mirror of
https://github.com/dolphin-emu/dolphin.git
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1288 lines
54 KiB
C++
1288 lines
54 KiB
C++
// Copyright 2015 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "VideoCommon/UberShaderPixel.h"
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#include "Common/Assert.h"
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#include "VideoCommon/BPMemory.h"
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#include "VideoCommon/DriverDetails.h"
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#include "VideoCommon/NativeVertexFormat.h"
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#include "VideoCommon/PixelShaderGen.h"
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#include "VideoCommon/ShaderGenCommon.h"
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#include "VideoCommon/UberShaderCommon.h"
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#include "VideoCommon/VideoCommon.h"
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#include "VideoCommon/VideoConfig.h"
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#include "VideoCommon/XFMemory.h"
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namespace UberShader
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{
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PixelShaderUid GetPixelShaderUid()
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{
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PixelShaderUid out;
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pixel_ubershader_uid_data* const uid_data = out.GetUidData();
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uid_data->num_texgens = xfmem.numTexGen.numTexGens;
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uid_data->early_depth = bpmem.GetEmulatedZ() == EmulatedZ::Early &&
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(g_ActiveConfig.bFastDepthCalc ||
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bpmem.alpha_test.TestResult() == AlphaTestResult::Undetermined) &&
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!(bpmem.zmode.testenable && bpmem.genMode.zfreeze);
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uid_data->per_pixel_depth =
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(bpmem.ztex2.op != ZTexOp::Disabled && bpmem.GetEmulatedZ() == EmulatedZ::Late) ||
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(!g_ActiveConfig.bFastDepthCalc && bpmem.zmode.testenable && !uid_data->early_depth) ||
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(bpmem.zmode.testenable && bpmem.genMode.zfreeze);
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uid_data->uint_output = bpmem.blendmode.UseLogicOp();
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return out;
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}
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void ClearUnusedPixelShaderUidBits(APIType api_type, const ShaderHostConfig& host_config,
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PixelShaderUid* uid)
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{
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pixel_ubershader_uid_data* const uid_data = uid->GetUidData();
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// With fbfetch, ubershaders always blend using that and don't use dual src
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if (host_config.backend_shader_framebuffer_fetch || !host_config.backend_dual_source_blend)
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uid_data->no_dual_src = 1;
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// Dual source is always enabled in the shader if this bug is not present
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else if (!DriverDetails::HasBug(DriverDetails::BUG_BROKEN_DUAL_SOURCE_BLENDING))
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uid_data->no_dual_src = 0;
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// OpenGL and Vulkan convert implicitly normalized color outputs to their uint representation.
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// Therefore, it is not necessary to use a uint output on these backends. We also disable the
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// uint output when logic op is not supported (i.e. driver/device does not support D3D11.1).
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if (api_type != APIType::D3D || !host_config.backend_logic_op)
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uid_data->uint_output = 0;
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}
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ShaderCode GenPixelShader(APIType api_type, const ShaderHostConfig& host_config,
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const pixel_ubershader_uid_data* uid_data)
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{
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const bool per_pixel_lighting = host_config.per_pixel_lighting;
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const bool msaa = host_config.msaa;
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const bool ssaa = host_config.ssaa;
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const bool stereo = host_config.stereo;
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const bool use_framebuffer_fetch = host_config.backend_shader_framebuffer_fetch;
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const bool use_dual_source = host_config.backend_dual_source_blend && !uid_data->no_dual_src;
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const bool early_depth = uid_data->early_depth != 0;
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const bool per_pixel_depth = uid_data->per_pixel_depth != 0;
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const bool bounding_box = host_config.bounding_box;
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const u32 numTexgen = uid_data->num_texgens;
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ShaderCode out;
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ASSERT_MSG(VIDEO, !(use_dual_source && use_framebuffer_fetch),
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"If you're using framebuffer fetch, you shouldn't need dual source blend!");
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out.Write("// {}\n", *uid_data);
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WriteBitfieldExtractHeader(out, api_type, host_config);
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WritePixelShaderCommonHeader(out, api_type, host_config, bounding_box);
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if (per_pixel_lighting)
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WriteLightingFunction(out);
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#ifdef __APPLE__
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// Framebuffer fetch is only supported by Metal, so ensure that we're running Vulkan (MoltenVK)
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// if we want to use it.
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if (api_type == APIType::Vulkan || api_type == APIType::Metal)
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{
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if (use_dual_source)
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{
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out.Write("FRAGMENT_OUTPUT_LOCATION_INDEXED(0, 0) out vec4 ocol0;\n"
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"FRAGMENT_OUTPUT_LOCATION_INDEXED(0, 1) out vec4 ocol1;\n");
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}
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else
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{
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// Metal doesn't support a single unified variable for both input and output,
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// so when using framebuffer fetch, we declare the input separately below.
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out.Write("FRAGMENT_OUTPUT_LOCATION(0) out vec4 {};\n",
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use_framebuffer_fetch ? "real_ocol0" : "ocol0");
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}
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if (use_framebuffer_fetch)
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{
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// Subpass inputs will be converted to framebuffer fetch by SPIRV-Cross.
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out.Write("INPUT_ATTACHMENT_BINDING(0, 0, 0) uniform subpassInput in_ocol0;\n");
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}
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}
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else
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#endif
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{
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bool has_broken_decoration =
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DriverDetails::HasBug(DriverDetails::BUG_BROKEN_FRAGMENT_SHADER_INDEX_DECORATION);
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out.Write("{} {} {} {};\n",
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has_broken_decoration ? "FRAGMENT_OUTPUT_LOCATION(0)" :
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"FRAGMENT_OUTPUT_LOCATION_INDEXED(0, 0)",
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use_framebuffer_fetch ? "FRAGMENT_INOUT" : "out",
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uid_data->uint_output ? "uvec4" : "vec4",
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use_framebuffer_fetch ? "real_ocol0" : "ocol0");
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if (use_dual_source)
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{
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out.Write("{} out {} ocol1;\n",
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has_broken_decoration ? "FRAGMENT_OUTPUT_LOCATION(1)" :
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"FRAGMENT_OUTPUT_LOCATION_INDEXED(0, 1)",
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uid_data->uint_output ? "uvec4" : "vec4");
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}
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}
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if (per_pixel_depth)
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out.Write("#define depth gl_FragDepth\n");
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if (host_config.backend_geometry_shaders)
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{
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out.Write("VARYING_LOCATION(0) in VertexData {{\n");
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GenerateVSOutputMembers(out, api_type, numTexgen, host_config,
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GetInterpolationQualifier(msaa, ssaa, true, true), ShaderStage::Pixel);
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out.Write("}};\n\n");
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}
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else
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{
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// Let's set up attributes
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u32 counter = 0;
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out.Write("VARYING_LOCATION({}) {} in float4 colors_0;\n", counter++,
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GetInterpolationQualifier(msaa, ssaa));
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out.Write("VARYING_LOCATION({}) {} in float4 colors_1;\n", counter++,
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GetInterpolationQualifier(msaa, ssaa));
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for (u32 i = 0; i < numTexgen; ++i)
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{
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out.Write("VARYING_LOCATION({}) {} in float3 tex{};\n", counter++,
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GetInterpolationQualifier(msaa, ssaa), i);
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}
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if (!host_config.fast_depth_calc)
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{
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out.Write("VARYING_LOCATION({}) {} in float4 clipPos;\n", counter++,
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GetInterpolationQualifier(msaa, ssaa));
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}
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if (per_pixel_lighting)
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{
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out.Write("VARYING_LOCATION({}) {} in float3 Normal;\n", counter++,
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GetInterpolationQualifier(msaa, ssaa));
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out.Write("VARYING_LOCATION({}) {} in float3 WorldPos;\n", counter++,
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GetInterpolationQualifier(msaa, ssaa));
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}
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}
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// Uniform index -> texture coordinates
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// Quirk: when the tex coord is not less than the number of tex gens (i.e. the tex coord does
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// not exist), then tex coord 0 is used (though sometimes glitchy effects happen on console).
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// This affects the Mario portrait in Luigi's Mansion, where the developers forgot to set
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// the number of tex gens to 2 (bug 11462).
