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GLfloat texcoord[8] = {0.0gf,0.0f, 1.0f,0.0f,
1.0f,1.0f, 0.0f,1.0f};
GLfloat vertices[8] = {0.0f,0.0f, width,0.0f,
width,height, 0.0f,height};
GLubyte vcolors[16] = {255,255,255,255, 255,255,255,255,
255,255,255,255, 255,255,255,255};
GLubyte vcolors2[16] = {0,255,0,255, 0,255,0,255,
0,255,0,0, 0,255,0,255};
//rect with texture, texture = "hello world" in red
glEnable(GL_TEXTURE_2D);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
uint i = 0;
uint j = 0;
uint k = 0;
glBegin(GL_QUADS);
for(;i < 8 || j < 8 || k < 16;i+=2,j+=2,k+=4){
glColor4ubv(&vcolors[k]);
glTexCoord2fv(&texcoord[i]);
glVertex2fv(&vertices[j]);
}
glEnd();
//rect without texture and with green color
glDisable(GL_TEXTURE_2D);
glBlendFunc(GL_SRC_ALPHA,GL_ONE);
uint i = 0;
uint j = 0;
uint k = 0;
glBegin(GL_QUADS);
for(;i < 8 || j < 8 || k < 16;i+=2,j+=2,k+=4){
glColor4ubv(&vcolors2[k]);
glTexCoord2fv(&texcoord[i]);
glVertex2fv(&vertices[j]);
}
glEnd();
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