mirror of
https://github.com/RetroDECK/Duckstation.git
synced 2024-11-28 00:25:41 +00:00
535 lines
19 KiB
C++
535 lines
19 KiB
C++
#include "gpu_hw.h"
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#include "common/assert.h"
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#include "common/log.h"
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#include "common/state_wrapper.h"
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#include "settings.h"
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#include "system.h"
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#include <imgui.h>
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#include <sstream>
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Log_SetChannel(GPU_HW);
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GPU_HW::GPU_HW() : GPU()
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{
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m_vram_ptr = m_vram_shadow.data();
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}
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GPU_HW::~GPU_HW() = default;
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bool GPU_HW::IsHardwareRenderer() const
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{
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return true;
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}
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bool GPU_HW::Initialize(HostDisplay* host_display, System* system, DMA* dma, InterruptController* interrupt_controller,
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Timers* timers)
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{
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if (!GPU::Initialize(host_display, system, dma, interrupt_controller, timers))
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return false;
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const Settings& settings = m_system->GetSettings();
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m_resolution_scale = settings.gpu_resolution_scale;
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m_true_color = settings.gpu_true_color;
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m_scaled_dithering = settings.gpu_scaled_dithering;
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m_texture_filtering = settings.gpu_texture_filtering;
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if (m_resolution_scale < 1 || m_resolution_scale > m_max_resolution_scale)
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{
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m_system->GetHostInterface()->AddFormattedOSDMessage(5.0f, "Invalid resolution scale %ux specified. Maximum is %u.",
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m_resolution_scale, m_max_resolution_scale);
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m_resolution_scale = std::clamp<u32>(m_resolution_scale, 1u, m_max_resolution_scale);
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}
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PrintSettingsToLog();
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return true;
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}
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void GPU_HW::Reset()
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{
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GPU::Reset();
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m_vram_shadow.fill(0);
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m_batch = {};
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m_batch_ubo_data = {};
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m_batch_ubo_dirty = true;
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SetFullVRAMDirtyRectangle();
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}
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bool GPU_HW::DoState(StateWrapper& sw)
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{
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if (!GPU::DoState(sw))
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return false;
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// invalidate the whole VRAM read texture when loading state
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if (sw.IsReading())
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SetFullVRAMDirtyRectangle();
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return true;
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}
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void GPU_HW::UpdateSettings()
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{
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GPU::UpdateSettings();
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const Settings& settings = m_system->GetSettings();
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m_resolution_scale = std::clamp<u32>(settings.gpu_resolution_scale, 1, m_max_resolution_scale);
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m_true_color = settings.gpu_true_color;
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m_scaled_dithering = settings.gpu_scaled_dithering;
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m_texture_filtering = settings.gpu_texture_filtering;
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PrintSettingsToLog();
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}
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void GPU_HW::PrintSettingsToLog()
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{
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Log_InfoPrintf("Resolution Scale: %u (%ux%u), maximum %u", m_resolution_scale, VRAM_WIDTH * m_resolution_scale,
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VRAM_HEIGHT * m_resolution_scale, m_max_resolution_scale);
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Log_InfoPrintf("Dithering: %s%s", m_true_color ? "Disabled" : "Enabled",
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(!m_true_color && m_scaled_dithering) ? " (Scaled)" : "");
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Log_InfoPrintf("Texture Filtering: %s", m_texture_filtering ? "Enabled" : "Disabled");
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Log_InfoPrintf("Dual-source blending: %s", m_supports_dual_source_blend ? "Supported" : "Not supported");
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}
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void GPU_HW::LoadVertices(RenderCommand rc, u32 num_vertices, const u32* command_ptr)
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{
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const u32 texpage = ZeroExtend32(m_draw_mode.mode_reg.bits) | (ZeroExtend32(m_draw_mode.palette_reg) << 16);
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s32 min_x = std::numeric_limits<s32>::max();
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s32 max_x = std::numeric_limits<s32>::min();
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s32 min_y = std::numeric_limits<s32>::max();
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s32 max_y = std::numeric_limits<s32>::min();
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// TODO: Move this to the GPU..
