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yuzu/src/video_core/renderer_opengl/renderer_opengl.cpp
Andrea Pappacoda cdb240f3d4
chore: make yuzu REUSE compliant 
[REUSE] is a specification that aims at making file copyright
information consistent, so that it can be both human and machine
readable. It basically requires that all files have a header containing
copyright and licensing information. When this isn't possible, like
when dealing with binary assets, generated files or embedded third-party
dependencies, it is permitted to insert copyright information in the
`.reuse/dep5` file.

Oh, and it also requires that all the licenses used in the project are
present in the `LICENSES` folder, that's why the diff is so huge.
This can be done automatically with `reuse download --all`.

The `reuse` tool also contains a handy subcommand that analyzes the
project and tells whether or not the project is (still) compliant,
`reuse lint`.

Following REUSE has a few advantages over the current approach:

- Copyright information is easy to access for users / downstream
- Files like `dist/license.md` do not need to exist anymore, as
  `.reuse/dep5` is used instead
- `reuse lint` makes it easy to ensure that copyright information of
  files like binary assets / images is always accurate and up to date

To add copyright information of files that didn't have it I looked up
who committed what and when, for each file. As yuzu contributors do not
have to sign a CLA or similar I couldn't assume that copyright ownership
was of the "yuzu Emulator Project", so I used the name and/or email of
the commit author instead.

[REUSE]: https://reuse.software

Follow-up to 01cf05bc75
2022-07-27 12:53:49 +02:00

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// SPDX-FileCopyrightText: 2014 Citra Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <algorithm>
#include <cstddef>
#include <cstdlib>
#include <memory>
#include <glad/glad.h>
#include "common/assert.h"
#include "common/logging/log.h"
#include "common/microprofile.h"
#include "common/settings.h"
#include "common/telemetry.h"
#include "core/core_timing.h"
#include "core/frontend/emu_window.h"
#include "core/memory.h"
#include "core/telemetry_session.h"
#include "video_core/host_shaders/fxaa_frag.h"
#include "video_core/host_shaders/fxaa_vert.h"
#include "video_core/host_shaders/opengl_present_frag.h"
#include "video_core/host_shaders/opengl_present_scaleforce_frag.h"
#include "video_core/host_shaders/opengl_present_vert.h"
#include "video_core/host_shaders/present_bicubic_frag.h"
#include "video_core/host_shaders/present_gaussian_frag.h"
#include "video_core/renderer_opengl/gl_rasterizer.h"
#include "video_core/renderer_opengl/gl_shader_manager.h"
#include "video_core/renderer_opengl/gl_shader_util.h"
#include "video_core/renderer_opengl/renderer_opengl.h"
#include "video_core/textures/decoders.h"
namespace OpenGL {
namespace {
constexpr GLint PositionLocation = 0;
constexpr GLint TexCoordLocation = 1;
constexpr GLint ModelViewMatrixLocation = 0;
struct ScreenRectVertex {
constexpr ScreenRectVertex(u32 x, u32 y, GLfloat u, GLfloat v)
: position{{static_cast<GLfloat>(x), static_cast<GLfloat>(y)}}, tex_coord{{u, v}} {}
std::array<GLfloat, 2> position;
std::array<GLfloat, 2> tex_coord;
};
/**
* Defines a 1:1 pixel ortographic projection matrix with (0,0) on the top-left
* corner and (width, height) on the lower-bottom.
*
* The projection part of the matrix is trivial, hence these operations are represented
* by a 3x2 matrix.
*/
std::array<GLfloat, 3 * 2> MakeOrthographicMatrix(float width, float height) {
std::array<GLfloat, 3 * 2> matrix; // Laid out in column-major order
// clang-format off
matrix[0] = 2.f / width; matrix[2] = 0.f; matrix[4] = -1.f;
matrix[1] = 0.f; matrix[3] = -2.f / height; matrix[5] = 1.f;
// Last matrix row is implicitly assumed to be [0, 0, 1].
