You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
109 lines
2.6 KiB
109 lines
2.6 KiB
#include <stdio.h>
|
|
#include <windows.h>
|
|
#include "utils.h"
|
|
|
|
char* LoadFileContent(const char*path)
|
|
{
|
|
char *pFileContent = NULL;
|
|
FILE*pFile = fopen(path, "rb");
|
|
if (pFile)
|
|
{
|
|
fseek(pFile, 0, SEEK_END);
|
|
int nLen = ftell(pFile);
|
|
if (nLen > 0)
|
|
{
|
|
rewind(pFile);
|
|
pFileContent = new char[nLen + 1];
|
|
fread(pFileContent, 1, nLen, pFile);
|
|
pFileContent[nLen] = '\0';
|
|
}
|
|
fclose(pFile);
|
|
}
|
|
return pFileContent;
|
|
}
|
|
|
|
|
|
|
|
unsigned char* LoadBMP(const char*path, int &width, int &height)
|
|
{
|
|
unsigned char*imageData = nullptr;
|
|
FILE *pFile = fopen(path, "rb");
|
|
if (pFile)
|
|
{
|
|
BITMAPFILEHEADER bfh;
|
|
fread(&bfh, sizeof(BITMAPFILEHEADER), 1, pFile);
|
|
if (bfh.bfType == 0x4D42)
|
|
{
|
|
BITMAPINFOHEADER bih;
|
|
fread(&bih, sizeof(BITMAPINFOHEADER), 1, pFile);
|
|
width = bih.biWidth;
|
|
height = bih.biHeight;
|
|
int pixelCount = width*height * 3;
|
|
imageData = new unsigned char[pixelCount];
|
|
fseek(pFile, bfh.bfOffBits, SEEK_SET);
|
|
fread(imageData, 1, pixelCount, pFile);
|
|
|
|
unsigned char temp;
|
|
for (int i = 0; i < pixelCount; i += 3)
|
|
{
|
|
temp = imageData[i + 2];
|
|
imageData[i + 2] = imageData[i];
|
|
imageData[i] = temp;
|
|
}
|
|
}
|
|
fclose(pFile);
|
|
}
|
|
return imageData;
|
|
}
|
|
|
|
GLuint CreateTextureFromFile(const char*filePath)
|
|
{
|
|
unsigned char*imageData;
|
|
int width, height;
|
|
imageData = LoadBMP(filePath, width, height);
|
|
|
|
GLuint texture;
|
|
glGenTextures(1, &texture);
|
|
glBindTexture(GL_TEXTURE_2D, texture);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, imageData);
|
|
glBindTexture(GL_TEXTURE_2D, 0);
|
|
delete imageData;
|
|
return texture;
|
|
}
|
|
|
|
void CheckGLError(const char*file, int line)
|
|
{
|
|
|
|
GLenum error = glGetError();
|
|
if (error != GL_NO_ERROR)
|
|
{
|
|
switch (error)
|
|
{
|
|
case GL_INVALID_ENUM:
|
|
printf("GL Error GL_INVALID_ENUM %s : %d\n", file, line);
|
|
break;
|
|
case GL_INVALID_VALUE:
|
|
printf("GL Error GL_INVALID_VALUE %s : %d\n", file, line);
|
|
break;
|
|
case GL_INVALID_OPERATION:
|
|
printf("GL Error GL_INVALID_OPERATION %s : %d\n", file, line);
|
|
break;
|
|
case GL_STACK_OVERFLOW:
|
|
printf("GL Error GL_STACK_OVERFLOW %s : %d\n", file, line);
|
|
break;
|
|
case GL_STACK_UNDERFLOW:
|
|
printf("GL Error GL_STACK_UNDERFLOW %s : %d\n", file, line);
|
|
break;
|
|
case GL_OUT_OF_MEMORY:
|
|
printf("GL Error GL_OUT_OF_MEMORY %s : %d\n", file, line);
|
|
break;
|
|
default:
|
|
printf("GL Error 0x%x %s : %d\n", error, file, line);
|
|
break;
|
|
}
|
|
}
|
|
}
|