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@ -19,7 +19,7 @@ using namespace FSR;
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using FsrConstants = std::array<u32, 4 * 4>;
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FSR::FSR() {
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FSR::FSR(u32 output_width_, u32 output_height_) : width(output_width_), height(output_height_) {
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std::string fsr_source{HostShaders::OPENGL_FIDELITYFX_FSR_FRAG};
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ReplaceInclude(fsr_source, "ffx_a.h", HostShaders::FFX_A_H);
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ReplaceInclude(fsr_source, "ffx_fsr1.h", HostShaders::FFX_FSR1_H);
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@ -29,94 +29,70 @@ FSR::FSR() {
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ReplaceInclude(fsr_easu_source, "opengl_fidelityfx_fsr.frag", fsr_source);
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ReplaceInclude(fsr_rcas_source, "opengl_fidelityfx_fsr.frag", fsr_source);
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fsr_vertex = CreateProgram(HostShaders::FULL_SCREEN_TRIANGLE_VERT, GL_VERTEX_SHADER);
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fsr_easu_frag = CreateProgram(fsr_easu_source, GL_FRAGMENT_SHADER);
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fsr_rcas_frag = CreateProgram(fsr_rcas_source, GL_FRAGMENT_SHADER);
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vert = CreateProgram(HostShaders::FULL_SCREEN_TRIANGLE_VERT, GL_VERTEX_SHADER);
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easu_frag = CreateProgram(fsr_easu_source, GL_FRAGMENT_SHADER);
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rcas_frag = CreateProgram(fsr_rcas_source, GL_FRAGMENT_SHADER);
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glProgramUniform2f(fsr_vertex.handle, 0, 1.0f, 1.0f);
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glProgramUniform2f(fsr_vertex.handle, 1, 0.0f, 0.0f);
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glProgramUniform2f(vert.handle, 0, 1.0f, -1.0f);
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glProgramUniform2f(vert.handle, 1, 0.0f, 1.0f);
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sampler = CreateBilinearSampler();
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framebuffer.Create();
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easu_tex.Create(GL_TEXTURE_2D);
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glTextureStorage2D(easu_tex.handle, 1, GL_RGBA16F, width, height);
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rcas_tex.Create(GL_TEXTURE_2D);
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glTextureStorage2D(rcas_tex.handle, 1, GL_RGBA16F, width, height);
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}
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FSR::~FSR() = default;
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void FSR::Draw(ProgramManager& program_manager, const Common::Rectangle<u32>& screen,
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u32 input_image_width, u32 input_image_height,
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const Common::Rectangle<f32>& crop_rect) {
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const auto output_image_width = screen.GetWidth();
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const auto output_image_height = screen.GetHeight();
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if (fsr_intermediate_tex.handle) {
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GLint fsr_tex_width, fsr_tex_height;
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glGetTextureLevelParameteriv(fsr_intermediate_tex.handle, 0, GL_TEXTURE_WIDTH,
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&fsr_tex_width);
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glGetTextureLevelParameteriv(fsr_intermediate_tex.handle, 0, GL_TEXTURE_HEIGHT,
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&fsr_tex_height);
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if (static_cast<u32>(fsr_tex_width) != output_image_width ||
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static_cast<u32>(fsr_tex_height) != output_image_height) {
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fsr_intermediate_tex.Release();
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}
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}
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if (!fsr_intermediate_tex.handle) {
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fsr_intermediate_tex.Create(GL_TEXTURE_2D);
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glTextureStorage2D(fsr_intermediate_tex.handle, 1, GL_RGB16F, output_image_width,
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output_image_height);
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glNamedFramebufferTexture(fsr_framebuffer.handle, GL_COLOR_ATTACHMENT0,
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fsr_intermediate_tex.handle, 0);
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}
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GLint old_draw_fb;
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glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &old_draw_fb);
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glFrontFace(GL_CW);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fsr_framebuffer.handle);
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glViewportIndexedf(0, 0.0f, 0.0f, static_cast<GLfloat>(output_image_width),
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static_cast<GLfloat>(output_image_height));
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GLuint FSR::Draw(ProgramManager& program_manager, GLuint texture, u32 input_image_width,
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u32 input_image_height, const Common::Rectangle<f32>& crop_rect) {
