1 files changed, 519 insertions, 0 deletions

diff --git a/src/video_core/renderer_opengl/gl_blit_screen.cpp b/src/video_core/renderer_opengl/gl_blit_screen.cpp
new file mode 100644
index 000000000..88757ba38
--- /dev/null
+++ b/src/video_core/renderer_opengl/gl_blit_screen.cpp
@@ -0,0 +1,519 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "video_core/framebuffer_config.h"
+#include "video_core/host_shaders/ffx_a_h.h"
+#include "video_core/host_shaders/ffx_fsr1_h.h"
+#include "video_core/host_shaders/full_screen_triangle_vert.h"
+#include "video_core/host_shaders/fxaa_frag.h"
+#include "video_core/host_shaders/fxaa_vert.h"
+#include "video_core/host_shaders/opengl_fidelityfx_fsr_easu_frag.h"
+#include "video_core/host_shaders/opengl_fidelityfx_fsr_frag.h"
+#include "video_core/host_shaders/opengl_fidelityfx_fsr_rcas_frag.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/opengl_smaa_glsl.h"
+#include "video_core/host_shaders/present_bicubic_frag.h"
+#include "video_core/host_shaders/present_gaussian_frag.h"
+#include "video_core/host_shaders/smaa_blending_weight_calculation_frag.h"
+#include "video_core/host_shaders/smaa_blending_weight_calculation_vert.h"
+#include "video_core/host_shaders/smaa_edge_detection_frag.h"
+#include "video_core/host_shaders/smaa_edge_detection_vert.h"
+#include "video_core/host_shaders/smaa_neighborhood_blending_frag.h"
+#include "video_core/host_shaders/smaa_neighborhood_blending_vert.h"
+#include "video_core/renderer_opengl/gl_blit_screen.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/gl_state_tracker.h"
+#include "video_core/smaa_area_tex.h"
+#include "video_core/smaa_search_tex.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;
+}
+} // namespace
+
+BlitScreen::BlitScreen(RasterizerOpenGL& rasterizer_,
+                       Tegra::MaxwellDeviceMemoryManager& device_memory_,
+                       StateTracker& state_tracker_, ProgramManager& program_manager_,
+                       Device& device_)
+    : rasterizer(rasterizer_), device_memory(device_memory_), state_tracker(state_tracker_),
+      program_manager(program_manager_), device(device_) {
+    // Create shader programs
+    fxaa_vertex = CreateProgram(HostShaders::FXAA_VERT, GL_VERTEX_SHADER);
+    fxaa_fragment = CreateProgram(HostShaders::FXAA_FRAG, GL_FRAGMENT_SHADER);
+
+    const auto replace_include = [](std::string& shader_source, std::string_view include_name,
+                                    std::string_view include_content) {
+        const std::string include_string = fmt::format("#include \"{}\"", include_name);
+        const std::size_t pos = shader_source.find(include_string);
+        ASSERT(pos != std::string::npos);
+        shader_source.replace(pos, include_string.size(), include_content);
+    };
+
+    const auto SmaaShader = [&](std::string_view specialized_source, GLenum stage) {
+        std::string shader_source{specialized_source};
+        replace_include(shader_source, "opengl_smaa.glsl", HostShaders::OPENGL_SMAA_GLSL);
+        return CreateProgram(shader_source, stage);
+    };
+
+    smaa_edge_detection_vert = SmaaShader(HostShaders::SMAA_EDGE_DETECTION_VERT, GL_VERTEX_SHADER);
+    smaa_edge_detection_frag =
+        SmaaShader(HostShaders::SMAA_EDGE_DETECTION_FRAG, GL_FRAGMENT_SHADER);
+    smaa_blending_weight_calculation_vert =
+        SmaaShader(HostShaders::SMAA_BLENDING_WEIGHT_CALCULATION_VERT, GL_VERTEX_SHADER);
+    smaa_blending_weight_calculation_frag =
+        SmaaShader(HostShaders::SMAA_BLENDING_WEIGHT_CALCULATION_FRAG, GL_FRAGMENT_SHADER);
+    smaa_neighborhood_blending_vert =
+        SmaaShader(HostShaders::SMAA_NEIGHBORHOOD_BLENDING_VERT, GL_VERTEX_SHADER);
+    smaa_neighborhood_blending_frag =
+        SmaaShader(HostShaders::SMAA_NEIGHBORHOOD_BLENDING_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);
+
+    std::string fsr_source{HostShaders::OPENGL_FIDELITYFX_FSR_FRAG};
+    replace_include(fsr_source, "ffx_a.h", HostShaders::FFX_A_H);
+    replace_include(fsr_source, "ffx_fsr1.h", HostShaders::FFX_FSR1_H);
+
+    std::string fsr_easu_frag_source{HostShaders::OPENGL_FIDELITYFX_FSR_EASU_FRAG};
