diff options
Diffstat (limited to 'src/video_core/renderer_opengl/present/fsr.cpp')
-rw-r--r-- | src/video_core/renderer_opengl/present/fsr.cpp | 98 |
1 files changed, 98 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..b764aadae --- /dev/null +++ b/src/video_core/renderer_opengl/present/fsr.cpp @@ -0,0 +1,98 @@ +// 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/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/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/renderer_opengl/gl_shader_manager.h" +#include "video_core/renderer_opengl/gl_shader_util.h" +#include "video_core/renderer_opengl/present/fsr.h" +#include "video_core/renderer_opengl/present/util.h" + +namespace OpenGL { +using namespace FSR; + +using FsrConstants = std::array<u32, 4 * 4>; + +FSR::FSR(u32 output_width_, u32 output_height_) : width(output_width_), height(output_height_) { + std::string fsr_source{HostShaders::OPENGL_FIDELITYFX_FSR_FRAG}; + ReplaceInclude(fsr_source, "ffx_a.h", HostShaders::FFX_A_H); + ReplaceInclude(fsr_source, "ffx_fsr1.h", HostShaders::FFX_FSR1_H); + + std::string fsr_easu_source{HostShaders::OPENGL_FIDELITYFX_FSR_EASU_FRAG}; + std::string fsr_rcas_source{HostShaders::OPENGL_FIDELITYFX_FSR_RCAS_FRAG}; + ReplaceInclude(fsr_easu_source, "opengl_fidelityfx_fsr.frag", fsr_source); + ReplaceInclude(fsr_rcas_source, "opengl_fidelityfx_fsr.frag", fsr_source); + + vert = CreateProgram(HostShaders::FULL_SCREEN_TRIANGLE_VERT, GL_VERTEX_SHADER); + easu_frag = CreateProgram(fsr_easu_source, GL_FRAGMENT_SHADER); + rcas_frag = CreateProgram(fsr_rcas_source, GL_FRAGMENT_SHADER); + + glProgramUniform2f(vert.handle, 0, 1.0f, -1.0f); + glProgramUniform2f(vert.handle, 1, 0.0f, 1.0f); + + sampler = CreateBilinearSampler(); + framebuffer.Create(); + + easu_tex.Create(GL_TEXTURE_2D); + glTextureStorage2D(easu_tex.handle, 1, GL_RGBA16F, width, height); + + rcas_tex.Create(GL_TEXTURE_2D); + glTextureStorage2D(rcas_tex.handle, 1, GL_RGBA16F, width, height); +} + +FSR::~FSR() = default; + +GLuint FSR::Draw(ProgramManager& program_manager, GLuint texture, u32 input_image_width, + u32 input_image_height, const Common::Rectangle<f32>& crop_rect) { + 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>(width); + const f32 output_height = static_cast<f32>(height); + 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 easu_con{}; + FsrConstants rcas_con{}; + + FsrEasuConOffset(easu_con.data() + 0, easu_con.data() + 4, easu_con.data() + 8, + easu_con.data() + 12, viewport_width, viewport_height, input_width, + input_height, output_width, output_height, viewport_x, viewport_y); + + const float sharpening = + static_cast<float>(Settings::values.fsr_sharpening_slider.GetValue()) / 100.0f; + + FsrRcasCon(rcas_con.data(), sharpening); + + glProgramUniform4uiv(easu_frag.handle, 0, sizeof(easu_con), easu_con.data()); + glProgramUniform4uiv(rcas_frag.handle, 0, sizeof(rcas_con), rcas_con.data()); + + glFrontFace(GL_CW); + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer.handle); + glNamedFramebufferTexture(framebuffer.handle, GL_COLOR_ATTACHMENT0, easu_tex.handle, 0); + glViewportIndexedf(0, 0.0f, 0.0f, output_width, output_height); + program_manager.BindPresentPrograms(vert.handle, easu_frag.handle); + glBindTextureUnit(0, texture); + glBindSampler(0, sampler.handle); + glDrawArrays(GL_TRIANGLES, 0, 3); + + glNamedFramebufferTexture(framebuffer.handle, GL_COLOR_ATTACHMENT0, rcas_tex.handle, 0); + program_manager.BindPresentPrograms(vert.handle, rcas_frag.handle); + glBindTextureUnit(0, easu_tex.handle); + glDrawArrays(GL_TRIANGLES, 0, 3); + + return rcas_tex.handle; +} + +bool FSR::NeedsRecreation(const Common::Rectangle<u32>& screen) { + return screen.GetWidth() != width || screen.GetHeight() != height; +} + +} // namespace OpenGL |