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renderer_software: Multi-thread processing
* Doubles the performance in most cases
This commit is contained in:
GPUCode
parent
d702915624
commit
531d280461
@ -95,8 +95,14 @@ private:
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} // Anonymous namespace
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// Kirby Blowout Blast relies on the combiner output of a previous draw
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// in order to render the sky correctly.
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static thread_local Common::Vec4<u8> combiner_output{};
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RasterizerSoftware::RasterizerSoftware(Memory::MemorySystem& memory_)
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: memory{memory_}, state{Pica::g_state}, regs{state.regs}, fb{memory, regs.framebuffer} {}
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: memory{memory_}, state{Pica::g_state}, regs{state.regs},
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num_sw_threads{std::max(std::thread::hardware_concurrency(), 2U)},
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sw_workers{num_sw_threads, "SwRenderer workers"}, fb{memory, regs.framebuffer} {}
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void RasterizerSoftware::AddTriangle(const Pica::Shader::OutputVertex& v0,
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const Pica::Shader::OutputVertex& v1,
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@ -295,161 +301,171 @@ void RasterizerSoftware::ProcessTriangle(const Vertex& v0, const Vertex& v1, con
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// Enter rasterization loop, starting at the center of the topleft bounding box corner.
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// TODO: Not sure if looping through x first might be faster
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for (u16 y = min_y + 8; y < max_y; y += 0x10) {
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for (u16 x = min_x + 8; x < max_x; x += 0x10) {
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// Do not process the pixel if it's inside the scissor box and the scissor mode is set
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// to Exclude.
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if (regs.rasterizer.scissor_test.mode == RasterizerRegs::ScissorMode::Exclude) {
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if (x >= scissor_x1 && x < scissor_x2 && y >= scissor_y1 && y < scissor_y2) {
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const auto process_scanline = [&, y] {
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for (u16 x = min_x + 8; x < max_x; x += 0x10) {
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// Do not process the pixel if it's inside the scissor box and the scissor mode is
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// set to Exclude.
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if (regs.rasterizer.scissor_test.mode == RasterizerRegs::ScissorMode::Exclude) {
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if (x >= scissor_x1 && x < scissor_x2 && y >= scissor_y1 && y < scissor_y2) {
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continue;
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}
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}
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// Calculate the barycentric coordinates w0, w1 and w2
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const s32 w0 = bias0 + SignedArea(vtxpos[1].xy(), vtxpos[2].xy(), {x, y});
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const s32 w1 = bias1 + SignedArea(vtxpos[2].xy(), vtxpos[0].xy(), {x, y});
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const s32 w2 = bias2 + SignedArea(vtxpos[0].xy(), vtxpos[1].xy(), {x, y});
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const s32 wsum = w0 + w1 + w2;
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// If current pixel is not covered by the current primitive
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if (w0 < 0 || w1 < 0 || w2 < 0) {
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continue;
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}
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}
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// Calculate the barycentric coordinates w0, w1 and w2
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const s32 w0 = bias0 + SignedArea(vtxpos[1].xy(), vtxpos[2].xy(), {x, y});
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const s32 w1 = bias1 + SignedArea(vtxpos[2].xy(), vtxpos[0].xy(), {x, y});
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const s32 w2 = bias2 + SignedArea(vtxpos[0].xy(), vtxpos[1].xy(), {x, y});
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const s32 wsum = w0 + w1 + w2;
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const auto baricentric_coordinates = Common::MakeVec(
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f24::FromFloat32(static_cast<f32>(w0)), f24::FromFloat32(static_cast<f32>(w1)),
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f24::FromFloat32(static_cast<f32>(w2)));
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const f24 interpolated_w_inverse =
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f24::One() / Common::Dot(w_inverse, baricentric_coordinates);
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// If current pixel is not covered by the current primitive
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if (w0 < 0 || w1 < 0 || w2 < 0) {
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continue;
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}
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// interpolated_z = z / w
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const float interpolated_z_over_w =
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(v0.screenpos[2].ToFloat32() * w0 + v1.screenpos[2].ToFloat32() * w1 +
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v2.screenpos[2].ToFloat32() * w2) /
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wsum;
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const auto baricentric_coordinates = Common::MakeVec(
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f24::FromFloat32(static_cast<f32>(w0)), f24::FromFloat32(static_cast<f32>(w1)),
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f24::FromFloat32(static_cast<f32>(w2)));
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const f24 interpolated_w_inverse =
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f24::One() / Common::Dot(w_inverse, baricentric_coordinates);
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// Not fully accurate. About 3 bits in precision are missing.