+    std::string fsr_rcas_frag_source{HostShaders::OPENGL_FIDELITYFX_FSR_RCAS_FRAG};
+    replace_include(fsr_easu_frag_source, "opengl_fidelityfx_fsr.frag", fsr_source);
+    replace_include(fsr_rcas_frag_source, "opengl_fidelityfx_fsr.frag", fsr_source);
+
+    fsr = std::make_unique<FSR>(HostShaders::FULL_SCREEN_TRIANGLE_VERT, fsr_easu_frag_source,
+                                fsr_rcas_frag_source);
+
+    // 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);
+    glSamplerParameteri(present_sampler.handle, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glSamplerParameteri(present_sampler.handle, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    glSamplerParameteri(present_sampler.handle, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
+
+    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);
+    glSamplerParameteri(present_sampler_nn.handle, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glSamplerParameteri(present_sampler_nn.handle, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    glSamplerParameteri(present_sampler_nn.handle, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
+
+    // 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
+    framebuffer_texture.resource.Create(GL_TEXTURE_2D);
+
+    const GLuint texture = framebuffer_texture.resource.handle;
+    glTextureStorage2D(texture, 1, GL_RGBA8, 1, 1);
+
+    // Clear screen to black
+    const u8 framebuffer_data[4] = {0, 0, 0, 0};
+    glClearTexImage(framebuffer_texture.resource.handle, 0, GL_RGBA, GL_UNSIGNED_BYTE,
+                    framebuffer_data);
+
+    aa_framebuffer.Create();
+
+    smaa_area_tex.Create(GL_TEXTURE_2D);
+    glTextureStorage2D(smaa_area_tex.handle, 1, GL_RG8, AREATEX_WIDTH, AREATEX_HEIGHT);
+    glTextureSubImage2D(smaa_area_tex.handle, 0, 0, 0, AREATEX_WIDTH, AREATEX_HEIGHT, GL_RG,
+                        GL_UNSIGNED_BYTE, areaTexBytes);
+    smaa_search_tex.Create(GL_TEXTURE_2D);
+    glTextureStorage2D(smaa_search_tex.handle, 1, GL_R8, SEARCHTEX_WIDTH, SEARCHTEX_HEIGHT);
+    glTextureSubImage2D(smaa_search_tex.handle, 0, 0, 0, SEARCHTEX_WIDTH, SEARCHTEX_HEIGHT, GL_RED,
+                        GL_UNSIGNED_BYTE, searchTexBytes);
+
+    // 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);
+    }
+}
+
+FramebufferTextureInfo BlitScreen::PrepareRenderTarget(
+    const Tegra::FramebufferConfig& framebuffer) {
+    // If framebuffer is provided, reload it from memory to a texture
+    if (framebuffer_texture.width != static_cast<GLsizei>(framebuffer.width) ||
+        framebuffer_texture.height != static_cast<GLsizei>(framebuffer.height) ||
+        framebuffer_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(framebuffer);
+    }
+
+    // Load the framebuffer from memory if needed
+    return LoadFBToScreenInfo(framebuffer);
+}
+
+FramebufferTextureInfo BlitScreen::LoadFBToScreenInfo(const Tegra::FramebufferConfig& framebuffer) {
+    const DAddr framebuffer_addr{framebuffer.address + framebuffer.offset};
+    const auto accelerated_info =
+        rasterizer.AccelerateDisplay(framebuffer, framebuffer_addr, framebuffer.stride);
+    if (accelerated_info) {
+        return *accelerated_info;
+    }
+
+    // Reset the screen info's display texture to its own permanent texture
+    FramebufferTextureInfo info{};
+    info.display_texture = framebuffer_texture.resource.handle;
+    info.width = framebuffer.width;
+    info.height = framebuffer.height;
+    info.scaled_width = framebuffer.width;
+    info.scaled_height = framebuffer.height;
+
+    // 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{device_memory.GetPointer<u8>(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(framebuffer_texture.resource.handle, 0, 0, 0, framebuffer.width,
+                        framebuffer.height, framebuffer_texture.gl_format,
+                        framebuffer_texture.gl_type, gl_framebuffer_data.data());
+
+    glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+
+    return info;
+}
+
+void BlitScreen::ConfigureFramebufferTexture(const Tegra::FramebufferConfig& framebuffer) {
+    framebuffer_texture.width = framebuffer.width;
+    framebuffer_texture.height = framebuffer.height;
