mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-11-22 05:27:20 +00:00
[client] egl: add new downscale filter
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parent
b3173bdddc
commit
117e88c240
@ -63,6 +63,7 @@ build_shaders(
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shader/ffx_cas.frag
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shader/ffx_fsr1_easu.frag
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shader/ffx_fsr1_rcas.frag
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shader/downscale.frag
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)
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make_defines(
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@ -91,6 +92,7 @@ add_library(renderer_EGL STATIC
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ffx.c
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filter_ffx_cas.c
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filter_ffx_fsr1.c
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filter_downscale.c
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${EGL_SHADER_OBJS}
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"${CMAKE_CURRENT_BINARY_DIR}/shader/desktop_rgb.def.h"
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${PROJECT_TOP}/repos/cimgui/imgui/backends/imgui_impl_opengl3.cpp
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@ -171,8 +171,9 @@ bool egl_desktopInit(EGL * egl, EGL_Desktop ** desktop_, EGLDisplay * display,
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return false;
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}
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egl_postProcessAdd(desktop->pp, &egl_filterFFXCASOps );
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egl_postProcessAdd(desktop->pp, &egl_filterFFXFSR1Ops);
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egl_postProcessAdd(desktop->pp, &egl_filterDownscaleOps);
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egl_postProcessAdd(desktop->pp, &egl_filterFFXCASOps );
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egl_postProcessAdd(desktop->pp, &egl_filterFFXFSR1Ops );
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return true;
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}
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263
client/renderers/EGL/filter_downscale.c
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263
client/renderers/EGL/filter_downscale.c
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@ -0,0 +1,263 @@
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/**
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* Looking Glass
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* Copyright © 2017-2021 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "filter.h"
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#include "framebuffer.h"
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#include <math.h>
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#include "common/debug.h"
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#include "common/option.h"
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#include "cimgui.h"
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#include "basic.vert.h"
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#include "downscale.frag.h"
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typedef struct EGL_FilterDownscale
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{
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EGL_Filter base;
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EGL_Shader * shader;
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bool enable;
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EGL_Uniform uniform;
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enum EGL_PixelFormat pixFmt;
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unsigned int width, height;
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float pixelSize;
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float vOffset, hOffset;
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bool prepared;
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EGL_Framebuffer * fb;
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GLuint sampler;
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}
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EGL_FilterDownscale;
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static void egl_filterDownscaleEarlyInit(void)
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{
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// doesn't really make sense to have any options for this filter
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// as it's per title. We need presets to make this nicer to use.
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static struct Option options[] =
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{
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{ 0 }
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};
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option_register(options);
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}
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static bool egl_filterDownscaleInit(EGL_Filter ** filter)
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{
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EGL_FilterDownscale * this = calloc(1, sizeof(*this));
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if (!this)
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{
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DEBUG_ERROR("Failed to allocate ram");
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return false;
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}
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if (!egl_shaderInit(&this->shader))
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{
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DEBUG_ERROR("Failed to initialize the shader");
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goto error_this;
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}
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if (!egl_shaderCompile(this->shader,
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b_shader_basic_vert , b_shader_basic_vert_size,
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b_shader_downscale_frag, b_shader_downscale_frag_size)
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)
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{
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DEBUG_ERROR("Failed to compile the shader");
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goto error_shader;
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}
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this->uniform.type = EGL_UNIFORM_TYPE_3F;
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this->uniform.location =
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egl_shaderGetUniform(this->shader, "uConfig");
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if (!egl_framebufferInit(&this->fb))
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{
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DEBUG_ERROR("Failed to initialize the framebuffer");
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goto error_shader;
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}
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glGenSamplers(1, &this->sampler);
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glSamplerParameteri(this->sampler, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glSamplerParameteri(this->sampler, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glSamplerParameteri(this->sampler, GL_TEXTURE_WRAP_S , GL_CLAMP_TO_EDGE);
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glSamplerParameteri(this->sampler, GL_TEXTURE_WRAP_T , GL_CLAMP_TO_EDGE);
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this->enable = false;
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this->pixelSize = 2.0f;
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this->vOffset = 0.0f;
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this->hOffset = 0.0f;
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*filter = &this->base;
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return true;
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error_shader:
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egl_shaderFree(&this->shader);
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error_this:
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free(this);
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return false;
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}
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static void egl_filterDownscaleFree(EGL_Filter * filter)
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{
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EGL_FilterDownscale * this = UPCAST(EGL_FilterDownscale, filter);
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egl_shaderFree(&this->shader);
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egl_framebufferFree(&this->fb);
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glDeleteSamplers(1, &this->sampler);
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free(this);
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}
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static bool egl_filterDownscaleImguiConfig(EGL_Filter * filter)
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{
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EGL_FilterDownscale * this = UPCAST(EGL_FilterDownscale, filter);
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bool redraw = false;
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bool enable = this->enable;
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igCheckbox("Enable", &enable);
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if (enable != this->enable)
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{
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this->enable = enable;
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redraw = true;
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}
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int majorPixelSize = floor(this->pixelSize);