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// Z-Buffer (z / w * scale + offset)
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const float depth_scale =
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f24::FromRaw(regs.rasterizer.viewport_depth_range).ToFloat32();
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const float depth_offset =
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f24::FromRaw(regs.rasterizer.viewport_depth_near_plane).ToFloat32();
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float depth = interpolated_z_over_w * depth_scale + depth_offset;
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// interpolated_z = z / w
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const float interpolated_z_over_w =
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(v0.screenpos[2].ToFloat32() * w0 + v1.screenpos[2].ToFloat32() * w1 +
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v2.screenpos[2].ToFloat32() * w2) /
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wsum;
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// Potentially switch to W-Buffer
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if (regs.rasterizer.depthmap_enable ==
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Pica::RasterizerRegs::DepthBuffering::WBuffering) {
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// W-Buffer (z * scale + w * offset = (z / w * scale + offset) * w)
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depth *= interpolated_w_inverse.ToFloat32() * wsum;
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}
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// Not fully accurate. About 3 bits in precision are missing.
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// Z-Buffer (z / w * scale + offset)
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const float depth_scale =
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f24::FromRaw(regs.rasterizer.viewport_depth_range).ToFloat32();
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const float depth_offset =
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f24::FromRaw(regs.rasterizer.viewport_depth_near_plane).ToFloat32();
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float depth = interpolated_z_over_w * depth_scale + depth_offset;
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// Clamp the result
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depth = std::clamp(depth, 0.0f, 1.0f);
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// Potentially switch to W-Buffer
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if (regs.rasterizer.depthmap_enable ==
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Pica::RasterizerRegs::DepthBuffering::WBuffering) {
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// W-Buffer (z * scale + w * offset = (z / w * scale + offset) * w)
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depth *= interpolated_w_inverse.ToFloat32() * wsum;
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}
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// Clamp the result
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depth = std::clamp(depth, 0.0f, 1.0f);
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/**
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* Perspective correct attribute interpolation:
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* Attribute values cannot be calculated by simple linear interpolation since
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* they are not linear in screen space. For example, when interpolating a
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* texture coordinate across two vertices, something simple like
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* u = (u0*w0 + u1*w1)/(w0+w1)
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* will not work. However, the attribute value divided by the
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* clipspace w-coordinate (u/w) and and the inverse w-coordinate (1/w) are linear
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* in screenspace. Hence, we can linearly interpolate these two independently and
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* calculate the interpolated attribute by dividing the results.
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* I.e.
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* u_over_w = ((u0/v0.pos.w)*w0 + (u1/v1.pos.w)*w1)/(w0+w1)
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* one_over_w = (( 1/v0.pos.w)*w0 + ( 1/v1.pos.w)*w1)/(w0+w1)
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* u = u_over_w / one_over_w
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*
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* The generalization to three vertices is straightforward in baricentric coordinates.
