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GPU: Ensure coordinates are masked/clamped

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Stenzek 2024-05-01 14:11:20 +10:00
parent 325cf577a2
commit fec210b1e1
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7 changed files with 81 additions and 36 deletions
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2
src/core/gpu.cpp
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@ -196,7 +196,7 @@ void GPU::SoftReset()
m_GPUSTAT.vertical_interlace = false;
m_GPUSTAT.display_disable = true;
m_GPUSTAT.dma_direction = DMADirection::Off;
m_drawing_area.Set(0, 0, 0, 0);
m_drawing_area = {};
m_drawing_area_changed = true;
m_drawing_offset = {};
std::memset(&m_crtc_state.regs, 0, sizeof(m_crtc_state.regs));

14
src/core/gpu.h
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@ -294,7 +294,10 @@ protected:
}
/// Returns true if the drawing area is valid (i.e. left <= right, top <= bottom).
ALWAYS_INLINE bool IsDrawingAreaIsValid() const { return m_drawing_area.Valid(); }
ALWAYS_INLINE bool IsDrawingAreaIsValid() const
{
return (m_drawing_area.left <= m_drawing_area.right && m_drawing_area.top <= m_drawing_area.bottom);
}
/// Clamps the specified coordinates to the drawing area.
ALWAYS_INLINE void ClampCoordinatesToDrawingArea(s32* x, s32* y)
@ -457,13 +460,8 @@ protected:
ALWAYS_INLINE void ClearTextureWindowChangedFlag() { texture_window_changed = false; }
} m_draw_mode = {};
Common::Rectangle<u32> m_drawing_area{0, 0, VRAM_WIDTH, VRAM_HEIGHT};
struct DrawingOffset
{
s32 x;
s32 y;
} m_drawing_offset = {};
GPUDrawingArea m_drawing_area = {};
GPUDrawingOffset m_drawing_offset = {};
bool m_console_is_pal = false;
bool m_set_texture_disable_mask = false;

2
src/core/gpu_backend.h
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@ -63,7 +63,7 @@ protected:
void HandleCommand(const GPUBackendCommand* cmd);
Common::Rectangle<u32> m_drawing_area{};
GPUDrawingArea m_drawing_area = {};
Threading::KernelSemaphore m_sync_semaphore;
std::atomic_bool m_gpu_thread_sleeping{false};