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switch (rc.primitive)
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{
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case Primitive::Polygon:
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{
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DebugAssert(num_vertices == 3 || num_vertices == 4);
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EnsureVertexBufferSpace(rc.quad_polygon ? 6 : 3);
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const u32 first_color = rc.color_for_first_vertex;
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const bool shaded = rc.shading_enable;
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const bool textured = rc.texture_enable;
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u32 buffer_pos = 1;
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std::array<BatchVertex, 4> vertices;
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for (u32 i = 0; i < 3; i++)
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{
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const u32 color = (shaded && i > 0) ? (command_ptr[buffer_pos++] & UINT32_C(0x00FFFFFF)) : first_color;
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const VertexPosition vp{command_ptr[buffer_pos++]};
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const u16 packed_texcoord = textured ? Truncate16(command_ptr[buffer_pos++]) : 0;
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vertices[i].Set(vp.x, vp.y, color, texpage, packed_texcoord);
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}
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// Cull polygons which are too large.
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if (std::abs(vertices[2].x - vertices[0].x) >= MAX_PRIMITIVE_WIDTH ||
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std::abs(vertices[2].x - vertices[1].x) >= MAX_PRIMITIVE_WIDTH ||
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std::abs(vertices[1].x - vertices[0].x) >= MAX_PRIMITIVE_WIDTH ||
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std::abs(vertices[2].y - vertices[0].y) >= MAX_PRIMITIVE_HEIGHT ||
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std::abs(vertices[2].y - vertices[1].y) >= MAX_PRIMITIVE_HEIGHT ||
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std::abs(vertices[1].y - vertices[0].y) >= MAX_PRIMITIVE_HEIGHT)
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{
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Log_DebugPrintf("Culling too-large polygon: %d,%d %d,%d %d,%d", vertices[0].x, vertices[0].y, vertices[1].x,
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vertices[1].y, vertices[2].x, vertices[2].y);
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}
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else
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{
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min_x = std::min(std::min(vertices[0].x, vertices[1].x), vertices[2].x);
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max_x = std::max(std::max(vertices[0].x, vertices[1].x), vertices[2].x);
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min_y = std::min(std::min(vertices[0].y, vertices[1].y), vertices[2].y);
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max_y = std::max(std::max(vertices[0].y, vertices[1].y), vertices[2].y);
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std::memcpy(m_batch_current_vertex_ptr, vertices.data(), sizeof(BatchVertex) * 3);
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m_batch_current_vertex_ptr += 3;
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}
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// quads
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for (u32 i = 3; i < num_vertices; i++)
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{
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const u32 color = (shaded && i > 0) ? (command_ptr[buffer_pos++] & UINT32_C(0x00FFFFFF)) : first_color;
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const VertexPosition vp{command_ptr[buffer_pos++]};
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const u16 packed_texcoord = textured ? Truncate16(command_ptr[buffer_pos++]) : 0;
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vertices[3].Set(vp.x, vp.y, color, texpage, packed_texcoord);
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// Cull polygons which are too large.