// clang-format on
return matrix;
}
const char* GetSource(GLenum source) {
switch (source) {
case GL_DEBUG_SOURCE_API:
return "API";
case GL_DEBUG_SOURCE_WINDOW_SYSTEM:
return "WINDOW_SYSTEM";
case GL_DEBUG_SOURCE_SHADER_COMPILER:
return "SHADER_COMPILER";
case GL_DEBUG_SOURCE_THIRD_PARTY:
return "THIRD_PARTY";
case GL_DEBUG_SOURCE_APPLICATION:
return "APPLICATION";
case GL_DEBUG_SOURCE_OTHER:
return "OTHER";
default:
ASSERT(false);
return "Unknown source";
}
}
const char* GetType(GLenum type) {
switch (type) {
case GL_DEBUG_TYPE_ERROR:
return "ERROR";
case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR:
return "DEPRECATED_BEHAVIOR";
case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR:
return "UNDEFINED_BEHAVIOR";
case GL_DEBUG_TYPE_PORTABILITY:
return "PORTABILITY";
case GL_DEBUG_TYPE_PERFORMANCE:
return "PERFORMANCE";
case GL_DEBUG_TYPE_OTHER:
return "OTHER";
case GL_DEBUG_TYPE_MARKER:
return "MARKER";
default:
ASSERT(false);
return "Unknown type";
}
}
void APIENTRY DebugHandler(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length,
const GLchar* message, const void* user_param) {
const char format[] = "{} {} {}: {}";
const char* const str_source = GetSource(source);
const char* const str_type = GetType(type);
switch (severity) {
case GL_DEBUG_SEVERITY_HIGH:
LOG_CRITICAL(Render_OpenGL, format, str_source, str_type, id, message);
break;
case GL_DEBUG_SEVERITY_MEDIUM:
LOG_WARNING(Render_OpenGL, format, str_source, str_type, id, message);
break;
case GL_DEBUG_SEVERITY_NOTIFICATION:
case GL_DEBUG_SEVERITY_LOW:
LOG_DEBUG(Render_OpenGL, format, str_source, str_type, id, message);
break;
}
}
} // Anonymous namespace
RendererOpenGL::RendererOpenGL(Core::TelemetrySession& telemetry_session_,
Core::Frontend::EmuWindow& emu_window_,
Core::Memory::Memory& cpu_memory_, Tegra::GPU& gpu_,
std::unique_ptr<Core::Frontend::GraphicsContext> context_)
: RendererBase{emu_window_, std::move(context_)}, telemetry_session{telemetry_session_},
emu_window{emu_window_}, cpu_memory{cpu_memory_}, gpu{gpu_}, state_tracker{gpu},
program_manager{device},
rasterizer(emu_window, gpu, cpu_memory, device, screen_info, program_manager, state_tracker) {
if (Settings::values.renderer_debug && GLAD_GL_KHR_debug) {
glEnable(GL_DEBUG_OUTPUT);
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
glDebugMessageCallback(DebugHandler, nullptr);
}
AddTelemetryFields();
InitOpenGLObjects();
// Initialize default attributes to match hardware's disabled attributes
GLint max_attribs{};
glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &max_attribs);
for (GLint attrib = 0; attrib < max_attribs; ++attrib) {
glVertexAttrib4f(attrib, 0.0f, 0.0f, 0.0f, 1.0f);
}
// Enable seamless cubemaps when per texture parameters are not available
if (!GLAD_GL_ARB_seamless_cubemap_per_texture && !GLAD_GL_AMD_seamless_cubemap_per_texture) {
glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
}
// Enable unified vertex attributes and query vertex buffer address when the driver supports it
if (device.HasVertexBufferUnifiedMemory()) {
glEnableClientState(GL_VERTEX_ATTRIB_ARRAY_UNIFIED_NV);
