|
{
|
|
color.x = Convert5To8(bitfieldExtract(val, 10, 5));
|
|
color.y = Convert5To8(bitfieldExtract(val, 5, 5));
|
|
color.z = Convert5To8(bitfieldExtract(val, 0, 5));
|
|
color.a = 255u;
|
|
}
|
|
else
|
|
{
|
|
color.a = Convert3To8(bitfieldExtract(val, 12, 3));
|
|
color.r = Convert4To8(bitfieldExtract(val, 8, 4));
|
|
color.g = Convert4To8(bitfieldExtract(val, 4, 4));
|
|
color.b = Convert4To8(bitfieldExtract(val, 0, 4));
|
|
}
|
|
#else
|
|
// Not used.
|
|
color = uint4(0, 0, 0, 0);
|
|
#endif
|
|
|
|
return color;
|
|
}
|
|
|
|
float4 GetPaletteColorNormalized(uint index)
|
|
{
|
|
uint4 color = GetPaletteColor(index);
|
|
return float4(color) / 255.0;
|
|
}
|
|
|
|
)";
|
|
|
|
static const std::map<TextureFormat, DecodingShaderInfo> s_decoding_shader_info{
|
|
{TextureFormat::I4,
|
|
{TEXEL_BUFFER_FORMAT_R8_UINT, 0, 8, 8, false,
|
|
R"(
|
|
DEFINE_MAIN(8, 8)
|
|
{
|
|
uint2 coords = gl_GlobalInvocationID.xy;
|
|
|
|
// Tiled in 8x8 blocks, 4 bits per pixel
|
|
// We need to do the tiling manually here because the texel size is smaller than
|
|
// the size of the buffer elements.
|
|
uint2 block = coords.xy / 8u;
|
|
uint2 offset = coords.xy % 8u;
|
|
uint buffer_pos = u_src_offset;
|
|
buffer_pos += block.y * u_src_row_stride;
|
|
buffer_pos += block.x * 32u;
|
|
buffer_pos += offset.y * 4u;
|
|
buffer_pos += offset.x / 2u;
|
|
|
|
// Select high nibble for odd texels, low for even.
|
|
uint val = texelFetch(s_input_buffer, int(buffer_pos)).x;
|
|
uint i;
|
|
if ((coords.x & 1u) == 0u)
|
|
i = Convert4To8((val >> 4));
|
|
else
|
|
i = Convert4To8((val & 0x0Fu));
|
|
|
|
uint4 color = uint4(i, i, i, i);
|
|
float4 norm_color = float4(color) / 255.0;
|
|
|
|
imageStore(output_image, int3(int2(coords), 0), norm_color);
|
|
}
|
|
|
|
)"}},
|
|
{TextureFormat::IA4,
|
|
{TEXEL_BUFFER_FORMAT_R8_UINT, 0, 8, 8, false,
|
|
R"(
|
|
DEFINE_MAIN(8, 8)
|
|
{
|
|
uint2 coords = gl_GlobalInvocationID.xy;
|
|
|
|
// Tiled in 8x4 blocks, 8 bits per pixel
|
|
uint buffer_pos = GetTiledTexelOffset(uint2(8u, 4u), coords);
|
|
uint val = texelFetch(s_input_buffer, int(buffer_pos)).x;
|
|
uint i = Convert4To8((val & 0x0Fu));
|
|
uint a = Convert4To8((val >> 4));
|
|
uint4 color = uint4(i, i, i, a);
|
|
float4 norm_color = float4(color) / 255.0;
|
|
|
|
imageStore(output_image, int3(int2(coords), 0), norm_color);
|
|
}
|
|
)"}},
|
|
{TextureFormat::I8,
|
|
{TEXEL_BUFFER_FORMAT_R8_UINT, 0, 8, 8, false,
|
|
R"(
|
|
DEFINE_MAIN(8, 8)
|
|
{
|
|
uint2 coords = gl_GlobalInvocationID.xy;
|
|
|
|
// Tiled in 8x4 blocks, 8 bits per pixel
|
|
uint buffer_pos = GetTiledTexelOffset(uint2(8u, 4u), coords);
|
|
uint i = texelFetch(s_input_buffer, int(buffer_pos)).x;
|
