62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
#include "texture.h"
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#include "glassert.h"
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#include "utils.h"
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Texture::Texture(const std::string filename) : type(GL_TEXTURE_2D)
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{
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glAssert(glGenTextures(1, &texId));
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glAssert(glBindTexture(type, texId));
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createTexture(filename, GL_TEXTURE_2D);
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setWrap(GL_REPEAT);
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setFiltering(GL_LINEAR);
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}
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Texture::Texture(const std::string filename[6]) : type(GL_TEXTURE_CUBE_MAP)
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{
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glAssert(glActiveTexture(GL_TEXTURE0));
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glAssert(glGenTextures(1, &texId));
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glAssert(glBindTexture(type, texId));
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for(int i=0; i<6; ++i)
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{
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createTexture(filename[i], GL_TEXTURE_CUBE_MAP_POSITIVE_X + i);
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setWrap(GL_CLAMP_TO_EDGE);
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setFiltering(GL_LINEAR);
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}
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}
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Texture::~Texture()
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{
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glAssert(glDeleteTextures(1, &texId));
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}
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void Texture::createTexture(std::string filename, GLenum textureSlot)
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{
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Utils::Image img(filename);
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int bpp = (img.depth() == 32) ? GL_RGBA : GL_RGB;
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int format = (img.depth() == 32) ? GL_BGRA : GL_BGR;
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glAssert(glTexImage2D(textureSlot, 0, bpp, img.width(), img.height(), 0, format, GL_UNSIGNED_BYTE, img.pixels()));
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}
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void Texture::setWrap(GLint wrap)
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{
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glAssert(glTexParameteri(type, GL_TEXTURE_WRAP_S, wrap));
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glAssert(glTexParameteri(type, GL_TEXTURE_WRAP_T, wrap));
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glAssert(glTexParameteri(type, GL_TEXTURE_WRAP_R, wrap));
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}
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void Texture::setFiltering(GLint filter)
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{
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glAssert(glTexParameteri(type, GL_TEXTURE_MIN_FILTER, filter));
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glAssert(glTexParameteri(type, GL_TEXTURE_MAG_FILTER, filter));
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}
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void Texture::bind(int slot)
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{
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GLenum texSlot = GL_TEXTURE0+slot;
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glAssert(glActiveTexture(texSlot));
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glAssert(glBindTexture(type, texId));
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}
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