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if (std::abs(vertices[3].x - vertices[2].x) >= MAX_PRIMITIVE_WIDTH ||
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std::abs(vertices[3].x - vertices[1].x) >= MAX_PRIMITIVE_WIDTH ||
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std::abs(vertices[1].x - vertices[2].x) >= MAX_PRIMITIVE_WIDTH ||
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std::abs(vertices[3].y - vertices[2].y) >= MAX_PRIMITIVE_HEIGHT ||
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std::abs(vertices[3].y - vertices[1].y) >= MAX_PRIMITIVE_HEIGHT ||
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std::abs(vertices[1].y - vertices[2].y) >= MAX_PRIMITIVE_HEIGHT)
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{
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Log_DebugPrintf("Culling too-large polygon (quad second half): %d,%d %d,%d %d,%d", vertices[2].x,
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vertices[2].y, vertices[1].x, vertices[1].y, vertices[0].x, vertices[0].y);
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}
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else
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{
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min_x = std::min(min_x, vertices[3].x);
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max_x = std::max(max_x, vertices[3].x);
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min_y = std::min(min_y, vertices[3].y);
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max_y = std::max(max_y, vertices[3].y);
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AddVertex(vertices[2]);
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AddVertex(vertices[1]);
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AddVertex(vertices[3]);
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}
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}
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}
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break;
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case Primitive::Rectangle:
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{
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u32 buffer_pos = 1;
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const u32 color = rc.color_for_first_vertex;
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const VertexPosition vp{command_ptr[buffer_pos++]};
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const s32 pos_x = vp.x;
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const s32 pos_y = vp.y;
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const auto [texcoord_x, texcoord_y] =
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UnpackTexcoord(rc.texture_enable ? Truncate16(command_ptr[buffer_pos++]) : 0);
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u16 orig_tex_left = ZeroExtend16(texcoord_x);
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u16 orig_tex_top = ZeroExtend16(texcoord_y);
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s32 rectangle_width;
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s32 rectangle_height;
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switch (rc.rectangle_size)
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{
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case DrawRectangleSize::R1x1:
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rectangle_width = 1;
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rectangle_height = 1;
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break;
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case DrawRectangleSize::R8x8:
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rectangle_width = 8;
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rectangle_height = 8;
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break;
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case DrawRectangleSize::R16x16:
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rectangle_width = 16;
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rectangle_height = 16;
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break;
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default:
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rectangle_width = static_cast<s32>(command_ptr[buffer_pos] & 0xFFFF);
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rectangle_height = static_cast<s32>(command_ptr[buffer_pos] >> 16);
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break;
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}
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if (rectangle_width >= MAX_PRIMITIVE_WIDTH || rectangle_height >= MAX_PRIMITIVE_HEIGHT)
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{
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Log_DebugPrintf("Culling too-large rectangle: %d,%d %dx%d", pos_x, pos_y, rectangle_width, rectangle_height);
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return;
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}
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// we can split the rectangle up into potentially 8 quads
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const u32 required_vertices = 6 * ((rectangle_width + (TEXTURE_PAGE_WIDTH - 1)) / TEXTURE_PAGE_WIDTH) *
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((rectangle_height + (TEXTURE_PAGE_HEIGHT - 1)) / TEXTURE_PAGE_HEIGHT);
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EnsureVertexBufferSpace(required_vertices);
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min_x = pos_x;
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min_y = pos_y;
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max_x = pos_x + rectangle_width;
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max_y = pos_y + rectangle_height;
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// Split the rectangle into multiple quads if it's greater than 256x256, as the texture page should repeat.
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u16 tex_top = orig_tex_top;
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for (s32 y_offset = 0; y_offset < rectangle_height;)
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{
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const s32 quad_height = std::min<s32>(rectangle_height - y_offset, TEXTURE_PAGE_WIDTH - tex_top);
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const s32 quad_start_y = pos_y + y_offset;
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const s32 quad_end_y = quad_start_y + quad_height;
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const u16 tex_bottom = tex_top + static_cast<u16>(quad_height);
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u16 tex_left = orig_tex_left;
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for (s32 x_offset = 0; x_offset < rectangle_width;)
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{
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const s32 quad_width = std::min<s32>(rectangle_width - x_offset, TEXTURE_PAGE_HEIGHT - tex_left);