|
uint4 color = uint4(i, i, i, i);
|
|
float4 norm_color = float4(color) / 255.0;
|
|
|
|
imageStore(output_image, int3(int2(coords), 0), norm_color);
|
|
}
|
|
)"}},
|
|
{TextureFormat::IA8,
|
|
{TEXEL_BUFFER_FORMAT_R16_UINT, 0, 8, 8, false,
|
|
R"(
|
|
DEFINE_MAIN(8, 8)
|
|
{
|
|
uint2 coords = gl_GlobalInvocationID.xy;
|
|
|
|
// Tiled in 4x4 blocks, 16 bits per pixel
|
|
uint buffer_pos = GetTiledTexelOffset(uint2(4u, 4u), coords);
|
|
uint val = texelFetch(s_input_buffer, int(buffer_pos)).x;
|
|
uint a = (val & 0xFFu);
|
|
uint i = (val >> 8);
|
|
uint4 color = uint4(i, i, i, a);
|
|
float4 norm_color = float4(color) / 255.0;
|
|
imageStore(output_image, int3(int2(coords), 0), norm_color);
|
|
}
|
|
)"}},
|
|
{TextureFormat::RGB565,
|
|
{TEXEL_BUFFER_FORMAT_R16_UINT, 0, 8, 8, false,
|
|
R"(
|
|
DEFINE_MAIN(8, 8)
|
|
{
|
|
uint2 coords = gl_GlobalInvocationID.xy;
|
|
|
|
// Tiled in 4x4 blocks
|
|
uint buffer_pos = GetTiledTexelOffset(uint2(4u, 4u), coords);
|
|
uint val = Swap16(texelFetch(s_input_buffer, int(buffer_pos)).x);
|
|
|
|
uint4 color;
|
|
color.x = Convert5To8(bitfieldExtract(val, 11, 5));
|
|
color.y = Convert6To8(bitfieldExtract(val, 5, 6));
|
|
color.z = Convert5To8(bitfieldExtract(val, 0, 5));
|
|
color.a = 255u;
|
|
|
|
float4 norm_color = float4(color) / 255.0;
|
|
imageStore(output_image, int3(int2(coords), 0), norm_color);
|
|
}
|
|
|
|
)"}},
|
|
{TextureFormat::RGB5A3,
|
|
{TEXEL_BUFFER_FORMAT_R16_UINT, 0, 8, 8, false,
|
|
R"(
|
|
DEFINE_MAIN(8, 8)
|
|
{
|
|
uint2 coords = gl_GlobalInvocationID.xy;
|
|
|
|
// Tiled in 4x4 blocks
|
|
uint buffer_pos = GetTiledTexelOffset(uint2(4u, 4u), coords);
|
|
uint val = Swap16(texelFetch(s_input_buffer, int(buffer_pos)).x);
|
|
|
|
uint4 color;
|
|
if ((val & 0x8000u) != 0u)
|
|
{
|
|
color.x = Convert5To8(bitfieldExtract(val, 10, 5));
|
|
color.y = Convert5To8(bitfieldExtract(val, 5, 5));
|
|
color.z = Convert5To8(bitfieldExtract(val, 0, 5));
|
|
color.a = 255u;
|
|
}
|
|
else
|
|
{
|
|
color.a = Convert3To8(bitfieldExtract(val, 12, 3));
|
|
color.r = Convert4To8(bitfieldExtract(val, 8, 4));
|
|
color.g = Convert4To8(bitfieldExtract(val, 4, 4));
|
|
color.b = Convert4To8(bitfieldExtract(val, 0, 4));
|
|
}
|
|
|
|
float4 norm_color = float4(color) / 255.0;
|
|
imageStore(output_image, int3(int2(coords), 0), norm_color);
|
|
}
|
|
|
|
)"}},
|
|
{TextureFormat::RGBA8,
|
|
{TEXEL_BUFFER_FORMAT_R16_UINT, 0, 8, 8, false,
|
|
R"(
|
|
DEFINE_MAIN(8, 8)
|
|
{
|
|
uint2 coords = gl_GlobalInvocationID.xy;
|
|
|
|
// Tiled in 4x4 blocks
|
|
// We can't use the normal calculation function, as these are packed as the AR channels
|
|
// for the entire block, then the GB channels afterwards.
