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Diffstat (limited to 'src/video_core/swrasterizer/framebuffer.cpp')
-rw-r--r-- | src/video_core/swrasterizer/framebuffer.cpp | 360 |
1 files changed, 0 insertions, 360 deletions
diff --git a/src/video_core/swrasterizer/framebuffer.cpp b/src/video_core/swrasterizer/framebuffer.cpp deleted file mode 100644 index f34eab6cf9..0000000000 --- a/src/video_core/swrasterizer/framebuffer.cpp +++ /dev/null @@ -1,360 +0,0 @@ -// Copyright 2017 Citra Emulator Project -// Licensed under GPLv2 or any later version -// Refer to the license.txt file included. - -#include <algorithm> - -#include "common/assert.h" -#include "common/color.h" -#include "common/common_types.h" -#include "common/logging/log.h" -#include "common/math_util.h" -#include "common/vector_math.h" -#include "core/hw/gpu.h" -#include "core/memory.h" -#include "video_core/pica_state.h" -#include "video_core/regs_framebuffer.h" -#include "video_core/swrasterizer/framebuffer.h" -#include "video_core/utils.h" - -namespace Pica { -namespace Rasterizer { - -void DrawPixel(int x, int y, const Math::Vec4<u8>& color) { - const auto& framebuffer = g_state.regs.framebuffer.framebuffer; - const PAddr addr = framebuffer.GetColorBufferPhysicalAddress(); - - // Similarly to textures, the render framebuffer is laid out from bottom to top, too. - // NOTE: The framebuffer height register contains the actual FB height minus one. - y = framebuffer.height - y; - - const u32 coarse_y = y & ~7; - u32 bytes_per_pixel = - GPU::Regs::BytesPerPixel(GPU::Regs::PixelFormat(framebuffer.color_format.Value())); - u32 dst_offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + - coarse_y * framebuffer.width * bytes_per_pixel; - u8* dst_pixel = Memory::GetPhysicalPointer(addr) + dst_offset; - - switch (framebuffer.color_format) { - case FramebufferRegs::ColorFormat::RGBA8: - Color::EncodeRGBA8(color, dst_pixel); - break; - - case FramebufferRegs::ColorFormat::RGB8: - Color::EncodeRGB8(color, dst_pixel); - break; - - case FramebufferRegs::ColorFormat::RGB5A1: - Color::EncodeRGB5A1(color, dst_pixel); - break; - - case FramebufferRegs::ColorFormat::RGB565: - Color::EncodeRGB565(color, dst_pixel); - break; - - case FramebufferRegs::ColorFormat::RGBA4: - Color::EncodeRGBA4(color, dst_pixel); - break; - - default: - LOG_CRITICAL(Render_Software, "Unknown framebuffer color format %x", - framebuffer.color_format.Value()); - UNIMPLEMENTED(); - } -} - -const Math::Vec4<u8> GetPixel(int x, int y) { - const auto& framebuffer = g_state.regs.framebuffer.framebuffer; - const PAddr addr = framebuffer.GetColorBufferPhysicalAddress(); - - y = framebuffer.height - y; - - const u32 coarse_y = y & ~7; - u32 bytes_per_pixel = - GPU::Regs::BytesPerPixel(GPU::Regs::PixelFormat(framebuffer.color_format.Value())); - u32 src_offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + - coarse_y * framebuffer.width * bytes_per_pixel; - u8* src_pixel = Memory::GetPhysicalPointer(addr) + src_offset; - - switch (framebuffer.color_format) { - case FramebufferRegs::ColorFormat::RGBA8: - return Color::DecodeRGBA8(src_pixel); - - case FramebufferRegs::ColorFormat::RGB8: - return Color::DecodeRGB8(src_pixel); - - case FramebufferRegs::ColorFormat::RGB5A1: - return Color::DecodeRGB5A1(src_pixel); - - case FramebufferRegs::ColorFormat::RGB565: - return Color::DecodeRGB565(src_pixel); - - case FramebufferRegs::ColorFormat::RGBA4: - return Color::DecodeRGBA4(src_pixel); - - default: - LOG_CRITICAL(Render_Software, "Unknown framebuffer color format %x", - framebuffer.color_format.Value()); - UNIMPLEMENTED(); - } - - return {0, 0, 0, 0}; -} - -u32 GetDepth(int x, int y) { - const auto& framebuffer = g_state.regs.framebuffer.framebuffer; - const PAddr addr = framebuffer.GetDepthBufferPhysicalAddress(); - u8* depth_buffer = Memory::GetPhysicalPointer(addr); - - y = framebuffer.height - y; - - const u32 coarse_y = y & ~7; - u32 bytes_per_pixel = FramebufferRegs::BytesPerDepthPixel(framebuffer.depth_format); - u32 stride = framebuffer.width * bytes_per_pixel; - - u32 src_offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + coarse_y * stride; - u8* src_pixel = depth_buffer + src_offset; - - switch (framebuffer.depth_format) { - case FramebufferRegs::DepthFormat::D16: - return Color::DecodeD16(src_pixel); - case FramebufferRegs::DepthFormat::D24: - return Color::DecodeD24(src_pixel); - case FramebufferRegs::DepthFormat::D24S8: - return Color::DecodeD24S8(src_pixel).x; - default: - LOG_CRITICAL(HW_GPU, "Unimplemented depth format %u", framebuffer.depth_format); - UNIMPLEMENTED(); - return 0; - } -} - -u8 GetStencil(int x, int y) { - const auto& framebuffer = g_state.regs.framebuffer.framebuffer; - const PAddr addr = framebuffer.GetDepthBufferPhysicalAddress(); - u8* depth_buffer = Memory::GetPhysicalPointer(addr); - - y = framebuffer.height - y; - - const u32 coarse_y = y & ~7; - u32 bytes_per_pixel = Pica::FramebufferRegs::BytesPerDepthPixel(framebuffer.depth_format); - u32 stride = framebuffer.width * bytes_per_pixel; - - u32 src_offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + coarse_y * stride; - u8* src_pixel = depth_buffer + src_offset; - - switch (framebuffer.depth_format) { - case FramebufferRegs::DepthFormat::D24S8: - return Color::DecodeD24S8(src_pixel).y; - - default: - LOG_WARNING( - HW_GPU, - "GetStencil called for function which doesn't have a stencil component (format %u)", - framebuffer.depth_format); - return 0; - } -} - -void SetDepth(int x, int y, u32 value) { - const auto& framebuffer = g_state.regs.framebuffer.framebuffer; - const PAddr addr = framebuffer.GetDepthBufferPhysicalAddress(); - u8* depth_buffer = Memory::GetPhysicalPointer(addr); - - y = framebuffer.height - y; - - const u32 coarse_y = y & ~7; - u32 bytes_per_pixel = FramebufferRegs::BytesPerDepthPixel(framebuffer.depth_format); - u32 stride = framebuffer.width * bytes_per_pixel; - - u32 dst_offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + coarse_y * stride; - u8* dst_pixel = depth_buffer + dst_offset; - - switch (framebuffer.depth_format) { - case FramebufferRegs::DepthFormat::D16: - Color::EncodeD16(value, dst_pixel); - break; - - case FramebufferRegs::DepthFormat::D24: - Color::EncodeD24(value, dst_pixel); - break; - - case FramebufferRegs::DepthFormat::D24S8: - Color::EncodeD24X8(value, dst_pixel); - break; - - default: - LOG_CRITICAL(HW_GPU, "Unimplemented depth format %u", framebuffer.depth_format); - UNIMPLEMENTED(); - break; - } -} - -void SetStencil(int x, int y, u8 value) { - const auto& framebuffer = g_state.regs.framebuffer.framebuffer; - const PAddr addr = framebuffer.GetDepthBufferPhysicalAddress(); - u8* depth_buffer = Memory::GetPhysicalPointer(addr); - - y = framebuffer.height - y; - - const u32 coarse_y = y & ~7; - u32 bytes_per_pixel = Pica::FramebufferRegs::BytesPerDepthPixel(framebuffer.depth_format); - u32 stride = framebuffer.width * bytes_per_pixel; - - u32 dst_offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + coarse_y * stride; - u8* dst_pixel = depth_buffer + dst_offset; - - switch (framebuffer.depth_format) { - case Pica::FramebufferRegs::DepthFormat::D16: - case Pica::FramebufferRegs::DepthFormat::D24: - // Nothing to do - break; - - case Pica::FramebufferRegs::DepthFormat::D24S8: - Color::EncodeX24S8(value, dst_pixel); - break; - - default: - LOG_CRITICAL(HW_GPU, "Unimplemented depth format %u", framebuffer.depth_format); - UNIMPLEMENTED(); - break; - } -} - -u8 PerformStencilAction(FramebufferRegs::StencilAction action, u8 old_stencil, u8 ref) { - switch (action) { - case FramebufferRegs::StencilAction::Keep: - return old_stencil; - - case FramebufferRegs::StencilAction::Zero: - return 0; - - case FramebufferRegs::StencilAction::Replace: - return ref; - - case FramebufferRegs::StencilAction::Increment: - // Saturated increment - return std::min<u8>(old_stencil, 254) + 1; - - case FramebufferRegs::StencilAction::Decrement: - // Saturated decrement - return std::max<u8>(old_stencil, 1) - 1; - - case FramebufferRegs::StencilAction::Invert: - return ~old_stencil; - - case FramebufferRegs::StencilAction::IncrementWrap: - return old_stencil + 1; - - case FramebufferRegs::StencilAction::DecrementWrap: - return old_stencil - 1; - - default: - LOG_CRITICAL(HW_GPU, "Unknown stencil action %x", (int)action); - UNIMPLEMENTED(); - return 0; - } -} - -Math::Vec4<u8> EvaluateBlendEquation(const Math::Vec4<u8>& src, const Math::Vec4<u8>& srcfactor, - const Math::Vec4<u8>& dest, const Math::Vec4<u8>& destfactor, - FramebufferRegs::BlendEquation equation) { - Math::Vec4<int> result; - - auto src_result = (src * srcfactor).Cast<int>(); - auto dst_result = (dest * destfactor).Cast<int>(); - - switch (equation) { - case FramebufferRegs::BlendEquation::Add: - result = (src_result + dst_result) / 255; - break; - - case FramebufferRegs::BlendEquation::Subtract: - result = (src_result - dst_result) / 255; - break; - - case FramebufferRegs::BlendEquation::ReverseSubtract: - result = (dst_result - src_result) / 255; - break; - - // TODO: How do these two actually work? OpenGL doesn't include the blend factors in the - // min/max computations, but is this what the 3DS actually does? - case FramebufferRegs::BlendEquation::Min: - result.r() = std::min(src.r(), dest.r()); - result.g() = std::min(src.g(), dest.g()); - result.b() = std::min(src.b(), dest.b()); - result.a() = std::min(src.a(), dest.a()); - break; - - case FramebufferRegs::BlendEquation::Max: - result.r() = std::max(src.r(), dest.r()); - result.g() = std::max(src.g(), dest.g()); - result.b() = std::max(src.b(), dest.b()); - result.a() = std::max(src.a(), dest.a()); - break; - - default: - LOG_CRITICAL(HW_GPU, "Unknown RGB blend equation %x", equation); - UNIMPLEMENTED(); - } - - return Math::Vec4<u8>(MathUtil::Clamp(result.r(), 0, 255), MathUtil::Clamp(result.g(), 0, 255), - MathUtil::Clamp(result.b(), 0, 255), MathUtil::Clamp(result.a(), 0, 255)); -}; - -u8 LogicOp(u8 src, u8 dest, FramebufferRegs::LogicOp op) { - switch (op) { - case FramebufferRegs::LogicOp::Clear: - return 0; - - case FramebufferRegs::LogicOp::And: - return src & dest; - - case FramebufferRegs::LogicOp::AndReverse: - return src & ~dest; - - case FramebufferRegs::LogicOp::Copy: - return src; - - case FramebufferRegs::LogicOp::Set: - return 255; - - case FramebufferRegs::LogicOp::CopyInverted: - return ~src; - - case FramebufferRegs::LogicOp::NoOp: - return dest; - - case FramebufferRegs::LogicOp::Invert: - return ~dest; - - case FramebufferRegs::LogicOp::Nand: - return ~(src & dest); - - case FramebufferRegs::LogicOp::Or: - return src | dest; - - case FramebufferRegs::LogicOp::Nor: - return ~(src | dest); - - case FramebufferRegs::LogicOp::Xor: - return src ^ dest; - - case FramebufferRegs::LogicOp::Equiv: - return ~(src ^ dest); - - case FramebufferRegs::LogicOp::AndInverted: - return ~src & dest; - - case FramebufferRegs::LogicOp::OrReverse: - return src | ~dest; - - case FramebufferRegs::LogicOp::OrInverted: - return ~src | dest; - } - - UNREACHABLE(); -}; - -} // namespace Rasterizer -} // namespace Pica |