diff --git a/src/citra_qt/debugger/graphics_framebuffer.cpp b/src/citra_qt/debugger/graphics_framebuffer.cpp index 5bd6c0235..d621d7204 100644 --- a/src/citra_qt/debugger/graphics_framebuffer.cpp +++ b/src/citra_qt/debugger/graphics_framebuffer.cpp @@ -27,6 +27,7 @@ GraphicsFramebufferWidget::GraphicsFramebufferWidget(std::shared_ptraddItem(tr("Active Render Target")); + framebuffer_source_list->addItem(tr("Active Depth Buffer")); framebuffer_source_list->addItem(tr("Custom")); framebuffer_source_list->setCurrentIndex(static_cast(framebuffer_source)); @@ -49,6 +50,9 @@ GraphicsFramebufferWidget::GraphicsFramebufferWidget(std::shared_ptraddItem(tr("RGB5A1")); framebuffer_format_control->addItem(tr("RGB565")); framebuffer_format_control->addItem(tr("RGBA4")); + framebuffer_format_control->addItem(tr("D16")); + framebuffer_format_control->addItem(tr("D24")); + framebuffer_format_control->addItem(tr("D24S8")); // TODO: This QLabel should shrink the image to the available space rather than just expanding... framebuffer_picture_label = new QLabel; @@ -172,8 +176,7 @@ void GraphicsFramebufferWidget::OnUpdate() { // TODO: Store a reference to the registers in the debug context instead of accessing them directly... - auto framebuffer = Pica::registers.framebuffer; - using Framebuffer = decltype(framebuffer); + const auto& framebuffer = Pica::registers.framebuffer; framebuffer_address = framebuffer.GetColorBufferPhysicalAddress(); framebuffer_width = framebuffer.GetWidth(); @@ -184,6 +187,18 @@ void GraphicsFramebufferWidget::OnUpdate() break; } + case Source::DepthBuffer: + { + const auto& framebuffer = Pica::registers.framebuffer; + + framebuffer_address = framebuffer.GetDepthBufferPhysicalAddress(); + framebuffer_width = framebuffer.GetWidth(); + framebuffer_height = framebuffer.GetHeight(); + framebuffer_format = Format::D16; + + break; + } + case Source::Custom: { // Keep user-specified values @@ -197,15 +212,16 @@ void GraphicsFramebufferWidget::OnUpdate() // TODO: Implement a good way to visualize alpha components! // TODO: Unify this decoding code with the texture decoder - u32 bytes_per_pixel = GPU::Regs::BytesPerPixel(GPU::Regs::PixelFormat(framebuffer_format)); + u32 bytes_per_pixel = GraphicsFramebufferWidget::BytesPerPixel(framebuffer_format); QImage decoded_image(framebuffer_width, framebuffer_height, QImage::Format_ARGB32); - u8* color_buffer = Memory::GetPointer(Pica::PAddrToVAddr(framebuffer_address)); + u8* buffer = Memory::GetPointer(Pica::PAddrToVAddr(framebuffer_address)); + for (unsigned int y = 0; y < framebuffer_height; ++y) { for (unsigned int x = 0; x < framebuffer_width; ++x) { const u32 coarse_y = y & ~7; u32 offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + coarse_y * framebuffer_width * bytes_per_pixel; - const u8* pixel = color_buffer + offset; + const u8* pixel = buffer + offset; Math::Vec4 color = { 0, 0, 0, 0 }; switch (framebuffer_format) { @@ -224,6 +240,29 @@ void GraphicsFramebufferWidget::OnUpdate() case Format::RGBA4: color = Color::DecodeRGBA4(pixel); break; + case Format::D16: + { + u32 data = Color::DecodeD16(pixel); + color.r() = data & 0xFF; + color.g() = (data >> 8) & 0xFF; + break; + } + case Format::D24: + { + u32 data = Color::DecodeD24(pixel); + color.r() = data & 0xFF; + color.g() = (data >> 8) & 0xFF; + color.b() = (data >> 16) & 0xFF; + break; + } + case Format::D24S8: + { + Math::Vec2 data = Color::DecodeD24S8(pixel); + color.r() = data.x & 0xFF; + color.g() = (data.x >> 8) & 0xFF; + color.b() = (data.x >> 16) & 0xFF; + break; + } default: qDebug() << "Unknown fb color format " << static_cast(framebuffer_format); break; @@ -240,3 +279,19 @@ void GraphicsFramebufferWidget::OnUpdate() framebuffer_format_control->setCurrentIndex(static_cast(framebuffer_format)); framebuffer_picture_label->setPixmap(pixmap); } + +u32 GraphicsFramebufferWidget::BytesPerPixel(GraphicsFramebufferWidget::Format