diff options
author | Tony Wasserka <neobrainx@gmail.com> | 2014-12-30 00:13:48 +0100 |
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committer | Tony Wasserka <neobrainx@gmail.com> | 2014-12-30 00:13:48 +0100 |
commit | b7e0b16354bc31521785247d7da3ad84f3829ea8 (patch) | |
tree | 9ed2e151b59536187946efb3fe34b51507b19c56 | |
parent | Merge pull request #361 from lioncash/moreqops (diff) | |
parent | Rasterizer: Pre-divide vertex attributes by W (diff) | |
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-rw-r--r-- | CMakeLists.txt | 4 | ||||
m--------- | externals/boost | 0 | ||||
-rw-r--r-- | src/video_core/clipper.cpp | 77 | ||||
-rw-r--r-- | src/video_core/debug_utils/debug_utils.cpp | 51 | ||||
-rw-r--r-- | src/video_core/pica.h | 20 | ||||
-rw-r--r-- | src/video_core/rasterizer.cpp | 28 | ||||
-rw-r--r-- | src/video_core/vertex_shader.cpp | 4 |
7 files changed, 104 insertions, 80 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 5bb87d50d..884520cef 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -41,11 +41,11 @@ else() message(STATUS "libpng not found. Some debugging features have been disabled.") endif() -find_package(Boost) +find_package(Boost 1.57.0) if (Boost_FOUND) include_directories(${Boost_INCLUDE_DIRS}) else() - message(STATUS "Boost not found, falling back to externals") + message(STATUS "Boost 1.57.0 or newer not found, falling back to externals") include_directories(externals/boost) endif() diff --git a/externals/boost b/externals/boost -Subproject b060148c08ae87a3a5809c4f48cb26ac667487a +Subproject 97052c28acb141dbf3c5e14114af99045344b69 diff --git a/src/video_core/clipper.cpp b/src/video_core/clipper.cpp index 0bcd0b895..1744066ba 100644 --- a/src/video_core/clipper.cpp +++ b/src/video_core/clipper.cpp @@ -2,7 +2,7 @@ // Licensed under GPLv2 or any later version // Refer to the license.txt file included. -#include <vector> +#include <boost/container/static_vector.hpp> #include "clipper.h" #include "pica.h" @@ -91,25 +91,31 @@ static void InitScreenCoordinates(OutputVertex& vtx) viewport.zscale = float24::FromRawFloat24(registers.viewport_depth_range); viewport.offset_z = float24::FromRawFloat24(registers.viewport_depth_far_plane); + float24 inv_w = float24::FromFloat32(1.f) / vtx.pos.w; + vtx.color *= inv_w; + vtx.tc0 *= inv_w; + vtx.tc1 *= inv_w; + vtx.tc2 *= inv_w; + vtx.pos.w = inv_w; + // TODO: Not sure why the viewport width needs to be divided by 2 but the viewport height does not - vtx.screenpos[0] = (vtx.pos.x / vtx.pos.w + float24::FromFloat32(1.0)) * viewport.halfsize_x + viewport.offset_x; - vtx.screenpos[1] = (vtx.pos.y / vtx.pos.w + float24::FromFloat32(1.0)) * viewport.halfsize_y + viewport.offset_y; - vtx.screenpos[2] = viewport.offset_z - vtx.pos.z / vtx.pos.w * viewport.zscale; + vtx.screenpos[0] = (vtx.pos.x * inv_w + float24::FromFloat32(1.0)) * viewport.halfsize_x + viewport.offset_x; + vtx.screenpos[1] = (vtx.pos.y * inv_w + float24::FromFloat32(1.0)) * viewport.halfsize_y + viewport.offset_y; + vtx.screenpos[2] = viewport.offset_z - vtx.pos.z * inv_w * viewport.zscale; } void ProcessTriangle(OutputVertex &v0, OutputVertex &v1, OutputVertex &v2) { - - // TODO (neobrain): - // The list of output vertices has some fixed maximum size, - // however I haven't taken the time to figure out what it is exactly. - // For now, we hence just assume a maximal size of 1000 vertices. - const size_t max_vertices = 