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const s32 quad_start_x = pos_x + x_offset;
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const s32 quad_end_x = quad_start_x + quad_width;
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const u16 tex_right = tex_left + static_cast<u16>(quad_width);
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AddNewVertex(quad_start_x, quad_start_y, color, texpage, tex_left, tex_top);
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AddNewVertex(quad_end_x, quad_start_y, color, texpage, tex_right, tex_top);
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AddNewVertex(quad_start_x, quad_end_y, color, texpage, tex_left, tex_bottom);
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AddNewVertex(quad_start_x, quad_end_y, color, texpage, tex_left, tex_bottom);
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AddNewVertex(quad_end_x, quad_start_y, color, texpage, tex_right, tex_top);
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AddNewVertex(quad_end_x, quad_end_y, color, texpage, tex_right, tex_bottom);
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x_offset += quad_width;
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tex_left = 0;
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}
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y_offset += quad_height;
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tex_top = 0;
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}
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}
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break;
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case Primitive::Line:
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{
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EnsureVertexBufferSpace(num_vertices * 2);
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const u32 first_color = rc.color_for_first_vertex;
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const bool shaded = rc.shading_enable;
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u32 buffer_pos = 1;
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BatchVertex last_vertex;
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for (u32 i = 0; i < num_vertices; i++)
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{
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const u32 color = (shaded && i > 0) ? (command_ptr[buffer_pos++] & UINT32_C(0x00FFFFFF)) : first_color;
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const VertexPosition vp{command_ptr[buffer_pos++]};
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BatchVertex vertex;
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vertex.Set(vp.x, vp.y, color, 0, 0);
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if (i > 0)
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{
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if (std::abs(last_vertex.x - vertex.x) >= MAX_PRIMITIVE_WIDTH ||
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std::abs(last_vertex.y - vertex.y) >= MAX_PRIMITIVE_HEIGHT)
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{
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Log_DebugPrintf("Culling too-large line: %d,%d - %d,%d", last_vertex.x, last_vertex.y, vertex.x, vertex.y);
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}
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else
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{
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AddVertex(last_vertex);
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AddVertex(vertex);
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min_x = std::min(min_x, std::min(last_vertex.x, vertex.x));
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max_x = std::max(max_x, std::max(last_vertex.x, vertex.x));
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min_y = std::min(min_y, std::min(last_vertex.y, vertex.y));
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max_y = std::max(max_y, std::max(last_vertex.y, vertex.y));
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}
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}
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std::memcpy(&last_vertex, &vertex, sizeof(BatchVertex));
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}
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}
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break;
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default:
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UnreachableCode();
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break;
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}
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if (min_x <= max_x)
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{
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const Common::Rectangle<u32> area_covered(
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std::clamp(m_drawing_offset.x + min_x, static_cast<s32>(m_drawing_area.left),
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static_cast<s32>(m_drawing_area.right)),
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std::clamp(m_drawing_offset.y + min_y, static_cast<s32>(m_drawing_area.top),
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static_cast<s32>(m_drawing_area.bottom)),
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std::clamp(m_drawing_offset.x + max_x, static_cast<s32>(m_drawing_area.left),
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static_cast<s32>(m_drawing_area.right)) +
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1,
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std::clamp(m_drawing_offset.y + max_y, static_cast<s32>(m_drawing_area.top),
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static_cast<s32>(m_drawing_area.bottom)) +
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1);
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m_vram_dirty_rect.Include(area_covered);
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}
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}
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void GPU_HW::CalcScissorRect(int* left, int* top, int* right, int* bottom)
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{
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*left = m_drawing_area.left * m_resolution_scale;
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*right = std::max<u32>((m_drawing_area.right + 1) * m_resolution_scale, *left + 1);
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*top = m_drawing_area.top * m_resolution_scale;
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*bottom = std::max<u32>((m_drawing_area.bottom + 1) * m_resolution_scale, *top + 1);
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}
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Common::Rectangle<u32> GPU_HW::GetVRAMTransferBounds(u32 x, u32 y, u32 width, u32 height)
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{
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Common::Rectangle<u32> out_rc = Common::Rectangle<u32>::FromExtents(x, y, width, height);
