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76f98008e8
Performing a full-screen RenderPass resolve is too expensive. Because most composite cases only require a small area to be rendered off-screen. To improve performance, use the bounds of the Geometry for off-screen rendering whenever possible
132 lines
4.6 KiB
C++
132 lines
4.6 KiB
C++
/*
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* Copyright (c) 2023 - 2024 the ThorVG project. All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "tvgGlRenderTarget.h"
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GlRenderTarget::GlRenderTarget(uint32_t width, uint32_t height): mWidth(width), mHeight(height) {}
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GlRenderTarget::~GlRenderTarget()
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{
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if (mFbo == 0) return;
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GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, 0));
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GL_CHECK(glDeleteFramebuffers(1, &mFbo));
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if (mColorTex != 0) {
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GL_CHECK(glDeleteTextures(1, &mColorTex));
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}
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if (mDepthStencilBuffer != 0) {
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GL_CHECK(glDeleteRenderbuffers(1, &mDepthStencilBuffer));
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}
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}
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void GlRenderTarget::init(GLint resolveId)
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{
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if (mFbo != 0 || mWidth == 0 || mHeight == 0) return;
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GL_CHECK(glGenFramebuffers(1, &mFbo));
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GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, mFbo));
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GL_CHECK(glGenRenderbuffers(1, &mColorBuffer));
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GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, mColorBuffer));
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GL_CHECK(glRenderbufferStorageMultisample(GL_RENDERBUFFER, 4, GL_RGBA8, mWidth, mHeight));
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GL_CHECK(glGenRenderbuffers(1, &mDepthStencilBuffer));
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GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, mDepthStencilBuffer));
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GL_CHECK(glRenderbufferStorageMultisample(GL_RENDERBUFFER, 4, GL_DEPTH24_STENCIL8, mWidth, mHeight));
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GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, 0));
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GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, mColorBuffer));
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GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, mDepthStencilBuffer));
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// resolve target
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GL_CHECK(glGenTextures(1, &mColorTex));
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GL_CHECK(glBindTexture(GL_TEXTURE_2D, mColorTex));
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GL_CHECK(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, mWidth, mHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr));
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GL_CHECK(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
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GL_CHECK(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
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GL_CHECK(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
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GL_CHECK(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
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GL_CHECK(glBindTexture(GL_TEXTURE_2D, 0));
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GL_CHECK(glGenFramebuffers(1, &mResolveFbo));
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GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, mResolveFbo));
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GL_CHECK(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mColorTex, 0));
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GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, resolveId));
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}
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GlRenderTargetPool::GlRenderTargetPool(uint32_t maxWidth, uint32_t maxHeight): mMaxWidth(maxWidth), mMaxHeight(maxHeight), mPool() {}
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GlRenderTargetPool::~GlRenderTargetPool()
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{
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for (uint32_t i = 0; i < mPool.count; i++) {
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delete mPool[i];
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}
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}
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uint32_t alignPow2(uint32_t value)
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{
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uint32_t ret = 1;
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while (ret < value) {
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ret <<= 1;
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}
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return ret;
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}
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GlRenderTarget* GlRenderTargetPool::getRenderTarget(const RenderRegion& vp, GLuint resolveId)
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{
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uint32_t width = static_cast<uint32_t>(vp.w);
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uint32_t height = static_cast<uint32_t>(vp.h);
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// pow2 align width and height
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if (width >= mMaxWidth) width = mMaxWidth;
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else width = alignPow2(width);
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if (width >= mMaxWidth) width = mMaxWidth;
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if (height >= mMaxHeight) height = mMaxHeight;
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else height = alignPow2(height);
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if (height >= mMaxHeight) height = mMaxHeight;
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for (uint32_t i = 0; i < mPool.count; i++) {
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auto rt = mPool[i];
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if (rt->getWidth() == width && rt->getHeight() == height) {
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rt->setViewport(vp);
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return rt;
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}
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}
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auto rt = new GlRenderTarget(width, height);
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rt->init(resolveId);
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rt->setViewport(vp);
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mPool.push(rt);
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return rt;
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}
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