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if (numTexgen > 0)
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{
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out.Write("int2 selectTexCoord(uint index");
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for (u32 i = 0; i < numTexgen; i++)
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out.Write(", int2 fixpoint_uv{}", i);
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out.Write(") {{\n");
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if (api_type == APIType::D3D)
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{
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out.Write(" switch (index) {{\n");
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for (u32 i = 0; i < numTexgen; i++)
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{
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out.Write(" case {}u:\n"
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" return fixpoint_uv{};\n",
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i, i);
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}
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out.Write(" default:\n"
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" return fixpoint_uv0;\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(" if (index >= {}u) {{\n", numTexgen);
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out.Write(" return fixpoint_uv0;\n"
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" }}\n");
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if (numTexgen > 4)
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out.Write(" if (index < 4u) {{\n");
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if (numTexgen > 2)
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out.Write(" if (index < 2u) {{\n");
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if (numTexgen > 1)
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out.Write(" return (index == 0u) ? fixpoint_uv0 : fixpoint_uv1;\n");
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else
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out.Write(" return fixpoint_uv0;\n");
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if (numTexgen > 2)
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{
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out.Write(" }} else {{\n"); // >= 2 < min(4, numTexgen)
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if (numTexgen > 3)
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out.Write(" return (index == 2u) ? fixpoint_uv2 : fixpoint_uv3;\n");
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else
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out.Write(" return fixpoint_uv2;\n");
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out.Write(" }}\n");
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}
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if (numTexgen > 4)
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{
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out.Write(" }} else {{\n"); // >= 4 < min(8, numTexgen)
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if (numTexgen > 6)
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out.Write(" if (index < 6u) {{\n");
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if (numTexgen > 5)
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out.Write(" return (index == 4u) ? fixpoint_uv4 : fixpoint_uv5;\n");
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else
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out.Write(" return fixpoint_uv4;\n");
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if (numTexgen > 6)
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{
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out.Write(" }} else {{\n"); // >= 6 < min(8, numTexgen)
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if (numTexgen > 7)
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out.Write(" return (index == 6u) ? fixpoint_uv6 : fixpoint_uv7;\n");
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else
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out.Write(" return fixpoint_uv6;\n");
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out.Write(" }}\n");
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}
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out.Write(" }}\n");
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}
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}
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out.Write("}}\n\n");
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}
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// =====================
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// Texture Sampling
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// =====================
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if (host_config.backend_dynamic_sampler_indexing)
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{
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// Doesn't look like DirectX supports this. Oh well the code path is here just in case it
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// supports this in the future.
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out.Write("int4 sampleTextureWrapper(uint texmap, int2 uv, int layer) {{\n");
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out.Write(" return sampleTexture(texmap, samp[texmap], uv, layer);\n");
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out.Write("}}\n\n");
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}
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else
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{
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out.Write("int4 sampleTextureWrapper(uint sampler_num, int2 uv, int layer) {{\n"
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" // This is messy, but DirectX, OpenGL 3.3, and OpenGL ES 3.0 don't support "
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"dynamic indexing of the sampler array\n"
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" // With any luck the shader compiler will optimise this if the hardware supports "
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"dynamic indexing.\n"
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" switch(sampler_num) {{\n");
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for (int i = 0; i < 8; i++)
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{
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out.Write(" case {0}u: return sampleTexture({0}u, samp[{0}u], uv, layer);\n", i);
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}
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out.Write(" }}\n"
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"}}\n\n");
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}
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// ======================
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// Arbitrary Swizzling
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// ======================
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out.Write("int4 Swizzle(uint s, int4 color) {{\n"
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" // AKA: Color Channel Swapping\n"
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"\n"
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" int4 ret;\n");
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out.Write(" ret.r = color[{}];\n", BitfieldExtract<&TevKSel::swap_rb>("bpmem_tevksel(s * 2u)"));
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out.Write(" ret.g = color[{}];\n", BitfieldExtract<&TevKSel::swap_ga>("bpmem_tevksel(s * 2u)"));
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out.Write(" ret.b = color[{}];\n",
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BitfieldExtract<&TevKSel::swap_rb>("bpmem_tevksel(s * 2u + 1u)"));
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out.Write(" ret.a = color[{}];\n",
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BitfieldExtract<&TevKSel::swap_ga>("bpmem_tevksel(s * 2u + 1u)"));
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out.Write(" return ret;\n"
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"}}\n\n");
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// ======================
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// Indirect Wrapping
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// ======================
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out.Write("int Wrap(int coord, uint mode) {{\n"
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" if (mode == 0u) // ITW_OFF\n"
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" return coord;\n"
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" else if (mode < 6u) // ITW_256 to ITW_16\n"
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" return coord & (0xfffe >> mode);\n"
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" else // ITW_0\n"
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" return 0;\n"
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"}}\n\n");
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// ======================
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// Indirect Lookup
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// ======================
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const auto LookupIndirectTexture = [&out](std::string_view out_var_name,
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std::string_view in_index_name) {
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// in_index_name is the indirect stage, not the tev stage
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// bpmem_iref is packed differently from RAS1_IREF
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// This function assumes bpmem_iref is nonzero (i.e. matrix is not off, and the
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// indirect texture stage is enabled).
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out.Write("{{\n"
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" uint iref = bpmem_iref({});\n"
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" uint texcoord = bitfieldExtract(iref, 0, 3);\n"
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" uint texmap = bitfieldExtract(iref, 8, 3);\n"
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" int2 fixedPoint_uv = getTexCoord(texcoord);\n"
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"\n"
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" if (({} & 1u) == 0u)\n"
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" fixedPoint_uv = fixedPoint_uv >> " I_INDTEXSCALE "[{} >> 1].xy;\n"
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" else\n"
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" fixedPoint_uv = fixedPoint_uv >> " I_INDTEXSCALE "[{} >> 1].zw;\n"
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"\n"
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" {} = sampleTextureWrapper(texmap, fixedPoint_uv, layer).abg;\n"
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"}}\n",
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in_index_name, in_index_name, in_index_name, in_index_name, out_var_name);
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};
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// ======================
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// TEV's Special Lerp
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// ======================
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const auto WriteTevLerp = [&out](std::string_view components) {
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out.Write(
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"// TEV's Linear Interpolate, plus bias, add/subtract and scale\n"