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if (out_rc.right > VRAM_WIDTH)
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{
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out_rc.left = 0;
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out_rc.right = VRAM_WIDTH;
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}
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if (out_rc.bottom > VRAM_HEIGHT)
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{
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out_rc.top = 0;
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out_rc.bottom = VRAM_HEIGHT;
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}
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return out_rc;
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}
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GPU_HW::BatchPrimitive GPU_HW::GetPrimitiveForCommand(RenderCommand rc)
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{
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if (rc.primitive == Primitive::Line)
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return BatchPrimitive::Lines;
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else
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return BatchPrimitive::Triangles;
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}
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void GPU_HW::IncludeVRAMDityRectangle(const Common::Rectangle<u32>& rect)
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{
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m_vram_dirty_rect.Include(rect);
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// the vram area can include the texture page, but the game can leave it as-is. in this case, set it as dirty so the
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// shadow texture is updated
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if (!m_draw_mode.IsTexturePageChanged() &&
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(m_draw_mode.GetTexturePageRectangle().Intersects(rect) ||
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(m_draw_mode.IsUsingPalette() && m_draw_mode.GetTexturePaletteRectangle().Intersects(rect))))
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{
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m_draw_mode.SetTexturePageChanged();
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}
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}
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void GPU_HW::EnsureVertexBufferSpace(u32 required_vertices)
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{
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if (m_batch_current_vertex_ptr)
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{
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if (GetBatchVertexSpace() >= required_vertices)
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return;
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FlushRender();
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}
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MapBatchVertexPointer(required_vertices);
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}
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void GPU_HW::FillVRAM(u32 x, u32 y, u32 width, u32 height, u32 color)
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{
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IncludeVRAMDityRectangle(
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Common::Rectangle<u32>::FromExtents(x, y, width, height).Clamped(0, 0, VRAM_WIDTH, VRAM_HEIGHT));
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}
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void GPU_HW::UpdateVRAM(u32 x, u32 y, u32 width, u32 height, const void* data)
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{
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DebugAssert((x + width) <= VRAM_WIDTH && (y + height) <= VRAM_HEIGHT);
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IncludeVRAMDityRectangle(Common::Rectangle<u32>::FromExtents(x, y, width, height));
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}
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void GPU_HW::CopyVRAM(u32 src_x, u32 src_y, u32 dst_x, u32 dst_y, u32 width, u32 height)
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{
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IncludeVRAMDityRectangle(
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Common::Rectangle<u32>::FromExtents(dst_x, dst_y, width, height).Clamped(0, 0, VRAM_WIDTH, VRAM_HEIGHT));
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}
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void GPU_HW::DispatchRenderCommand(RenderCommand rc, u32 num_vertices, const u32* command_ptr)
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{
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TextureMode texture_mode;
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if (rc.IsTexturingEnabled())
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{
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// texture page changed - check that the new page doesn't intersect the drawing area
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if (m_draw_mode.IsTexturePageChanged())
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{
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m_draw_mode.ClearTexturePageChangedFlag();
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if (m_vram_dirty_rect.Valid() &&
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(m_draw_mode.GetTexturePageRectangle().Intersects(m_vram_dirty_rect) ||
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(m_draw_mode.IsUsingPalette() && m_draw_mode.GetTexturePaletteRectangle().Intersects(m_vram_dirty_rect))))
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{
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Log_DevPrintf("Invalidating VRAM read cache due to drawing area overlap");
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if (!IsFlushed())
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FlushRender();
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UpdateVRAMReadTexture();
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m_renderer_stats.num_vram_read_texture_updates++;
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ClearVRAMDirtyRectangle();
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}
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}
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texture_mode = m_draw_mode.GetTextureMode();
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if (rc.raw_texture_enable)
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{
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texture_mode =
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static_cast<TextureMode>(static_cast<u8>(texture_mode) | static_cast<u8>(TextureMode::RawTextureBit));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
texture_mode = TextureMode::Disabled;
|
|
}
|
|
|
|
// has any state changed which requires a new batch?