|
|
uint2 block = coords.xy / 4u;
|
|
uint2 offset = coords.xy % 4u;
|
|
uint buffer_pos = u_src_offset;
|
|
|
|
// Our buffer has 16-bit elements, so the offsets here are half what they would be in bytes.
|
|
buffer_pos += block.y * u_src_row_stride;
|
|
buffer_pos += block.x * 32u;
|
|
buffer_pos += offset.y * 4u;
|
|
buffer_pos += offset.x;
|
|
|
|
// The two GB channels follow after the block's AR channels.
|
|
uint val1 = texelFetch(s_input_buffer, int(buffer_pos + 0u)).x;
|
|
uint val2 = texelFetch(s_input_buffer, int(buffer_pos + 16u)).x;
|
|
|
|
uint4 color;
|
|
color.a = (val1 & 0xFFu);
|
|
color.r = (val1 >> 8);
|
|
color.g = (val2 & 0xFFu);
|
|
color.b = (val2 >> 8);
|
|
|
|
float4 norm_color = float4(color) / 255.0;
|
|
imageStore(output_image, int3(int2(coords), 0), norm_color);
|
|
}
|
|
)"}},
|
|
{TextureFormat::CMPR,
|
|
{TEXEL_BUFFER_FORMAT_R32G32_UINT, 0, 64, 1, true,
|
|
R"(
|
|
// In the compute version of this decoder, we flatten the blocks to a one-dimension array.
|
|
// Each group is subdivided into 16, and the first thread in each group fetches the DXT data.
|
|
// All threads then calculate the possible colors for the block and write to the output image.
|
|
|
|
#define GROUP_SIZE 64u
|
|
#define BLOCK_SIZE_X 4u
|
|
#define BLOCK_SIZE_Y 4u
|
|
#define BLOCK_SIZE (BLOCK_SIZE_X * BLOCK_SIZE_Y)
|
|
#define BLOCKS_PER_GROUP (GROUP_SIZE / BLOCK_SIZE)
|
|
|
|
uint DXTBlend(uint v1, uint v2)
|
|
{
|
|
// 3/8 blend, which is close to 1/3
|
|
return ((v1 * 3u + v2 * 5u) >> 3);
|
|
}
|
|
|
|
GROUP_SHARED uint2 shared_temp[BLOCKS_PER_GROUP];
|
|
|
|
DEFINE_MAIN(GROUP_SIZE, 8)
|
|
{
|
|
uint local_thread_id = gl_LocalInvocationID.x;
|
|
uint block_in_group = local_thread_id / BLOCK_SIZE;
|
|
uint thread_in_block = local_thread_id % BLOCK_SIZE;
|
|
uint block_index = gl_WorkGroupID.x * BLOCKS_PER_GROUP + block_in_group;
|
|
|
|
// Annoyingly, we can't precalculate this as a uniform because the DXT block size differs
|
|
// from the block size of the overall texture (4 vs 8). We can however use a multiply and
|
|
// subtraction to avoid the modulo for calculating the block's X coordinate.
|
|
uint blocks_wide = u_src_size.x / BLOCK_SIZE_X;
|
|
uint2 block_coords;
|
|
block_coords.y = block_index / blocks_wide;
|
|
block_coords.x = block_index - (block_coords.y * blocks_wide);
|
|
|
|
// Only the first thread for each block reads from the texel buffer.
|
|
if (thread_in_block == 0u)
|
|
{
|
|
// Calculate tiled block coordinates.