1000; - std::vector<OutputVertex> buffer_vertices; - std::vector<OutputVertex*> output_list{ &v0, &v1, &v2 }; - - // Make sure to reserve space for all vertices. - // Without this, buffer reallocation would invalidate references. - buffer_vertices.reserve(max_vertices); + using boost::container::static_vector; + + // Clipping a planar n-gon against a plane will remove at least 1 vertex and introduces 2 at + // the new edge (or less in degenerate cases). As such, we can say that each clipping plane + // introduces at most 1 new vertex to the polygon. Since we start with a triangle and have a + // fixed 6 clipping planes, the maximum number of vertices of the clipped polygon is 3 + 6 = 9. + static const size_t MAX_VERTICES = 9; + static_vector<OutputVertex, MAX_VERTICES> buffer_a = { v0, v1, v2 }; + static_vector<OutputVertex, MAX_VERTICES> buffer_b; + auto* output_list = &buffer_a; + auto* input_list = &buffer_b; // Simple implementation of the Sutherland-Hodgman clipping algorithm. // TODO: Make this less inefficient (currently lots of useless buffering overhead happens here) @@ -120,48 +126,45 @@ void ProcessTriangle(OutputVertex &v0, OutputVertex &v1, OutputVertex &v2) { ClippingEdge(ClippingEdge::POS_Z, float24::FromFloat32(+1.0)), ClippingEdge(ClippingEdge::NEG_Z, float24::FromFloat32(-1.0)) }) { - const std::vector<OutputVertex*> input_list = output_list; - output_list.clear(); + std::swap(input_list, output_list); + output_list->clear(); - const OutputVertex* reference_vertex = input_list.back(); + const OutputVertex* reference_vertex = &input_list->back(); - for (const auto& vertex : input_list) { + for (const auto& vertex : *input_list) { // NOTE: This algorithm changes vertex order in some cases! - if (edge.IsInside(*vertex)) { + if (edge.IsInside(vertex)) { if (edge.IsOutSide(*reference_vertex)) { - buffer_vertices.push_back(edge.GetIntersection(*vertex, *reference_vertex)); - output_list.push_back(&(buffer_vertices.back())); + output_list->push_back(edge.GetIntersection(vertex, *reference_vertex)); } - output_list.push_back(vertex); + output_list->push_back(vertex); } else if (edge.IsInside(*reference_vertex)) { - buffer_vertices.push_back(edge.GetIntersection(*vertex, *reference_vertex)); - output_list.push_back(&(buffer_vertices.back())); + output_list->push_back(edge.GetIntersection(vertex, *reference_vertex)); } - - reference_vertex = vertex; + reference_vertex = &vertex; } // Need to have at least a full triangle to continue... - if (output_list.size() < 3) + if (output_list->size() < 3) return; } - InitScreenCoordinates(*(output_list[0])); - InitScreenCoordinates(*(output_list[1])); + InitScreenCoordinates((*output_list)[0]); + InitScreenCoordinates((*output_list)[1]); - for (size_t i = 0; i < output_list.size() - 2; i ++) { - OutputVertex& vtx0 = *(output_list[0]); - OutputVertex& vtx1 = *(output_list[i+1]); - OutputVertex& vtx2 = *(output_list[i+2]); + for (size_t i = 0; i < output_list->size() - 2; i ++) { + OutputVertex& vtx0 = (*output_list)[0]; + OutputVertex& vtx1 = (*output_list)[i+1]; + OutputVertex& vtx2 = (*output_list)[i+2]; InitScreenCoordinates(vtx2); LOG_TRACE(Render_Software, - "Triangle %lu/%lu (%lu buffer vertices) at position (%.3f, %.3f, %.3f, %.3f), " + "Triangle %lu/%lu at position (%.3f, %.3f, %.3f, %.3f), " "(%.3f, %.3f, %.3f, %.3f), (%.3f, %.3f, %.3f, %.3f) and " "screen position (%.2f, %.2f, %.2f), (%.2f, %.2f, %.2f), (%.2f, %.2f, %.2f)", - i,output_list.size(), buffer_vertices.size(), + i, output_list->size(), vtx0.pos.x.ToFloat32(), vtx0.pos.y.ToFloat32(), vtx0.pos.z.ToFloat32(), vtx0.pos.w.ToFloat32(), vtx1.pos.x.ToFloat32(), vtx1.pos.y.ToFloat32(), vtx1.pos.z.ToFloat32(), vtx1.pos.w.ToFloat32(), vtx2.pos.x.ToFloat32(), vtx2.pos.y.ToFloat32(), vtx2.pos.z.ToFloat32(), vtx2.pos.w.ToFloat32(), diff --git a/src/video_core/debug_utils/debug_utils.cpp b/src/video_core/debug_utils/debug_utils.cpp index 328386b7e..5921185a6 100644 --- a/src/video_core/debug_utils/debug_utils.cpp +++ b/src/video_core/debug_utils/debug_utils.cpp @@ -304,7 +304,6 @@ std::unique_ptr<PicaTrace> FinishPicaTracing() } const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const TextureInfo& info, bool disable_alpha) { - // Images are split into 8x8 tiles. Each tile is composed of four 4x4 subtiles each // of which is composed of four 2x2 subtiles each of which is composed of four texels. // Each structure is embedded into the next-bigger one in a diagonal pattern, e.g. @@ -323,41 +322,39 @@ const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const Texture // 02 03 06 07 18 19 22 23 // 00 01 04 05 16 17 20 21 - // TODO(neobrain): Not sure if this swizzling pattern is used for all textures. - // To be flexible in case different but similar patterns are used, we keep this - // somewhat inefficient code around for now. - int texel_index_within_tile = 0; - for (int block_size_index = 0; block_size_index < 3; ++block_size_index) { - int sub_tile_width = 1 << block_size_index; - int sub_tile_height = 1 << block_size_index; - - int sub_tile_index = (x & sub_tile_width) << block_size_index; - sub_tile_index += 2 * ((y & sub_tile_height) << block_size_index); - texel_index_within_tile += sub_tile_index; - } + const unsigned int block_width = 8; + const unsigned int block_height = 8; + + const unsigned int coarse_x = x & ~7; + const unsigned int coarse_y = y & ~7; - const int block_width = 8; - const int block_height = 8; + // Interleave the lower 3 bits of each coordinate to get the intra-block offsets, which are + // arranged in a Z-order curve. More details on the bit manipulation at: + // https://fgiesen.wordpress.com/2009/12/13/decoding-morton-codes/ + unsigned int i = (x | (y << 8)) & 0x0707; // ---- -210 + i = (i ^ (i << 2)) & 0x1313; // ---2 --10 + i = (i ^ (i << 1)) & 0x1515; // ---2 -1-0 + i = (i | (i >> 7)) & 0x3F; - int coarse_x = (x / block_width) * block_width; - int coarse_y = (y / block_height) * block_height; + source += coarse_y * info.stride; + const unsigned int offset = coarse_x * block_height + i; switch (info.format) { case Regs::TextureFormat::RGBA8: { - const u8* source_ptr = source + coarse_x * block_height * 4 + coarse_y * info.stride + texel_index_within_tile * 4; + const u8* source_ptr = source + offset * 4; return { source_ptr[3], source_ptr[2], source_ptr[1], disable_alpha ? (u8)255 : source_ptr[0] }; } case Regs::TextureFormat::RGB8: { - const u8* source_ptr = source + coarse_x * block_height * 3 + coarse_y * info.stride + texel_index_within_tile * 3; + const u8* source_ptr = source + offset * 3; return { source_ptr[2], source_ptr[1], source_ptr[0], 255 }; } case Regs::TextureFormat::RGBA5551: { - const u16 source_ptr = *(const u16*)(source + coarse_x * block_height * 2 + coarse_y * info.stride + texel_index_within_tile * 2); + const u16 source_ptr = *(const u16*)(source + offset * 2); u8 r = (source_ptr >> 11) & 0x1F; u8 g = ((source_ptr) >> 