glEnableClientState(GL_ELEMENT_ARRAY_UNIFIED_NV);
glMakeNamedBufferResidentNV(vertex_buffer.handle, GL_READ_ONLY);
glGetNamedBufferParameterui64vNV(vertex_buffer.handle, GL_BUFFER_GPU_ADDRESS_NV,
&vertex_buffer_address);
}
}
RendererOpenGL::~RendererOpenGL() = default;
void RendererOpenGL::SwapBuffers(const Tegra::FramebufferConfig* framebuffer) {
if (!framebuffer) {
return;
}
PrepareRendertarget(framebuffer);
RenderScreenshot();
state_tracker.BindFramebuffer(0);
DrawScreen(emu_window.GetFramebufferLayout());
++m_current_frame;
gpu.RendererFrameEndNotify();
rasterizer.TickFrame();
context->SwapBuffers();
render_window.OnFrameDisplayed();
}
void RendererOpenGL::PrepareRendertarget(const Tegra::FramebufferConfig* framebuffer) {
if (!framebuffer) {
return;
}
// If framebuffer is provided, reload it from memory to a texture
if (screen_info.texture.width != static_cast<GLsizei>(framebuffer->width) ||
screen_info.texture.height != static_cast<GLsizei>(framebuffer->height) ||
screen_info.texture.pixel_format != framebuffer->pixel_format ||
gl_framebuffer_data.empty()) {
// Reallocate texture if the framebuffer size has changed.
// This is expected to not happen very often and hence should not be a
// performance problem.
ConfigureFramebufferTexture(screen_info.texture, *framebuffer);
}
// Load the framebuffer from memory, draw it to the screen, and swap buffers
LoadFBToScreenInfo(*framebuffer);
}
void RendererOpenGL::LoadFBToScreenInfo(const Tegra::FramebufferConfig& framebuffer) {
// Framebuffer orientation handling
framebuffer_transform_flags = framebuffer.transform_flags;
framebuffer_crop_rect = framebuffer.crop_rect;
framebuffer_width = framebuffer.width;
framebuffer_height = framebuffer.height;
const VAddr framebuffer_addr{framebuffer.address + framebuffer.offset};
screen_info.was_accelerated =
rasterizer.AccelerateDisplay(framebuffer, framebuffer_addr, framebuffer.stride);
if (screen_info.was_accelerated) {
return;
}
// Reset the screen info's display texture to its own permanent texture
screen_info.display_texture = screen_info.texture.resource.handle;
// TODO(Rodrigo): Read this from HLE
constexpr u32 block_height_log2 = 4;
const auto pixel_format{
VideoCore::Surface::PixelFormatFromGPUPixelFormat(framebuffer.pixel_format)};
const u32 bytes_per_pixel{VideoCore::Surface::BytesPerBlock(pixel_format)};
const u64 size_in_bytes{Tegra::Texture::CalculateSize(
true, bytes_per_pixel, framebuffer.stride, framebuffer.height, 1, block_height_log2, 0)};
const u8* const host_ptr{cpu_memory.GetPointer(framebuffer_addr)};
const std::span<const u8> input_data(host_ptr, size_in_bytes);
Tegra::Texture::UnswizzleTexture(gl_framebuffer_data, input_data, bytes_per_pixel,
framebuffer.width, framebuffer.height, 1, block_height_log2,
0);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
glPixelStorei(GL_UNPACK_ROW_LENGTH, static_cast<GLint>(framebuffer.stride));
// Update existing texture
// TODO: Test what happens on hardware when you change the framebuffer dimensions so that
// they differ from the LCD resolution.