|
|
uint2 tile_block_coords = block_coords / 2u;
|
|
uint2 subtile_block_coords = block_coords % 2u;
|
|
uint buffer_pos = u_src_offset;
|
|
buffer_pos += tile_block_coords.y * u_src_row_stride;
|
|
buffer_pos += tile_block_coords.x * 4u;
|
|
buffer_pos += subtile_block_coords.y * 2u;
|
|
buffer_pos += subtile_block_coords.x;
|
|
|
|
// Read the entire DXT block to shared memory.
|
|
uint2 raw_data = texelFetch(s_input_buffer, int(buffer_pos)).xy;
|
|
shared_temp[block_in_group] = raw_data;
|
|
}
|
|
|
|
// Ensure store is completed before the remaining threads in the block continue.
|
|
GROUP_MEMORY_BARRIER_WITH_SYNC;
|
|
|
|
// Unpack colors and swap BE to LE.
|
|
uint2 raw_data = shared_temp[block_in_group];
|
|
uint swapped = ((raw_data.x & 0xFF00FF00u) >> 8) | ((raw_data.x & 0x00FF00FFu) << 8);
|
|
uint c1 = swapped & 0xFFFFu;
|
|
uint c2 = swapped >> 16;
|
|
|
|
// Expand 5/6 bit channels to 8-bits per channel.
|
|
uint blue1 = Convert5To8(bitfieldExtract(c1, 0, 5));
|
|
uint blue2 = Convert5To8(bitfieldExtract(c2, 0, 5));
|
|
uint green1 = Convert6To8(bitfieldExtract(c1, 5, 6));
|
|
uint green2 = Convert6To8(bitfieldExtract(c2, 5, 6));
|
|
uint red1 = Convert5To8(bitfieldExtract(c1, 11, 5));
|
|
uint red2 = Convert5To8(bitfieldExtract(c2, 11, 5));
|
|
|
|
// Determine the four colors the block can use.
|
|
// It's quicker to just precalculate all four colors rather than branching on the index.
|
|
// NOTE: These must be masked with 0xFF. This is done at the normalization stage below.
|
|
uint4 color0, color1, color2, color3;
|
|
color0 = uint4(red1, green1, blue1, 255u);
|
|
color1 = uint4(red2, green2, blue2, 255u);
|
|
if (c1 > c2)
|
|
{
|
|
color2 = uint4(DXTBlend(red2, red1), DXTBlend(green2, green1), DXTBlend(blue2, blue1), 255u);
|
|
color3 = uint4(DXTBlend(red1, red2), DXTBlend(green1, green2), DXTBlend(blue1, blue2), 255u);
|
|
}
|
|
else
|
|
{
|
|
color2 = uint4((red1 + red2) / 2u, (green1 + green2) / 2u, (blue1 + blue2) / 2u, 255u);
|
|
color3 = uint4((red1 + red2) / 2u, (green1 + green2) / 2u, (blue1 + blue2) / 2u, 0u);
|
|
}
|
|
|
|
// Calculate the texel coordinates that we will write to.
|
|
// The divides/modulo here should be turned into a shift/binary AND.
|
|
uint local_y = thread_in_block / BLOCK_SIZE_X;
|
|
uint local_x = thread_in_block % BLOCK_SIZE_X;
|
|
uint global_x = block_coords.x * BLOCK_SIZE_X + local_x;
|
|
uint global_y = block_coords.y * BLOCK_SIZE_Y + local_y;
|
|
|
|
// Use the coordinates within the block to shift the 32-bit value containing
|
|
// all 16 indices to a single 2-bit index.
|
|
uint index = bitfieldExtract(raw_data.y, int((local_y * 8u) + (6u - local_x * 2u)), 2);
|
|
|
|
// Select the un-normalized color from the precalculated color array.
|
|
// Using a switch statement here removes the need for dynamic indexing of an array.
|
|
uint4 color;
|
|
switch (index)
|
|
{
|
|
case 0u: color = color0; break;
|
|
case 1u: color = color1; break;
|
|
case 2u: color = color2; break;
|
|
case 3u: color = color3; break;
|
|
default: color = color0; break;
|
|
}
|
|
|
|
// Normalize and write to the output image.
