diff options
Diffstat (limited to 'src/video_core/rasterizer.cpp')
| -rw-r--r-- | src/video_core/rasterizer.cpp | 175 |
1 files changed, 105 insertions, 70 deletions
diff --git a/src/video_core/rasterizer.cpp b/src/video_core/rasterizer.cpp index fd02aa652..65168f05a 100644 --- a/src/video_core/rasterizer.cpp +++ b/src/video_core/rasterizer.cpp @@ -3,23 +3,28 @@ // Refer to the license.txt file included. #include <algorithm> +#include <array> #include <cmath> +#include "common/assert.h" +#include "common/bit_field.h" #include "common/color.h" #include "common/common_types.h" +#include "common/logging/log.h" #include "common/math_util.h" #include "common/microprofile.h" -#include "common/profiler.h" +#include "common/vector_math.h" #include "core/memory.h" #include "core/hw/gpu.h" +#include "video_core/debug_utils/debug_utils.h" #include "video_core/pica.h" #include "video_core/pica_state.h" +#include "video_core/pica_types.h" #include "video_core/rasterizer.h" #include "video_core/utils.h" -#include "video_core/debug_utils/debug_utils.h" -#include "video_core/shader/shader_interpreter.h" +#include "video_core/shader/shader.h" namespace Pica { @@ -287,7 +292,6 @@ static int SignedArea (const Math::Vec2<Fix12P4>& vtx1, return Math::Cross(vec1, vec2).z; }; -static Common::Profiling::TimingCategory rasterization_category("Rasterization"); MICROPROFILE_DEFINE(GPU_Rasterization, "GPU", "Rasterization", MP_RGB(50, 50, 240)); /** @@ -300,7 +304,6 @@ static void ProcessTriangleInternal(const Shader::OutputVertex& v0, bool reversed = false) { const auto& regs = g_state.regs; - Common::Profiling::ScopeTimer timer(rasterization_category); MICROPROFILE_SCOPE(GPU_Rasterization); // vertex positions in rasterizer coordinates @@ -439,8 +442,33 @@ static void ProcessTriangleInternal(const Shader::OutputVertex& v0, DEBUG_ASSERT(0 != texture.config.address); - int s = (int)(uv[i].u() * float24::FromFloat32(static_cast<float>(texture.config.width))).ToFloat32(); - int t = (int)(uv[i].v() * float24::FromFloat32(static_cast<float>(texture.config.height))).ToFloat32(); + float24 u = uv[i].u(); + float24 v = uv[i].v(); + + // Only unit 0 respects the texturing type (according to 3DBrew) + // TODO: Refactor so cubemaps and shadowmaps can be handled + if (i == 0) { + switch(texture.config.type) { + case Regs::TextureConfig::Texture2D: + break; + case Regs::TextureConfig::Projection2D: { + auto tc0_w = GetInterpolatedAttribute(v0.tc0_w, v1.tc0_w, v2.tc0_w); + u /= tc0_w; + v /= tc0_w; + break; + } + default: + // TODO: Change to LOG_ERROR when more types are handled. + LOG_DEBUG(HW_GPU, "Unhandled texture type %x", (int)texture.config.type); + UNIMPLEMENTED(); + break; + } + } + + int s = (int)(u * float24::FromFloat32(static_cast<float>(texture.config.width))).ToFloat32(); + int t = (int)(v * float24::FromFloat32(static_cast<float>(texture.config.height))).ToFloat32(); + + static auto GetWrappedTexCoord = [](Regs::TextureConfig::WrapMode mode, int val, unsigned size) { switch (mode) { case Regs::TextureConfig::ClampToEdge: @@ -809,7 +837,8 @@ static void ProcessTriangleInternal(const Shader::OutputVertex& v0, auto UpdateStencil = [stencil_test, x, y, &old_stencil](Pica::Regs::StencilAction action) { u8 new_stencil = PerformStencilAction(action, old_stencil, stencil_test.reference_value); - SetStencil(x >> 4, y >> 4, (new_stencil & stencil_test.write_mask) | (old_stencil & ~stencil_test.write_mask)); + if (g_state.regs.framebuffer.allow_depth_stencil_write != 0) + SetStencil(x >> 4, y >> 4, (new_stencil & stencil_test.write_mask) | (old_stencil & ~stencil_test.write_mask)); }; if (stencil_action_enable) { @@ -858,10 +887,30 @@ static void ProcessTriangleInternal(const Shader::OutputVertex& v0, } } + // interpolated_z = z / w + float interpolated_z_over_w = (v0.screenpos[2].ToFloat32() * w0 + + v1.screenpos[2].ToFloat32() * w1 + + v2.screenpos[2].ToFloat32() * w2) / wsum; + + // Not fully accurate. About 3 bits in precision are missing. + // Z-Buffer (z / w * scale + offset) + float depth_scale = float24::FromRaw(regs.viewport_depth_range).ToFloat32(); + float depth_offset = float24::FromRaw(regs.viewport_depth_near_plane).ToFloat32(); + float depth = interpolated_z_over_w * depth_scale + depth_offset; + + // Potentially switch to W-Buffer + if (regs.depthmap_enable == Pica::Regs::DepthBuffering::WBuffering) { + + // W-Buffer (z * scale + w * offset = (z / w * scale + offset) * w) + depth *= interpolated_w_inverse.ToFloat32() * wsum; + } + + // Clamp the result + depth = MathUtil::Clamp(depth, 0.0f, 1.0f); + + // Convert float to integer unsigned num_bits = Regs::DepthBitsPerPixel(regs.framebuffer.depth_format); - u32 z = (u32)((v0.screenpos[2].ToFloat32() * w0 + - v1.screenpos[2].ToFloat32() * w1 + - v2.screenpos[2].ToFloat32() * w2) * ((1 << num_bits) - 1) / wsum); + u32 z = (u32)(depth * ((1 << num_bits) - 1)); if (output_merger.depth_test_enable) { u32 ref_z = GetDepth(x >> 4, y >> 4); @@ -909,7 +958,7 @@ static void ProcessTriangleInternal(const Shader::OutputVertex& v0, } } - if (output_merger.depth_write_enable) + if (regs.framebuffer.allow_depth_stencil_write != 0 && output_merger.depth_write_enable) SetDepth(x >> 4, y >> 4, z); // The stencil depth_pass action is executed even if depth testing is disabled @@ -922,92 +971,72 @@ static void ProcessTriangleInternal(const Shader::OutputVertex& v0, if (output_merger.alphablend_enable) { auto params = output_merger.alpha_blending; - auto LookupFactorRGB = [&](Regs::BlendFactor factor) -> Math::Vec3<u8> { + auto LookupFactor = [&](unsigned channel, Regs::BlendFactor factor) -> u8 { + DEBUG_ASSERT(channel < 4); + + const Math::Vec4<u8> blend_const = { + static_cast<u8>(output_merger.blend_const.r), + static_cast<u8>(output_merger.blend_const.g), + static_cast<u8>(output_merger.blend_const.b), + static_cast<u8>(output_merger.blend_const.a) + }; + switch (factor) { - case Regs::BlendFactor::Zero : - return Math::Vec3<u8>(0, 0, 0); + case Regs::BlendFactor::Zero: + return 0; - case Regs::BlendFactor::One : - return Math::Vec3<u8>(255, 255, 255); + case Regs::BlendFactor::One: + return 255; case Regs::BlendFactor::SourceColor: - return combiner_output.rgb(); + return combiner_output[channel]; case Regs::BlendFactor::OneMinusSourceColor: - return Math::Vec3<u8>(255 - combiner_output.r(), 255 - combiner_output.g(), 255 - combiner_output.b()); + return 255 - combiner_output[channel]; case Regs::BlendFactor::DestColor: - return dest.rgb(); + return dest[channel]; case Regs::BlendFactor::OneMinusDestColor: - return Math::Vec3<u8>(255 - dest.r(), 255 - dest.g(), 255 - dest.b()); + return 255 - dest[channel]; case Regs::BlendFactor::SourceAlpha: - return Math::Vec3<u8>(combiner_output.a(), combiner_output.a(), combiner_output.a()); + return combiner_output.a(); case Regs::BlendFactor::OneMinusSourceAlpha: - return Math::Vec3<u8>(255 - combiner_output.a(), 255 - combiner_output.a(), 255 - combiner_output.a()); + return 255 - combiner_output.a(); case Regs::BlendFactor::DestAlpha: - return