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"int{0} tevLerp{0}(int{0} A, int{0} B, int{0} C, int{0} D, uint bias, bool op, "
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"uint scale) {{\n"
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" // Scale C from 0..255 to 0..256\n"
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" C += C >> 7;\n"
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"\n"
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" // Add bias to D\n"
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" if (bias == 1u) D += 128;\n"
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" else if (bias == 2u) D -= 128;\n"
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"\n"
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" int{0} lerp = (A << 8) + (B - A)*C;\n"
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" if (scale != 3u) {{\n"
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" lerp = lerp << scale;\n"
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" D = D << scale;\n"
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" }}\n"
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"\n"
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" // TODO: Is this rounding bias still added when the scale is divide by 2? Currently we "
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"do not apply it.\n"
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" if (scale != 3u)\n"
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" lerp = lerp + (op ? 127 : 128);\n"
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"\n"
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" int{0} result = lerp >> 8;\n"
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"\n"
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" // Add/Subtract D\n"
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" if (op) // Subtract\n"
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" result = D - result;\n"
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" else // Add\n"
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" result = D + result;\n"
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"\n"
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" // Most of the Scale was moved inside the lerp for improved precision\n"
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" // But we still do the divide by 2 here\n"
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" if (scale == 3u)\n"
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" result = result >> 1;\n"
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" return result;\n"
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"}}\n\n",
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components);
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};
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WriteTevLerp(""); // int
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WriteTevLerp("3"); // int3
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// =======================
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// TEV's Color Compare
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// =======================
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out.Write(
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"// Implements operations 0-5 of TEV's compare mode,\n"
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"// which are common to both color and alpha channels\n"
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"bool tevCompare(uint op, int3 color_A, int3 color_B) {{\n"
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" switch (op) {{\n"
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" case 0u: // TevCompareMode::R8, TevComparison::GT\n"
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" return (color_A.r > color_B.r);\n"
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" case 1u: // TevCompareMode::R8, TevComparison::EQ\n"
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" return (color_A.r == color_B.r);\n"
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" case 2u: // TevCompareMode::GR16, TevComparison::GT\n"
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" int A_16 = (color_A.r | (color_A.g << 8));\n"
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" int B_16 = (color_B.r | (color_B.g << 8));\n"
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" return A_16 > B_16;\n"
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" case 3u: // TevCompareMode::GR16, TevComparison::EQ\n"
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" return (color_A.r == color_B.r && color_A.g == color_B.g);\n"
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" case 4u: // TevCompareMode::BGR24, TevComparison::GT\n"
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" int A_24 = (color_A.r | (color_A.g << 8) | (color_A.b << 16));\n"
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" int B_24 = (color_B.r | (color_B.g << 8) | (color_B.b << 16));\n"
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" return A_24 > B_24;\n"
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" case 5u: // TevCompareMode::BGR24, TevComparison::EQ\n"
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" return (color_A.r == color_B.r && color_A.g == color_B.g && color_A.b == color_B.b);\n"
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" default:\n"
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" return false;\n"
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" }}\n"
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"}}\n\n");
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// =================
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// Input Selects
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// =================
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out.Write("struct State {{\n"
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" int4 Reg[4];\n"
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" int4 TexColor;\n"
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" int AlphaBump;\n"
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"}};\n"
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"struct StageState {{\n"
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" uint stage;\n"
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" uint order;\n"
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" uint cc;\n"
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" uint ac;\n"
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"}};\n"
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"\n"
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"int4 getRasColor(State s, StageState ss, float4 colors_0, float4 colors_1);\n"
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"int4 getKonstColor(State s, StageState ss);\n"
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"\n");
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static constexpr Common::EnumMap<std::string_view, CompareMode::Always> tev_alpha_funcs_table{
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"return false;", // CompareMode::Never
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"return a < b;", // CompareMode::Less
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"return a == b;", // CompareMode::Equal
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"return a <= b;", // CompareMode::LEqual
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"return a > b;", // CompareMode::Greater
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"return a != b;", // CompareMode::NEqual
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"return a >= b;", // CompareMode::GEqual
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"return true;" // CompareMode::Always
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};
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static constexpr Common::EnumMap<std::string_view, TevColorArg::Zero> tev_c_input_table{
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"return s.Reg[0].rgb;", // CPREV,
|
|
"return s.Reg[0].aaa;", // APREV,
|
|
"return s.Reg[1].rgb;", // C0,
|
|
"return s.Reg[1].aaa;", // A0,
|
|
"return s.Reg[2].rgb;", // C1,
|
|
"return s.Reg[2].aaa;", // A1,
|
|
"return s.Reg[3].rgb;", // C2,
|
|
"return s.Reg[3].aaa;", // A2,
|
|
"return s.TexColor.rgb;", // TEXC,
|
|
"return s.TexColor.aaa;", // TEXA,
|
|
"return getRasColor(s, ss, colors_0, colors_1).rgb;", // RASC,
|
|
"return getRasColor(s, ss, colors_0, colors_1).aaa;", // RASA,
|
|
"return int3(255, 255, 255);", // ONE
|
|
"return int3(128, 128, 128);", // HALF
|
|
"return getKonstColor(s, ss).rgb;", // KONST
|
|
"return int3(0, 0, 0);", // ZERO
|
|
};
|
|
|
|
static constexpr Common::EnumMap<std::string_view, TevAlphaArg::Zero> tev_a_input_table{
|
|
"return s.Reg[0].a;", // APREV,
|
|
"return s.Reg[1].a;", // A0,
|
|
"return s.Reg[2].a;", // A1,
|
|
"return s.Reg[3].a;", // A2,
|
|
"return s.TexColor.a;", // TEXA,
|
|
"return getRasColor(s, ss, colors_0, colors_1).a;", // RASA,
|
|
"return getKonstColor(s, ss).a;", // KONST, (hw1 had quarter)
|
|
"return 0;", // ZERO
|
|
};
|
|
|
|
static constexpr Common::EnumMap<std::string_view, TevOutput::Color2> tev_regs_lookup_table{
|
|
"return s.Reg[0];",
|
|
"return s.Reg[1];",
|
|
"return s.Reg[2];",
|
|
"return s.Reg[3];",
|
|
};
|
|
|
|
static constexpr Common::EnumMap<std::string_view, TevOutput::Color2> tev_c_set_table{
|
|
"s.Reg[0].rgb = color;",
|
|
"s.Reg[1].rgb = color;",
|
|
"s.Reg[2].rgb = color;",
|
|
"s.Reg[3].rgb = color;",
|
|
};
|
|
|
|
static constexpr Common::EnumMap<std::string_view, TevOutput::Color2> tev_a_set_table{
|
|
"s.Reg[0].a = alpha;",
|
|
"s.Reg[1].a = alpha;",
|
|
"s.Reg[2].a = alpha;",
|
|
"s.Reg[3].a = alpha;",
|
|
};
|
|
|
|
out.Write("// Helper function for Alpha Test\n"
|
|
"bool alphaCompare(int a, int b, uint compare) {{\n");
|
|
WriteSwitch(out, api_type, "compare", tev_alpha_funcs_table, 2, false);
|
|
out.Write("}}\n"
|
|
"\n"
|
|
"int3 selectColorInput(State s, StageState ss, float4 colors_0, float4 colors_1, "
|
|
"uint index) {{\n");
|
|
WriteSwitch(out, api_type, "index", tev_c_input_table, 2, false);
|
|
out.Write("}}\n"
|
|
"\n"
|
|
"int selectAlphaInput(State s, StageState ss, float4 colors_0, float4 colors_1, "
|
|
"uint index) {{\n");
|
|
WriteSwitch(out, api_type, "index", tev_a_input_table, 2, false);
|
|
out.Write("}}\n"
|
|
"\n"
|
|
"int4 getTevReg(in State s, uint index) {{\n");
|
|
WriteSwitch(out, api_type, "index", tev_regs_lookup_table, 2, false);
|
|
out.Write("}}\n"
|
|
"\n");
|
|
|
|
// Since the fixed-point texture coodinate variables aren't global, we need to pass
|
|
// them to the select function. This applies to all backends.
|
|
if (numTexgen > 0)
|
|
{
|
|
out.Write("#define getTexCoord(index) selectTexCoord((index)");
|
|
for (u32 i = 0; i < numTexgen; i++)
|
|
out.Write(", fixpoint_uv{}", i);
|
|
out.Write(")\n\n");
|
|
}
|
|
|
|
if (early_depth && host_config.backend_early_z)
|
|
out.Write("FORCE_EARLY_Z;\n");
|
|
|
|
out.Write("void main()\n{{\n");
|
|
out.Write(" float4 rawpos = gl_FragCoord;\n");
|
|
|
|
if (use_framebuffer_fetch)
|
|
{
|
|
// Store off a copy of the initial framebuffer value.
|
|
//
|
|
// If FB_FETCH_VALUE isn't defined (i.e. no special keyword for fetching from the
|
|
// framebuffer), we read from real_ocol0.
|
|
out.Write("#ifdef FB_FETCH_VALUE\n"
|
|
" float4 initial_ocol0 = FB_FETCH_VALUE;\n"
|
|
"#else\n"
|
|
" float4 initial_ocol0 = real_ocol0;\n"
|
|
"#endif\n");
|
|
|
|
// QComm's Adreno driver doesn't seem to like using the framebuffer_fetch value as an
|
|
// intermediate value with multiple reads & modifications, so we pull out the "real" output
|
|
// value above and use a temporary for calculations, then set the output value once at the
|
|
// end of the shader.