|
|
float4 norm_color = float4(color & 0xFFu) / 255.0;
|
|
imageStore(output_image, int3(int2(uint2(global_x, global_y)), 0), norm_color);
|
|
}
|
|
)"}},
|
|
{TextureFormat::C4,
|
|
{TEXEL_BUFFER_FORMAT_R8_UINT, static_cast<u32>(TexDecoder_GetPaletteSize(TextureFormat::C4)),
|
|
8, 8, false,
|
|
R"(
|
|
DEFINE_MAIN(8, 8)
|
|
{
|
|
uint2 coords = gl_GlobalInvocationID.xy;
|
|
|
|
// Tiled in 8x8 blocks, 4 bits per pixel
|
|
// We need to do the tiling manually here because the texel size is smaller than
|
|
// the size of the buffer elements.
|
|
uint2 block = coords.xy / 8u;
|
|
uint2 offset = coords.xy % 8u;
|
|
uint buffer_pos = u_src_offset;
|
|
buffer_pos += block.y * u_src_row_stride;
|
|
buffer_pos += block.x * 32u;
|
|
buffer_pos += offset.y * 4u;
|
|
buffer_pos += offset.x / 2u;
|
|
|
|
// Select high nibble for odd texels, low for even.
|
|
uint val = texelFetch(s_input_buffer, int(buffer_pos)).x;
|
|
uint index = ((coords.x & 1u) == 0u) ? (val >> 4) : (val & 0x0Fu);
|
|
float4 norm_color = GetPaletteColorNormalized(index);
|
|
imageStore(output_image, int3(int2(coords), 0), norm_color);
|
|
}
|
|
|
|
)"}},
|
|
{TextureFormat::C8,
|
|
{TEXEL_BUFFER_FORMAT_R8_UINT, static_cast<u32>(TexDecoder_GetPaletteSize(TextureFormat::C8)),
|
|
8, 8, false,
|
|
R"(
|
|
DEFINE_MAIN(8, 8)
|
|
{
|
|
uint2 coords = gl_GlobalInvocationID.xy;
|
|
|
|
// Tiled in 8x4 blocks, 8 bits per pixel
|
|
uint buffer_pos = GetTiledTexelOffset(uint2(8u, 4u), coords);
|
|
uint index = texelFetch(s_input_buffer, int(buffer_pos)).x;
|
|
float4 norm_color = GetPaletteColorNormalized(index);
|
|
imageStore(output_image, int3(int2(coords), 0), norm_color);
|
|
}
|
|
)"}},
|
|
{TextureFormat::C14X2,
|
|
{TEXEL_BUFFER_FORMAT_R16_UINT,
|
|
static_cast<u32>(TexDecoder_GetPaletteSize(TextureFormat::C14X2)), 8, 8, false,
|
|
R"(
|
|
DEFINE_MAIN(8, 8)
|
|
{
|
|
uint2 coords = gl_GlobalInvocationID.xy;
|
|
|
|
// Tiled in 4x4 blocks, 16 bits per pixel
|
|
uint buffer_pos = GetTiledTexelOffset(uint2(4u, 4u), coords);
|
|
uint index = Swap16(texelFetch(s_input_buffer, int(buffer_pos)).x) & 0x3FFFu;
|
|
float4 norm_color = GetPaletteColorNormalized(index);
|
|
imageStore(output_image, int3(int2(coords), 0), norm_color);
|
|
}
|
|
)"}},
|
|
|
|
// We do the inverse BT.601 conversion for YCbCr to RGB
|
|
// http://www.equasys.de/colorconversion.html#YCbCr-RGBColorFormatConversion
|
|
{TextureFormat::XFB,
|
|
{TEXEL_BUFFER_FORMAT_RGBA8_UINT, 0, 8, 8, false,
|
|
R"(
|
|
DEFINE_MAIN(8, 8)
|
|
{
|
|
uint2 uv = gl_GlobalInvocationID.xy;
|
|