|
|
const TransparencyMode transparency_mode =
|
|
rc.transparency_enable ? m_draw_mode.GetTransparencyMode() : TransparencyMode::Disabled;
|
|
const BatchPrimitive rc_primitive = GetPrimitiveForCommand(rc);
|
|
const bool dithering_enable = (!m_true_color && rc.IsDitheringEnabled()) ? m_GPUSTAT.dither_enable : false;
|
|
if (!IsFlushed())
|
|
{
|
|
if (m_batch.texture_mode != texture_mode || m_batch.transparency_mode != transparency_mode ||
|
|
m_batch.primitive != rc_primitive || dithering_enable != m_batch.dithering || m_drawing_area_changed ||
|
|
m_drawing_offset_changed || m_draw_mode.IsTextureWindowChanged())
|
|
{
|
|
FlushRender();
|
|
}
|
|
}
|
|
|
|
// transparency mode change
|
|
if (m_batch.transparency_mode != transparency_mode && transparency_mode != TransparencyMode::Disabled)
|
|
{
|
|
static constexpr float transparent_alpha[4][2] = {{0.5f, 0.5f}, {1.0f, 1.0f}, {1.0f, 1.0f}, {0.25f, 1.0f}};
|
|
m_batch_ubo_data.u_src_alpha_factor = transparent_alpha[static_cast<u32>(transparency_mode)][0];
|
|
m_batch_ubo_data.u_dst_alpha_factor = transparent_alpha[static_cast<u32>(transparency_mode)][1];
|
|
m_batch_ubo_dirty = true;
|
|
}
|
|
|
|
if (m_batch.check_mask_before_draw != m_GPUSTAT.check_mask_before_draw ||
|
|
m_batch.set_mask_while_drawing != m_GPUSTAT.set_mask_while_drawing)
|
|
{
|
|
m_batch.check_mask_before_draw = m_GPUSTAT.check_mask_before_draw;
|
|
m_batch.set_mask_while_drawing = m_GPUSTAT.set_mask_while_drawing;
|
|
m_batch_ubo_data.u_set_mask_while_drawing = BoolToUInt32(m_GPUSTAT.set_mask_while_drawing);
|
|
m_batch_ubo_dirty = true;
|
|
}
|
|
|
|
if (m_drawing_offset_changed)
|
|
{
|
|
m_drawing_offset_changed = false;
|
|
m_batch_ubo_data.u_pos_offset[0] = m_drawing_offset.x;
|
|
m_batch_ubo_data.u_pos_offset[1] = m_drawing_offset.y;
|
|
m_batch_ubo_dirty = true;
|
|
}
|
|
|
|
// update state
|
|
m_batch.primitive = rc_primitive;
|
|
m_batch.texture_mode = texture_mode;
|
|
m_batch.transparency_mode = transparency_mode;
|
|
m_batch.dithering = dithering_enable;
|
|
|
|
if (m_draw_mode.IsTextureWindowChanged())
|
|
{
|
|
m_draw_mode.ClearTextureWindowChangedFlag();
|
|
|
|
m_batch_ubo_data.u_texture_window_mask[0] = ZeroExtend32(m_draw_mode.texture_window_mask_x);
|
|
m_batch_ubo_data.u_texture_window_mask[1] = ZeroExtend32(m_draw_mode.texture_window_mask_y);
|
|
m_batch_ubo_data.u_texture_window_offset[0] = ZeroExtend32(m_draw_mode.texture_window_offset_x);
|
|
m_batch_ubo_data.u_texture_window_offset[1] = ZeroExtend32(m_draw_mode.texture_window_offset_y);
|
|
m_batch_ubo_dirty = true;
|
|
}
|
|
|
|
LoadVertices(rc, num_vertices, command_ptr);
|
|
}
|
|
|
|
void GPU_HW::DrawRendererStats(bool is_idle_frame)
|
|
{
|
|
if (!is_idle_frame)
|
|
{
|
|
m_last_renderer_stats = m_renderer_stats;
|
|
m_renderer_stats = {};
|
|
}
|
|
|
|
if (ImGui::CollapsingHeader("Renderer Statistics", ImGuiTreeNodeFlags_DefaultOpen))
|
|
{
|
|
const auto& stats = m_last_renderer_stats;
|
|
|
|
ImGui::Columns(2);
|
|
ImGui::SetColumnWidth(0, 200.0f * ImGui::GetIO().DisplayFramebufferScale.x);
|
|
|
|
ImGui::TextUnformatted("Batches Drawn:");
|
|
ImGui::NextColumn();
|
|
ImGui::Text("%u", stats.num_batches);
|
|
ImGui::NextColumn();
|
|
|
|
ImGui::TextUnformatted("VRAM Read Texture Updates:");
|
|
ImGui::NextColumn();
|
|
ImGui::Text("%u", stats.num_vram_read_texture_updates);
|
|
ImGui::NextColumn();
|
|
|
|
ImGui::TextUnformatted("Uniform Buffer Updates: ");
|
|
ImGui::NextColumn();
|
|
ImGui::Text("%u", stats.num_uniform_buffer_updates);
|
|
ImGui::NextColumn();
|
|
|
|
ImGui::Columns(1);
|
|
}
|
|
}
|