|
|
out.Write(" float4 ocol0;\n"
|
|
" float4 ocol1;\n");
|
|
}
|
|
|
|
if (host_config.backend_geometry_shaders && stereo)
|
|
{
|
|
out.Write("\tint layer = gl_Layer;\n");
|
|
}
|
|
else
|
|
{
|
|
out.Write("\tint layer = 0;\n");
|
|
}
|
|
|
|
out.Write(" int3 tevcoord = int3(0, 0, 0);\n"
|
|
" State s;\n"
|
|
" s.TexColor = int4(0, 0, 0, 0);\n"
|
|
" s.AlphaBump = 0;\n"
|
|
"\n");
|
|
for (int i = 0; i < 4; i++)
|
|
out.Write(" s.Reg[{}] = " I_COLORS "[{}];\n", i, i);
|
|
|
|
const char* color_input_prefix = "";
|
|
if (per_pixel_lighting)
|
|
{
|
|
out.Write(" float4 lit_colors_0 = colors_0;\n"
|
|
" float4 lit_colors_1 = colors_1;\n"
|
|
" float3 lit_normal = normalize(Normal.xyz);\n"
|
|
" float3 lit_pos = WorldPos.xyz;\n");
|
|
WriteVertexLighting(out, api_type, "lit_pos", "lit_normal", "colors_0", "colors_1",
|
|
"lit_colors_0", "lit_colors_1");
|
|
color_input_prefix = "lit_";
|
|
out.Write(" // The number of colors available to TEV is determined by numColorChans.\n"
|
|
" // Normally this is performed in the vertex shader after lighting,\n"
|
|
" // but with per-pixel lighting, we need to perform it here.\n"
|
|
" // TODO: Actually implement this for ubershaders\n"
|
|
" // if (xfmem_numColorChans == 0u)\n"
|
|
" // o.colors_0 = float4(0.0, 0.0, 0.0, 0.0);\n"
|
|
" // if (xfmem_numColorChans <= 1u)\n"
|
|
" // o.colors_1 = float4(0.0, 0.0, 0.0, 0.0);\n");
|
|
}
|
|
|
|
out.Write(" uint num_stages = {};\n\n",
|
|
BitfieldExtract<&GenMode::numtevstages>("bpmem_genmode"));
|
|
|
|
out.Write(" // Main tev loop\n");
|
|
|
|
out.Write(" for(uint stage = 0u; stage <= num_stages; stage++)\n"
|
|
" {{\n"
|
|
" StageState ss;\n"
|
|
" ss.stage = stage;\n"
|
|
" ss.cc = bpmem_combiners(stage).x;\n"
|
|
" ss.ac = bpmem_combiners(stage).y;\n"
|
|
" ss.order = bpmem_tevorder(stage>>1);\n"
|
|
" if ((stage & 1u) == 1u)\n"
|
|
" ss.order = ss.order >> {};\n\n",
|
|
int(TwoTevStageOrders().enable_tex_odd.StartBit() -
|
|
TwoTevStageOrders().enable_tex_even.StartBit()));
|
|
|
|
// Disable texturing when there are no texgens (for now)
|
|
if (numTexgen != 0)
|
|
{
|
|
for (u32 i = 0; i < numTexgen; i++)
|
|
{
|
|
out.Write(" int2 fixpoint_uv{} = int2(", i);
|
|
out.Write("(tex{}.z == 0.0 ? tex{}.xy : tex{}.xy / tex{}.z)", i, i, i, i);
|
|
out.Write(" * float2(" I_TEXDIMS "[{}].zw * 128));\n", i);
|
|
// TODO: S24 overflows here?
|
|
}
|
|
|
|
out.Write("\n"
|
|
" uint tex_coord = {};\n",
|
|
BitfieldExtract<&TwoTevStageOrders::texcoord_even>("ss.order"));
|
|
out.Write(" int2 fixedPoint_uv = getTexCoord(tex_coord);\n"
|
|
"\n"
|
|
" bool texture_enabled = (ss.order & {}u) != 0u;\n",
|
|
1 << TwoTevStageOrders().enable_tex_even.StartBit());
|
|
out.Write("\n"
|
|
" // Indirect textures\n"
|
|
" uint tevind = bpmem_tevind(stage);\n"
|
|
" if (tevind != 0u)\n"
|
|
" {{\n"
|
|
" uint bs = {};\n",
|
|
BitfieldExtract<&TevStageIndirect::bs>("tevind"));
|
|
out.Write(" uint fmt = {};\n", BitfieldExtract<&TevStageIndirect::fmt>("tevind"));
|
|
out.Write(" uint bias = {};\n", BitfieldExtract<&TevStageIndirect::bias>("tevind"));
|
|
out.Write(" uint bt = {};\n", BitfieldExtract<&TevStageIndirect::bt>("tevind"));
|
|
out.Write(" uint matrix_index = {};\n",
|
|
BitfieldExtract<&TevStageIndirect::matrix_index>("tevind"));
|
|
out.Write(" uint matrix_id = {};\n",
|
|
BitfieldExtract<&TevStageIndirect::matrix_id>("tevind"));
|
|
out.Write(" int2 indtevtrans = int2(0, 0);\n"
|
|
"\n");
|
|
// There is always a bit set in bpmem_iref if the data is valid (matrix is not off, and the
|
|
// indirect texture stage is enabled). If the matrix is off, the result doesn't matter; if the
|
|
// indirect texture stage is disabled, the result is undefined (and produces a glitchy pattern
|
|
// on hardware, different from this).
|
|
// For the undefined case, we just skip applying the indirect operation, which is close enough.
|
|
// Viewtiful Joe hits the undefined case (bug 12525).
|
|
// Wrapping and add to previous still apply in this case (and when the stage is disabled).
|
|
out.Write(" if (bpmem_iref(bt) != 0u) {{\n");
|
|
out.Write(" int3 indcoord;\n");
|
|
LookupIndirectTexture("indcoord", "bt");
|
|
out.Write(" if (bs != 0u)\n"
|
|
" s.AlphaBump = indcoord[bs - 1u];\n"
|
|
" switch(fmt)\n"
|
|
" {{\n"
|
|
" case {:s}:\n",
|
|
IndTexFormat::ITF_8);
|
|
out.Write(" indcoord.x = indcoord.x + ((bias & 1u) != 0u ? -128 : 0);\n"
|
|
" indcoord.y = indcoord.y + ((bias & 2u) != 0u ? -128 : 0);\n"
|
|
" indcoord.z = indcoord.z + ((bias & 4u) != 0u ? -128 : 0);\n"
|
|
" s.AlphaBump = s.AlphaBump & 0xf8;\n"
|
|
" break;\n"
|
|
" case {:s}:\n",
|
|
IndTexFormat::ITF_5);
|
|
out.Write(" indcoord.x = (indcoord.x >> 3) + ((bias & 1u) != 0u ? 1 : 0);\n"
|
|
" indcoord.y = (indcoord.y >> 3) + ((bias & 2u) != 0u ? 1 : 0);\n"
|
|
" indcoord.z = (indcoord.z >> 3) + ((bias & 4u) != 0u ? 1 : 0);\n"
|
|
" s.AlphaBump = s.AlphaBump << 5;\n"
|
|
" break;\n"
|
|
" case {:s}:\n",
|
|
IndTexFormat::ITF_4);
|
|
out.Write(" indcoord.x = (indcoord.x >> 4) + ((bias & 1u) != 0u ? 1 : 0);\n"
|
|
" indcoord.y = (indcoord.y >> 4) + ((bias & 2u) != 0u ? 1 : 0);\n"
|
|
" indcoord.z = (indcoord.z >> 4) + ((bias & 4u) != 0u ? 1 : 0);\n"
|
|
" s.AlphaBump = s.AlphaBump << 4;\n"
|
|
" break;\n"
|
|
" case {:s}:\n",
|
|
IndTexFormat::ITF_3);
|
|
out.Write(" indcoord.x = (indcoord.x >> 5) + ((bias & 1u) != 0u ? 1 : 0);\n"
|
|
" indcoord.y = (indcoord.y >> 5) + ((bias & 2u) != 0u ? 1 : 0);\n"
|
|
" indcoord.z = (indcoord.z >> 5) + ((bias & 4u) != 0u ? 1 : 0);\n"
|
|
" s.AlphaBump = s.AlphaBump << 3;\n"
|
|
" break;\n"
|
|
" }}\n"
|
|
"\n"
|
|
" // Matrix multiply\n"
|
|
" if (matrix_index != 0u)\n"
|
|
" {{\n"
|
|
" uint mtxidx = 2u * (matrix_index - 1u);\n"
|
|
" int shift = " I_INDTEXMTX "[mtxidx].w;\n"
|
|
"\n"
|
|
" switch (matrix_id)\n"
|
|
" {{\n"
|
|
" case 0u: // 3x2 S0.10 matrix\n"
|
|
" indtevtrans = int2(idot(" I_INDTEXMTX
|
|
"[mtxidx].xyz, indcoord), idot(" I_INDTEXMTX "[mtxidx + 1u].xyz, indcoord)) >> 3;\n"
|
|
" break;\n"
|
|
" case 1u: // S matrix, S17.7 format\n"
|
|
" indtevtrans = (fixedPoint_uv * indcoord.xx) >> 8;\n"
|
|
" break;\n"
|
|
" case 2u: // T matrix, S17.7 format\n"
|
|
" indtevtrans = (fixedPoint_uv * indcoord.yy) >> 8;\n"
|
|
" break;\n"
|
|
" }}\n"
|
|
"\n"
|
|
" if (shift >= 0)\n"
|
|
" indtevtrans = indtevtrans >> shift;\n"
|
|
" else\n"
|
|
" indtevtrans = indtevtrans << ((-shift) & 31);\n"
