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VideoCore: Add gaussian filtering.

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This commit is contained in:
FernandoS27
2021-10-21 01:27:54 +02:00
committed by Fernando Sahmkow
parent bf01b7993d
commit 9e065b9c7d
8 changed files with 140 additions and 2 deletions
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1
src/video_core/host_shaders/CMakeLists.txt
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@@ -19,6 +19,7 @@ set(SHADER_FILES
pitch_unswizzle.comp
present_scaleforce.frag
present_bicubic.frag
present_gaussian.frag
vulkan_blit_color_float.frag
vulkan_blit_depth_stencil.frag
vulkan_fidelityfx_fsr_easu.comp

74
src/video_core/host_shaders/present_gaussian.frag Normal file
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@@ -0,0 +1,74 @@
// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#version 460 core
#ifdef VULKAN
#define BINDING_COLOR_TEXTURE 1
#else // ^^^ Vulkan ^^^ // vvv OpenGL vvv
#define BINDING_COLOR_TEXTURE 0
#endif
layout (location = 0) in vec2 frag_tex_coord;
layout (location = 0) out vec4 color;
layout (binding = BINDING_COLOR_TEXTURE) uniform sampler2D color_texture;
const float offset[3] = float[](0.0, 1.3846153846, 3.2307692308);
const float weight[3] = float[](0.2270270270, 0.3162162162, 0.0702702703);
vec4 blurVertical(sampler2D textureSampler, vec2 coord, vec2 norm) {
vec4 result = vec4(0.0f);
for (int i=1; i<3; i++) {
result +=
texture(textureSampler, vec2(coord) + (vec2(0.0, offset[i]) * norm))
* weight[i];
result +=
texture(textureSampler, vec2(coord) - (vec2(0.0, offset[i]) * norm))
* weight[i];
}
return result;
}
vec4 blurHorizontal(sampler2D textureSampler, vec2 coord, vec2 norm) {
vec4 result = vec4(0.0f);
for (int i=1; i<3; i++) {
result +=
texture(textureSampler, vec2(coord) + (vec2(offset[i], 0.0) * norm))
* weight[i];
result +=
texture(textureSampler, vec2(coord) - (vec2(offset[i], 0.0) * norm))
* weight[i];
}
return result;
}
vec4 blurDiagonal(sampler2D textureSampler, vec2 coord, vec2 norm) {
vec4 result = vec4(0.0f);
for (int i=1; i<3; i++) {
result +=
texture(textureSampler, vec2(coord) + (vec2(offset[i], offset[i]) * norm))
* weight[i];
result +=
texture(textureSampler, vec2(coord) - (vec2(offset[i], offset[i]) * norm))
* weight[i];
}
return result;
}
void main() {
vec3 base = texture(color_texture, vec2(frag_tex_coord)).rgb * weight[0];
vec2 tex_offset = 1.0f / textureSize(color_texture, 0);
vec3 horizontal = blurHorizontal(color_texture, frag_tex_coord, tex_offset).rgb;
vec3 vertical = blurVertical(color_texture, frag_tex_coord, tex_offset).rgb;
vec3 diagonalA = blurVertical(color_texture, frag_tex_coord, tex_offset).rgb;
vec3 diagonalB = blurVertical(color_texture, frag_tex_coord, -tex_offset).rgb;
vec3 combination = mix(mix(horizontal, vertical, 0.5f), mix(diagonalA, diagonalB, 0.5f), 0.5f);
color = vec4(combination + base, 1.0f);
}

5
src/video_core/renderer_opengl/renderer_opengl.cpp
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@@ -256,6 +256,8 @@ void RendererOpenGL::InitOpenGLObjects() {
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(HostShaders::PRESENT_SCALEFORCE_FRAG, GL_FRAGMENT_SHADER);
@@ -359,6 +361,9 @@ void RendererOpenGL::DrawScreen(const Layout::FramebufferLayout& layout) {
case Settings::ScalingFilter::Bicubic:
fragment_handle = present_bicubic_fragment.handle;
break;
case Settings::ScalingFilter::Gaussian:
fragment_handle = present_gaussian_fragment.handle;
break;
case Settings::ScalingFilter::ScaleForce:
fragment_handle = present_scaleforce_fragment.handle;
break;

1
src/video_core/renderer_opengl/renderer_opengl.h
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@@ -114,6 +114,7 @@ private:
OGLProgram present_vertex;
OGLProgram present_bilinear_fragment;
OGLProgram present_bicubic_fragment;
OGLProgram present_gaussian_fragment;
OGLProgram present_scaleforce_fragment;
OGLFramebuffer screenshot_framebuffer;