int buffer_pos = int(u_src_offset + (uv.y * u_src_row_stride) + (uv.x / 2u));
|
|
float4 yuyv = float4(texelFetch(s_input_buffer, buffer_pos));
|
|
|
|
float y = (uv.x & 1u) != 0u ? yuyv.b : yuyv.r;
|
|
|
|
float yComp = 1.164 * (y - 16.0);
|
|
float uComp = yuyv.g - 128.0;
|
|
float vComp = yuyv.a - 128.0;
|
|
|
|
float4 rgb = float4(yComp + (1.596 * vComp),
|
|
yComp - (0.813 * vComp) - (0.391 * uComp),
|
|
yComp + (2.018 * uComp),
|
|
255.0);
|
|
float4 rgba_norm = rgb / 255.0;
|
|
imageStore(output_image, int3(int2(uv), 0), rgba_norm);
|
|
}
|
|
)"}}};
|
|
|
|
const DecodingShaderInfo* GetDecodingShaderInfo(TextureFormat format)
|
|
{
|
|
auto iter = s_decoding_shader_info.find(format);
|
|
return iter != s_decoding_shader_info.end() ? &iter->second : nullptr;
|
|
}
|
|
|
|
std::pair<u32, u32> GetDispatchCount(const DecodingShaderInfo* info, u32 width, u32 height)
|
|
{
|
|
// Flatten to a single dimension?
|
|
if (info->group_flatten)
|
|
return {(width * height + (info->group_size_x - 1)) / info->group_size_x, 1};
|
|
|
|
return {(width + (info->group_size_x - 1)) / info->group_size_x,
|
|
(height + (info->group_size_y - 1)) / info->group_size_y};
|
|
}
|
|
|
|
std::string GenerateDecodingShader(TextureFormat format, TLUTFormat palette_format,
|
|
APIType api_type)
|
|
{
|
|
const DecodingShaderInfo* info = GetDecodingShaderInfo(format);
|
|
if (!info)
|
|
return "";
|
|
|
|
std::ostringstream ss;
|
|
switch (palette_format)
|
|
{
|
|
case TLUTFormat::IA8:
|
|
ss << "#define PALETTE_FORMAT_IA8 1\n";
|
|
break;
|
|
case TLUTFormat::RGB565:
|
|
ss << "#define PALETTE_FORMAT_RGB565 1\n";
|
|
break;
|
|
case TLUTFormat::RGB5A3:
|
|
ss << "#define PALETTE_FORMAT_RGB5A3 1\n";
|
|
break;
|
|
}
|
|
|
|
ss << decoding_shader_header;
|
|
ss << info->shader_body;
|
|
|
|
return ss.str();
|
|
}
|
|
|
|
std::string GeneratePaletteConversionShader(TLUTFormat palette_format, APIType api_type)
|
|
{
|
|
std::ostringstream ss;
|
|
|
|
ss << R"(
|
|
int Convert3To8(int v)
|
|
{
|
|
// Swizzle bits: 00000123 -> 12312312
|
|
return (v << 5) | (v << 2) | (v >> 1);
|
|
}
|
|
int Convert4To8(int v)
|
|
{
|
|
// Swizzle bits: 00001234 -> 12341234
|
|
return (v << 4) | v;
|
|
}
|
|
int Convert5To8(int v)
|
|
{
|
|
// Swizzle bits: 00012345 -> 12345123
|
|
return (v << 3) | (v >> 2);
|
|
}
|
|
int Convert6To8(int v)
|
|
{
|
|
// Swizzle bits: 00123456 -> 12345612
|
|
return (v << 2) | (v >> 4);
|
|
})";
|
|
|
|
switch (palette_format)
|
|
{
|
|
case TLUTFormat::IA8:
|
|
ss << R"(
|
|
float4 DecodePixel(int val)
|
|
{
|
|
int i = val & 0xFF;