|
|
" }}\n"
|
|
" }}\n"
|
|
"\n"
|
|
" // Wrapping\n"
|
|
" uint sw = {};\n",
|
|
BitfieldExtract<&TevStageIndirect::sw>("tevind"));
|
|
out.Write(" uint tw = {}; \n", BitfieldExtract<&TevStageIndirect::tw>("tevind"));
|
|
out.Write(
|
|
" int2 wrapped_coord = int2(Wrap(fixedPoint_uv.x, sw), Wrap(fixedPoint_uv.y, tw));\n"
|
|
"\n"
|
|
" if ((tevind & {}u) != 0u) // add previous tevcoord\n",
|
|
1 << TevStageIndirect().fb_addprev.StartBit());
|
|
out.Write(" tevcoord.xy += wrapped_coord + indtevtrans;\n"
|
|
" else\n"
|
|
" tevcoord.xy = wrapped_coord + indtevtrans;\n"
|
|
"\n"
|
|
" // Emulate s24 overflows\n"
|
|
" tevcoord.xy = (tevcoord.xy << 8) >> 8;\n"
|
|
" }}\n"
|
|
" else\n"
|
|
" {{\n"
|
|
" tevcoord.xy = fixedPoint_uv;\n"
|
|
" }}\n"
|
|
"\n"
|
|
" // Sample texture for stage\n"
|
|
" if (texture_enabled) {{\n"
|
|
" uint sampler_num = {};\n",
|
|
BitfieldExtract<&TwoTevStageOrders::texmap_even>("ss.order"));
|
|
out.Write("\n"
|
|
" int4 color = sampleTextureWrapper(sampler_num, tevcoord.xy, layer);\n"
|
|
" uint swap = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::AlphaCombiner::tswap>("ss.ac"));
|
|
out.Write(" s.TexColor = Swizzle(swap, color);\n");
|
|
out.Write(" }} else {{\n"
|
|
" // Texture is disabled\n"
|
|
" s.TexColor = int4(255, 255, 255, 255);\n"
|
|
" }}\n"
|
|
"\n");
|
|
}
|
|
|
|
out.Write(" // This is the Meat of TEV\n"
|
|
" {{\n"
|
|
" // Color Combiner\n");
|
|
out.Write(" uint color_a = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::ColorCombiner::a>("ss.cc"));
|
|
out.Write(" uint color_b = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::ColorCombiner::b>("ss.cc"));
|
|
out.Write(" uint color_c = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::ColorCombiner::c>("ss.cc"));
|
|
out.Write(" uint color_d = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::ColorCombiner::d>("ss.cc"));
|
|
|
|
out.Write(" uint color_bias = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::ColorCombiner::bias>("ss.cc"));
|
|
out.Write(" bool color_op = bool({});\n",
|
|
BitfieldExtract<&TevStageCombiner::ColorCombiner::op>("ss.cc"));
|
|
out.Write(" bool color_clamp = bool({});\n",
|
|
BitfieldExtract<&TevStageCombiner::ColorCombiner::clamp>("ss.cc"));
|
|
out.Write(" uint color_scale = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::ColorCombiner::scale>("ss.cc"));
|
|
out.Write(" uint color_dest = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::ColorCombiner::dest>("ss.cc"));
|
|
|
|
out.Write(
|
|
" uint color_compare_op = color_scale << 1 | uint(color_op);\n"
|
|
"\n"
|
|
" int3 color_A = selectColorInput(s, ss, {0}colors_0, {0}colors_1, color_a) & "
|
|
"int3(255, 255, 255);\n"
|
|
" int3 color_B = selectColorInput(s, ss, {0}colors_0, {0}colors_1, color_b) & "
|
|
"int3(255, 255, 255);\n"
|
|
" int3 color_C = selectColorInput(s, ss, {0}colors_0, {0}colors_1, color_c) & "
|
|
"int3(255, 255, 255);\n"
|
|
" int3 color_D = selectColorInput(s, ss, {0}colors_0, {0}colors_1, color_d); // 10 "
|
|
"bits + sign\n"
|
|
"\n", // TODO: do we need to sign extend?
|
|
color_input_prefix);
|
|
out.Write(
|
|
" int3 color;\n"
|
|
" if (color_bias != 3u) {{ // Normal mode\n"
|
|
" color = tevLerp3(color_A, color_B, color_C, color_D, color_bias, color_op, "
|
|
"color_scale);\n"
|
|
" }} else {{ // Compare mode\n"
|
|
" // op 6 and 7 do a select per color channel\n"
|
|
" if (color_compare_op == 6u) {{\n"
|
|
" // TevCompareMode::RGB8, TevComparison::GT\n"
|
|
" color.r = (color_A.r > color_B.r) ? color_C.r : 0;\n"
|
|
" color.g = (color_A.g > color_B.g) ? color_C.g : 0;\n"
|
|
" color.b = (color_A.b > color_B.b) ? color_C.b : 0;\n"
|
|
" }} else if (color_compare_op == 7u) {{\n"
|
|
" // TevCompareMode::RGB8, TevComparison::EQ\n"
|
|
" color.r = (color_A.r == color_B.r) ? color_C.r : 0;\n"
|
|
" color.g = (color_A.g == color_B.g) ? color_C.g : 0;\n"
|
|
" color.b = (color_A.b == color_B.b) ? color_C.b : 0;\n"
|
|
" }} else {{\n"
|
|
" // The remaining ops do one compare which selects all 3 channels\n"
|
|
" color = tevCompare(color_compare_op, color_A, color_B) ? color_C : int3(0, 0, "
|
|
"0);\n"
|
|
" }}\n"
|
|
" color = color_D + color;\n"
|
|
" }}\n"
|
|
"\n"
|
|
" // Clamp result\n"
|
|
" if (color_clamp)\n"
|
|
" color = clamp(color, 0, 255);\n"
|
|
" else\n"
|
|
" color = clamp(color, -1024, 1023);\n"
|
|
"\n"
|
|
" // Write result to the correct input register of the next stage\n");
|
|
WriteSwitch(out, api_type, "color_dest", tev_c_set_table, 6, true);
|
|
out.Write("\n");
|
|
|
|
// Alpha combiner
|
|
out.Write(" // Alpha Combiner\n");
|
|
out.Write(" uint alpha_a = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::AlphaCombiner::a>("ss.ac"));
|
|
out.Write(" uint alpha_b = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::AlphaCombiner::b>("ss.ac"));
|
|
out.Write(" uint alpha_c = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::AlphaCombiner::c>("ss.ac"));
|
|
out.Write(" uint alpha_d = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::AlphaCombiner::d>("ss.ac"));
|
|
|
|
out.Write(" uint alpha_bias = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::AlphaCombiner::bias>("ss.ac"));
|
|
out.Write(" bool alpha_op = bool({});\n",
|
|
BitfieldExtract<&TevStageCombiner::AlphaCombiner::op>("ss.ac"));
|
|
out.Write(" bool alpha_clamp = bool({});\n",
|
|
BitfieldExtract<&TevStageCombiner::AlphaCombiner::clamp>("ss.ac"));
|
|
out.Write(" uint alpha_scale = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::AlphaCombiner::scale>("ss.ac"));
|
|
out.Write(" uint alpha_dest = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::AlphaCombiner::dest>("ss.ac"));
|
|
|
|
out.Write(
|
|
" uint alpha_compare_op = alpha_scale << 1 | uint(alpha_op);\n"
|
|
"\n"
|
|
" int alpha_A = 0;\n"
|
|
" int alpha_B = 0;\n"
|
|
" if (alpha_bias != 3u || alpha_compare_op > 5u) {{\n"
|
|
" // Small optimisation here: alpha_A and alpha_B are unused by compare ops 0-5\n"
|
|
" alpha_A = selectAlphaInput(s, ss, {0}colors_0, {0}colors_1, alpha_a) & 255;\n"
|
|
" alpha_B = selectAlphaInput(s, ss, {0}colors_0, {0}colors_1, alpha_b) & 255;\n"
|
|
" }};\n"
|
|
" int alpha_C = selectAlphaInput(s, ss, {0}colors_0, {0}colors_1, alpha_c) & 255;\n"
|
|
" int alpha_D = selectAlphaInput(s, ss, {0}colors_0, {0}colors_1, alpha_d); // 10 bits "
|
|
"+ sign\n"
|
|
"\n", // TODO: do we need to sign extend?
