244 lines
8.4 KiB
C++
244 lines
8.4 KiB
C++
// Copyright 2009 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "VideoBackends/Software/SWVertexLoader.h"
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#include <cstddef>
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#include <limits>
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#include "Common/Assert.h"
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#include "Common/CommonTypes.h"
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#include "Common/Logging/Log.h"
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#include "Core/System.h"
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#include "VideoBackends/Software/NativeVertexFormat.h"
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#include "VideoBackends/Software/Rasterizer.h"
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#include "VideoBackends/Software/SWRenderer.h"
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#include "VideoBackends/Software/Tev.h"
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#include "VideoBackends/Software/TransformUnit.h"
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#include "VideoCommon/BoundingBox.h"
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#include "VideoCommon/CPMemory.h"
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#include "VideoCommon/DataReader.h"
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#include "VideoCommon/IndexGenerator.h"
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#include "VideoCommon/OpcodeDecoding.h"
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#include "VideoCommon/PixelShaderManager.h"
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#include "VideoCommon/Statistics.h"
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#include "VideoCommon/VertexLoaderBase.h"
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#include "VideoCommon/VertexLoaderManager.h"
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#include "VideoCommon/VertexShaderManager.h"
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#include "VideoCommon/VideoConfig.h"
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#include "VideoCommon/XFMemory.h"
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SWVertexLoader::SWVertexLoader() = default;
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SWVertexLoader::~SWVertexLoader() = default;
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DataReader SWVertexLoader::PrepareForAdditionalData(OpcodeDecoder::Primitive primitive, u32 count,
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u32 stride, bool cullall)
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{
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// The software renderer needs cullall to be false for zfreeze to work
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return VertexManagerBase::PrepareForAdditionalData(primitive, count, stride, false);
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}
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void SWVertexLoader::DrawCurrentBatch(u32 base_index, u32 num_indices, u32 base_vertex)
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{
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using OpcodeDecoder::Primitive;
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Primitive primitive_type = Primitive::GX_DRAW_QUADS;
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switch (m_current_primitive_type)
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{
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case PrimitiveType::Points:
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primitive_type = Primitive::GX_DRAW_POINTS;
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break;
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case PrimitiveType::Lines:
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primitive_type = Primitive::GX_DRAW_LINES;
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break;
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case PrimitiveType::Triangles:
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primitive_type = Primitive::GX_DRAW_TRIANGLES;
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break;
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case PrimitiveType::TriangleStrip:
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primitive_type = Primitive::GX_DRAW_TRIANGLE_STRIP;
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break;
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}
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// Flush bounding box here because software overrides the base function
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if (g_bounding_box->IsEnabled())
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g_bounding_box->Flush();
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m_setup_unit.Init(primitive_type);
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Rasterizer::SetTevKonstColors();
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for (u32 i = 0; i < m_index_generator.GetIndexLen(); i++)
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{
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const u16 index = m_cpu_index_buffer[i];
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memset(static_cast<void*>(&m_vertex), 0, sizeof(m_vertex));
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// parse the videocommon format to our own struct format (m_vertex)
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SetFormat();
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ParseVertex(VertexLoaderManager::GetCurrentVertexFormat()->GetVertexDeclaration(), index);
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// transform this vertex so that it can be used for rasterization (outVertex)
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OutputVertexData* outVertex = m_setup_unit.GetVertex();
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TransformUnit::TransformPosition(&m_vertex, outVertex);
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outVertex->normal = {};
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if (VertexLoaderManager::g_current_components & VB_HAS_NORMAL)
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TransformUnit::TransformNormal(&m_vertex, outVertex);
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TransformUnit::TransformColor(&m_vertex, outVertex);
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TransformUnit::TransformTexCoord(&m_vertex, outVertex);
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// assemble and rasterize the primitive
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m_setup_unit.SetupVertex();
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INCSTAT(g_stats.this_frame.num_vertices_loaded);
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}
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INCSTAT(g_stats.this_frame.num_drawn_objects);
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}
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void SWVertexLoader::SetFormat()
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{
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m_vertex.posMtx = xfmem.MatrixIndexA.PosNormalMtxIdx;
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m_vertex.texMtx[0] = xfmem.MatrixIndexA.Tex0MtxIdx;
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m_vertex.texMtx[1] = xfmem.MatrixIndexA.Tex1MtxIdx;
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m_vertex.texMtx[2] = xfmem.MatrixIndexA.Tex2MtxIdx;
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m_vertex.texMtx[3] = xfmem.MatrixIndexA.Tex3MtxIdx;
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m_vertex.texMtx[4] = xfmem.MatrixIndexB.Tex4MtxIdx;
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m_vertex.texMtx[5] = xfmem.MatrixIndexB.Tex5MtxIdx;
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m_vertex.texMtx[6] = xfmem.MatrixIndexB.Tex6MtxIdx;
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m_vertex.texMtx[7] = xfmem.MatrixIndexB.Tex7MtxIdx;
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}
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template <typename T, typename I>
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static T ReadNormalized(I value)
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{
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T casted = (T)value;
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if (!std::numeric_limits<T>::is_integer && std::numeric_limits<I>::is_integer)
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{
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// normalize if non-float is converted to a float
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casted *= (T)(1.0 / std::numeric_limits<I>::max());
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}
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return casted;
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}
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template <typename T, bool swap = false>
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static void ReadVertexAttribute(T* dst, DataReader src, const AttributeFormat& format,
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int base_component, int components, bool reverse)
