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a14c88ba67
Yellow squiggly lines begone! Done automatically on .cpp files through `run-clang-tidy`, with manual corrections to the mistakes. If an import is directly used, but is technically unnecessary since it's recursively imported by something else, it is *not* removed. The tool doesn't touch .h files, so I did some of them by hand while fixing errors due to old recursive imports. Not everything is removed, but the cleanup should be substantial enough. Because this done on Linux, code that isn't used on it is mostly untouched. (Hopefully no open PR is depending on these imports...)
262 lines
9.0 KiB
C++
262 lines
9.0 KiB
C++
// Copyright 2017 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "VideoCommon/TextureConverterShaderGen.h"
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#include "Common/CommonTypes.h"
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#include "VideoCommon/BPMemory.h"
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#include "VideoCommon/TextureCacheBase.h"
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#include "VideoCommon/VideoCommon.h"
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#include "VideoCommon/VideoConfig.h"
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namespace TextureConversionShaderGen
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{
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TCShaderUid GetShaderUid(EFBCopyFormat dst_format, bool is_depth_copy, bool is_intensity,
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bool scale_by_half, float gamma_rcp,
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const std::array<u32, 3>& filter_coefficients)
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{
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TCShaderUid out;
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UidData* const uid_data = out.GetUidData();
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if (g_ActiveConfig.bForceTrueColor)
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{
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// Increase the precision of EFB copies where it's likely to be safe.
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switch (dst_format)
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{
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case EFBCopyFormat::RGB565:
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// HACK: XFB is RGB8.
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// Don't blindly do this in other places though,
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// the enum value is used to identify XFB copies.
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// The important thing here is that we need alpha = 1.
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dst_format = EFBCopyFormat::XFB;
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break;
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case EFBCopyFormat::RGB5A3:
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dst_format = EFBCopyFormat::RGBA8;
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break;
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default:
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// Let's not touch the other formats for now, seems risky.
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break;
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}
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}
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uid_data->dst_format = dst_format;
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uid_data->efb_has_alpha = bpmem.zcontrol.pixel_format == PixelFormat::RGBA6_Z24;
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uid_data->is_depth_copy = is_depth_copy;
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uid_data->is_intensity = is_intensity;
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uid_data->scale_by_half = scale_by_half;
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uid_data->all_copy_filter_coefs_needed =
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TextureCacheBase::AllCopyFilterCoefsNeeded(filter_coefficients);
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uid_data->copy_filter_can_overflow = TextureCacheBase::CopyFilterCanOverflow(filter_coefficients);
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// If the gamma is needed, then include that too.
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uid_data->apply_gamma = gamma_rcp != 1.0f;
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return out;
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}
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static void WriteHeader(APIType api_type, ShaderCode& out)
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{
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out.Write("UBO_BINDING(std140, 1) uniform PSBlock {{\n"
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" float2 src_offset, src_size;\n"
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" uint3 filter_coefficients;\n"
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" float gamma_rcp;\n"
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" float2 clamp_tb;\n"
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" float pixel_height;\n"
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"}};\n");
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}
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ShaderCode GenerateVertexShader(APIType api_type)
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{
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ShaderCode out;
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WriteHeader(api_type, out);
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if (g_backend_info.bSupportsGeometryShaders)
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{
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out.Write("VARYING_LOCATION(0) out 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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out.Write("VARYING_LOCATION(0) out float3 v_tex0;\n");
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}
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out.Write("#define id gl_VertexID\n"
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"#define opos gl_Position\n"
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"void main() {{\n");
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out.Write(" v_tex0 = float3(float((id << 1) & 2), float(id & 2), 0.0f);\n");
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out.Write(
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" opos = float4(v_tex0.xy * float2(2.0f, -2.0f) + float2(-1.0f, 1.0f), 0.0f, 1.0f);\n");
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out.Write(" v_tex0 = float3(src_offset + (src_size * v_tex0.xy), 0.0f);\n");
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// NDC space is flipped in Vulkan
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if (api_type == APIType::Vulkan)
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out.Write(" opos.y = -opos.y;\n");
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out.Write("}}\n");
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return out;
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}
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ShaderCode GeneratePixelShader(APIType api_type, const UidData* uid_data)
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{
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const bool mono_depth = uid_data->is_depth_copy && g_ActiveConfig.bStereoEFBMonoDepth;
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ShaderCode out;
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WriteHeader(api_type, out);
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out.Write("SAMPLER_BINDING(0) uniform sampler2DArray samp0;\n");
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out.Write("uint4 SampleEFB(float3 uv, float y_offset) {{\n"
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" float4 tex_sample = texture(samp0, float3(uv.x, clamp(uv.y + (y_offset * "
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"pixel_height), clamp_tb.x, clamp_tb.y), {}));\n",
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mono_depth ? "0.0" : "uv.z");
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if (uid_data->is_depth_copy)
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{
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if (!g_backend_info.bSupportsReversedDepthRange)
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out.Write(" tex_sample.x = 1.0 - tex_sample.x;\n");
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out.Write(" uint depth = uint(tex_sample.x * 16777216.0);\n"
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" return uint4((depth >> 16) & 255u, (depth >> 8) & 255u, depth & 255u, 255u);\n"
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"}}\n");
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}
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else
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{
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out.Write(" return uint4(tex_sample * 255.0);\n"
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"}}\n");
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}
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if (g_backend_info.bSupportsGeometryShaders)
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{
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out.Write("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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out.Write("VARYING_LOCATION(0) in vec3 v_tex0;\n");
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}
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out.Write("FRAGMENT_OUTPUT_LOCATION(0) out vec4 ocol0;\n"
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"void main()\n{{\n");
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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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if (uid_data->all_copy_filter_coefs_needed)
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{
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out.Write(" uint4 prev_row = SampleEFB(v_tex0, -1.0f);\n"
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" uint4 current_row = SampleEFB(v_tex0, 0.0f);\n"
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" uint4 next_row = SampleEFB(v_tex0, 1.0f);\n"
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" uint3 combined_rows = 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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}
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else
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{
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out.Write(" uint4 current_row = SampleEFB(v_tex0, 0.0f);\n"
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" uint3 combined_rows = current_row.rgb * filter_coefficients[1];\n");
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}
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out.Write(" // Shift right by 6 to divide by 64, as filter coefficients\n"
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" // that sum to 64 result in no change in brightness\n"
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" uint4 texcol_raw = uint4(combined_rows.rgb >> 6, {});\n",
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uid_data->efb_has_alpha ? "current_row.a" : "255");
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if (uid_data->copy_filter_can_overflow)
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out.Write(" texcol_raw &= 0x1ffu;\n");
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// Note that overflow occurs when the sum of values is >= 128, but this max situation can be hit
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// on >= 64, so we always include it.
