comparison: src/gl/abstractshaderprogram.cpp
src/gl/abstractshaderprogram.cpp
- changeset 102
- 9f435f66bd0c
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| 101:910890292639 | 102:9f435f66bd0c |
|---|---|
| 1 /* | |
| 2 * LDForge: LDraw parts authoring CAD | |
| 3 * Copyright (C) 2020 Teemu Piippo | |
| 4 * | |
| 5 * This program is free software: you can redistribute it and/or modify | |
| 6 * it under the terms of the GNU General Public License as published by | |
| 7 * the Free Software Foundation, either version 3 of the License, or | |
| 8 * (at your option) any later version. | |
| 9 * | |
| 10 * This program is distributed in the hope that it will be useful, | |
| 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 * GNU General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License | |
| 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 */ | |
| 18 | |
| 19 #include "abstractshaderprogram.h" | |
| 20 | |
| 21 AbstractShaderProgram::AbstractBasicShaderProgram(const QVector<ArraySpecification>& arraySpecifications, QObject* parent) : | |
| 22 QObject{parent}, | |
| 23 buffer{QOpenGLBuffer::VertexBuffer}, | |
| 24 vertexShader{QOpenGLShader::Vertex}, | |
| 25 fragmentShader{QOpenGLShader::Fragment} | |
| 26 { | |
| 27 this->arrays.reserve(arraySpecifications.size()); | |
| 28 for (const ArraySpecification& arraySpecification : arraySpecifications) | |
| 29 { | |
| 30 this->arrays.emplace_back({arraySpecification}); | |
| 31 } | |
| 32 } | |
| 33 | |
| 34 void AbstractShaderProgram::initialize() | |
| 35 { | |
| 36 if (not this->isInitialized) | |
| 37 { | |
| 38 this->initializeOpenGLFunctions(); | |
| 39 this->isInitialized = true; | |
| 40 this->program.emplace(this); | |
| 41 gl::buildShaders(&*this->program, this->vertexShaderSource(), this->fragmentShaderSource()); | |
| 42 this->program->bind(); | |
| 43 for (auto& array : this->arrays) | |
| 44 { | |
| 45 array.buffer.create(); | |
| 46 array.buffer.bind(); | |
| 47 array.buffer.setUsagePattern(array.specification.bufferUsagePattern); | |
| 48 array.vertexArrayObject.create(); | |
| 49 array.vertexArrayObject.bind(); | |
| 50 } | |
| 51 this->setupVertexArrays(); | |
| 52 this->vertexArrayObject.release(); | |
| 53 this->releaseBuffers(); | |
| 54 this->buffer.release(); | |
| 55 this->program->release(); | |
| 56 this->checkForGLErrors(); | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 void AbstractShaderProgram::setViewMatrix(const glm::mat4& newViewMatrix) | |
| 61 { | |
| 62 this->setMatrix("view", newViewMatrix); | |
| 63 } | |
| 64 | |
| 65 void AbstractShaderProgram::setProjectionMatrix(const glm::mat4& newProjectionMatrix) | |
| 66 { | |
| 67 this->setMatrix("projection", newProjectionMatrix); | |
| 68 } | |
| 69 | |
| 70 void AbstractShaderProgram::setModelMatrix(const glm::mat4& newModelMatrix) | |
| 71 { | |
| 72 this->setMatrix("model", newModelMatrix); | |
| 73 } | |
| 74 | |
| 75 void AbstractShaderProgram::setMatrix(const char* name, const glm::mat4& matrix) | |
| 76 { | |
| 77 Q_ASSERT(this->isInitialized); | |
| 78 this->program->bind(); | |
| 79 this->program->setUniformMatrix(name, matrix); | |
| 80 this->program->release(); | |
| 81 this->checkForGLErrors(); | |
| 82 } | |
| 83 | |
| 84 void AbstractShaderProgram::draw() | |
| 85 { | |
| 86 this->program->bind(); | |
| 87 for (Array& array : this->arrays) | |
| 88 { | |
| 89 array.vertexArrayObject.bind(); | |
| 90 glDrawArrays(array.specification.drawMode, 0, array.count); | |
| 91 this->vertexArrayObject.release(); | |
| 92 } | |
| 93 this->program->release(); | |
| 94 this->checkForGLErrors(); | |
| 95 } | |
| 96 | |
| 97 void AbstractShaderProgram::teardown() | |
| 98 { | |
| 99 this->vertexArrayObject.destroy(); | |
| 100 this->buffer.destroy(); | |
| 101 this->program.reset(); | |
| 102 } | |
| 103 | |
| 104 void AbstractShaderProgram::checkForGLErrors() | |
| 105 { | |
| 106 gl::checkForGLErrors(qobject_cast<QWidget*>(this->parent())); | |
| 107 } | |
| 108 | |
| 109 void AbstractShaderProgram::upload(Array* array, const void* data, int count) | |
| 110 { | |
| 111 array->count = count; | |
| 112 array->buffer->buffer.allocate(data, count * array->specification.vertexSize); | |
| 113 } |
