diff options
| -rw-r--r-- | src/video_core/regs_texturing.h | 27 | ||||
| -rw-r--r-- | src/video_core/swrasterizer/rasterizer.cpp | 53 |
2 files changed, 77 insertions, 3 deletions
diff --git a/src/video_core/regs_texturing.h b/src/video_core/regs_texturing.h index e4038b41b..3f5355fa9 100644 --- a/src/video_core/regs_texturing.h +++ b/src/video_core/regs_texturing.h @@ -133,7 +133,32 @@ struct TexturingRegs { BitField<16, 1, u32> clear_texture_cache; // TODO: unimplemented } main_config; TextureConfig texture0; - INSERT_PADDING_WORDS(0x8); + + enum class CubeFace { + PositiveX = 0, + NegativeX = 1, + PositiveY = 2, + NegativeY = 3, + PositiveZ = 4, + NegativeZ = 5, + }; + + BitField<0, 22, u32> cube_address[5]; + + PAddr GetCubePhysicalAddress(CubeFace face) const { + PAddr address = texture0.address; + if (face != CubeFace::PositiveX) { + // Bits [22:27] from the main texture address is shared with all cubemap additional + // addresses. + auto& face_addr = cube_address[static_cast<size_t>(face) - 1]; + address &= ~face_addr.mask; + address |= face_addr; + } + // A multiplier of 8 is also needed in the same way as the main address. + return address * 8; + } + + INSERT_PADDING_WORDS(0x3); BitField<0, 4, TextureFormat> texture0_format; BitField<0, 1, u32> fragment_lighting_enable; INSERT_PADDING_WORDS(0x1); diff --git a/src/video_core/swrasterizer/rasterizer.cpp b/src/video_core/swrasterizer/rasterizer.cpp index e9edf0360..8b7b1defb 100644 --- a/src/video_core/swrasterizer/rasterizer.cpp +++ b/src/video_core/swrasterizer/rasterizer.cpp @@ -5,6 +5,7 @@ #include <algorithm> #include <array> #include <cmath> +#include <tuple> #include "common/assert.h" #include "common/bit_field.h" #include "common/color.h" @@ -70,6 +71,49 @@ static int SignedArea(const Math::Vec2<Fix12P4>& vtx1, const Math::Vec2<Fix12P4> return Math::Cross(vec1, vec2).z; }; +/// Convert a 3D vector for cube map coordinates to 2D texture coordinates along with the face name +static std::tuple<float24, float24, PAddr> ConvertCubeCoord(float24 u, float24 v, float24 w, + const TexturingRegs& regs) { + const float abs_u = std::abs(u.ToFloat32()); + const float abs_v = std::abs(v.ToFloat32()); + const float abs_w = std::abs(w.ToFloat32()); + float24 x, y, z; + PAddr addr; + if (abs_u > abs_v && abs_u > abs_w) { + if (u > float24::FromFloat32(0)) { + addr = regs.GetCubePhysicalAddress(TexturingRegs::CubeFace::PositiveX); + y = -v; + } else { + addr = regs.GetCubePhysicalAddress(TexturingRegs::CubeFace::NegativeX); + y = v; + } + x = -w; + z = u; + } else if (abs_v > abs_w) { + if (v > float24::FromFloat32(0)) { + addr = regs.GetCubePhysicalAddress(TexturingRegs::CubeFace::PositiveY); + x = u; + } else { + addr = regs.GetCubePhysicalAddress(TexturingRegs::CubeFace::NegativeY); + x = -u; + } + y = w; + z = v; + } else { + if (w > float24::FromFloat32(0)) { + addr = regs.GetCubePhysicalAddress(TexturingRegs::CubeFace::PositiveZ); + y = -v; + } else { + addr = regs.GetCubePhysicalAddress(TexturingRegs::CubeFace::NegativeZ); + y = v; + } + x = u; + z = w; + } + const float24 half = float24::FromFloat32(0.5f); + return std::make_tuple(x / z * half + half, y / z * half + half, addr); +} + MICROPROFILE_DEFINE(GPU_Rasterization, "GPU", "Rasterization", MP_RGB(50, 50, 240)); /** @@ -284,10 +328,16 @@ static void ProcessTriangleInternal(const Vertex& v0, const Vertex& v1, const Ve // Only unit 0 respects the texturing type (according to 3DBrew) // TODO: Refactor so cubemaps and shadowmaps can be handled + PAddr texture_address = texture.config.GetPhysicalAddress(); if (i == 0) { switch (texture.config.type) { case TexturingRegs::TextureConfig::Texture2D: break; + case TexturingRegs::TextureConfig::TextureCube: { + auto w = GetInterpolatedAttribute(v0.tc0_w, v1.tc0_w, v2.tc0_w); + std::tie(u, v, texture_address) = ConvertCubeCoord(u, v, w, regs.texturing); + break; + } case TexturingRegs::TextureConfig::Projection2D: { auto tc0_w = GetInterpolatedAttribute(v0.tc0_w, v1.tc0_w, v2.tc0_w); u /= tc0_w; @@ -322,8 +372,7 @@ static void ProcessTriangleInternal(const Vertex& v0, const Vertex& v1, const Ve t = texture.config.height - 1 - GetWrappedTexCoord(texture.config.wrap_t, t, texture.config.height); - u8* texture_data = - Memory::GetPhysicalPointer(texture.config.GetPhysicalAddress()); + const u8* texture_data = Memory::GetPhysicalPointer(texture_address); auto info = Texture::TextureInfo::FromPicaRegister(texture.config, texture.format); |