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const f32 input_width = static_cast<f32>(input_image_width);
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const f32 input_height = static_cast<f32>(input_image_height);
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const f32 output_width = static_cast<f32>(screen.GetWidth());
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const f32 output_height = static_cast<f32>(screen.GetHeight());
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const f32 output_width = static_cast<f32>(width);
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const f32 output_height = static_cast<f32>(height);
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const f32 viewport_width = (crop_rect.right - crop_rect.left) * input_width;
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const f32 viewport_x = crop_rect.left * input_width;
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const f32 viewport_height = (crop_rect.bottom - crop_rect.top) * input_height;
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const f32 viewport_y = crop_rect.top * input_height;
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FsrConstants constants;
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FsrEasuConOffset(constants.data() + 0, constants.data() + 4, constants.data() + 8,
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constants.data() + 12, viewport_width, viewport_height, input_width,
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FsrConstants easu_con{};
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FsrConstants rcas_con{};
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FsrEasuConOffset(easu_con.data() + 0, easu_con.data() + 4, easu_con.data() + 8,
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easu_con.data() + 12, viewport_width, viewport_height, input_width,
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input_height, output_width, output_height, viewport_x, viewport_y);
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glProgramUniform4uiv(fsr_easu_frag.handle, 0, sizeof(constants), std::data(constants));
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program_manager.BindPresentPrograms(fsr_vertex.handle, fsr_easu_frag.handle);
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glDrawArrays(GL_TRIANGLES, 0, 3);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, old_draw_fb);
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glBindTextureUnit(0, fsr_intermediate_tex.handle);
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const float sharpening =
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static_cast<float>(Settings::values.fsr_sharpening_slider.GetValue()) / 100.0f;
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FsrRcasCon(constants.data(), sharpening);
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glProgramUniform4uiv(fsr_rcas_frag.handle, 0, sizeof(constants), std::data(constants));
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FsrRcasCon(rcas_con.data(), sharpening);
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glProgramUniform4uiv(easu_frag.handle, 0, sizeof(easu_con), easu_con.data());
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glProgramUniform4uiv(rcas_frag.handle, 0, sizeof(rcas_con), rcas_con.data());
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glFrontFace(GL_CW);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer.handle);
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glNamedFramebufferTexture(framebuffer.handle, GL_COLOR_ATTACHMENT0, easu_tex.handle, 0);
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glViewportIndexedf(0, 0.0f, 0.0f, output_width, output_height);
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program_manager.BindPresentPrograms(vert.handle, easu_frag.handle);
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glBindTextureUnit(0, texture);
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glBindSampler(0, sampler.handle);
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glDrawArrays(GL_TRIANGLES, 0, 3);
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glNamedFramebufferTexture(framebuffer.handle, GL_COLOR_ATTACHMENT0, rcas_tex.handle, 0);
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program_manager.BindPresentPrograms(vert.handle, rcas_frag.handle);
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glBindTextureUnit(0, easu_tex.handle);
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glDrawArrays(GL_TRIANGLES, 0, 3);
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return rcas_tex.handle;
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}
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void FSR::InitBuffers() {
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fsr_framebuffer.Create();
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}
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void FSR::ReleaseBuffers() {
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fsr_framebuffer.Release();
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fsr_intermediate_tex.Release();
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}
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const OGLProgram& FSR::GetPresentFragmentProgram() const noexcept {
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return fsr_rcas_frag;
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}
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bool FSR::AreBuffersInitialized() const noexcept {
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return fsr_framebuffer.handle;
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bool FSR::NeedsRecreation(const Common::Rectangle<u32>& screen) {
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return screen.GetWidth() != width || screen.GetHeight() != height;
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}
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} // namespace OpenGL
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