119 lines
3.3 KiB
C++
119 lines
3.3 KiB
C++
/*
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Copyright 2021 flyinghead
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This file is part of Flycast.
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Flycast is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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Flycast is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Flycast. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "opengl_driver.h"
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#include "imgui_impl_opengl3.h"
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#include "wsi/gl_context.h"
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#include "glcache.h"
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#include "gles.h"
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#include "hw/pvr/Renderer_if.h"
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#ifndef GL_CLAMP_TO_BORDER
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#define GL_CLAMP_TO_BORDER 0x812D
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#endif
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#ifndef GL_TEXTURE_BORDER_COLOR
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#define GL_TEXTURE_BORDER_COLOR 0x1004
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#endif
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OpenGLDriver::OpenGLDriver()
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{
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ImGui_ImplOpenGL3_Init();
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}
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OpenGLDriver::~OpenGLDriver()
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{
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std::vector<GLuint> texIds;
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texIds.reserve(textures.size());
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for (const auto& it : textures)
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texIds.push_back((GLuint)(uintptr_t)it.second);
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if (!texIds.empty())
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glcache.DeleteTextures(texIds.size(), &texIds[0]);
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ImGui_ImplOpenGL3_Shutdown();
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}
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void OpenGLDriver::newFrame()
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{
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ImGui_ImplOpenGL3_NewFrame();
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}
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void OpenGLDriver::renderDrawData(ImDrawData* drawData, bool gui_open)
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{
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if (gui_open)
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{
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#ifndef TARGET_IPHONE
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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#endif
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glcache.Disable(GL_SCISSOR_TEST);
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glcache.ClearColor(0, 0, 0, 0);
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glClear(GL_COLOR_BUFFER_BIT);
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if (renderer != nullptr)
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renderer->RenderLastFrame();
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}
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ImGui_ImplOpenGL3_RenderDrawData(drawData);
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if (gui_open)
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frameRendered = true;
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}
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void OpenGLDriver::present()
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{
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if (frameRendered)
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theGLContext.swap();
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frameRendered = false;
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}
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ImTextureID OpenGLDriver::updateTexture(const std::string& name, const u8 *data, int width, int height, bool nearestSampling)
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{
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ImTextureID oldId = getTexture(name);
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if (oldId != ImTextureID())
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glcache.DeleteTextures(1, (GLuint *)&oldId);
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GLuint texId = glcache.GenTexture();
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glcache.BindTexture(GL_TEXTURE_2D, texId);
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if (nearestSampling) {
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glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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}
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else {
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glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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}
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if (gl.border_clamp_supported)
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{
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float color[] = { 0.0f, 0.0f, 0.0f, 0.0f };
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glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, color);
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glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
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glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
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}
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else
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{
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glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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}
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
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return textures[name] = (ImTextureID)(u64)texId;
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}
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void OpenGLDriver::deleteTexture(const std::string& name)
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{
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auto it = textures.find(name);
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if (it != textures.end()) {
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glcache.DeleteTextures(1, (GLuint *)&it->second);
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textures.erase(it);
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}
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}
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