55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
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/*
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#include <GL/glew.h>
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*/
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#include <GLES2/gl2.h>
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#include "../../HEADERS/EFFECTS/ReelManager.h"
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#include <vector>
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/* equals stdlib.h from C */
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#include <cstdlib>
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ReelManager::ReelManager(unsigned int textureNumber, unsigned int width, unsigned int height) {
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TEXTURE_NUM = textureNumber;
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textures = (GLuint*) malloc(TEXTURE_NUM * sizeof(GLuint));
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glGenFramebuffers(1, &FBO);
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glGenTextures(TEXTURE_NUM, textures);
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for (int i = 0; i < TEXTURE_NUM; i++) {
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, textures[i]);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
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}
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glBindTexture(GL_TEXTURE_2D, 0);
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}
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void ReelManager::nextTexture() {
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currentIndex = ++currentIndex % TEXTURE_NUM;
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glBindFramebuffer(GL_FRAMEBUFFER, FBO);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, textures[currentIndex], 0);
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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}
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void ReelManager::clearTexture() {
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glBindFramebuffer(GL_FRAMEBUFFER, FBO);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, textures[currentIndex], 0);
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glClearColor(0.0, 0.0, 0.0, 0.0);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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}
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GLuint ReelManager::getFBO() {
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return FBO;
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}
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std::vector<GLuint> ReelManager::getTextures() {
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std::vector<GLuint> vec = std::vector<GLuint>();
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for (int i = currentIndex + 1 ; i < TEXTURE_NUM; i++) {
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vec.push_back(textures[i]);
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}
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for (int i = 0; i <= currentIndex; i++) {
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vec.push_back(textures[i]);
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}
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return vec;
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}
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