49
src/video_core/renderer_vulkan/vk_blit_screen.cpp
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@@ -18,6 +18,7 @@
#include "core/memory.h"
#include "video_core/gpu.h"
#include "video_core/host_shaders/present_bicubic_frag_spv.h"
#include "video_core/host_shaders/present_gaussian_frag_spv.h"
#include "video_core/host_shaders/present_scaleforce_frag_spv.h"
#include "video_core/host_shaders/vulkan_present_frag_spv.h"
#include "video_core/host_shaders/vulkan_present_vert_spv.h"
@@ -297,6 +298,9 @@ VkSemaphore VKBlitScreen::Draw(const Tegra::FramebufferConfig& framebuffer,
case Settings::ScalingFilter::Bicubic:
cmdbuf.BindPipeline(VK_PIPELINE_BIND_POINT_GRAPHICS, *bicubic_pipeline);
break;
case Settings::ScalingFilter::Gaussian:
cmdbuf.BindPipeline(VK_PIPELINE_BIND_POINT_GRAPHICS, *gaussian_pipeline);
break;
case Settings::ScalingFilter::ScaleForce:
cmdbuf.BindPipeline(VK_PIPELINE_BIND_POINT_GRAPHICS, *scaleforce_pipeline);
break;
@@ -388,6 +392,7 @@ void VKBlitScreen::CreateShaders() {
vertex_shader = BuildShader(device, VULKAN_PRESENT_VERT_SPV);
bilinear_fragment_shader = BuildShader(device, VULKAN_PRESENT_FRAG_SPV);
bicubic_fragment_shader = BuildShader(device, PRESENT_BICUBIC_FRAG_SPV);
gaussian_fragment_shader = BuildShader(device, PRESENT_GAUSSIAN_FRAG_SPV);
scaleforce_fragment_shader = BuildShader(device, PRESENT_SCALEFORCE_FRAG_SPV);
}
@@ -574,6 +579,27 @@ void VKBlitScreen::CreateGraphicsPipeline() {
},
}};
const std::array<VkPipelineShaderStageCreateInfo, 2> gaussian_shader_stages{{
{
.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
.pNext = nullptr,
.flags = 0,
.stage = VK_SHADER_STAGE_VERTEX_BIT,
.module = *vertex_shader,
.pName = "main",
.pSpecializationInfo = nullptr,
},
{
.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
.pNext = nullptr,
.flags = 0,
.stage = VK_SHADER_STAGE_FRAGMENT_BIT,
.module = *gaussian_fragment_shader,
.pName = "main",
.pSpecializationInfo = nullptr,
},
}};
const std::array<VkPipelineShaderStageCreateInfo, 2> scaleforce_shader_stages{{
{
.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
@@ -733,6 +759,28 @@ void VKBlitScreen::CreateGraphicsPipeline() {
.basePipelineIndex = 0,
};
const VkGraphicsPipelineCreateInfo gaussian_pipeline_ci{
.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO,
.pNext = nullptr,
.flags = 0,
.stageCount = static_cast<u32>(gaussian_shader_stages.size()),
.pStages = gaussian_shader_stages.data(),
.pVertexInputState = &vertex_input_ci,
.pInputAssemblyState = &input_assembly_ci,
.pTessellationState = nullptr,
.pViewportState = &viewport_state_ci,
.pRasterizationState = &rasterization_ci,
.pMultisampleState = &multisampling_ci,
.pDepthStencilState = nullptr,
.pColorBlendState = &color_blend_ci,
.pDynamicState = &dynamic_state_ci,
.layout = *pipeline_layout,
.renderPass = *renderpass,
.subpass = 0,
.basePipelineHandle = 0,
.basePipelineIndex = 0,
};
const VkGraphicsPipelineCreateInfo scaleforce_pipeline_ci{
.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO,
.pNext = nullptr,
@@ -757,6 +805,7 @@ void VKBlitScreen::CreateGraphicsPipeline() {
bilinear_pipeline = device.GetLogical().CreateGraphicsPipeline(bilinear_pipeline_ci);
bicubic_pipeline = device.GetLogical().CreateGraphicsPipeline(bicubic_pipeline_ci);
gaussian_pipeline = device.GetLogical().CreateGraphicsPipeline(gaussian_pipeline_ci);
scaleforce_pipeline = device.GetLogical().CreateGraphicsPipeline(scaleforce_pipeline_ci);
}

2
src/video_core/renderer_vulkan/vk_blit_screen.h
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@@ -111,6 +111,7 @@ private:
vk::ShaderModule vertex_shader;
vk::ShaderModule bilinear_fragment_shader;
vk::ShaderModule bicubic_fragment_shader;
vk::ShaderModule gaussian_fragment_shader;
vk::ShaderModule scaleforce_fragment_shader;
vk::DescriptorPool descriptor_pool;
vk::DescriptorSetLayout descriptor_set_layout;
@@ -118,6 +119,7 @@ private:
vk::Pipeline nearest_neightbor_pipeline;
vk::Pipeline bilinear_pipeline;
vk::Pipeline bicubic_pipeline;
vk::Pipeline gaussian_pipeline;
vk::Pipeline scaleforce_pipeline;
vk::RenderPass renderpass;
std::vector<vk::Framebuffer> framebuffers;