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{
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if (format.enable)
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{
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src.Skip(format.offset);
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src.Skip(base_component * GetElementSize(format.type));
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int i;
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for (i = 0; i < std::min(format.components - base_component, components); i++)
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{
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int i_dst = reverse ? components - i - 1 : i;
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switch (format.type)
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{
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case ComponentFormat::UByte:
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dst[i_dst] = ReadNormalized<T, u8>(src.Read<u8, swap>());
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break;
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case ComponentFormat::Byte:
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dst[i_dst] = ReadNormalized<T, s8>(src.Read<s8, swap>());
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break;
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case ComponentFormat::UShort:
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dst[i_dst] = ReadNormalized<T, u16>(src.Read<u16, swap>());
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break;
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case ComponentFormat::Short:
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dst[i_dst] = ReadNormalized<T, s16>(src.Read<s16, swap>());
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break;
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case ComponentFormat::Float:
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case ComponentFormat::InvalidFloat5:
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case ComponentFormat::InvalidFloat6:
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case ComponentFormat::InvalidFloat7:
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dst[i_dst] = ReadNormalized<T, float>(src.Read<float, swap>());
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break;
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}
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ASSERT_MSG(VIDEO, !format.integer || (format.type < ComponentFormat::Float),
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"only non-float values are allowed to be streamed as integer");
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}
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for (; i < components; i++)
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{
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int i_dst = reverse ? components - i - 1 : i;
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dst[i_dst] = i == 3;
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}
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}
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}
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static void ParseColorAttributes(InputVertexData* dst, DataReader& src,
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const PortableVertexDeclaration& vdec)
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{
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const auto set_default_color = [](std::array<u8, 4>& color) {
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color[Tev::ALP_C] = g_ActiveConfig.iMissingColorValue & 0xFF;
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color[Tev::BLU_C] = (g_ActiveConfig.iMissingColorValue >> 8) & 0xFF;
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color[Tev::GRN_C] = (g_ActiveConfig.iMissingColorValue >> 16) & 0xFF;
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color[Tev::RED_C] = (g_ActiveConfig.iMissingColorValue >> 24) & 0xFF;
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};
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if (vdec.colors[0].enable)
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{
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// Use color0 for channel 0, and color1 for channel 1 if both colors 0 and 1 are present.
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ReadVertexAttribute<u8>(dst->color[0].data(), src, vdec.colors[0], 0, 4, true);
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if (vdec.colors[1].enable)
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ReadVertexAttribute<u8>(dst->color[1].data(), src, vdec.colors[1], 0, 4, true);
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else
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set_default_color(dst->color[1]);
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}
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else
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{
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// If only one of the color attributes is enabled, it is directed to color 0.
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if (vdec.colors[1].enable)
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ReadVertexAttribute<u8>(dst->color[0].data(), src, vdec.colors[1], 0, 4, true);
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else
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set_default_color(dst->color[0]);
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set_default_color(dst->color[1]);
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}
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}
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void SWVertexLoader::ParseVertex(const PortableVertexDeclaration& vdec, int index)
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{
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DataReader src(m_cpu_vertex_buffer.data(),
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m_cpu_vertex_buffer.data() + m_cpu_vertex_buffer.size());
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src.Skip(index * vdec.stride);
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ReadVertexAttribute<float>(&m_vertex.position[0], src, vdec.position, 0, 3, false);
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for (std::size_t i = 0; i < m_vertex.normal.size(); i++)
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{
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ReadVertexAttribute<float>(&m_vertex.normal[i][0], src, vdec.normals[i], 0, 3, false);
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}
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if (!vdec.normals[1].enable)
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{
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auto& system = Core::System::GetInstance();
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auto& vertex_shader_manager = system.GetVertexShaderManager();
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m_vertex.normal[1][0] = vertex_shader_manager.constants.cached_tangent[0];
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m_vertex.normal[1][1] = vertex_shader_manager.constants.cached_tangent[1];
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m_vertex.normal[1][2] = vertex_shader_manager.constants.cached_tangent[2];
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}
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if (!vdec.normals[2].enable)
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{
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auto& system = Core::System::GetInstance();
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auto& vertex_shader_manager = system.GetVertexShaderManager();
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m_vertex.normal[2][0] = vertex_shader_manager.constants.cached_binormal[0];
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m_vertex.normal[2][1] = vertex_shader_manager.constants.cached_binormal[1];
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m_vertex.normal[2][2] = vertex_shader_manager.constants.cached_binormal[2];
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}
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ParseColorAttributes(&m_vertex, src, vdec);
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for (std::size_t i = 0; i < m_vertex.texCoords.size(); i++)
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{
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ReadVertexAttribute<float>(m_vertex.texCoords[i].data(), src, vdec.texcoords[i], 0, 2, false);
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// the texmtr is stored as third component of the texCoord
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if (vdec.texcoords[i].components >= 3)
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{
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ReadVertexAttribute<u8>(&m_vertex.texMtx[i], src, vdec.texcoords[i], 2, 1, false);
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}
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}
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ReadVertexAttribute<u8>(&m_vertex.posMtx, src, vdec.posmtx, 0, 1, false);
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}
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