64
src/core/gpu_hw.cpp
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@ -77,7 +77,7 @@ ALWAYS_INLINE static bool IsBlendedTextureFiltering(GPUTextureFilter filter)
}
/// Computes the area affected by a VRAM transfer, including wrap-around of X.
static Common::Rectangle<u32> GetVRAMTransferBounds(u32 x, u32 y, u32 width, u32 height)
ALWAYS_INLINE_RELEASE static Common::Rectangle<u32> GetVRAMTransferBounds(u32 x, u32 y, u32 width, u32 height)
{
Common::Rectangle<u32> out_rc = Common::Rectangle<u32>::FromExtents(x % VRAM_WIDTH, y % VRAM_HEIGHT, width, height);
if (out_rc.right > VRAM_WIDTH)
@ -244,6 +244,7 @@ void GPU_HW::Reset(bool clear_vram)
m_batch_ubo_data = {};
m_batch_ubo_dirty = true;
m_current_depth = 1;
SetClampedDrawingArea();
if (clear_vram)
ClearFramebuffer();
@ -500,6 +501,20 @@ void GPU_HW::CheckSettings()
}
}
void GPU_HW::SetClampedDrawingArea()
{
if (!IsDrawingAreaIsValid()) [[unlikely]]
{
m_clamped_drawing_area = {};
return;
}
m_clamped_drawing_area.right = std::min(m_drawing_area.right + 1, static_cast<u32>(VRAM_WIDTH));
m_clamped_drawing_area.left = std::min(m_drawing_area.left, std::min(m_clamped_drawing_area.right, VRAM_WIDTH - 1));
m_clamped_drawing_area.bottom = std::min(m_drawing_area.bottom + 1, static_cast<u32>(VRAM_HEIGHT));
m_clamped_drawing_area.top = std::min(m_drawing_area.top, std::min(m_drawing_area.bottom, VRAM_HEIGHT - 1));
}
u32 GPU_HW::CalculateResolutionScale() const
{
const u32 max_resolution_scale = GetMaxResolutionScale();
@ -592,6 +607,26 @@ void GPU_HW::ClearVRAMDirtyRectangle()
m_vram_dirty_write_rect.SetInvalid();
}
void GPU_HW::IncludeDrawnDirtyRectangle(s32 min_x, s32 min_y, s32 max_x, s32 max_y)
{
const u32 clamped_min_x = std::clamp(min_x, static_cast<s32>(m_clamped_drawing_area.left),
static_cast<s32>(m_clamped_drawing_area.right - 1));
const u32 clamped_max_x =
std::clamp(max_x, static_cast<s32>(m_clamped_drawing_area.left), static_cast<s32>(m_clamped_drawing_area.right));
m_vram_dirty_draw_rect.left = std::min(m_vram_dirty_draw_rect.left, clamped_min_x);
m_vram_dirty_draw_rect.right = std::max(m_vram_dirty_draw_rect.right, clamped_max_x);
const u32 clamped_min_y = std::clamp(min_y, static_cast<s32>(m_clamped_drawing_area.top),
static_cast<s32>(m_clamped_drawing_area.bottom - 1));
const u32 clamped_max_y =
std::clamp(max_y, static_cast<s32>(m_clamped_drawing_area.top), static_cast<s32>(m_clamped_drawing_area.bottom));
m_vram_dirty_draw_rect.top = std::min(m_vram_dirty_draw_rect.top, clamped_min_y);
m_vram_dirty_draw_rect.bottom = std::max(m_vram_dirty_draw_rect.bottom, clamped_max_y);
DebugAssert(m_vram_dirty_draw_rect.left < VRAM_WIDTH && m_vram_dirty_draw_rect.right <= VRAM_WIDTH);
DebugAssert(m_vram_dirty_draw_rect.top < VRAM_HEIGHT && m_vram_dirty_draw_rect.bottom <= VRAM_HEIGHT);
}
std::tuple<u32, u32> GPU_HW::GetEffectiveDisplayResolution(bool scaled /* = true */)
{
const u32 scale = scaled ? m_resolution_scale : 1u;
@ -2004,13 +2039,9 @@ void GPU_HW::LoadVertices()
}
else
{
const u32 clip_left = static_cast<u32>(std::clamp<s32>(min_x, m_drawing_area.left, m_drawing_area.right));
const u32 clip_right = static_cast<u32>(std::clamp<s32>(max_x, m_drawing_area.left, m_drawing_area.right)) + 1u;
const u32 clip_top = static_cast<u32>(std::clamp<s32>(min_y, m_drawing_area.top, m_drawing_area.bottom));
const u32 clip_bottom =
static_cast<u32>(std::clamp<s32>(max_y, m_drawing_area.top, m_drawing_area.bottom)) + 1u;
// TODO: Cull triangles that fall entirely off-screen.
IncludeDrawnDirtyRectangle(min_x, min_y, max_x, max_y);
m_vram_dirty_draw_rect.Include(clip_left, clip_right, clip_top, clip_bottom);
