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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <array>
#include <cstddef>
#include <cstring>
#include <optional>
#include <vector>
#include <glad/glad.h>
#include "common/logging/log.h"
#include "common/scope_exit.h"
#include "video_core/renderer_opengl/gl_device.h"
#include "video_core/renderer_opengl/gl_resource_manager.h"
namespace OpenGL {
namespace {
// One uniform block is reserved for emulation purposes
constexpr u32 ReservedUniformBlocks = 1;
constexpr u32 NumStages = 5;
constexpr std::array LimitUBOs = {GL_MAX_VERTEX_UNIFORM_BLOCKS, GL_MAX_TESS_CONTROL_UNIFORM_BLOCKS,
GL_MAX_TESS_EVALUATION_UNIFORM_BLOCKS,
GL_MAX_GEOMETRY_UNIFORM_BLOCKS, GL_MAX_FRAGMENT_UNIFORM_BLOCKS};
constexpr std::array LimitSSBOs = {
GL_MAX_VERTEX_SHADER_STORAGE_BLOCKS, GL_MAX_TESS_CONTROL_SHADER_STORAGE_BLOCKS,
GL_MAX_TESS_EVALUATION_SHADER_STORAGE_BLOCKS, GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS,
GL_MAX_FRAGMENT_SHADER_STORAGE_BLOCKS};
constexpr std::array LimitSamplers = {
GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, GL_MAX_TESS_CONTROL_TEXTURE_IMAGE_UNITS,
GL_MAX_TESS_EVALUATION_TEXTURE_IMAGE_UNITS, GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS,
GL_MAX_TEXTURE_IMAGE_UNITS};
constexpr std::array LimitImages = {GL_MAX_VERTEX_IMAGE_UNIFORMS,
GL_MAX_TESS_CONTROL_IMAGE_UNIFORMS,
GL_MAX_TESS_EVALUATION_IMAGE_UNIFORMS,
GL_MAX_GEOMETRY_IMAGE_UNIFORMS, GL_MAX_FRAGMENT_IMAGE_UNIFORMS};
template <typename T>
T GetInteger(GLenum pname) {
GLint temporary;
glGetIntegerv(pname, &temporary);
return static_cast<T>(temporary);
}
bool TestProgram(const GLchar* glsl) {
const GLuint shader{glCreateShaderProgramv(GL_VERTEX_SHADER, 1, &glsl)};
GLint link_status;
glGetProgramiv(shader, GL_LINK_STATUS, &link_status);
glDeleteProgram(shader);
return link_status == GL_TRUE;
}
std::vector<std::string_view> GetExtensions() {
GLint num_extensions;
glGetIntegerv(GL_NUM_EXTENSIONS, &num_extensions);
std::vector<std::string_view> extensions;
extensions.reserve(num_extensions);
for (GLint index = 0; index < num_extensions; ++index) {
extensions.push_back(
reinterpret_cast<const char*>(glGetStringi(GL_EXTENSIONS, static_cast<GLuint>(index))));
}
return extensions;
}
bool HasExtension(const std::vector<std::string_view>& images, std::string_view extension) {
return std::find(images.begin(), images.end(), extension) != images.end();
}
u32 Extract(u32& base, u32& num, u32 amount, std::optional<GLenum> limit = {}) {
ASSERT(num >= amount);
if (limit) {
amount = std::min(amount, GetInteger<u32>(*limit));
}
num -= amount;
return std::exchange(base, base + amount);
}
std::array<Device::BaseBindings, Tegra::Engines::MaxShaderTypes> BuildBaseBindings() noexcept {
std::array<Device::BaseBindings, Tegra::Engines::MaxShaderTypes> bindings;
static std::array<std::size_t, 5> stage_swizzle = {0, 1, 2, 3, 4};
const u32 total_ubos = GetInteger<u32>(GL_MAX_UNIFORM_BUFFER_BINDINGS);
const u32 total_ssbos = GetInteger<u32>(GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS);
const u32 total_samplers = GetInteger<u32>(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS);
u32 num_ubos = total_ubos - ReservedUniformBlocks;
u32 num_ssbos = total_ssbos;
u32 num_samplers = total_samplers;
u32 base_ubo = ReservedUniformBlocks;
u32 base_ssbo = 0;
u32 base_samplers = 0;
for (std::size_t i = 0; i < NumStages; ++i) {
const std::size_t stage = stage_swizzle[i];
bindings[stage] = {
Extract(base_ubo, num_ubos, total_ubos / NumStages, LimitUBOs[stage]),
Extract(base_ssbo, num_ssbos, total_ssbos / NumStages, LimitSSBOs[stage]),
Extract(base_samplers, num_samplers, total_samplers / NumStages, LimitSamplers[stage])};
}
u32 num_images = GetInteger<u32>(GL_MAX_IMAGE_UNITS);
u32 base_images = 0;
// Reserve more image bindings on fragment and vertex stages.
