1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
// Copyright 2010 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
// ---------------------------------------------------------------------------------------------
// GC graphics pipeline
// ---------------------------------------------------------------------------------------------
// 3d commands are issued through the fifo. The GPU draws to the 2MB EFB.
// The efb can be copied back into ram in two forms: as textures or as XFB.
// The XFB is the region in RAM that the VI chip scans out to the television.
// So, after all rendering to EFB is done, the image is copied into one of two XFBs in RAM.
// Next frame, that one is scanned out and the other one gets the copy. = double buffering.
// ---------------------------------------------------------------------------------------------
#include "VideoCommon/RenderBase.h"
#include <algorithm>
#include <cmath>
#include <memory>
#include <tuple>
#include <fmt/format.h>
#include "Common/Logging/Log.h"
#include "Common/MsgHandler.h"
#include "Core/ConfigManager.h"
#include "Core/System.h"
#include "VideoCommon/FramebufferManager.h"
#include "VideoCommon/PixelEngine.h"
#include "VideoCommon/VideoBackendBase.h"
#include "VideoCommon/VideoCommon.h"
#include "VideoCommon/VideoConfig.h"
std::unique_ptr<Renderer> g_renderer;
Renderer::~Renderer() = default;
void Renderer::ReinterpretPixelData(EFBReinterpretType convtype)
{
g_framebuffer_manager->ReinterpretPixelData(convtype);
}
u32 Renderer::AccessEFB(EFBAccessType type, u32 x, u32 y, u32 poke_data)
{
if (type == EFBAccessType::PeekColor)
{
u32 color = g_framebuffer_manager->PeekEFBColor(x, y);
// a little-endian value is expected to be returned
color = ((color & 0xFF00FF00) | ((color >> 16) & 0xFF) | ((color << 16) & 0xFF0000));
if (bpmem.zcontrol.pixel_format == PixelFormat::RGBA6_Z24)
{
color = RGBA8ToRGBA6ToRGBA8(color);
}
else if (bpmem.zcontrol.pixel_format == PixelFormat::RGB565_Z16)
{
color = RGBA8ToRGB565ToRGBA8(color);
}
if (bpmem.zcontrol.pixel_format != PixelFormat::RGBA6_Z24)
{
color |= 0xFF000000;
}
// check what to do with the alpha channel (GX_PokeAlphaRead)
PixelEngine::AlphaReadMode alpha_read_mode =
Core::System::GetInstance().GetPixelEngine().GetAlphaReadMode();
if (alpha_read_mode == PixelEngine::AlphaReadMode::ReadNone)
{
return color;
}
else if (alpha_read_mode == PixelEngine::AlphaReadMode::ReadFF)
{
return color | 0xFF000000;
}
else
{
if (alpha_read_mode != PixelEngine::AlphaReadMode::Read00)
{
PanicAlertFmt("Invalid PE alpha read mode: {}", static_cast<u16>(alpha_read_mode));
}
return color & 0x00FFFFFF;
}
}
else // if (type == EFBAccessType::PeekZ)
{
// Depth buffer is inverted for improved precision near far plane
float depth = g_framebuffer_manager->PeekEFBDepth(x, y);
if (!g_ActiveConfig.backend_info.bSupportsReversedDepthRange)
depth = 1.0f - depth;
// Convert to 24bit depth
u32 z24depth = std::clamp<u32>(static_cast<u32>(depth * 16777216.0f), 0, 0xFFFFFF);
if (bpmem.zcontrol.pixel_format == PixelFormat::RGB565_Z16)
{
// When in RGB565_Z16 mode, EFB Z peeks return a 16bit value, which is presumably a
// resolved sample from the MSAA buffer.
// Dolphin doesn't currently emulate the 3 sample MSAA mode (and potentially never will)
// it just transparently upgrades the framebuffer to 24bit depth and color and whatever
// level of MSAA and higher Internal Resolution the user has configured.
// This is mostly transparent, unless the game does an EFB read.
// But we can simply convert the 24bit depth on the fly to the 16bit depth the game expects.
return CompressZ16(z24depth, bpmem.zcontrol.zformat);
}
return z24depth;
}
}
void Renderer::PokeEFB(EFBAccessType type, const EfbPokeData* points, size_t num_points)
{
if (type == EFBAccessType::PokeColor)
{
for (size_t i = 0; i < num_points; i++)
{
// Convert to expected format (BGRA->RGBA)
// TODO: Check alpha, depending on mode?
const EfbPokeData& point = points[i];
u32 color = ((point.data & 0xFF00FF00) | ((point.data >> 16) & 0xFF) |
((point.data << 16) & 0xFF0000));
g_framebuffer_manager->PokeEFBColor(point.x, point.y, color);
}
}
else // if (type == EFBAccessType::PokeZ)
{
for (size_t i = 0; i < num_points; i++)
{
// Convert to floating-point depth.
const EfbPokeData& point = points[i];
float depth = float(point.data & 0xFFFFFF) / 16777216.0f;
if (!g_ActiveConfig.backend_info.bSupportsReversedDepthRange)
depth = 1.0f - depth;
g_framebuffer_manager->PokeEFBDepth(point.x, point.y, depth);
}
}
}
|