// TODO: Applications could theoretically crash yuzu here by specifying too large
// framebuffer sizes. We should make sure that this cannot happen.
glTextureSubImage2D(screen_info.texture.resource.handle, 0, 0, 0, framebuffer.width,
framebuffer.height, screen_info.texture.gl_format,
screen_info.texture.gl_type, gl_framebuffer_data.data());
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
}
void RendererOpenGL::LoadColorToActiveGLTexture(u8 color_r, u8 color_g, u8 color_b, u8 color_a,
const TextureInfo& texture) {
const u8 framebuffer_data[4] = {color_a, color_b, color_g, color_r};
glClearTexImage(texture.resource.handle, 0, GL_RGBA, GL_UNSIGNED_BYTE, framebuffer_data);
}
void RendererOpenGL::InitOpenGLObjects() {
// Create shader programs
fxaa_vertex = CreateProgram(HostShaders::FXAA_VERT, GL_VERTEX_SHADER);
fxaa_fragment = CreateProgram(HostShaders::FXAA_FRAG, GL_FRAGMENT_SHADER);
present_vertex = CreateProgram(HostShaders::OPENGL_PRESENT_VERT, GL_VERTEX_SHADER);
present_bilinear_fragment = CreateProgram(HostShaders::OPENGL_PRESENT_FRAG, GL_FRAGMENT_SHADER);
present_bicubic_fragment = CreateProgram(HostShaders::PRESENT_BICUBIC_FRAG, GL_FRAGMENT_SHADER);
present_gaussian_fragment =
CreateProgram(HostShaders::PRESENT_GAUSSIAN_FRAG, GL_FRAGMENT_SHADER);
present_scaleforce_fragment =
CreateProgram(fmt::format("#version 460\n{}", HostShaders::OPENGL_PRESENT_SCALEFORCE_FRAG),
GL_FRAGMENT_SHADER);
// Generate presentation sampler
present_sampler.Create();
glSamplerParameteri(present_sampler.handle, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glSamplerParameteri(present_sampler.handle, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
present_sampler_nn.Create();
glSamplerParameteri(present_sampler_nn.handle, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glSamplerParameteri(present_sampler_nn.handle, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
// Generate VBO handle for drawing
vertex_buffer.Create();
// Attach vertex data to VAO
glNamedBufferData(vertex_buffer.handle, sizeof(ScreenRectVertex) * 4, nullptr, GL_STREAM_DRAW);
// Allocate textures for the screen
screen_info.texture.resource.Create(GL_TEXTURE_2D);
const GLuint texture = screen_info.texture.resource.handle;
glTextureStorage2D(texture, 1, GL_RGBA8, 1, 1);
screen_info.display_texture = screen_info.texture.resource.handle;
// Clear screen to black
LoadColorToActiveGLTexture(0, 0, 0, 0, screen_info.texture);
fxaa_framebuffer.Create();
}
void RendererOpenGL::AddTelemetryFields() {
const char* const gl_version{reinterpret_cast<char const*>(glGetString(GL_VERSION))};
const char* const gpu_vendor{reinterpret_cast<char const*>(glGetString(GL_VENDOR))};
const char* const gpu_model{reinterpret_cast<char const*>(glGetString(GL_RENDERER))};
LOG_INFO(Render_OpenGL, "GL_VERSION: {}", gl_version);
LOG_INFO(Render_OpenGL, "GL_VENDOR: {}", gpu_vendor);
LOG_INFO(Render_OpenGL, "GL_RENDERER: {}", gpu_model);
constexpr auto user_system = Common::Telemetry::FieldType::UserSystem;
telemetry_session.AddField(user_system, "GPU_Vendor", std::string(gpu_vendor));
telemetry_session.AddField(user_system, "GPU_Model", std::string(gpu_model));
telemetry_session.AddField(user_system, "GPU_OpenGL_Version", std::string(gl_version));
}
void RendererOpenGL::ConfigureFramebufferTexture(TextureInfo& texture,
