43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
#include "Texture.h"
|
|
|
|
|
|
typedef unsigned char byte;
|
|
|
|
GLuint Core::LoadTexture( const char * filepath )
|
|
{
|
|
GLuint id;
|
|
glGenTextures(1, &id);
|
|
glBindTexture(GL_TEXTURE_2D, id);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
|
|
|
|
std::ifstream input( filepath, std::ios::binary );
|
|
if (!input.is_open())
|
|
{
|
|
std::cout << "Nie ma tekstury o takiej nazwie." << std::endl;
|
|
input.open("textures/a.jpg", std::ios::binary);
|
|
|
|
}
|
|
std::vector<char> buffer((
|
|
std::istreambuf_iterator<char>(input)),
|
|
(std::istreambuf_iterator<char>()));
|
|
|
|
unsigned long w, h;
|
|
std::vector<unsigned char> decoded;
|
|
decodePNG(decoded, w, h, (unsigned char*)&buffer[0], buffer.size(), true);
|
|
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, &decoded[0]);
|
|
glGenerateMipmap(GL_TEXTURE_2D);
|
|
|
|
return id;
|
|
}
|
|
|
|
void Core::SetActiveTexture(GLuint textureID, const char * shaderVariableName, GLuint programID, int textureUnit)
|
|
{
|
|
glUniform1i(glGetUniformLocation(programID, shaderVariableName), textureUnit);
|
|
glActiveTexture(GL_TEXTURE0 + textureUnit);
|
|
glBindTexture(GL_TEXTURE_2D, textureID);
|
|
}
|