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**/
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const auto get_interpolated_attribute = [&](f24 attr0, f24 attr1, f24 attr2) {
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auto attr_over_w = Common::MakeVec(attr0, attr1, attr2);
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f24 interpolated_attr_over_w = Common::Dot(attr_over_w, baricentric_coordinates);
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return interpolated_attr_over_w * interpolated_w_inverse;
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};
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const Common::Vec4<u8> primary_color{
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static_cast<u8>(
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round(get_interpolated_attribute(v0.color.r(), v1.color.r(), v2.color.r())
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.ToFloat32() *
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255)),
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static_cast<u8>(
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round(get_interpolated_attribute(v0.color.g(), v1.color.g(), v2.color.g())
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.ToFloat32() *
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255)),
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static_cast<u8>(
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round(get_interpolated_attribute(v0.color.b(), v1.color.b(), v2.color.b())
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.ToFloat32() *
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255)),
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static_cast<u8>(
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round(get_interpolated_attribute(v0.color.a(), v1.color.a(), v2.color.a())
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.ToFloat32() *
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255)),
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};
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std::array<Common::Vec2<f24>, 3> uv;
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uv[0].u() = get_interpolated_attribute(v0.tc0.u(), v1.tc0.u(), v2.tc0.u());
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uv[0].v() = get_interpolated_attribute(v0.tc0.v(), v1.tc0.v(), v2.tc0.v());
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uv[1].u() = get_interpolated_attribute(v0.tc1.u(), v1.tc1.u(), v2.tc1.u());
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uv[1].v() = get_interpolated_attribute(v0.tc1.v(), v1.tc1.v(), v2.tc1.v());
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uv[2].u() = get_interpolated_attribute(v0.tc2.u(), v1.tc2.u(), v2.tc2.u());
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uv[2].v() = get_interpolated_attribute(v0.tc2.v(), v1.tc2.v(), v2.tc2.v());
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// Sample bound texture units.
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const f24 tc0_w = get_interpolated_attribute(v0.tc0_w, v1.tc0_w, v2.tc0_w);
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const auto texture_color = TextureColor(uv, textures, tc0_w);
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Common::Vec4<u8> primary_fragment_color = {0, 0, 0, 0};
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Common::Vec4<u8> secondary_fragment_color = {0, 0, 0, 0};
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if (!regs.lighting.disable) {
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const auto normquat =
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Common::Quaternion<f32>{
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{get_interpolated_attribute(v0.quat.x, v1.quat.x, v2.quat.x).ToFloat32(),
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get_interpolated_attribute(v0.quat.y, v1.quat.y, v2.quat.y).ToFloat32(),
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get_interpolated_attribute(v0.quat.z, v1.quat.z, v2.quat.z).ToFloat32()},
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get_interpolated_attribute(v0.quat.w, v1.quat.w, v2.quat.w).ToFloat32(),
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}
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.Normalized();
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const Common::Vec3f view{
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get_interpolated_attribute(v0.view.x, v1.view.x, v2.view.x).ToFloat32(),
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get_interpolated_attribute(v0.view.y, v1.view.y, v2.view.y).ToFloat32(),
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get_interpolated_attribute(v0.view.z, v1.view.z, v2.view.z).ToFloat32(),
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/**
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* Perspective correct attribute interpolation:
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* Attribute values cannot be calculated by simple linear interpolation since
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* they are not linear in screen space. For example, when interpolating a
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* texture coordinate across two vertices, something simple like
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* u = (u0*w0 + u1*w1)/(w0+w1)
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* will not work. However, the attribute value divided by the
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* clipspace w-coordinate (u/w) and and the inverse w-coordinate (1/w) are linear
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* in screenspace. Hence, we can linearly interpolate these two independently and
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* calculate the interpolated attribute by dividing the results.
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* I.e.
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* u_over_w = ((u0/v0.pos.w)*w0 + (u1/v1.pos.w)*w1)/(w0+w1)
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* one_over_w = (( 1/v0.pos.w)*w0 + ( 1/v1.pos.w)*w1)/(w0+w1)
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* u = u_over_w / one_over_w
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*
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* The generalization to three vertices is straightforward in baricentric
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*coordinates.
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**/
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const auto get_interpolated_attribute = [&](f24 attr0, f24 attr1, f24 attr2) {
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auto attr_over_w = Common::MakeVec(attr0, attr1, attr2);
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f24 interpolated_attr_over_w =
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Common::Dot(attr_over_w, baricentric_coordinates);
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return interpolated_attr_over_w * interpolated_w_inverse;
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};
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std::tie(primary_fragment_color, secondary_fragment_color) = ComputeFragmentsColors(
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regs.lighting, state.lighting, normquat, view, texture_color);
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}
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// Write the TEV stages.
