diff options
Diffstat (limited to 'src/video_core/renderer_opengl/present/fsr.cpp')
-rw-r--r-- | src/video_core/renderer_opengl/present/fsr.cpp | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/src/video_core/renderer_opengl/present/fsr.cpp b/src/video_core/renderer_opengl/present/fsr.cpp new file mode 100644 index 000000000..e5945b80b --- /dev/null +++ b/src/video_core/renderer_opengl/present/fsr.cpp @@ -0,0 +1,106 @@ +// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#include "common/settings.h" +#include "video_core/fsr.h" +#include "video_core/renderer_opengl/gl_shader_manager.h" +#include "video_core/renderer_opengl/gl_shader_util.h" +#include "video_core/renderer_opengl/present/fsr.h" + +namespace OpenGL { +using namespace FSR; + +using FsrConstants = std::array<u32, 4 * 4>; + +FSR::FSR(std::string_view fsr_vertex_source, std::string_view fsr_easu_source, + std::string_view fsr_rcas_source) + : fsr_vertex{CreateProgram(fsr_vertex_source, GL_VERTEX_SHADER)}, + fsr_easu_frag{CreateProgram(fsr_easu_source, GL_FRAGMENT_SHADER)}, + fsr_rcas_frag{CreateProgram(fsr_rcas_source, GL_FRAGMENT_SHADER)} { + glProgramUniform2f(fsr_vertex.handle, 0, 1.0f, 1.0f); + glProgramUniform2f(fsr_vertex.handle, 1, 0.0f, 0.0f); +} + +FSR::~FSR() = default; + +void FSR::Draw(ProgramManager& program_manager, const Common::Rectangle<u32>& screen, + u32 input_image_width, u32 input_image_height, + const Common::Rectangle<f32>& crop_rect) { + + const auto output_image_width = screen.GetWidth(); + const auto output_image_height = screen.GetHeight(); + + if (fsr_intermediate_tex.handle) { + GLint fsr_tex_width, fsr_tex_height; + glGetTextureLevelParameteriv(fsr_intermediate_tex.handle, 0, GL_TEXTURE_WIDTH, + &fsr_tex_width); + glGetTextureLevelParameteriv(fsr_intermediate_tex.handle, 0, GL_TEXTURE_HEIGHT, + &fsr_tex_height); + if (static_cast<u32>(fsr_tex_width) != output_image_width || + static_cast<u32>(fsr_tex_height) != output_image_height) { + fsr_intermediate_tex.Release(); + } + } + if (!fsr_intermediate_tex.handle) { + fsr_intermediate_tex.Create(GL_TEXTURE_2D); + glTextureStorage2D(fsr_intermediate_tex.handle, 1, GL_RGB16F, output_image_width, + output_image_height); + glNamedFramebufferTexture(fsr_framebuffer.handle, GL_COLOR_ATTACHMENT0, + fsr_intermediate_tex.handle, 0); + } + + GLint old_draw_fb; + glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &old_draw_fb); + + glFrontFace(GL_CW); + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fsr_framebuffer.handle); + glViewportIndexedf(0, 0.0f, 0.0f, static_cast<GLfloat>(output_image_width), + static_cast<GLfloat>(output_image_height)); + + const f32 input_width = static_cast<f32>(input_image_width); + const f32 input_height = static_cast<f32>(input_image_height); + const f32 output_width = static_cast<f32>(screen.GetWidth()); + const f32 output_height = static_cast<f32>(screen.GetHeight()); + const f32 viewport_width = (crop_rect.right - crop_rect.left) * input_width; + const f32 viewport_x = crop_rect.left * input_width; + const f32 viewport_height = (crop_rect.bottom - crop_rect.top) * input_height; + const f32 viewport_y = crop_rect.top * input_height; + + FsrConstants constants; + FsrEasuConOffset(constants.data() + 0, constants.data() + 4, constants.data() + 8, + constants.data() + 12, viewport_width, viewport_height, input_width, + input_height, output_width, output_height, viewport_x, viewport_y); + + glProgramUniform4uiv(fsr_easu_frag.handle, 0, sizeof(constants), std::data(constants)); + + program_manager.BindPresentPrograms(fsr_vertex.handle, fsr_easu_frag.handle); + glDrawArrays(GL_TRIANGLES, 0, 3); + + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, old_draw_fb); + glBindTextureUnit(0, fsr_intermediate_tex.handle); + + const float sharpening = + static_cast<float>(Settings::values.fsr_sharpening_slider.GetValue()) / 100.0f; + + FsrRcasCon(constants.data(), sharpening); + glProgramUniform4uiv(fsr_rcas_frag.handle, 0, sizeof(constants), std::data(constants)); +} + +void FSR::InitBuffers() { + fsr_framebuffer.Create(); +} + +void FSR::ReleaseBuffers() { + fsr_framebuffer.Release(); + fsr_intermediate_tex.Release(); +} + +const OGLProgram& FSR::GetPresentFragmentProgram() const noexcept { + return fsr_rcas_frag; +} + +bool FSR::AreBuffersInitialized() const noexcept { + return fsr_framebuffer.handle; +} + +} // namespace OpenGL |