mirrors/citra
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
citra/src/video_core/swrasterizer/framebuffer.cpp
wwylele 47c0c87c47 video_core: clean format warnings
2017-11-01 12:35:32 +02:00

363 lines
12 KiB
C++
Raw Blame History

// 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",
static_cast<u32>(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",
static_cast<u32>(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",
static_cast<u32>(framebuffer.depth_format.Value()));
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)",
static_cast<u32>(framebuffer.depth_format.Value()));
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",
static_cast<u32>(framebuffer.depth_format.Value()));
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",
static_cast<u32>(framebuffer.depth_format.Value()));
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 0x%x", static_cast<u8>(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
Reference in a new issue View git blame Copy permalink