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WriteTevConfig(texture_color, tev_stages, primary_color, primary_fragment_color,
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secondary_fragment_color);
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const Common::Vec4<u8> primary_color{
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static_cast<u8>(
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round(get_interpolated_attribute(v0.color.r(), v1.color.r(), v2.color.r())
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.ToFloat32() *
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255)),
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static_cast<u8>(
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round(get_interpolated_attribute(v0.color.g(), v1.color.g(), v2.color.g())
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.ToFloat32() *
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255)),
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static_cast<u8>(
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round(get_interpolated_attribute(v0.color.b(), v1.color.b(), v2.color.b())
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.ToFloat32() *
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255)),
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static_cast<u8>(
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round(get_interpolated_attribute(v0.color.a(), v1.color.a(), v2.color.a())
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.ToFloat32() *
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255)),
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};
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const auto& output_merger = regs.framebuffer.output_merger;
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if (output_merger.fragment_operation_mode ==
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FramebufferRegs::FragmentOperationMode::Shadow) {
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u32 depth_int = static_cast<u32>(depth * 0xFFFFFF);
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// Use green color as the shadow intensity
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u8 stencil = combiner_output.y;
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fb.DrawShadowMapPixel(x >> 4, y >> 4, depth_int, stencil);
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// Skip the normal output merger pipeline if it is in shadow mode
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continue;
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}
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std::array<Common::Vec2<f24>, 3> uv;
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uv[0].u() = get_interpolated_attribute(v0.tc0.u(), v1.tc0.u(), v2.tc0.u());
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uv[0].v() = get_interpolated_attribute(v0.tc0.v(), v1.tc0.v(), v2.tc0.v());
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uv[1].u() = get_interpolated_attribute(v0.tc1.u(), v1.tc1.u(), v2.tc1.u());
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uv[1].v() = get_interpolated_attribute(v0.tc1.v(), v1.tc1.v(), v2.tc1.v());
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uv[2].u() = get_interpolated_attribute(v0.tc2.u(), v1.tc2.u(), v2.tc2.u());
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uv[2].v() = get_interpolated_attribute(v0.tc2.v(), v1.tc2.v(), v2.tc2.v());
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// Does alpha testing happen before or after stencil?
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if (!DoAlphaTest(combiner_output.a())) {
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continue;
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// Sample bound texture units.
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const f24 tc0_w = get_interpolated_attribute(v0.tc0_w, v1.tc0_w, v2.tc0_w);
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const auto texture_color = TextureColor(uv, textures, tc0_w);
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Common::Vec4<u8> primary_fragment_color = {0, 0, 0, 0};
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Common::Vec4<u8> secondary_fragment_color = {0, 0, 0, 0};
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if (!regs.lighting.disable) {
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const auto normquat =
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Common::Quaternion<f32>{
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{get_interpolated_attribute(v0.quat.x, v1.quat.x, v2.quat.x)
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.ToFloat32(),
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get_interpolated_attribute(v0.quat.y, v1.quat.y, v2.quat.y)
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.ToFloat32(),
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get_interpolated_attribute(v0.quat.z, v1.quat.z, v2.quat.z)
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.ToFloat32()},
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get_interpolated_attribute(v0.quat.w, v1.quat.w, v2.quat.w).ToFloat32(),
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}
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.Normalized();
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const Common::Vec3f view{
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get_interpolated_attribute(v0.view.x, v1.view.x, v2.view.x).ToFloat32(),
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get_interpolated_attribute(v0.view.y, v1.view.y, v2.view.y).ToFloat32(),
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get_interpolated_attribute(v0.view.z, v1.view.z, v2.view.z).ToFloat32(),
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};
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std::tie(primary_fragment_color, secondary_fragment_color) =
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ComputeFragmentsColors(regs.lighting, state.lighting, normquat, view,
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texture_color);
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}
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// Write the TEV stages.
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WriteTevConfig(texture_color, tev_stages, primary_color, primary_fragment_color,
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secondary_fragment_color);
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const auto& output_merger = regs.framebuffer.output_merger;
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if (output_merger.fragment_operation_mode ==
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FramebufferRegs::FragmentOperationMode::Shadow) {
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u32 depth_int = static_cast<u32>(depth * 0xFFFFFF);
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// Use green color as the shadow intensity
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u8 stencil = combiner_output.y;
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fb.DrawShadowMapPixel(x >> 4, y >> 4, depth_int, stencil);
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// Skip the normal output merger pipeline if it is in shadow mode
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continue;
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}
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// Does alpha testing happen before or after stencil?