AddDrawTriangleTicks(native_vertex_positions[0][0], native_vertex_positions[0][1],
native_vertex_positions[1][0], native_vertex_positions[1][1],
native_vertex_positions[2][0], native_vertex_positions[2][1], rc.shading_enable,
@ -2041,14 +2072,8 @@ void GPU_HW::LoadVertices()
}
else
{
const u32 clip_left = static_cast<u32>(std::clamp<s32>(min_x_123, m_drawing_area.left, m_drawing_area.right));
const u32 clip_right =
static_cast<u32>(std::clamp<s32>(max_x_123, m_drawing_area.left, m_drawing_area.right)) + 1u;
const u32 clip_top = static_cast<u32>(std::clamp<s32>(min_y_123, m_drawing_area.top, m_drawing_area.bottom));
const u32 clip_bottom =
static_cast<u32>(std::clamp<s32>(max_y_123, m_drawing_area.top, m_drawing_area.bottom)) + 1u;
IncludeDrawnDirtyRectangle(min_x_123, min_y_123, max_x_123, max_y_123);
m_vram_dirty_draw_rect.Include(clip_left, clip_right, clip_top, clip_bottom);
AddDrawTriangleTicks(native_vertex_positions[2][0], native_vertex_positions[2][1],
native_vertex_positions[1][0], native_vertex_positions[1][1],
native_vertex_positions[3][0], native_vertex_positions[3][1], rc.shading_enable,
@ -2187,14 +2212,14 @@ void GPU_HW::LoadVertices()
tex_top = 0;
}
IncludeDrawnDirtyRectangle(pos_x, pos_y, pos_x + rectangle_width, pos_y + rectangle_height);
const u32 clip_left = static_cast<u32>(std::clamp<s32>(pos_x, m_drawing_area.left, m_drawing_area.right));
const u32 clip_right =
static_cast<u32>(std::clamp<s32>(pos_x + rectangle_width, m_drawing_area.left, m_drawing_area.right)) + 1u;
const u32 clip_top = static_cast<u32>(std::clamp<s32>(pos_y, m_drawing_area.top, m_drawing_area.bottom));
const u32 clip_bottom =
static_cast<u32>(std::clamp<s32>(pos_y + rectangle_height, m_drawing_area.top, m_drawing_area.bottom)) + 1u;
m_vram_dirty_draw_rect.Include(clip_left, clip_right, clip_top, clip_bottom);
AddDrawRectangleTicks(clip_right - clip_left, clip_bottom - clip_top, rc.texture_enable, rc.transparency_enable);
if (m_sw_renderer)
@ -2251,13 +2276,14 @@ void GPU_HW::LoadVertices()
return;
}
IncludeDrawnDirtyRectangle(min_x, min_y, max_x, max_y);
const u32 clip_left = static_cast<u32>(std::clamp<s32>(min_x, m_drawing_area.left, m_drawing_area.right));
const u32 clip_right = static_cast<u32>(std::clamp<s32>(max_x, m_drawing_area.left, m_drawing_area.right)) + 1u;
const u32 clip_top = static_cast<u32>(std::clamp<s32>(min_y, m_drawing_area.top, m_drawing_area.bottom));
const u32 clip_bottom =
static_cast<u32>(std::clamp<s32>(max_y, m_drawing_area.top, m_drawing_area.bottom)) + 1u;
m_vram_dirty_draw_rect.Include(clip_left, clip_right, clip_top, clip_bottom);
AddDrawLineTicks(clip_right - clip_left, clip_bottom - clip_top, rc.shading_enable);
// TODO: Should we do a PGXP lookup here? Most lines are 2D.
@ -2317,6 +2343,8 @@ void GPU_HW::LoadVertices()
}
else
{
IncludeDrawnDirtyRectangle(min_x, min_y, max_x, max_y);
const u32 clip_left = static_cast<u32>(std::clamp<s32>(min_x, m_drawing_area.left, m_drawing_area.right));
const u32 clip_right =
static_cast<u32>(std::clamp<s32>(max_x, m_drawing_area.left, m_drawing_area.right)) + 1u;
@ -2324,7 +2352,6 @@ void GPU_HW::LoadVertices()
const u32 clip_bottom =
static_cast<u32>(std::clamp<s32>(max_y, m_drawing_area.top, m_drawing_area.bottom)) + 1u;
m_vram_dirty_draw_rect.Include(clip_left, clip_right, clip_top, clip_bottom);
AddDrawLineTicks(clip_right - clip_left, clip_bottom - clip_top, rc.shading_enable);
// TODO: Should we do a PGXP lookup here? Most lines are 2D.
@ -3087,6 +3114,7 @@ void GPU_HW::DispatchRenderCommand()
if (m_drawing_area_changed)
{
m_drawing_area_changed = false;
SetClampedDrawingArea();
SetScissor();
if (m_pgxp_depth_buffer && m_last_depth_z < 1.0f)