bindings[4].image =
Extract(base_images, num_images, num_images / NumStages + 2, LimitImages[4]);
bindings[0].image =
Extract(base_images, num_images, num_images / NumStages + 1, LimitImages[0]);
// Reserve the other image bindings.
const u32 total_extracted_images = num_images / (NumStages - 2);
for (std::size_t i = 2; i < NumStages; ++i) {
const std::size_t stage = stage_swizzle[i];
bindings[stage].image =
Extract(base_images, num_images, total_extracted_images, LimitImages[stage]);
}
// Compute doesn't care about any of this.
bindings[5] = {0, 0, 0, 0};
return bindings;
}
} // Anonymous namespace
Device::Device() : base_bindings{BuildBaseBindings()} {
const std::string_view vendor = reinterpret_cast<const char*>(glGetString(GL_VENDOR));
const auto renderer = reinterpret_cast<const char*>(glGetString(GL_RENDERER));
const std::vector extensions = GetExtensions();
const bool is_nvidia = vendor == "NVIDIA Corporation";
const bool is_amd = vendor == "ATI Technologies Inc.";
const bool is_intel = vendor == "Intel";
const bool is_intel_proprietary = is_intel && std::strstr(renderer, "Mesa") == nullptr;
uniform_buffer_alignment = GetInteger<std::size_t>(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT);
shader_storage_alignment = GetInteger<std::size_t>(GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT);
max_vertex_attributes = GetInteger<u32>(GL_MAX_VERTEX_ATTRIBS);
max_varyings = GetInteger<u32>(GL_MAX_VARYING_VECTORS);
has_warp_intrinsics = GLAD_GL_NV_gpu_shader5 && GLAD_GL_NV_shader_thread_group &&
GLAD_GL_NV_shader_thread_shuffle;
has_shader_ballot = GLAD_GL_ARB_shader_ballot;
has_vertex_viewport_layer = GLAD_GL_ARB_shader_viewport_layer_array;
has_image_load_formatted = HasExtension(extensions, "GL_EXT_shader_image_load_formatted");
has_variable_aoffi = TestVariableAoffi();
has_component_indexing_bug = is_amd;
has_precise_bug = TestPreciseBug();
has_broken_compute = is_intel_proprietary;
has_fast_buffer_sub_data = is_nvidia;
LOG_INFO(Render_OpenGL, "Renderer_VariableAOFFI: {}", has_variable_aoffi);
LOG_INFO(Render_OpenGL, "Renderer_ComponentIndexingBug: {}", has_component_indexing_bug);
LOG_INFO(Render_OpenGL, "Renderer_PreciseBug: {}", has_precise_bug);
}
Device::Device(std::nullptr_t) {
uniform_buffer_alignment = 0;
max_vertex_attributes = 16;
max_varyings = 15;
has_warp_intrinsics = true;
has_shader_ballot = true;
has_vertex_viewport_layer = true;
has_image_load_formatted = true;
has_variable_aoffi = true;
has_component_indexing_bug = false;
has_broken_compute = false;
has_precise_bug = false;
}
bool Device::TestVariableAoffi() {
return TestProgram(R"(#version 430 core
// This is a unit test, please ignore me on apitrace bug reports.
uniform sampler2D tex;
uniform ivec2 variable_offset;
out vec4 output_attribute;
void main() {
output_attribute = textureOffset(tex, vec2(0), variable_offset);
})");
}
bool Device::TestPreciseBug() {
return !TestProgram(R"(#version 430 core
in vec3 coords;
out float out_value;
uniform sampler2DShadow tex;
void main() {
precise float tmp_value = vec4(texture(tex, coords)).x;
out_value = tmp_value;
})");
}
} // namespace OpenGL
|