+    framebuffer_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(framebuffer_texture.width * framebuffer_texture.height *
+                               bytes_per_pixel);
+
+    GLint internal_format;
+    switch (framebuffer.pixel_format) {
+    case Service::android::PixelFormat::Rgba8888:
+        internal_format = GL_RGBA8;
+        framebuffer_texture.gl_format = GL_RGBA;
+        framebuffer_texture.gl_type = GL_UNSIGNED_INT_8_8_8_8_REV;
+        break;
+    case Service::android::PixelFormat::Rgb565:
+        internal_format = GL_RGB565;
+        framebuffer_texture.gl_format = GL_RGB;
+        framebuffer_texture.gl_type = GL_UNSIGNED_SHORT_5_6_5;
+        break;
+    default:
+        internal_format = GL_RGBA8;
+        framebuffer_texture.gl_format = GL_RGBA;
+        framebuffer_texture.gl_type = GL_UNSIGNED_INT_8_8_8_8_REV;
+        // UNIMPLEMENTED_MSG("Unknown framebuffer pixel format: {}",
+        //                   static_cast<u32>(framebuffer.pixel_format));
+        break;
+    }
+
+    framebuffer_texture.resource.Release();
+    framebuffer_texture.resource.Create(GL_TEXTURE_2D);
+    glTextureStorage2D(framebuffer_texture.resource.handle, 1, internal_format,
+                       framebuffer_texture.width, framebuffer_texture.height);
+    aa_texture.Release();
+    aa_texture.Create(GL_TEXTURE_2D);
+    glTextureStorage2D(aa_texture.handle, 1, GL_RGBA16F,
+                       Settings::values.resolution_info.ScaleUp(framebuffer_texture.width),
+                       Settings::values.resolution_info.ScaleUp(framebuffer_texture.height));
+    glNamedFramebufferTexture(aa_framebuffer.handle, GL_COLOR_ATTACHMENT0, aa_texture.handle, 0);
+    smaa_edges_tex.Release();
+    smaa_edges_tex.Create(GL_TEXTURE_2D);
+    glTextureStorage2D(smaa_edges_tex.handle, 1, GL_RG16F,
+                       Settings::values.resolution_info.ScaleUp(framebuffer_texture.width),
+                       Settings::values.resolution_info.ScaleUp(framebuffer_texture.height));
+    smaa_blend_tex.Release();
+    smaa_blend_tex.Create(GL_TEXTURE_2D);
+    glTextureStorage2D(smaa_blend_tex.handle, 1, GL_RGBA16F,
+                       Settings::values.resolution_info.ScaleUp(framebuffer_texture.width),
+                       Settings::values.resolution_info.ScaleUp(framebuffer_texture.height));
+}
+
+void BlitScreen::DrawScreen(const Tegra::FramebufferConfig& framebuffer,
+                            const Layout::FramebufferLayout& layout) {
+    FramebufferTextureInfo info = PrepareRenderTarget(framebuffer);
+    const auto crop = Tegra::NormalizeCrop(framebuffer, info.width, info.height);
+
+    // 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);
+
+    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);
+    glDepthRangeIndexed(0, 0.0, 0.0);
+
+    glBindTextureUnit(0, info.display_texture);
+
+    auto anti_aliasing = Settings::values.anti_aliasing.GetValue();
+    if (anti_aliasing >= Settings::AntiAliasing::MaxEnum) {
+        LOG_ERROR(Render_OpenGL, "Invalid antialiasing option selected {}", anti_aliasing);
+        anti_aliasing = Settings::AntiAliasing::None;
+        Settings::values.anti_aliasing.SetValue(anti_aliasing);
+    }
+
+    if (anti_aliasing != Settings::AntiAliasing::None) {
+        glEnablei(GL_SCISSOR_TEST, 0);
+        auto scissor_width = Settings::values.resolution_info.ScaleUp(framebuffer_texture.width);
+        auto viewport_width = static_cast<GLfloat>(scissor_width);
+        auto scissor_height = Settings::values.resolution_info.ScaleUp(framebuffer_texture.height);
+        auto viewport_height = static_cast<GLfloat>(scissor_height);
+
+        glScissorIndexed(0, 0, 0, scissor_width, scissor_height);
+        glViewportIndexedf(0, 0.0f, 0.0f, viewport_width, viewport_height);
+
+        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);
+
+        switch (anti_aliasing) {
+        case Settings::AntiAliasing::Fxaa: {
+            program_manager.BindPresentPrograms(fxaa_vertex.handle, fxaa_fragment.handle);
+            glBindFramebuffer(GL_DRAW_FRAMEBUFFER, aa_framebuffer.handle);
+            glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+        } break;
