diff --git a/src/citra_qt/debugger/graphics_framebuffer.cpp b/src/citra_qt/debugger/graphics_framebuffer.cpp
index 5bd6c0235167a7e0ddc5d3239ae5c770a0803c97..d621d7204137275ec759bcdf67e382b7cb8a8abc 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_ptr<Pica::Debug
framebuffer_source_list = new QComboBox;
framebuffer_source_list->addItem(tr("Active Render Target"));
+ framebuffer_source_list->addItem(tr("Active Depth Buffer"));
framebuffer_source_list->addItem(tr("Custom"));
framebuffer_source_list->setCurrentIndex(static_cast<int>(framebuffer_source));
@@ -49,6 +50,9 @@ GraphicsFramebufferWidget::GraphicsFramebufferWidget(std::shared_ptr<Pica::Debug
framebuffer_format_control->addItem(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<u8> 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<u32> 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<int>(framebuffer_format);
break;
@@ -240,3 +279,19 @@ void GraphicsFramebufferWidget::OnUpdate()
framebuffer_format_control->setCurrentIndex(static_cast<int>(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 15ebd1f7d2387235857e290ad79dec228c9483a5..4cb396ffe322cad783b53a0c634a8ee3022b4730 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<Pica::DebugContext> debug_context, QWidget* parent = nullptr);
diff --git a/src/video_core/color.h b/src/video_core/color.h
index 35da901f24beb3e832802befd2836153f0856946..14ade74f2bd6945adc9d7afd7434ff2029a2073f 100644
--- a/src/video_core/color.h
+++ b/src/video_core/color.h
@@ -100,6 +100,33 @@ inline const Math::Vec4<u8> 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<const u16_le*>(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<u32> 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<u8>& 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<u16_le*>(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<u32_le*>(bytes) = (stencil << 24) | depth;
+}
+
} // namespace
diff --git a/src/video_core/pica.h b/src/video_core/pica.h
index b14de927847f009ef75b1c1c3dee3d112210f29f..fe20cd77d95a005bdf28892fb6294904d2048980 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 5861c19261966236350da26f09643e4e722e9ddc..dd46f0ec3bc62ba888730dba33c102eb2bf51972 100644
--- a/src/video_core/rasterizer.cpp
+++ b/src/video_core/rasterizer.cpp
@@ -91,7 +91,7 @@ static const Math::Vec4<u8> 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;
-
- // 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 bytes_per_pixel = Pica::Regs::BytesPerDepthPixel(registers.framebuffer.depth_format);
+ u32 stride = registers.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 (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;
-
- // 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 bytes_per_pixel = Pica::Regs::BytesPerDepthPixel(registers.framebuffer.depth_format);
+ u32 stride = registers.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 (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;