|
|
color_input_prefix);
|
|
out.Write("\n"
|
|
" int alpha;\n"
|
|
" if (alpha_bias != 3u) {{ // Normal mode\n"
|
|
" alpha = tevLerp(alpha_A, alpha_B, alpha_C, alpha_D, alpha_bias, alpha_op, "
|
|
"alpha_scale);\n"
|
|
" }} else {{ // Compare mode\n"
|
|
" if (alpha_compare_op == 6u) {{\n"
|
|
" // TevCompareMode::A8, TevComparison::GT\n"
|
|
" alpha = (alpha_A > alpha_B) ? alpha_C : 0;\n"
|
|
" }} else if (alpha_compare_op == 7u) {{\n"
|
|
" // TevCompareMode::A8, TevComparison::EQ\n"
|
|
" alpha = (alpha_A == alpha_B) ? alpha_C : 0;\n"
|
|
" }} else {{\n"
|
|
" // All remaining alpha compare ops actually compare the color channels\n"
|
|
" alpha = tevCompare(alpha_compare_op, color_A, color_B) ? alpha_C : 0;\n"
|
|
" }}\n"
|
|
" alpha = alpha_D + alpha;\n"
|
|
" }}\n"
|
|
"\n"
|
|
" // Clamp result\n"
|
|
" if (alpha_clamp)\n"
|
|
" alpha = clamp(alpha, 0, 255);\n"
|
|
" else\n"
|
|
" alpha = clamp(alpha, -1024, 1023);\n"
|
|
"\n"
|
|
" // Write result to the correct input register of the next stage\n");
|
|
WriteSwitch(out, api_type, "alpha_dest", tev_a_set_table, 6, true);
|
|
out.Write(" }}\n"
|
|
" }} // Main TEV loop\n"
|
|
"\n");
|
|
|
|
// Select the output color and alpha registers from the last stage.
|
|
out.Write(" int4 TevResult;\n");
|
|
out.Write(
|
|
" TevResult.xyz = getTevReg(s, {}).xyz;\n",
|
|
BitfieldExtract<&TevStageCombiner::ColorCombiner::dest>("bpmem_combiners(num_stages).x"));
|
|
out.Write(
|
|
" TevResult.w = getTevReg(s, {}).w;\n",
|
|
BitfieldExtract<&TevStageCombiner::AlphaCombiner::dest>("bpmem_combiners(num_stages).y"));
|
|
|
|
out.Write(" TevResult &= 255;\n\n");
|
|
|
|
if (host_config.fast_depth_calc)
|
|
{
|
|
if (!host_config.backend_reversed_depth_range)
|
|
out.Write(" int zCoord = int((1.0 - rawpos.z) * 16777216.0);\n");
|
|
else
|
|
out.Write(" int zCoord = int(rawpos.z * 16777216.0);\n");
|
|
out.Write(" zCoord = clamp(zCoord, 0, 0xFFFFFF);\n"
|
|
"\n");
|
|
}
|
|
else
|
|
{
|
|
out.Write("\tint zCoord = " I_ZBIAS "[1].x + int((clipPos.z / clipPos.w) * float(" I_ZBIAS
|
|
"[1].y));\n");
|
|
}
|
|
|
|
// ===========
|
|
// ZFreeze
|
|
// ===========
|
|
|
|
if (per_pixel_depth)
|
|
{
|
|
// Zfreeze forces early depth off
|
|
out.Write(" // ZFreeze\n"
|
|
" if ((bpmem_genmode & {}u) != 0u) {{\n",
|
|
1 << GenMode().zfreeze.StartBit());
|
|
out.Write(" float2 screenpos = rawpos.xy * " I_EFBSCALE ".xy;\n");
|
|
if (api_type == APIType::OpenGL)
|
|
{
|
|
out.Write(" // OpenGL has reversed vertical screenspace coordinates\n"
|
|
" screenpos.y = 528.0 - screenpos.y;\n");
|
|
}
|
|
out.Write(" zCoord = int(" I_ZSLOPE ".z + " I_ZSLOPE ".x * screenpos.x + " I_ZSLOPE
|
|
".y * screenpos.y);\n"
|
|
" }}\n"
|
|
"\n");
|
|
}
|
|
|
|
// =================
|
|
// Depth Texture
|
|
// =================
|
|
|
|
out.Write(" // Depth Texture\n"
|
|
" int early_zCoord = zCoord;\n"
|
|
" if (bpmem_ztex_op != 0u) {{\n"
|
|
" int ztex = int(" I_ZBIAS "[1].w); // fixed bias\n"
|
|
"\n"
|
|
" // Whatever texture was in our last stage, it's now our depth texture\n"
|
|
" ztex += idot(s.TexColor.xyzw, " I_ZBIAS "[0].xyzw);\n"
|
|
" ztex += (bpmem_ztex_op == 1u) ? zCoord : 0;\n"
|
|
" zCoord = ztex & 0xFFFFFF;\n"
|
|
" }}\n"
|
|
"\n");
|
|
|
|
if (per_pixel_depth)
|
|
{
|
|
out.Write(" // If early depth is enabled, write to zbuffer before depth textures\n"
|
|
" // If early depth isn't enabled, we write to the zbuffer here\n"
|
|
" int zbuffer_zCoord = bpmem_late_ztest ? zCoord : early_zCoord;\n");
|
|
if (!host_config.backend_reversed_depth_range)
|
|
out.Write(" depth = 1.0 - float(zbuffer_zCoord) / 16777216.0;\n");
|
|
else
|
|
out.Write(" depth = float(zbuffer_zCoord) / 16777216.0;\n");
|
|
}
|
|
|
|
out.Write(" // Alpha Test\n");
|
|
|
|
if (early_depth && DriverDetails::HasBug(DriverDetails::BUG_BROKEN_DISCARD_WITH_EARLY_Z))
|
|
{
|
|
// Instead of using discard, fetch the framebuffer's color value and use it as the output
|
|
// for this fragment.
|
|
out.Write(
|
|
" #define discard_fragment {{ real_ocol0 = float4(initial_ocol0.xyz, 1.0); return; }}\n");
|
|
}
|
|
else
|
|
{
|
|
out.Write(" #define discard_fragment discard\n");
|
|
}
|
|
|
|
out.Write(" if (bpmem_alphaTest != 0u) {{\n"
|
|
" bool comp0 = alphaCompare(TevResult.a, " I_ALPHA ".r, {});\n",
|
|
BitfieldExtract<&AlphaTest::comp0>("bpmem_alphaTest"));
|
|
out.Write(" bool comp1 = alphaCompare(TevResult.a, " I_ALPHA ".g, {});\n",
|
|
BitfieldExtract<&AlphaTest::comp1>("bpmem_alphaTest"));
|
|
out.Write("\n"
|
|
" // These if statements are written weirdly to work around intel and Qualcomm "
|
|
"bugs with handling booleans.\n"
|
|
" switch ({}) {{\n",
|
|
BitfieldExtract<&AlphaTest::logic>("bpmem_alphaTest"));
|
|
out.Write(" case 0u: // AND\n"
|
|
" if (comp0 && comp1) break; else discard_fragment; break;\n"
|
|
" case 1u: // OR\n"
|
|
" if (comp0 || comp1) break; else discard_fragment; break;\n"
|
|
" case 2u: // XOR\n"
|
|
" if (comp0 != comp1) break; else discard_fragment; break;\n"
|
|
" case 3u: // XNOR\n"
|
|
" if (comp0 == comp1) break; else discard_fragment; break;\n"
|
|
" }}\n"
|
|
" }}\n"
|
|
"\n");
|
|
|
|
out.Write(" // Hardware testing indicates that an alpha of 1 can pass an alpha test,\n"
|
|
" // but doesn't do anything in blending\n"
|
|
" if (TevResult.a == 1) TevResult.a = 0;\n");
|
|
// =========
|
|
// Dithering
|
|
// =========
|
|
out.Write(" if (bpmem_dither) {{\n"
|
|
" // Flipper uses a standard 2x2 Bayer Matrix for 6 bit dithering\n"
|
|
" // Here the matrix is encoded into the two factor constants\n"
|
|
" int2 dither = int2(rawpos.xy) & 1;\n"
|
|
" TevResult.rgb = (TevResult.rgb - (TevResult.rgb >> 6)) + abs(dither.y * 3 - "
|
|
"dither.x * 2);\n"
|
|
" }}\n\n");
|
|
|
|
// =========
|
|
// Fog
|
|
// =========
|
|
|
|
// FIXME: Fog is implemented the same as ShaderGen, but ShaderGen's fog is all hacks.