6) & 0x1F; u8 b = (source_ptr >> 1) & 0x1F; @@ -367,7 +364,7 @@ const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const Texture case Regs::TextureFormat::RGB565: { - const u16 source_ptr = *(const u16*)(source + coarse_x * block_height * 2 + coarse_y * info.stride + texel_index_within_tile * 2); + const u16 source_ptr = *(const u16*)(source + offset * 2); u8 r = (source_ptr >> 11) & 0x1F; u8 g = ((source_ptr) >> 5) & 0x3F; u8 b = (source_ptr) & 0x1F; @@ -376,7 +373,7 @@ const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const Texture case Regs::TextureFormat::RGBA4: { - const u8* source_ptr = source + coarse_x * block_height * 2 + coarse_y * info.stride + texel_index_within_tile * 2; + const u8* source_ptr = source + offset * 2; u8 r = source_ptr[1] >> 4; u8 g = source_ptr[1] & 0xFF; u8 b = source_ptr[0] >> 4; @@ -390,7 +387,7 @@ const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const Texture case Regs::TextureFormat::IA8: { - const u8* source_ptr = source + coarse_x * block_height * 2 + coarse_y * info.stride + texel_index_within_tile * 2; + const u8* source_ptr = source + offset * 2; // TODO: component order not verified @@ -404,13 +401,13 @@ const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const Texture case Regs::TextureFormat::I8: { - const u8* source_ptr = source + coarse_x * block_height + coarse_y * info.stride + texel_index_within_tile; + const u8* source_ptr = source + offset; return { *source_ptr, *source_ptr, *source_ptr, 255 }; } case Regs::TextureFormat::A8: { - const u8* source_ptr = source + coarse_x * block_height + coarse_y * info.stride + texel_index_within_tile; + const u8* source_ptr = source + offset; if (disable_alpha) { return { *source_ptr, *source_ptr, *source_ptr, 255 }; @@ -421,7 +418,7 @@ const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const Texture case Regs::TextureFormat::IA4: { - const u8* source_ptr = source + coarse_x * block_height / 2 + coarse_y * info.stride + texel_index_within_tile / 2; + const u8* source_ptr = source + offset / 2; // TODO: component order not verified @@ -440,7 +437,7 @@ const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const Texture case Regs::TextureFormat::A4: { - const u8* source_ptr = source + coarse_x * block_height / 2 + coarse_y * info.stride + texel_index_within_tile / 2; + const u8* source_ptr = source + offset / 2; // TODO: component order not verified diff --git a/src/video_core/pica.h b/src/video_core/pica.h index 89d97e4e9..38bac748c 100644 --- a/src/video_core/pica.h +++ b/src/video_core/pica.h @@ -757,6 +757,26 @@ struct float24 { return float24::FromFloat32(ToFloat32() - flt.ToFloat32()); } + float24& operator *= (const float24& flt) { + value *= flt.ToFloat32(); + return *this; + } + + float24& operator /= (const float24& flt) { + value /= flt.ToFloat32(); + return *this; + } + + float24& operator += (const float24& flt) { + value += flt.ToFloat32(); + return *this; + } + + float24& operator -= (const float24& flt) { + value -= flt.ToFloat32(); + return *this; + } + float24 operator - () const { return float24::FromFloat32(-ToFloat32()); } diff --git a/src/video_core/rasterizer.cpp b/src/video_core/rasterizer.cpp index df1f88c79..a80148872 100644 --- a/src/video_core/rasterizer.cpp +++ b/src/video_core/rasterizer.cpp @@ -106,6 +106,11 @@ void ProcessTriangle(const VertexShader::OutputVertex& v0, int bias1 = IsRightSideOrFlatBottomEdge(vtxpos[1].xy(), vtxpos[2].xy(), vtxpos[0].xy()) ? -1 : 0; int bias2 = IsRightSideOrFlatBottomEdge(vtxpos[2].xy(), vtxpos[0].xy(), vtxpos[1].xy()) ? -1 : 0; + auto w_inverse = Math::MakeVec(v0.pos.w, v1.pos.w, v2.pos.w); + + auto textures = registers.GetTextures(); + auto tev_stages = registers.GetTevStages(); + // TODO: Not sure if looping through x first might be faster for (u16 y = min_y; y < max_y; y += 0x10) { for (u16 x = min_x; x < max_x; x += 0x10) { @@ -129,6 +134,11 @@ void ProcessTriangle(const VertexShader::OutputVertex& v0, if (w0 < 0 || w1 < 0 || w2 < 0) continue; + auto baricentric_coordinates = Math::MakeVec(float24::FromFloat32(static_cast<float>(w0)), + float24::FromFloat32(static_cast<float>(w1)), + float24::FromFloat32(static_cast<float>(w2))); + float24 interpolated_w_inverse = float24::FromFloat32(1.0f) / Math::Dot(w_inverse, baricentric_coordinates); + // Perspective correct attribute interpolation: // Attribute values cannot be calculated by simple linear interpolation since // they are not linear in screen space. For example, when interpolating a @@ -145,19 +155,9 @@ void ProcessTriangle(const VertexShader::OutputVertex& v0, // // The generalization to three vertices is straightforward in baricentric coordinates. auto GetInterpolatedAttribute = [&](float24 attr0, float24 attr1, float24 attr2) { - auto attr_over_w = Math::MakeVec(attr0 / v0.pos.w, - attr1 / v1.pos.w, - attr2 / v2.pos.w); - auto w_inverse = Math::MakeVec(float24::FromFloat32(1.f) / v0.pos.w, - float24::FromFloat32(1.f) / v1.pos.w, - float24::FromFloat32(1.f) / v2.pos.w); - auto baricentric_coordinates = Math::MakeVec(float24::FromFloat32(static_cast<float>(w0)), - float24::FromFloat32(static_cast<float>(w1)), - float24::FromFloat32(static_cast<float>(w2))); - + auto attr_over_w = Math::MakeVec(attr0, attr1, attr2); float24 interpolated_attr_over_w = Math::Dot(attr_over_w, baricentric_coordinates); - float24 interpolated_w_inverse = Math::Dot(w_inverse, baricentric_coordinates); - return interpolated_attr_over_w / interpolated_w_inverse; + return interpolated_attr_over_w * interpolated_w_inverse; }; Math::Vec4<u8> primary_color{ @@ -177,7 +177,7 @@ void ProcessTriangle(const VertexShader::OutputVertex& v0, Math::Vec4<u8> texture_color[3]{}; for (int i = 0; i < 3; ++i) { - auto texture = registers.GetTextures()[i]; + const auto& texture = textures[i]; if (!texture.enabled) continue; @@ -219,7 +219,7 @@ void ProcessTriangle(const VertexShader::OutputVertex& v0, // with some basic arithmetic. Alpha combiners can be configured separately but work // analogously. Math::Vec4<u8> combiner_output; - for (auto tev_stage : registers.GetTevStages()) { + for (const auto& tev_stage : tev_stages) { using Source = Regs::TevStageConfig::Source; using ColorModifier = Regs::TevStageConfig::ColorModifier; using AlphaModifier = Regs::TevStageConfig::AlphaModifier; diff --git a/src/video_core/vertex_shader.cpp b/src/video_core/vertex_shader.cpp index e31bc3bc7..bed5081a0 100644 --- a/src/video_core/vertex_shader.cpp +++ b/src/video_core/vertex_shader.cpp @@ -469,6 +469,10 @@ OutputVertex RunShader(const InputVertex& input, int num_attributes) // Setup output register table OutputVertex ret; + // Zero output so that attributes which aren't output won't have denormals in them, which will + // slow us down later. + memset(&ret, 0, sizeof(ret)); + for (int i = 0; i < 7; ++i) { const auto& output_register_map = registers.vs_output_attributes[i]; |