const Tegra::FramebufferConfig& framebuffer) {
texture.width = framebuffer.width;
texture.height = framebuffer.height;
texture.pixel_format = framebuffer.pixel_format;
const auto pixel_format{
VideoCore::Surface::PixelFormatFromGPUPixelFormat(framebuffer.pixel_format)};
const u32 bytes_per_pixel{VideoCore::Surface::BytesPerBlock(pixel_format)};
gl_framebuffer_data.resize(texture.width * texture.height * bytes_per_pixel);
GLint internal_format;
switch (framebuffer.pixel_format) {
case Service::android::PixelFormat::Rgba8888:
internal_format = GL_RGBA8;
texture.gl_format = GL_RGBA;
texture.gl_type = GL_UNSIGNED_INT_8_8_8_8_REV;
break;
case Service::android::PixelFormat::Rgb565:
internal_format = GL_RGB565;
texture.gl_format = GL_RGB;
texture.gl_type = GL_UNSIGNED_SHORT_5_6_5;
break;
default:
internal_format = GL_RGBA8;
texture.gl_format = GL_RGBA;
texture.gl_type = GL_UNSIGNED_INT_8_8_8_8_REV;
// UNIMPLEMENTED_MSG("Unknown framebuffer pixel format: {}",
// static_cast<u32>(framebuffer.pixel_format));
}
texture.resource.Release();
texture.resource.Create(GL_TEXTURE_2D);
glTextureStorage2D(texture.resource.handle, 1, internal_format, texture.width, texture.height);
fxaa_texture.Release();
fxaa_texture.Create(GL_TEXTURE_2D);
glTextureStorage2D(fxaa_texture.handle, 1, GL_RGBA16F,
Settings::values.resolution_info.ScaleUp(screen_info.texture.width),
Settings::values.resolution_info.ScaleUp(screen_info.texture.height));
glNamedFramebufferTexture(fxaa_framebuffer.handle, GL_COLOR_ATTACHMENT0, fxaa_texture.handle,
0);
}
void RendererOpenGL::DrawScreen(const Layout::FramebufferLayout& layout) {
// TODO: Signal state tracker about these changes
state_tracker.NotifyScreenDrawVertexArray();
state_tracker.NotifyPolygonModes();
state_tracker.NotifyViewport0();
state_tracker.NotifyScissor0();
state_tracker.NotifyColorMask(0);
state_tracker.NotifyBlend0();
state_tracker.NotifyFramebuffer();
state_tracker.NotifyFrontFace();
state_tracker.NotifyCullTest();
state_tracker.NotifyDepthTest();
state_tracker.NotifyStencilTest();
state_tracker.NotifyPolygonOffset();
state_tracker.NotifyRasterizeEnable();
state_tracker.NotifyFramebufferSRGB();
state_tracker.NotifyLogicOp();
state_tracker.NotifyClipControl();
state_tracker.NotifyAlphaTest();
state_tracker.ClipControl(GL_LOWER_LEFT, GL_ZERO_TO_ONE);
// Update background color before drawing
glClearColor(Settings::values.bg_red.GetValue() / 255.0f,
Settings::values.bg_green.GetValue() / 255.0f,
Settings::values.bg_blue.GetValue() / 255.0f, 1.0f);
glEnable(GL_CULL_FACE);
glDisable(GL_COLOR_LOGIC_OP);
glDisable(GL_DEPTH_TEST);
glDisable(GL_STENCIL_TEST);
glDisable(GL_POLYGON_OFFSET_FILL);
glDisable(GL_RASTERIZER_DISCARD);
glDisable(GL_ALPHA_TEST);
glDisablei(GL_BLEND, 0);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glCullFace(GL_BACK);
glFrontFace(GL_CW);
glColorMaski(0, GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glBindTextureUnit(0, screen_info.display_texture);
if (Settings::values.anti_aliasing.GetValue() == Settings::AntiAliasing::Fxaa) {
program_manager.BindPresentPrograms(fxaa_vertex.handle, fxaa_fragment.handle);
glEnablei(GL_SCISSOR_TEST, 0);
auto viewport_width = screen_info.texture.width;
auto scissor_width = framebuffer_crop_rect.GetWidth();
if (scissor_width <= 0) {
