forked from dolphin-emu/dolphin
244 lines
8.1 KiB
C++
244 lines
8.1 KiB
C++
// Copyright 2009 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include "VideoBackends/Software/SWVertexLoader.h"
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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 "VideoBackends/Software/DebugUtil.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/Tev.h"
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#include "VideoBackends/Software/TransformUnit.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/VideoConfig.h"
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#include "VideoCommon/XFMemory.h"
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class NullNativeVertexFormat : public NativeVertexFormat
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{
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public:
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NullNativeVertexFormat(const PortableVertexDeclaration& _vtx_decl) { vtx_decl = _vtx_decl; }
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void SetupVertexPointers() override {}
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};
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NativeVertexFormat*
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SWVertexLoader::CreateNativeVertexFormat(const PortableVertexDeclaration& vtx_decl)
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{
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return new NullNativeVertexFormat(vtx_decl);
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}
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SWVertexLoader::SWVertexLoader() : LocalVBuffer(MAXVBUFFERSIZE), LocalIBuffer(MAXIBUFFERSIZE)
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{
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}
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SWVertexLoader::~SWVertexLoader()
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{
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}
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void SWVertexLoader::ResetBuffer(u32 stride)
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{
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m_cur_buffer_pointer = m_base_buffer_pointer = LocalVBuffer.data();
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m_end_buffer_pointer = m_cur_buffer_pointer + LocalVBuffer.size();
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IndexGenerator::Start(GetIndexBuffer());
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}
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void SWVertexLoader::vFlush()
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{
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DebugUtil::OnObjectBegin();
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u8 primitiveType = 0;
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switch (m_current_primitive_type)
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{
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case PRIMITIVE_POINTS:
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primitiveType = GX_DRAW_POINTS;
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break;
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case PRIMITIVE_LINES:
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primitiveType = GX_DRAW_LINES;
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break;
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case PRIMITIVE_TRIANGLES:
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primitiveType = g_ActiveConfig.backend_info.bSupportsPrimitiveRestart ? GX_DRAW_TRIANGLE_STRIP :
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GX_DRAW_TRIANGLES;
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break;
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}
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m_SetupUnit.Init(primitiveType);
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// set all states with are stored within video sw
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for (int i = 0; i < 4; i++)
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{
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Rasterizer::SetTevReg(i, Tev::RED_C, PixelShaderManager::constants.kcolors[i][0]);
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Rasterizer::SetTevReg(i, Tev::GRN_C, PixelShaderManager::constants.kcolors[i][1]);
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Rasterizer::SetTevReg(i, Tev::BLU_C, PixelShaderManager::constants.kcolors[i][2]);
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Rasterizer::SetTevReg(i, Tev::ALP_C, PixelShaderManager::constants.kcolors[i][3]);
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}
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for (u32 i = 0; i < IndexGenerator::GetIndexLen(); i++)
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{
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u16 index = LocalIBuffer[i];
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if (index == 0xffff)
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{
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// primitive restart
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m_SetupUnit.Init(primitiveType);
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continue;
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}
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memset(&m_Vertex, 0, sizeof(m_Vertex));
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// Super Mario Sunshine requires those to be zero for those debug boxes.
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memset(&m_Vertex.color, 0, sizeof(m_Vertex.color));
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// parse the videocommon format to our own struct format (m_Vertex)
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SetFormat(g_main_cp_state.last_id, primitiveType);
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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_SetupUnit.GetVertex();
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TransformUnit::TransformPosition(&m_Vertex, outVertex);
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memset(&outVertex->normal, 0, sizeof(outVertex->normal));
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if (VertexLoaderManager::g_current_components & VB_HAS_NRM0)
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{
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TransformUnit::TransformNormal(
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&m_Vertex, (VertexLoaderManager::g_current_components & VB_HAS_NRM2) != 0, outVertex);
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}
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TransformUnit::TransformColor(&m_Vertex, outVertex);
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TransformUnit::TransformTexCoord(&m_Vertex, outVertex, m_TexGenSpecialCase);
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// assemble and rasterize the primitive
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m_SetupUnit.SetupVertex();
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INCSTAT(stats.thisFrame.numVerticesLoaded)
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}
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DebugUtil::OnObjectEnd();
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}
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void SWVertexLoader::SetFormat(u8 attributeIndex, u8 primitiveType)
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{
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// matrix index from xf regs or cp memory?
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if (xfmem.MatrixIndexA.PosNormalMtxIdx != g_main_cp_state.matrix_index_a.PosNormalMtxIdx ||
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xfmem.MatrixIndexA.Tex0MtxIdx != g_main_cp_state.matrix_index_a.Tex0MtxIdx ||
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xfmem.MatrixIndexA.Tex1MtxIdx != g_main_cp_state.matrix_index_a.Tex1MtxIdx ||
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xfmem.MatrixIndexA.Tex2MtxIdx != g_main_cp_state.matrix_index_a.Tex2MtxIdx ||
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xfmem.MatrixIndexA.Tex3MtxIdx != g_main_cp_state.matrix_index_a.Tex3MtxIdx ||
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xfmem.MatrixIndexB.Tex4MtxIdx != g_main_cp_state.matrix_index_b.Tex4MtxIdx ||
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xfmem.MatrixIndexB.Tex5MtxIdx != g_main_cp_state.matrix_index_b.Tex5MtxIdx ||
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xfmem.MatrixIndexB.Tex6MtxIdx != g_main_cp_state.matrix_index_b.Tex6MtxIdx ||
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xfmem.MatrixIndexB.Tex7MtxIdx != g_main_cp_state.matrix_index_b.Tex7MtxIdx)
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{
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ERROR_LOG(VIDEO, "Matrix indices don't match");
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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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// special case if only pos and tex coord 0 and tex coord input is AB11
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// http://libogc.devkitpro.org/gx_8h.html#a55a426a3ff796db584302bddd829f002
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m_TexGenSpecialCase = VertexLoaderManager::g_current_components == VB_HAS_UV0 &&
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xfmem.texMtxInfo[0].projection == XF_TEXPROJ_ST;
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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 * (1 << (format.type >> 1)));
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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 VAR_UNSIGNED_BYTE:
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dst[i_dst] = ReadNormalized<T, u8>(src.Read<u8, swap>());
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break;
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case VAR_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 VAR_UNSIGNED_SHORT:
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dst[i_dst] = ReadNormalized<T, u16>(src.Read<u16, swap>());
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break;
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case VAR_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 VAR_FLOAT:
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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 != VAR_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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void SWVertexLoader::ParseVertex(const PortableVertexDeclaration& vdec, int index)
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{
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DataReader src(LocalVBuffer.data(), LocalVBuffer.data() + LocalVBuffer.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 (int i = 0; i < 3; 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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for (int i = 0; i < 2; i++)
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{
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ReadVertexAttribute<u8>(m_Vertex.color[i], src, vdec.colors[i], 0, 4, true);
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}
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for (int i = 0; i < 8; i++)
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{
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ReadVertexAttribute<float>(m_Vertex.texCoords[i], 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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