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out.Write(" texcol_raw = min(texcol_raw, uint4(255, 255, 255, 255));\n");
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if (uid_data->apply_gamma)
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{
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out.Write(" texcol_raw = uint4(round(pow(abs(float4(texcol_raw) / 255.0),\n"
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" float4(gamma_rcp, gamma_rcp, gamma_rcp, 1.0)) * 255.0));\n");
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}
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if (uid_data->is_intensity)
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{
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out.Write(" // Intensity/YUV format conversion constants determined by hardware testing\n"
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" const float4 y_const = float4( 66, 129, 25, 16);\n"
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" const float4 u_const = float4(-38, -74, 112, 128);\n"
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" const float4 v_const = float4(112, -94, -18, 128);\n"
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" // Intensity/YUV format conversion\n"
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" texcol_raw.rgb = uint3(dot(y_const, float4(texcol_raw.rgb, 256)),\n"
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" dot(u_const, float4(texcol_raw.rgb, 256)),\n"
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" dot(v_const, float4(texcol_raw.rgb, 256)));\n"
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" // Divide by 256 and round .5 and higher up\n"
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" texcol_raw.rgb = (texcol_raw.rgb >> 8) + ((texcol_raw.rgb >> 7) & 1u);\n");
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}
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switch (uid_data->dst_format)
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{
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case EFBCopyFormat::R4: // R4
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out.Write(" float red = float(texcol_raw.r & 0xF0u) / 240.0;\n"
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" ocol0 = float4(red, red, red, red);\n");
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break;
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case EFBCopyFormat::R8_0x1: // R8
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case EFBCopyFormat::R8: // R8
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out.Write(" ocol0 = float4(texcol_raw).rrrr / 255.0;\n");
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break;
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case EFBCopyFormat::RA4: // RA4
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out.Write(" float2 red_alpha = float2(texcol_raw.ra & 0xF0u) / 240.0;\n"
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" ocol0 = red_alpha.rrrg;\n");
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break;
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case EFBCopyFormat::RA8: // RA8
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out.Write(" ocol0 = float4(texcol_raw).rrra / 255.0;\n");
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break;
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case EFBCopyFormat::A8: // A8
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out.Write(" ocol0 = float4(texcol_raw).aaaa / 255.0;\n");
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break;
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case EFBCopyFormat::G8: // G8
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out.Write(" ocol0 = float4(texcol_raw).gggg / 255.0;\n");
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break;
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case EFBCopyFormat::B8: // B8
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out.Write(" ocol0 = float4(texcol_raw).bbbb / 255.0;\n");
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break;
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case EFBCopyFormat::RG8: // RG8
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out.Write(" ocol0 = float4(texcol_raw).rrrg / 255.0;\n");
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break;
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case EFBCopyFormat::GB8: // GB8
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out.Write(" ocol0 = float4(texcol_raw).gggb / 255.0;\n");
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break;
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case EFBCopyFormat::RGB565: // RGB565
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out.Write(" float2 red_blue = float2(texcol_raw.rb & 0xF8u) / 248.0;\n"
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" float green = float(texcol_raw.g & 0xFCu) / 252.0;\n"
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" ocol0 = float4(red_blue.r, green, red_blue.g, 1.0);\n");
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break;
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case EFBCopyFormat::RGB5A3: // RGB5A3
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// TODO: The MSB controls whether we have RGB5 or RGB4A3, this selection
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// will need to be implemented once we move away from floats.
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out.Write(" float3 color = float3(texcol_raw.rgb & 0xF8u) / 248.0;\n"
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" float alpha = float(texcol_raw.a & 0xE0u) / 224.0;\n"
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" ocol0 = float4(color, alpha);\n");
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break;
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case EFBCopyFormat::RGBA8: // RGBA8
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out.Write(" ocol0 = float4(texcol_raw.rgba) / 255.0;\n");
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break;
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case EFBCopyFormat::XFB:
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out.Write(" ocol0 = float4(float3(texcol_raw.rgb) / 255.0, 1.0);\n");
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break;
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default:
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ERROR_LOG_FMT(VIDEO, "Unknown copy/intensity color format: {} {}", uid_data->dst_format,
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uid_data->is_intensity);
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out.Write(" ocol0 = float4(texcol_raw.rgba) / 255.0;\n");
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break;
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}
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out.Write("}}\n");
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return out;
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}
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} // namespace TextureConversionShaderGen
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