scissor_width = viewport_width;
}
auto viewport_height = screen_info.texture.height;
auto scissor_height = framebuffer_crop_rect.GetHeight();
if (scissor_height <= 0) {
scissor_height = viewport_height;
}
if (screen_info.was_accelerated) {
viewport_width = Settings::values.resolution_info.ScaleUp(viewport_width);
scissor_width = Settings::values.resolution_info.ScaleUp(scissor_width);
viewport_height = Settings::values.resolution_info.ScaleUp(viewport_height);
scissor_height = Settings::values.resolution_info.ScaleUp(scissor_height);
}
glScissorIndexed(0, 0, 0, scissor_width, scissor_height);
glViewportIndexedf(0, 0.0f, 0.0f, static_cast<GLfloat>(viewport_width),
static_cast<GLfloat>(viewport_height));
glDepthRangeIndexed(0, 0.0, 0.0);
glBindSampler(0, present_sampler.handle);
GLint old_read_fb;
GLint old_draw_fb;
glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &old_read_fb);
glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &old_draw_fb);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fxaa_framebuffer.handle);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glBindFramebuffer(GL_READ_FRAMEBUFFER, old_read_fb);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, old_draw_fb);
glBindTextureUnit(0, fxaa_texture.handle);
}
const std::array ortho_matrix =
MakeOrthographicMatrix(static_cast<float>(layout.width), static_cast<float>(layout.height));
const auto fragment_handle = [this]() {
switch (Settings::values.scaling_filter.GetValue()) {
case Settings::ScalingFilter::NearestNeighbor:
case Settings::ScalingFilter::Bilinear:
return present_bilinear_fragment.handle;
case Settings::ScalingFilter::Bicubic:
return present_bicubic_fragment.handle;
case Settings::ScalingFilter::Gaussian:
return present_gaussian_fragment.handle;
case Settings::ScalingFilter::ScaleForce:
return present_scaleforce_fragment.handle;
case Settings::ScalingFilter::Fsr:
LOG_WARNING(
Render_OpenGL,
"FidelityFX Super Resolution is not supported in OpenGL, changing to ScaleForce");
return present_scaleforce_fragment.handle;
default:
return present_bilinear_fragment.handle;
}
}();
program_manager.BindPresentPrograms(present_vertex.handle, fragment_handle);
glProgramUniformMatrix3x2fv(present_vertex.handle, ModelViewMatrixLocation, 1, GL_FALSE,
ortho_matrix.data());
const auto& texcoords = screen_info.display_texcoords;
auto left = texcoords.left;
auto right = texcoords.right;
if (framebuffer_transform_flags != Service::android::BufferTransformFlags::Unset) {
if (framebuffer_transform_flags == Service::android::BufferTransformFlags::FlipV) {
// Flip the framebuffer vertically
left = texcoords.right;
right = texcoords.left;
} else {
// Other transformations are unsupported
LOG_CRITICAL(Render_OpenGL, "Unsupported framebuffer_transform_flags={}",
framebuffer_transform_flags);
UNIMPLEMENTED();
}
}
ASSERT_MSG(framebuffer_crop_rect.top == 0, "Unimplemented");
ASSERT_MSG(framebuffer_crop_rect.left == 0, "Unimplemented");
f32 scale_u = static_cast<f32>(framebuffer_width) / static_cast<f32>(screen_info.texture.width);
f32 scale_v =
static_cast<f32>(framebuffer_height) / static_cast<f32>(screen_info.texture.height);
// Scale the output by the crop width/height. This is commonly used with 1280x720 rendering
// (e.g. handheld mode) on a 1920x1080 framebuffer.
