Exemplo n.º 1
0
Arquivo: util.c Projeto: AdamJB/Craft
void mat_perspective(
    float *matrix, float fov, float aspect,
    float znear, float zfar)
{
    float ymax, xmax;
    ymax = znear * tanf(fov * PI / 360.0);
    xmax = ymax * aspect;
    mat_frustum(matrix, -xmax, xmax, -ymax, ymax, znear, zfar);
}
Exemplo n.º 2
0
static void
Reshape(int width, int height)
{
   float ar = (float) width / height;
   WinWidth = width;
   WinHeight = height;
   glViewport(0, 0, width, height);
   mat_frustum(Projection, -ar, ar, -1, 1, 3, 25);

   /* pass viewport dims to the shader */
   {
      GLfloat viewport[4];
      glGetFloatv(GL_VIEWPORT, viewport);
      glUniform2f(uViewportSize, viewport[2], viewport[3]);
   }
}