OpenGL 3.3 texture mapping 3D objects - c++

Question

I'm trying to texture a 3D pool table with two different textures, one for the table top and one for the legs and the walls. The table top is basically a 2D rectangle on which I applied some green texture and everything worked fine. On the other hand when I try to texture the cubes composing the table I run into some sampling or mapping problems.
This is my code:
create the vaos and map
// Cube vertex data
float cubeVertices[ CUBE_NUM_VERTICES * VALS_PER_VERT ] = {
-1.0, -1.0, 1.0,
1.0, -1.0, 1.0,
1.0, 1.0, 1.0,
-1.0, 1.0, 1.0,
-1.0, -1.0, -1.0,
1.0, -1.0, -1.0,
1.0, 1.0, -1.0,
-1.0, 1.0, -1.0 };
// 12 triangles - 2 per face of the cube
unsigned int legWallIndices[CUBE_NUM_TRIS*3] = {
0,1,2, 2,3,0,
1,5,6, 6,2,1,
5,4,7, 7,6,5,
4,0,3, 3,7,4,
3,2,6, 6,7,3,
4,5,1, 1,0,4
};
float tableTopVertices[4 * VALS_PER_VERT] = {
-2.5f, 0.26f, -5.0f,
2.5f, 0.26f, -5.0f,
2.5f, 0.26f, 5.0f,
-2.5f, 0.26f, 5.0f,
};
unsigned int tableTopIndices[2*3] = {
0,1,2, 2,3,0,
};
float tabletTopTexCoord[4 * VALS_PER_TEX] = {
0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f
};
float legWallTexCoord[8 * VALS_PER_TEX] = {
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f,
// not working properly idk why
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f,
};
vertex shader
in vec2 green_tex_coord;
in vec2 wood_tex_coord;
out vec2 st1;
out vec2 st2;
void main(void)
{
st1 = green_tex_coord;
st2 = wood_tex_coord;
}
fragment shader
in vec2 st1;
in vec2 st2;
uniform sampler2D greenTexMap;
uniform sampler2D woodTexMap;
void main(void)
{
vec4 topClr = vec4(0.04, 0.42, 0.1, 1.0);
vec4 sideClr = vec4(0.5, 0.35, 0.05, 1.0);
if (predicate){
fragColour = topClr * texture(greenTexMap, st1);
}else{
fragColour = sideClr * texture(woodTexMap, st2);
}
}
This is the result (the green texture is working but the wood one is not) table
If I remove * texture(woodTexMap, st2) the colour changes (it shows sideClr), this means the texture reaches the fragment but it is badly sampled or mapped. If I remove sideClr * the colour changes again showing a plain colour and not a texture (actually it looks like it samples the bottom left corner of my picture).
Am I mapping it the wrong way or is it a sampling problem?