if (framebuffer_crop_rect.GetWidth() > 0) {
scale_u = static_cast<f32>(framebuffer_crop_rect.GetWidth()) /
static_cast<f32>(screen_info.texture.width);
}
if (framebuffer_crop_rect.GetHeight() > 0) {
scale_v = static_cast<f32>(framebuffer_crop_rect.GetHeight()) /
static_cast<f32>(screen_info.texture.height);
}
if (Settings::values.anti_aliasing.GetValue() == Settings::AntiAliasing::Fxaa &&
!screen_info.was_accelerated) {
scale_u /= Settings::values.resolution_info.up_factor;
scale_v /= Settings::values.resolution_info.up_factor;
}
const auto& screen = layout.screen;
const std::array vertices = {
ScreenRectVertex(screen.left, screen.top, texcoords.top * scale_u, left * scale_v),
ScreenRectVertex(screen.right, screen.top, texcoords.bottom * scale_u, left * scale_v),
ScreenRectVertex(screen.left, screen.bottom, texcoords.top * scale_u, right * scale_v),
ScreenRectVertex(screen.right, screen.bottom, texcoords.bottom * scale_u, right * scale_v),
};
glNamedBufferSubData(vertex_buffer.handle, 0, sizeof(vertices), std::data(vertices));
if (screen_info.display_srgb) {
glEnable(GL_FRAMEBUFFER_SRGB);
} else {
glDisable(GL_FRAMEBUFFER_SRGB);
}
glDisablei(GL_SCISSOR_TEST, 0);
glViewportIndexedf(0, 0.0f, 0.0f, static_cast<GLfloat>(layout.width),
static_cast<GLfloat>(layout.height));
glEnableVertexAttribArray(PositionLocation);
glEnableVertexAttribArray(TexCoordLocation);
glVertexAttribDivisor(PositionLocation, 0);
glVertexAttribDivisor(TexCoordLocation, 0);
glVertexAttribFormat(PositionLocation, 2, GL_FLOAT, GL_FALSE,
offsetof(ScreenRectVertex, position));
glVertexAttribFormat(TexCoordLocation, 2, GL_FLOAT, GL_FALSE,
offsetof(ScreenRectVertex, tex_coord));
glVertexAttribBinding(PositionLocation, 0);
glVertexAttribBinding(TexCoordLocation, 0);
if (device.HasVertexBufferUnifiedMemory()) {
glBindVertexBuffer(0, 0, 0, sizeof(ScreenRectVertex));
glBufferAddressRangeNV(GL_VERTEX_ATTRIB_ARRAY_ADDRESS_NV, 0, vertex_buffer_address,
sizeof(vertices));
} else {
glBindVertexBuffer(0, vertex_buffer.handle, 0, sizeof(ScreenRectVertex));
}
if (Settings::values.scaling_filter.GetValue() != Settings::ScalingFilter::NearestNeighbor) {
glBindSampler(0, present_sampler.handle);
} else {
glBindSampler(0, present_sampler_nn.handle);
}
glClear(GL_COLOR_BUFFER_BIT);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
// TODO
// program_manager.RestoreGuestPipeline();
}
void RendererOpenGL::RenderScreenshot() {
if (!renderer_settings.screenshot_requested) {
return;
}
GLint old_read_fb;
GLint old_draw_fb;
glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &old_read_fb);
glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &old_draw_fb);
// Draw the current frame to the screenshot framebuffer
screenshot_framebuffer.Create();
glBindFramebuffer(GL_FRAMEBUFFER, screenshot_framebuffer.handle);
const Layout::FramebufferLayout layout{renderer_settings.screenshot_framebuffer_layout};
GLuint renderbuffer;
glGenRenderbuffers(1, &renderbuffer);
glBindRenderbuffer(GL_RENDERBUFFER, renderbuffer);
glRenderbufferStorage(GL_RENDERBUFFER, screen_info.display_srgb ? GL_SRGB8 : GL_RGB8,
layout.width, layout.height);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, renderbuffer);
DrawScreen(layout);
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
glPixelStorei(GL_PACK_ROW_LENGTH, 0);
glReadPixels(0, 0, layout.width, layout.height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
renderer_settings.screenshot_bits);
screenshot_framebuffer.Release();
glDeleteRenderbuffers(1, &renderbuffer);
glBindFramebuffer(GL_READ_FRAMEBUFFER, old_read_fb);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, old_draw_fb);
renderer_settings.screenshot_complete_callback(true);
renderer_settings.screenshot_requested = false;
}
} // namespace OpenGL
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