Math::Vec3<u8>(dest.a(), dest.a(), dest.a()); + return dest.a(); case Regs::BlendFactor::OneMinusDestAlpha: - return Math::Vec3<u8>(255 - dest.a(), 255 - dest.a(), 255 - dest.a()); + return 255 - dest.a(); case Regs::BlendFactor::ConstantColor: - return Math::Vec3<u8>(output_merger.blend_const.r, output_merger.blend_const.g, output_merger.blend_const.b); + return blend_const[channel]; case Regs::BlendFactor::OneMinusConstantColor: - return Math::Vec3<u8>(255 - output_merger.blend_const.r, 255 - output_merger.blend_const.g, 255 - output_merger.blend_const.b); + return 255 - blend_const[channel]; case Regs::BlendFactor::ConstantAlpha: - return Math::Vec3<u8>(output_merger.blend_const.a, output_merger.blend_const.a, output_merger.blend_const.a); + return blend_const.a(); case Regs::BlendFactor::OneMinusConstantAlpha: - return Math::Vec3<u8>(255 - output_merger.blend_const.a, 255 - output_merger.blend_const.a, 255 - output_merger.blend_const.a); + return 255 - blend_const.a(); - default: - LOG_CRITICAL(HW_GPU, "Unknown color blend factor %x", factor); - UNIMPLEMENTED(); - break; - } - - return {}; - }; - - auto LookupFactorA = [&](Regs::BlendFactor factor) -> u8 { - switch (factor) { - case Regs::BlendFactor::Zero: - return 0; - - case Regs::BlendFactor::One: - return 255; - - case Regs::BlendFactor::SourceAlpha: - return combiner_output.a(); - - case Regs::BlendFactor::OneMinusSourceAlpha: - return 255 - combiner_output.a(); - - case Regs::BlendFactor::DestAlpha: - return dest.a(); - - case Regs::BlendFactor::OneMinusDestAlpha: - return 255 - dest.a(); - - case Regs::BlendFactor::ConstantAlpha: - return output_merger.blend_const.a; - - case Regs::BlendFactor::OneMinusConstantAlpha: - return 255 - output_merger.blend_const.a; + case Regs::BlendFactor::SourceAlphaSaturate: + // Returns 1.0 for the alpha channel + if (channel == 3) + return 255; + return std::min(combiner_output.a(), static_cast<u8>(255 - dest.a())); default: - LOG_CRITICAL(HW_GPU, "Unknown alpha blend factor %x", factor); + LOG_CRITICAL(HW_GPU, "Unknown blend factor %x", factor); UNIMPLEMENTED(); break; } - return {}; + return combiner_output[channel]; }; static auto EvaluateBlendEquation = [](const Math::Vec4<u8>& src, const Math::Vec4<u8>& srcfactor, @@ -1059,10 +1088,15 @@ static void ProcessTriangleInternal(const Shader::OutputVertex& v0, MathUtil::Clamp(result.a(), 0, 255)); }; - auto srcfactor = Math::MakeVec(LookupFactorRGB(params.factor_source_rgb), - LookupFactorA(params.factor_source_a)); - auto dstfactor = Math::MakeVec(LookupFactorRGB(params.factor_dest_rgb), - LookupFactorA(params.factor_dest_a)); + auto srcfactor = Math::MakeVec(LookupFactor(0, params.factor_source_rgb), + LookupFactor(1, params.factor_source_rgb), + LookupFactor(2, params.factor_source_rgb), + LookupFactor(3, params.factor_source_a)); + + auto dstfactor = Math::MakeVec(LookupFactor(0, params.factor_dest_rgb), + LookupFactor(1, params.factor_dest_rgb), + LookupFactor(2, params.factor_dest_rgb), + LookupFactor(3, params.factor_dest_a)); blend_output = EvaluateBlendEquation(combiner_output, srcfactor, dest, dstfactor, params.blend_equation_rgb); blend_output.a() = EvaluateBlendEquation(combiner_output, srcfactor, dest, dstfactor, params.blend_equation_a).a(); @@ -1133,7 +1167,8 @@ static void ProcessTriangleInternal(const Shader::OutputVertex& v0, output_merger.alpha_enable ? blend_output.a() : dest.a() }; - DrawPixel(x >> 4, y >> 4, result); + if (regs.framebuffer.allow_color_write != 0) + DrawPixel(x >> 4, y >> 4, result); } } } |