format) { + switch (format) { + case Format::RGBA8: + case Format::D24S8: + return 4; + case Format::RGB8: + case Format::D24: + return 3; + case Format::RGB5A1: + case Format::RGB565: + case Format::RGBA4: + case Format::D16: + return 2; + } +} diff --git a/src/citra_qt/debugger/graphics_framebuffer.h b/src/citra_qt/debugger/graphics_framebuffer.h index 15ebd1f7d..4cb396ffe 100644 --- a/src/citra_qt/debugger/graphics_framebuffer.h +++ b/src/citra_qt/debugger/graphics_framebuffer.h @@ -20,8 +20,9 @@ class GraphicsFramebufferWidget : public BreakPointObserverDock { using Event = Pica::DebugContext::Event; enum class Source { - PicaTarget = 0, - Custom = 1, + PicaTarget = 0, + DepthBuffer = 1, + Custom = 2, // TODO: Add GPU framebuffer sources! }; @@ -32,8 +33,13 @@ class GraphicsFramebufferWidget : public BreakPointObserverDock { RGB5A1 = 2, RGB565 = 3, RGBA4 = 4, + D16 = 5, + D24 = 6, + D24S8 = 7 }; + static u32 BytesPerPixel(Format format); + public: GraphicsFramebufferWidget(std::shared_ptr debug_context, QWidget* parent = nullptr); diff --git a/src/video_core/color.h b/src/video_core/color.h index 35da901f2..14ade74f2 100644 --- a/src/video_core/color.h +++ b/src/video_core/color.h @@ -100,6 +100,33 @@ inline const Math::Vec4 DecodeRGBA4(const u8* bytes) { Convert4To8((pixel >> 4) & 0xF), Convert4To8(pixel & 0xF) }; } +/** + * Decode a depth value stored in D16 format + * @param bytes Pointer to encoded source value + * @return Depth value as an u32 + */ +inline u32 DecodeD16(const u8* bytes) { + return *reinterpret_cast(bytes); +} + +/** + * Decode a depth value stored in D24 format + * @param bytes Pointer to encoded source value + * @return Depth value as an u32 + */ +inline u32 DecodeD24(const u8* bytes) { + return (bytes[2] << 16) | (bytes[1] << 8) | bytes[0]; +} + +/** + * Decode a depth value and a stencil value stored in D24S8 format + * @param bytes Pointer to encoded source values + * @return Resulting values stored as a Math::Vec2 + */ +inline const Math::Vec2 DecodeD24S8(const u8* bytes) { + return { (bytes[2] << 16) | (bytes[1] << 8) | bytes[0], bytes[3] }; +} + /** * Encode a color as RGBA8 format * @param color Source color to encode @@ -153,4 +180,34 @@ inline void EncodeRGBA4(const Math::Vec4& color, u8* bytes) { (Convert8To4(color.g()) << 8) | (Convert8To4(color.b()) << 4) | Convert8To4(color.a()); } +/** + * Encode a 16 bit depth value as D16 format + * @param value 16 bit source depth value to encode + * @param bytes Pointer where to store the encoded value + */ +inline void EncodeD16(u32 value, u8* bytes) { + *reinterpret_cast(bytes) = value & 0xFFFF; +} + +/** + * Encode a 24 bit depth value as D24 format + * @param value 24 bit source depth value to encode + * @param bytes Pointer where to store the encoded value + */ +inline void EncodeD24(u32 value, u8* bytes) { + bytes[0] = value & 0xFF; + bytes[1] = (value >> 8) & 0xFF; + bytes[2] = (value >> 16) & 0xFF; +} + +/** + * Encode a 24 bit depth and 8 bit stencil values as D24S8 format + * @param depth 24 bit source depth value to encode + * @param stencil 8 bit source stencil value to encode + * @param bytes Pointer where to store the encoded value + */ +inline void EncodeD24S8(u32 depth, u8 stencil, u8* bytes) { + *reinterpret_cast(bytes) = (stencil << 24) | depth; +} + } // namespace diff --git a/src/video_core/pica.h b/src/video_core/pica.h index b14de9278..fe20cd77d 100644 --- a/src/video_core/pica.h +++ b/src/video_core/pica.h @@ -393,7 +393,15 @@ struct Regs { BitField< 8, 8, u32> ref; } alpha_test; - INSERT_PADDING_WORDS(0x2); + union { + BitField< 0, 1, u32> stencil_test_enable; + BitField< 4, 3, CompareFunc> stencil_test_func; + BitField< 8, 8, u32> stencil_replacement_value; + BitField<16, 8, u32> stencil_reference_value; + BitField<24, 8, u32> stencil_mask; + } stencil_test; + + INSERT_PADDING_WORDS(0x1); union { BitField< 0, 1, u32> depth_test_enable; @@ -408,6 +416,30 @@ struct Regs { INSERT_PADDING_WORDS(0x8); } output_merger; + enum DepthFormat : u32 { + D16 = 0, + + D24 = 2, + D24S8 = 3 + }; + + /* + * Returns the number of bytes in the specified depth format + */ + static u32 BytesPerDepthPixel(DepthFormat format) { + switch (format) { + case DepthFormat::D16: + return 2; + case DepthFormat::D24: + return 3; + case DepthFormat::D24S8: + return 4; + default: + LOG_CRITICAL(HW_GPU, "Unknown depth format %u", format); + UNIMPLEMENTED(); + } + } + struct { // Components are laid out in reverse byte order, most significant bits first. enum ColorFormat : u32 { @@ -420,7 +452,7 @@ struct Regs { INSERT_PADDING_WORDS(0x6); - u32 depth_format; + DepthFormat depth_format; BitField<16, 3, u32> color_format; INSERT_PADDING_WORDS(0x4); diff --git a/src/video_core/rasterizer.cpp b/src/video_core/rasterizer.cpp index 5861c1926..dd46f0ec3 100644 --- a/src/video_core/rasterizer.cpp +++ b/src/video_core/rasterizer.cpp @@ -91,7 +91,7 @@ static const Math::Vec4 GetPixel(int x, int y) { } return {}; - } +} static u32 GetDepth(int x, int y) { const PAddr addr = registers.framebuffer.GetDepthBufferPhysicalAddress(); @@ -100,23 +100,55 @@ static u32 GetDepth(int x, int y) { y = (registers.framebuffer.height - y); const u32 coarse_y = y & ~7; - u32 stride = registers.framebuffer.width * 2; + u32 bytes_per_pixel = Pica::Regs::BytesPerDepthPixel(registers.framebuffer.depth_format); + u32 stride = registers.framebuffer.width * bytes_per_pixel; - // Assuming 16-bit depth buffer format until actual format handling is implemented - return *(u16*)(depth_buffer + VideoCore::GetMortonOffset(x, y, 2) + coarse_y * stride); + u32 src_offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + coarse_y * stride; + u8* src_pixel = depth_buffer + src_offset; + + switch (registers.framebuffer.depth_format) { + case Pica::Regs::DepthFormat::D16: + return Color::DecodeD16(src_pixel); + case Pica::Regs::DepthFormat::D24: + return Color::DecodeD24(src_pixel); + case Pica::Regs::DepthFormat::D24S8: + return Color::DecodeD24S8(src_pixel).x; + default: + LOG_CRITICAL(HW_GPU, "Unimplemented depth format %u", registers.framebuffer.depth_format); + UNIMPLEMENTED(); + return 0; + } } -static void SetDepth(int x, int y, u16 value) { +static void SetDepth(int x, int y, u32 value) { const PAddr addr = registers.framebuffer.GetDepthBufferPhysicalAddress(); u8* depth_buffer = Memory::GetPointer(PAddrToVAddr(addr)); y = (registers.framebuffer.height - y); const u32 coarse_y = y & ~7; - u32 stride = registers.framebuffer.width * 2; + u32 bytes_per_pixel = Pica::Regs::BytesPerDepthPixel(registers.framebuffer.depth_format); + u32 stride = registers.framebuffer.width * bytes_per_pixel; - // Assuming 16-bit depth buffer format until actual format handling is implemented - *(u16*)(depth_buffer + VideoCore::GetMortonOffset(x, y, 2) + coarse_y * stride) = value; + u32 dst_offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + coarse_y * stride; + u8* dst_pixel = depth_buffer + dst_offset; + + switch (registers.framebuffer.depth_format) { + case Pica::Regs::DepthFormat::D16: + Color::EncodeD16(value, dst_pixel); + break; + case Pica::Regs::DepthFormat::D24: + Color::EncodeD24(value, dst_pixel); + break; + case Pica::Regs::DepthFormat::D24S8: + // TODO(Subv): Implement the stencil buffer + Color::EncodeD24S8(value, 0, dst_pixel); + break; + default: + LOG_CRITICAL(HW_GPU, "Unimplemented depth format %u", registers.framebuffer.depth_format); + UNIMPLEMENTED(); + break; + } } // NOTE: Assuming that rasterizer coordinates are 12.4 fixed-point values @@ -595,7 +627,7 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0, u16 z = (u16)((v0.screenpos[2].ToFloat32() * w0 + v1.screenpos[2].ToFloat32() * w1 + v2.screenpos[2].ToFloat32() * w2) * 65535.f / wsum); - u16 ref_z = GetDepth(x >> 4, y >> 4); + u32 ref_z = GetDepth(x >> 4, y >> 4); bool pass = false;