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int minorPixelSize = (this->pixelSize - majorPixelSize) * 10.0f;
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igSliderInt("Major Pixel Size", &majorPixelSize, 1, 10, NULL, 0);
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igSliderInt("Minor Pixel Size", &minorPixelSize, 0, 9, NULL, 0);
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float pixelSize = (float)majorPixelSize + (float)minorPixelSize / 10.0f;
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igText("Pixel Size: %.2f", pixelSize);
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igText("Resolution: %dx%d", this->width, this->height);
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if (pixelSize != this->pixelSize)
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{
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this->pixelSize = pixelSize;
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redraw = true;
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}
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float vOffset = this->vOffset;
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igSliderFloat("V-Offset", &vOffset, -2, 2, NULL, 0);
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if (vOffset != this->vOffset)
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{
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this->vOffset = vOffset;
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redraw = true;
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}
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float hOffset = this->hOffset;
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igSliderFloat("H-Offset", &hOffset, -2, 2, NULL, 0);
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if (hOffset != this->hOffset)
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{
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this->hOffset = hOffset;
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redraw = true;
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}
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if (redraw)
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this->prepared = false;
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return redraw;
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}
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static bool egl_filterDownscaleSetup(EGL_Filter * filter,
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enum EGL_PixelFormat pixFmt, unsigned int width, unsigned int height)
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{
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EGL_FilterDownscale * this = UPCAST(EGL_FilterDownscale, filter);
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width = (float)width / this->pixelSize;
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height = (float)height / this->pixelSize;
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if (this->prepared &&
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pixFmt == this->pixFmt &&
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this->width == width &&
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this->height == height)
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return this->pixelSize > 1.0f;
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if (!egl_framebufferSetup(this->fb, pixFmt, width, height))
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return false;
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this->pixFmt = pixFmt;
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this->width = width;
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this->height = height;
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this->prepared = false;
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return this->pixelSize > 1.0f;
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}
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static void egl_filterDownscaleGetOutputRes(EGL_Filter * filter,
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unsigned int *width, unsigned int *height)
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{
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EGL_FilterDownscale * this = UPCAST(EGL_FilterDownscale, filter);
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*width = this->width;
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*height = this->height;
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}
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static bool egl_filterDownscalePrepare(EGL_Filter * filter)
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{
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EGL_FilterDownscale * this = UPCAST(EGL_FilterDownscale, filter);
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if (!this->enable)
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return false;
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if (this->prepared)
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return true;
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this->uniform.f[0] = this->pixelSize;
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this->uniform.f[1] = this->vOffset;
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this->uniform.f[2] = this->hOffset;
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egl_shaderSetUniforms(this->shader, &this->uniform, 1);
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this->prepared = true;
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return true;
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}
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static GLuint egl_filterDownscaleRun(EGL_Filter * filter, EGL_Model * model,
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GLuint texture)
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{
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EGL_FilterDownscale * this = UPCAST(EGL_FilterDownscale, filter);
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egl_framebufferBind(this->fb);
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, texture);
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glGenerateMipmap(GL_TEXTURE_2D);
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glBindSampler(0, this->sampler);
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egl_shaderUse(this->shader);
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egl_modelRender(model);
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return egl_framebufferGetTexture(this->fb);
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}
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EGL_FilterOps egl_filterDownscaleOps =
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{
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.name = "Downscaler",
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.type = EGL_FILTER_TYPE_DOWNSCALE,
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.earlyInit = egl_filterDownscaleEarlyInit,
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.init = egl_filterDownscaleInit,
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.free = egl_filterDownscaleFree,
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.imguiConfig = egl_filterDownscaleImguiConfig,
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.setup = egl_filterDownscaleSetup,
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.getOutputRes = egl_filterDownscaleGetOutputRes,
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.prepare = egl_filterDownscalePrepare,
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.run = egl_filterDownscaleRun
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};
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@ -20,5 +20,6 @@
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#pragma once
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extern EGL_FilterOps egl_filterDownscaleOps;
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extern EGL_FilterOps egl_filterFFXCASOps;
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extern EGL_FilterOps egl_filterFFXFSR1Ops;
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@ -32,6 +32,7 @@
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static const EGL_FilterOps * EGL_Filters[] =
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{
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&egl_filterDownscaleOps,
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&egl_filterFFXFSR1Ops,
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&egl_filterFFXCASOps
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};
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26
client/renderers/EGL/shader/downscale.frag
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26
client/renderers/EGL/shader/downscale.frag
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#version 300 es
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precision mediump float;
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in vec2 fragCoord;
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out vec4 fragColor;
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uniform sampler2D texture;
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uniform vec3 uConfig;
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void main()
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{
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float pixelSize = uConfig.x;
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float vOffset = uConfig.y;
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float hOffset = uConfig.z;
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vec2 inRes = vec2(textureSize(texture, 0));
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ivec2 point = ivec2(
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(floor((fragCoord * inRes) / pixelSize) * pixelSize) +
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pixelSize / 2.0f
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);
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point.x += int(pixelSize * hOffset);
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point.y += int(pixelSize * vOffset);
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fragColor = texelFetch(texture, point, 0);
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}
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