💿🐜 Antkeeper source code
https://antkeeper.com
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142 lines
4.0 KiB
142 lines
4.0 KiB
/*
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* Copyright (C) 2017-2019 Christopher J. Howard
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*
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* This file is part of Antkeeper Source Code.
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*
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* Antkeeper Source Code 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 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper Source Code 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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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper Source Code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "final-render-pass.hpp"
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#include "resources/resource-manager.hpp"
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FinalRenderPass::FinalRenderPass(ResourceManager* resourceManager):
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resourceManager(resourceManager),
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shader(nullptr)
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{}
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bool FinalRenderPass::load(const RenderContext* renderContext)
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{
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const float quadVertexData[] =
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{
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-1.0f, 1.0f, 0.0f,
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-1.0f, -1.0f, 0.0f,
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1.0f, -1.0f, 0.0f,
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1.0f, 1.0f, 0.0f
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};
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const std::uint32_t quadIndexData[] =
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{
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0, 1, 3,
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3, 1, 2
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};
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quadVertexCount = 4;
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quadIndexCount = 6;
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// Create quad geometry
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glGenVertexArrays(1, &quadVAO);
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glBindVertexArray(quadVAO);
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glGenBuffers(1, &quadVBO);
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glBindBuffer(GL_ARRAY_BUFFER, quadVBO);
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glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 3 * quadVertexCount, quadVertexData, GL_STATIC_DRAW);
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glEnableVertexAttribArray(EMERGENT_VERTEX_POSITION);
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glVertexAttribPointer(EMERGENT_VERTEX_POSITION, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (char*)0 + 0*sizeof(float));
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glGenBuffers(1, &quadIBO);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, quadIBO);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(std::uint32_t) * quadIndexCount, quadIndexData, GL_STATIC_DRAW);
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// Load shader
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shader = resourceManager->load<Shader>("final.glsl");
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// Generate shader permutation
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if (!shader->generatePermutation(0))
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{
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std::cerr << std::string("FinalRenderPass: failed to generate shader permutation.") << std::endl;
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return false;
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}
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// Connect shader parameters
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silhouetteTextureParam.connect(shader->getInput("silhouetteTexture"));
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return true;
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}
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void FinalRenderPass::unload()
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{
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// Free quad geometry
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glDeleteBuffers(1, &quadIBO);
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glDeleteBuffers(1, &quadVBO);
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glDeleteVertexArrays(1, &quadVAO);
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silhouetteTextureParam.disconnect();
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shader->deleteAllPermutations();
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}
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void FinalRenderPass::render(RenderContext* renderContext)
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{
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const Camera& camera = *(renderContext->camera);
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// Determine scissor box coordinates using AABBs projected onto screen coordinates
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for (const RenderOperation& operation: *renderContext->queue->getOperations())
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{
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// Only use operations with the outline material.
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if (operation.material != nullptr)
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{
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if (operation.material->getFlags() & 256)
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{
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}
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}
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}
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// Bind framebuffer and setup viewport
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glBindFramebuffer(GL_FRAMEBUFFER, renderTarget->framebuffer);
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glViewport(0, 0, renderTarget->width, renderTarget->height);
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//glScissor(0,0,renderTarget->width * 0.5f,renderTarget->height);
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//glEnable(GL_SCISSOR_TEST);
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// Disable depth testing and writing
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glDisable(GL_DEPTH_TEST);
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glDepthMask(GL_FALSE);
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// Enable backface culling
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glEnable(GL_CULL_FACE);
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glCullFace(GL_BACK);
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// Disable alpha blending
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glDisable(GL_BLEND);
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// Bind shader
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shader->activate(0);
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// Upload shader parameters
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silhouetteTextureParam.setValue(&silhouetteTexture);
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silhouetteTextureParam.upload();
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// Draw quad
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glBindVertexArray(quadVAO);
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glDrawElementsBaseVertex(GL_TRIANGLES, quadIndexCount, GL_UNSIGNED_INT, (void*)0, 0);
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//glDisable(GL_SCISSOR_TEST);
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}
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void FinalRenderPass::setSilhouetteRenderTarget(const RenderTarget* renderTarget)
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{
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silhouetteRenderTarget = renderTarget;
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silhouetteTexture.setWidth(renderTarget->width);
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silhouetteTexture.setHeight(renderTarget->height);
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silhouetteTexture.setTextureID(renderTarget->texture);
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}
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