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if (!DoAlphaTest(combiner_output.a())) {
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continue;
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}
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WriteFog(depth);
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if (!DoDepthStencilTest(x, y, depth)) {
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continue;
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}
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const auto result = PixelColor(x, y);
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if (regs.framebuffer.framebuffer.allow_color_write != 0) {
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fb.DrawPixel(x >> 4, y >> 4, result);
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}
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}
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WriteFog(combiner_output, depth);
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if (!DoDepthStencilTest(x, y, depth)) {
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continue;
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}
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const auto result = PixelColor(x, y, combiner_output);
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if (regs.framebuffer.framebuffer.allow_color_write != 0) {
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fb.DrawPixel(x >> 4, y >> 4, result);
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}
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}
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};
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sw_workers.QueueWork(std::move(process_scanline));
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}
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sw_workers.WaitForRequests();
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}
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std::array<Common::Vec4<u8>, 4> RasterizerSoftware::TextureColor(
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@ -572,8 +588,7 @@ std::array<Common::Vec4<u8>, 4> RasterizerSoftware::TextureColor(
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return texture_color;
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}
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Common::Vec4<u8> RasterizerSoftware::PixelColor(u16 x, u16 y,
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Common::Vec4<u8>& combiner_output) const {
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Common::Vec4<u8> RasterizerSoftware::PixelColor(u16 x, u16 y) const {
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const auto dest = fb.GetPixel(x >> 4, y >> 4);
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Common::Vec4<u8> blend_output = combiner_output;
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@ -768,7 +783,7 @@ void RasterizerSoftware::WriteTevConfig(
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}
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}
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void RasterizerSoftware::WriteFog(Common::Vec4<u8>& combiner_output, float depth) const {
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void RasterizerSoftware::WriteFog(float depth) const {
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/**
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* Apply fog combiner. Not fully accurate. We'd have to know what data type is used to
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* store the depth etc. Using float for now until we know more about Pica datatypes.
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@ -5,7 +5,7 @@
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#pragma once
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#include <span>
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#include "common/thread_worker.h"
|
||||
#include "video_core/rasterizer_interface.h"
|
||||
#include "video_core/regs_texturing.h"
|
||||
#include "video_core/renderer_software/sw_clipper.h"
|
||||
@ -52,7 +52,7 @@ private:
|
||||
std::span<const Pica::TexturingRegs::FullTextureConfig, 3> textures, f24 tc0_w) const;
|
||||
|
||||
/// Returns the final pixel color with blending or logic ops applied.
|
||||
Common::Vec4<u8> PixelColor(u16 x, u16 y, Common::Vec4<u8>& combiner_output) const;
|
||||
Common::Vec4<u8> PixelColor(u16 x, u16 y) const;
|
||||
|
||||
/// Emulates the TEV configuration and returns the combiner output.
|
||||
void WriteTevConfig(std::span<const Common::Vec4<u8>, 4> texture_color,
|
||||
@ -61,7 +61,7 @@ private:
|
||||
Common::Vec4<u8> secondary_fragment_color);
|
||||
|
||||
/// Blends fog to the combiner output if enabled.
|
||||
void WriteFog(Common::Vec4<u8>& combiner_output, float depth) const;
|
||||
void WriteFog(float depth) const;
|
||||
|
||||
/// Performs the alpha test. Returns false if the test failed.
|
||||
bool DoAlphaTest(u8 alpha) const;
|
||||
@ -73,10 +73,9 @@ private:
|
||||
Memory::MemorySystem& memory;
|
||||
Pica::State& state;
|
||||
const Pica::Regs& regs;
|
||||
size_t num_sw_threads;
|
||||
Common::ThreadWorker sw_workers;
|
||||
Framebuffer fb;
|
||||
// Kirby Blowout Blast relies on the combiner output of a previous draw
|
||||
// in order to render the sky correctly.
|
||||
Common::Vec4<u8> combiner_output{};
|
||||
};
|
||||
|
||||
} // namespace SwRenderer
|
||||
|
||||
Loading…
Reference in New Issue
Block a user