+        case Settings::AntiAliasing::Smaa: {
+            glClearColor(0, 0, 0, 0);
+            glFrontFace(GL_CCW);
+            glBindFramebuffer(GL_DRAW_FRAMEBUFFER, aa_framebuffer.handle);
+            glBindSampler(1, present_sampler.handle);
+            glBindSampler(2, present_sampler.handle);
+
+            glNamedFramebufferTexture(aa_framebuffer.handle, GL_COLOR_ATTACHMENT0,
+                                      smaa_edges_tex.handle, 0);
+            glClear(GL_COLOR_BUFFER_BIT);
+            program_manager.BindPresentPrograms(smaa_edge_detection_vert.handle,
+                                                smaa_edge_detection_frag.handle);
+            glDrawArrays(GL_TRIANGLES, 0, 3);
+
+            glBindTextureUnit(0, smaa_edges_tex.handle);
+            glBindTextureUnit(1, smaa_area_tex.handle);
+            glBindTextureUnit(2, smaa_search_tex.handle);
+            glNamedFramebufferTexture(aa_framebuffer.handle, GL_COLOR_ATTACHMENT0,
+                                      smaa_blend_tex.handle, 0);
+            glClear(GL_COLOR_BUFFER_BIT);
+            program_manager.BindPresentPrograms(smaa_blending_weight_calculation_vert.handle,
+                                                smaa_blending_weight_calculation_frag.handle);
+            glDrawArrays(GL_TRIANGLES, 0, 3);
+
+            glBindTextureUnit(0, info.display_texture);
+            glBindTextureUnit(1, smaa_blend_tex.handle);
+            glNamedFramebufferTexture(aa_framebuffer.handle, GL_COLOR_ATTACHMENT0,
+                                      aa_texture.handle, 0);
+            program_manager.BindPresentPrograms(smaa_neighborhood_blending_vert.handle,
+                                                smaa_neighborhood_blending_frag.handle);
+            glDrawArrays(GL_TRIANGLES, 0, 3);
+            glFrontFace(GL_CW);
+        } break;
+        default:
+            UNREACHABLE();
+        }
+
+        glBindFramebuffer(GL_READ_FRAMEBUFFER, old_read_fb);
+        glBindFramebuffer(GL_DRAW_FRAMEBUFFER, old_draw_fb);
+
+        glBindTextureUnit(0, aa_texture.handle);
+    }
+    glDisablei(GL_SCISSOR_TEST, 0);
+
+    if (Settings::values.scaling_filter.GetValue() == Settings::ScalingFilter::Fsr) {
+        if (!fsr->AreBuffersInitialized()) {
+            fsr->InitBuffers();
+        }
+
+        glBindSampler(0, present_sampler.handle);
+        fsr->Draw(program_manager, layout.screen, info.scaled_width, info.scaled_height, crop);
+    } else {
+        if (fsr->AreBuffersInitialized()) {
+            fsr->ReleaseBuffers();
+        }
+    }
+
+    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:
+            return fsr->GetPresentFragmentProgram().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());
+
+    f32 left, top, right, bottom;
+    if (Settings::values.scaling_filter.GetValue() == Settings::ScalingFilter::Fsr) {
+        // FSR has already applied the crop, so we just want to render the image
+        // it has produced.
+        left = 0;
+        top = 0;
+        right = 1;
+        bottom = 1;
+    } else {
+        // Apply the precomputed crop.
+        left = crop.left;
+        top = crop.top;
+        right = crop.right;
+        bottom = crop.bottom;
+    }
+
+    // Map the coordinates to the screen.
+    const auto& screen = layout.screen;
+    const auto x = screen.left;
+    const auto y = screen.top;
+    const auto w = screen.GetWidth();
+    const auto h = screen.GetHeight();
+
+    const std::array vertices = {
+        ScreenRectVertex(x, y, left, top),
+        ScreenRectVertex(x + w, y, right, top),
+        ScreenRectVertex(x, y + h, left, bottom),
+        ScreenRectVertex(x + w, y + h, right, bottom),
+    };
+    glNamedBufferSubData(vertex_buffer.handle, 0, sizeof(vertices), std::data(vertices));
+
+    glDisable(GL_FRAMEBUFFER_SRGB);
+    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);
+    }
+
+    // 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);
+
+    glClear(GL_COLOR_BUFFER_BIT);
+    glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+
+    // TODO
+    // program_manager.RestoreGuestPipeline();
+}
+
+} // namespace OpenGL