|
|
// Should be fixed point, and should not make guesses about Range-Based adjustments.
|
|
out.Write(" // Fog\n"
|
|
" uint fog_function = {};\n",
|
|
BitfieldExtract<&FogParam3::fsel>("bpmem_fogParam3"));
|
|
out.Write(" if (fog_function != {:s}) {{\n", FogType::Off);
|
|
out.Write(" // TODO: This all needs to be converted from float to fixed point\n"
|
|
" float ze;\n"
|
|
" if ({} == 0u) {{\n",
|
|
BitfieldExtract<&FogParam3::proj>("bpmem_fogParam3"));
|
|
out.Write(" // perspective\n"
|
|
" // ze = A/(B - (Zs >> B_SHF)\n"
|
|
" ze = (" I_FOGF ".x * 16777216.0) / float(" I_FOGI ".y - (zCoord >> " I_FOGI
|
|
".w));\n"
|
|
" }} else {{\n"
|
|
" // orthographic\n"
|
|
" // ze = a*Zs (here, no B_SHF)\n"
|
|
" ze = " I_FOGF ".x * float(zCoord) / 16777216.0;\n"
|
|
" }}\n"
|
|
"\n"
|
|
" if (bool({})) {{\n",
|
|
BitfieldExtract<&FogRangeParams::RangeBase::Enabled>("bpmem_fogRangeBase"));
|
|
out.Write(" // x_adjust = sqrt((x-center)^2 + k^2)/k\n"
|
|
" // ze *= x_adjust\n"
|
|
" float offset = (2.0 * (rawpos.x / " I_FOGF ".w)) - 1.0 - " I_FOGF ".z;\n"
|
|
" float floatindex = clamp(9.0 - abs(offset) * 9.0, 0.0, 9.0);\n"
|
|
" uint indexlower = uint(floatindex);\n"
|
|
" uint indexupper = indexlower + 1u;\n"
|
|
" float klower = " I_FOGRANGE "[indexlower >> 2u][indexlower & 3u];\n"
|
|
" float kupper = " I_FOGRANGE "[indexupper >> 2u][indexupper & 3u];\n"
|
|
" float k = lerp(klower, kupper, frac(floatindex));\n"
|
|
" float x_adjust = sqrt(offset * offset + k * k) / k;\n"
|
|
" ze *= x_adjust;\n"
|
|
" }}\n"
|
|
"\n"
|
|
" float fog = clamp(ze - " I_FOGF ".y, 0.0, 1.0);\n"
|
|
"\n");
|
|
out.Write(" if (fog_function >= {:s}) {{\n", FogType::Exp);
|
|
out.Write(" switch (fog_function) {{\n"
|
|
" case {:s}:\n"
|
|
" fog = 1.0 - exp2(-8.0 * fog);\n"
|
|
" break;\n",
|
|
FogType::Exp);
|
|
out.Write(" case {:s}:\n"
|
|
" fog = 1.0 - exp2(-8.0 * fog * fog);\n"
|
|
" break;\n",
|
|
FogType::ExpSq);
|
|
out.Write(" case {:s}:\n"
|
|
" fog = exp2(-8.0 * (1.0 - fog));\n"
|
|
" break;\n",
|
|
FogType::BackwardsExp);
|
|
out.Write(" case {:s}:\n"
|
|
" fog = 1.0 - fog;\n"
|
|
" fog = exp2(-8.0 * fog * fog);\n"
|
|
" break;\n",
|
|
FogType::BackwardsExpSq);
|
|
out.Write(" }}\n"
|
|
" }}\n"
|
|
"\n"
|
|
" int ifog = iround(fog * 256.0);\n"
|
|
" TevResult.rgb = (TevResult.rgb * (256 - ifog) + " I_FOGCOLOR ".rgb * ifog) >> 8;\n"
|
|
" }}\n"
|
|
"\n");
|
|
|
|
if (use_framebuffer_fetch)
|
|
{
|
|
static constexpr std::array<const char*, 16> logic_op_mode{
|
|
"int4(0, 0, 0, 0)", // CLEAR
|
|
"TevResult & fb_value", // AND
|
|
"TevResult & ~fb_value", // AND_REVERSE
|
|
"TevResult", // COPY
|
|
"~TevResult & fb_value", // AND_INVERTED
|
|
"fb_value", // NOOP
|
|
"TevResult ^ fb_value", // XOR
|
|
"TevResult | fb_value", // OR
|
|
"~(TevResult | fb_value)", // NOR
|
|
"~(TevResult ^ fb_value)", // EQUIV
|
|
"~fb_value", // INVERT
|
|
"TevResult | ~fb_value", // OR_REVERSE
|
|
"~TevResult", // COPY_INVERTED
|
|
"~TevResult | fb_value", // OR_INVERTED
|
|
"~(TevResult & fb_value)", // NAND
|
|
"int4(255, 255, 255, 255)", // SET
|
|
};
|
|
|
|
out.Write(" // Logic Ops\n"
|
|
" if (logic_op_enable) {{\n"
|
|
" int4 fb_value = iround(initial_ocol0 * 255.0);"
|
|
" switch (logic_op_mode) {{\n");
|
|
for (size_t i = 0; i < logic_op_mode.size(); i++)
|
|
{
|
|
out.Write(" case {}u: TevResult = {}; break;\n", i, logic_op_mode[i]);
|
|
}
|
|
|
|
out.Write(" }}\n"
|
|
" TevResult &= 0xff;\n"
|
|
" }}\n");
|
|
}
|
|
|
|
// Some backends require that the shader outputs be uint when writing to a uint render target for
|
|
// logic op.