|
|
int a = val >> 8;
|
|
return float4(i, i, i, a) / 255.0;
|
|
})";
|
|
break;
|
|
|
|
case TLUTFormat::RGB565:
|
|
ss << R"(
|
|
float4 DecodePixel(int val)
|
|
{
|
|
int r, g, b, a;
|
|
r = Convert5To8((val >> 11) & 0x1f);
|
|
g = Convert6To8((val >> 5) & 0x3f);
|
|
b = Convert5To8((val) & 0x1f);
|
|
a = 0xFF;
|
|
return float4(r, g, b, a) / 255.0;
|
|
})";
|
|
break;
|
|
|
|
case TLUTFormat::RGB5A3:
|
|
ss << R"(
|
|
float4 DecodePixel(int val)
|
|
{
|
|
int r,g,b,a;
|
|
if ((val&0x8000) > 0)
|
|
{
|
|
r=Convert5To8((val>>10) & 0x1f);
|
|
g=Convert5To8((val>>5 ) & 0x1f);
|
|
b=Convert5To8((val ) & 0x1f);
|
|
a=0xFF;
|
|
}
|
|
else
|
|
{
|
|
a=Convert3To8((val>>12) & 0x7);
|
|
r=Convert4To8((val>>8 ) & 0xf);
|
|
g=Convert4To8((val>>4 ) & 0xf);
|
|
b=Convert4To8((val ) & 0xf);
|
|
}
|
|
return float4(r, g, b, a) / 255.0;
|
|
})";
|
|
break;
|
|
|
|
default:
|
|
PanicAlert("Unknown format");
|
|
break;
|
|
}
|
|
|
|
ss << "\n";
|
|
|
|
if (api_type == APIType::D3D)
|
|
{
|
|
ss << "Buffer<uint> tex0 : register(t0);\n";
|
|
ss << "Texture2DArray tex1 : register(t1);\n";
|
|
ss << "SamplerState samp1 : register(s1);\n";
|
|
ss << "cbuffer PSBlock : register(b0) {\n";
|
|
}
|
|
else
|
|
{
|
|
ss << "TEXEL_BUFFER_BINDING(0) uniform usamplerBuffer samp0;\n";
|
|
ss << "SAMPLER_BINDING(1) uniform sampler2DArray samp1;\n";
|
|
ss << "UBO_BINDING(std140, 1) uniform PSBlock {\n";
|
|
}
|
|
|
|
ss << " float multiplier;\n";
|
|
ss << " int texel_buffer_offset;\n";
|
|
ss << "};\n";
|
|
|
|
if (api_type == APIType::D3D)
|
|
{
|
|
ss << "void main(in float3 v_tex0 : TEXCOORD0, out float4 ocol0 : SV_Target) {\n";
|
|
ss << " int src = int(round(tex1.Sample(samp1, v_tex0).r * multiplier));\n";
|
|
ss << " src = int(tex0.Load(src + texel_buffer_offset).r);\n";
|
|
}
|
|
else
|
|
{
|
|
if (g_ActiveConfig.backend_info.bSupportsGeometryShaders)
|
|
{
|
|
ss << "VARYING_LOCATION(0) in VertexData {\n";
|
|
ss << " float3 v_tex0;\n";
|
|
ss << "};\n";
|
|
}
|
|
else
|
|
{
|
|
ss << "VARYING_LOCATION(0) in float3 v_tex0;\n";
|
|
}
|
|
ss << "FRAGMENT_OUTPUT_LOCATION(0) out float4 ocol0;\n";
|
|
ss << "void main() {\n";
|
|
ss << " float3 coords = v_tex0;\n";
|
|
ss << " int src = int(round(texture(samp1, coords).r * multiplier));\n";
|
|
ss << " src = int(texelFetch(samp0, src + texel_buffer_offset).r);\n";
|
|
}
|
|
|
|
ss << " src = ((src << 8) & 0xFF00) | (src >> 8);\n";
|
|
ss << " ocol0 = DecodePixel(src);\n";
|
|
ss << "}\n";
|
|
|
|
return ss.str();
|
|
}
|
|
|
|
} // namespace TextureConversionShaderTiled
|