3
src/core/gpu_hw.h
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@ -131,6 +131,7 @@ private:
void PrintSettingsToLog();
void CheckSettings();
void SetClampedDrawingArea();
void UpdateVRAMReadTexture(bool drawn, bool written);
void UpdateDepthBufferFromMaskBit();
void ClearDepthBuffer();
@ -149,6 +150,7 @@ private:
void SetFullVRAMDirtyRectangle();
void ClearVRAMDirtyRectangle();
void IncludeVRAMDirtyRectangle(Common::Rectangle<u32>& rect, const Common::Rectangle<u32>& new_rect);
void IncludeDrawnDirtyRectangle(s32 min_x, s32 min_y, s32 max_x, s32 max_y);
void CheckForTexPageOverlap(u32 texpage, u32 min_u, u32 min_v, u32 max_u, u32 max_v);
bool IsFlushed() const;
@ -252,6 +254,7 @@ private:
BatchUBOData m_batch_ubo_data = {};
// Bounding box of VRAM area that the GPU has drawn into.
GPUDrawingArea m_clamped_drawing_area = {};
Common::Rectangle<u32> m_vram_dirty_draw_rect;
Common::Rectangle<u32> m_vram_dirty_write_rect;
Common::Rectangle<u32> m_current_uv_range;

15
src/core/gpu_sw_backend.cpp
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@ -214,6 +214,7 @@ void ALWAYS_INLINE_RELEASE GPU_SW_Backend::ShadePixel(const GPUBackendDrawComman
if ((bg_color.bits & mask_and) != 0)
return;
DebugAssert(static_cast<u32>(x) < VRAM_WIDTH && static_cast<u32>(y) < VRAM_HEIGHT);
SetPixel(static_cast<u32>(x), static_cast<u32>(y), color.bits | cmd->params.GetMaskOR());
}
@ -234,6 +235,7 @@ void GPU_SW_Backend::DrawRectangle(const GPUBackendDrawRectangleCommand* cmd)
continue;
}
const u32 draw_y = static_cast<u32>(y) & VRAM_HEIGHT_MASK;
const u8 texcoord_y = Truncate8(ZeroExtend32(origin_texcoord_y) + offset_y);
for (u32 offset_x = 0; offset_x < cmd->width; offset_x++)
@ -244,8 +246,8 @@ void GPU_SW_Backend::DrawRectangle(const GPUBackendDrawRectangleCommand* cmd)
const u8 texcoord_x = Truncate8(ZeroExtend32(origin_texcoord_x) + offset_x);
ShadePixel<texture_enable, raw_texture_enable, transparency_enable, false>(
cmd, static_cast<u32>(x), static_cast<u32>(y), r, g, b, texcoord_x, texcoord_y);
ShadePixel<texture_enable, raw_texture_enable, transparency_enable, false>(cmd, static_cast<u32>(x), draw_y, r, g,
b, texcoord_x, texcoord_y);
}
}
}
@ -569,7 +571,7 @@ void GPU_SW_Backend::DrawTriangle(const GPUBackendDrawPolygonCommand* cmd,
continue;
DrawSpan<shading_enable, texture_enable, raw_texture_enable, transparency_enable, dithering_enable>(
cmd, yi, GetPolyXFP_Int(lc), GetPolyXFP_Int(rc), ig, idl);
cmd, y & VRAM_HEIGHT_MASK, GetPolyXFP_Int(lc), GetPolyXFP_Int(rc), ig, idl);
}
}
else
@ -583,9 +585,8 @@ void GPU_SW_Backend::DrawTriangle(const GPUBackendDrawPolygonCommand* cmd,
if (y >= static_cast<s32>(m_drawing_area.top))
{
DrawSpan<shading_enable, texture_enable, raw_texture_enable, transparency_enable, dithering_enable>(
cmd, yi, GetPolyXFP_Int(lc), GetPolyXFP_Int(rc), ig, idl);
cmd, y & VRAM_HEIGHT_MASK, GetPolyXFP_Int(lc), GetPolyXFP_Int(rc), ig, idl);
}
yi++;
@ -698,8 +699,8 @@ void GPU_SW_Backend::DrawLine(const GPUBackendDrawLineCommand* cmd, const GPUBac
const u8 g = shading_enable ? static_cast<u8>(cur_point.g >> Line_RGB_FractBits) : p0->g;
const u8 b = shading_enable ? static_cast<u8>(cur_point.b >> Line_RGB_FractBits) : p0->b;
ShadePixel<false, false, transparency_enable, dithering_enable>(cmd, static_cast<u32>(x), static_cast<u32>(y), r,
g, b, 0, 0);
ShadePixel<false, false, transparency_enable, dithering_enable>(
cmd, static_cast<u32>(x), static_cast<u32>(y) & VRAM_HEIGHT_MASK, r, g, b, 0, 0);
}
cur_point.x += step.dx_dk;

17
src/core/gpu_types.h
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@ -83,6 +83,21 @@ enum class GPUInterlacedDisplayMode : u8
SeparateFields
};
// NOTE: Inclusive, not exclusive on the upper bounds.
struct GPUDrawingArea
{
u32 left;
u32 top;
u32 right;
u32 bottom;
};
struct GPUDrawingOffset
{
s32 x;
s32 y;
};
union GPURenderCommand
{
u32 bits;
@ -318,7 +333,7 @@ struct GPUBackendCopyVRAMCommand : public GPUBackendCommand
struct GPUBackendSetDrawingAreaCommand : public GPUBackendCommand
{
Common::Rectangle<u32> new_area;
GPUDrawingArea new_area;
};
struct GPUBackendDrawCommand : public GPUBackendCommand