|
|
if (uid_data->uint_output)
|
|
{
|
|
out.Write(" if (bpmem_rgba6_format)\n"
|
|
" ocol0 = uint4(TevResult & 0xFC);\n"
|
|
" else\n"
|
|
" ocol0 = uint4(TevResult);\n"
|
|
"\n");
|
|
}
|
|
else
|
|
{
|
|
out.Write(" if (bpmem_rgba6_format)\n"
|
|
" ocol0.rgb = float3(TevResult.rgb >> 2) / 63.0;\n"
|
|
" else\n"
|
|
" ocol0.rgb = float3(TevResult.rgb) / 255.0;\n"
|
|
"\n"
|
|
" if (bpmem_dstalpha != 0u)\n");
|
|
out.Write(" ocol0.a = float({} >> 2) / 63.0;\n",
|
|
BitfieldExtract<&ConstantAlpha::alpha>("bpmem_dstalpha"));
|
|
out.Write(" else\n"
|
|
" ocol0.a = float(TevResult.a >> 2) / 63.0;\n"
|
|
" \n");
|
|
|
|
if (use_dual_source || use_framebuffer_fetch)
|
|
{
|
|
out.Write(" // Dest alpha override (dual source blending)\n"
|
|
" // Colors will be blended against the alpha from ocol1 and\n"
|
|
" // the alpha from ocol0 will be written to the framebuffer.\n"
|
|
" ocol1 = float4(0.0, 0.0, 0.0, float(TevResult.a) / 255.0);\n");
|
|
}
|
|
}
|
|
|
|
if (bounding_box)
|
|
{
|
|
out.Write(" if (bpmem_bounding_box) {{\n"
|
|
" UpdateBoundingBox(rawpos.xy);\n"
|
|
" }}\n");
|
|
}
|
|
|
|
if (use_framebuffer_fetch)
|
|
{
|
|
using Common::EnumMap;
|
|
|
|
static constexpr EnumMap<std::string_view, SrcBlendFactor::InvDstAlpha> blendSrcFactor{
|
|
"blend_src.rgb = float3(0,0,0);", // ZERO
|
|
"blend_src.rgb = float3(1,1,1);", // ONE
|
|
"blend_src.rgb = initial_ocol0.rgb;", // DSTCLR
|
|
"blend_src.rgb = float3(1,1,1) - initial_ocol0.rgb;", // INVDSTCLR
|
|
"blend_src.rgb = src_color.aaa;", // SRCALPHA
|
|
"blend_src.rgb = float3(1,1,1) - src_color.aaa;", // INVSRCALPHA
|
|
"blend_src.rgb = initial_ocol0.aaa;", // DSTALPHA
|
|
"blend_src.rgb = float3(1,1,1) - initial_ocol0.aaa;", // INVDSTALPHA
|
|
};
|
|
static constexpr EnumMap<std::string_view, SrcBlendFactor::InvDstAlpha> blendSrcFactorAlpha{
|
|
"blend_src.a = 0.0;", // ZERO
|
|
"blend_src.a = 1.0;", // ONE
|
|
"blend_src.a = initial_ocol0.a;", // DSTCLR
|
|
"blend_src.a = 1.0 - initial_ocol0.a;", // INVDSTCLR
|
|
"blend_src.a = src_color.a;", // SRCALPHA
|
|
"blend_src.a = 1.0 - src_color.a;", // INVSRCALPHA
|
|
"blend_src.a = initial_ocol0.a;", // DSTALPHA
|
|
"blend_src.a = 1.0 - initial_ocol0.a;", // INVDSTALPHA
|
|
};
|
|
static constexpr EnumMap<std::string_view, DstBlendFactor::InvDstAlpha> blendDstFactor{
|
|
"blend_dst.rgb = float3(0,0,0);", // ZERO
|
|
"blend_dst.rgb = float3(1,1,1);", // ONE
|
|
"blend_dst.rgb = ocol0.rgb;", // SRCCLR
|
|
"blend_dst.rgb = float3(1,1,1) - ocol0.rgb;", // INVSRCCLR
|
|
"blend_dst.rgb = src_color.aaa;", // SRCALHA
|
|
"blend_dst.rgb = float3(1,1,1) - src_color.aaa;", // INVSRCALPHA
|
|
"blend_dst.rgb = initial_ocol0.aaa;", // DSTALPHA
|
|
"blend_dst.rgb = float3(1,1,1) - initial_ocol0.aaa;", // INVDSTALPHA
|
|
};
|
|
static constexpr EnumMap<std::string_view, DstBlendFactor::InvDstAlpha> blendDstFactorAlpha{
|
|
"blend_dst.a = 0.0;", // ZERO
|
|
"blend_dst.a = 1.0;", // ONE
|
|
"blend_dst.a = ocol0.a;", // SRCCLR
|
|
"blend_dst.a = 1.0 - ocol0.a;", // INVSRCCLR
|
|
"blend_dst.a = src_color.a;", // SRCALPHA
|
|
"blend_dst.a = 1.0 - src_color.a;", // INVSRCALPHA
|
|
"blend_dst.a = initial_ocol0.a;", // DSTALPHA
|
|
"blend_dst.a = 1.0 - initial_ocol0.a;", // INVDSTALPHA
|
|
};
|
|
|
|
out.Write(" if (blend_enable) {{\n"
|
|
" float4 src_color;\n"
|
|
" if (bpmem_dstalpha != 0u) {{\n"
|
|
" src_color = ocol1;\n"
|
|
" }} else {{\n"
|
|
" src_color = ocol0;\n"
|
|
" }}"
|
|
" float4 blend_src;\n");
|
|
WriteSwitch(out, api_type, "blend_src_factor", blendSrcFactor, 4, true);
|
|
WriteSwitch(out, api_type, "blend_src_factor_alpha", blendSrcFactorAlpha, 4, true);
|
|
|
|
out.Write(" float4 blend_dst;\n");
|
|
WriteSwitch(out, api_type, "blend_dst_factor", blendDstFactor, 4, true);
|
|
WriteSwitch(out, api_type, "blend_dst_factor_alpha", blendDstFactorAlpha, 4, true);
|
|
|
|
out.Write(
|
|
" float4 blend_result;\n"
|
|
" if (blend_subtract)\n"
|
|
" blend_result.rgb = initial_ocol0.rgb * blend_dst.rgb - ocol0.rgb * blend_src.rgb;\n"
|
|
" else\n"
|
|
" blend_result.rgb = initial_ocol0.rgb * blend_dst.rgb + ocol0.rgb * "
|
|
"blend_src.rgb;\n");
|
|
|
|
out.Write(" if (blend_subtract_alpha)\n"
|
|
" blend_result.a = initial_ocol0.a * blend_dst.a - ocol0.a * blend_src.a;\n"
|
|
" else\n"
|
|
" blend_result.a = initial_ocol0.a * blend_dst.a + ocol0.a * blend_src.a;\n");
|
|
|
|
out.Write(" real_ocol0 = blend_result;\n");
|
|
|
|
out.Write(" }} else {{\n"
|
|
" real_ocol0 = ocol0;\n"
|
|
" }}\n");
|
|
}
|
|
|
|
out.Write("}}\n"
|
|
"\n"
|
|
"int4 getRasColor(State s, StageState ss, float4 colors_0, float4 colors_1) {{\n"
|
|
" // Select Ras for stage\n"
|
|
" uint ras = {};\n",
|
|
BitfieldExtract<&TwoTevStageOrders::colorchan_even>("ss.order"));
|
|
out.Write(" if (ras < 2u) {{ // Lighting Channel 0 or 1\n"
|
|
" int4 color = iround(((ras == 0u) ? colors_0 : colors_1) * 255.0);\n"
|
|
" uint swap = {};\n",
|
|
BitfieldExtract<&TevStageCombiner::AlphaCombiner::rswap>("ss.ac"));
|
|
out.Write(" return Swizzle(swap, color);\n");
|
|
out.Write(" }} else if (ras == 5u) {{ // Alpha Bump\n"
|
|
" return int4(s.AlphaBump, s.AlphaBump, s.AlphaBump, s.AlphaBump);\n"
|
|
" }} else if (ras == 6u) {{ // Normalzied Alpha Bump\n"
|
|
" int normalized = s.AlphaBump | s.AlphaBump >> 5;\n"
|
|
" return int4(normalized, normalized, normalized, normalized);\n"
|
|
" }} else {{\n"
|
|
" return int4(0, 0, 0, 0);\n"
|
|
" }}\n"
|
|
"}}\n"
|
|
"\n"
|
|
"int4 getKonstColor(State s, StageState ss) {{\n"
|
|
" // Select Konst for stage\n"
|
|
" // TODO: a switch case might be better here than an dynamically"
|
|
" // indexed uniform lookup\n"
|
|
" uint tevksel = bpmem_tevksel(ss.stage>>1);\n"
|
|
" if ((ss.stage & 1u) == 0u)\n"
|
|
" return int4(konstLookup[{}].rgb, konstLookup[{}].a);\n",
|
|
BitfieldExtract<&TevKSel::kcsel_even>("tevksel"),
|
|
BitfieldExtract<&TevKSel::kasel_even>("tevksel"));
|
|
out.Write(" else\n"
|
|
" return int4(konstLookup[{}].rgb, konstLookup[{}].a);\n",
|
|
BitfieldExtract<&TevKSel::kcsel_odd>("tevksel"),
|
|
BitfieldExtract<&TevKSel::kasel_odd>("tevksel"));
|
|
out.Write("}}\n");
|
|
|
|
return out;
|
|
}
|
|
|
|
void EnumeratePixelShaderUids(const std::function<void(const PixelShaderUid&)>& callback)
|
|
{
|
|
PixelShaderUid uid;
|
|
|
|
for (u32 texgens = 0; texgens <= 8; texgens++)
|
|
{
|
|
pixel_ubershader_uid_data* const puid = uid.GetUidData();
|
|
puid->num_texgens = texgens;
|
|
|
|
for (u32 early_depth = 0; early_depth < 2; early_depth++)
|
|
{
|
|
puid->early_depth = early_depth != 0;
|
|
for (u32 per_pixel_depth = 0; per_pixel_depth < 2; per_pixel_depth++)
|
|
{
|
|
// Don't generate shaders where we have early depth tests enabled, and write gl_FragDepth.
|
|
if (early_depth && per_pixel_depth)
|
|
continue;
|
|
|
|
puid->per_pixel_depth = per_pixel_depth != 0;
|
|
for (u32 uint_output = 0; uint_output < 2; uint_output++)
|
|
{
|
|
puid->uint_output = uint_output;
|
|
for (u32 no_dual_src = 0; no_dual_src < 2; no_dual_src++)
|
|
{
|
|
puid->no_dual_src = no_dual_src;
|
|
callback(uid);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} // namespace UberShader
|