void hmd_common_init(int w, int h)
{
/* Create the off-screen frame buffers. */
fbo_create(&L_fbo, 5 * w / 4 / 2, 5 * h / 4);
fbo_create(&R_fbo, 5 * w / 4 / 2, 5 * h / 4);
/* Create and initialize the distortion shader. */
glsl_create(&distortion, sizeof (hmd_vert) / sizeof (char *), hmd_vert,
sizeof (hmd_frag) / sizeof (char *), hmd_frag);
/* Initialize VBOs for the on-screen rectangles. */
glGenBuffers_(1, &L_vbo);
glBindBuffer_(GL_ARRAY_BUFFER, L_vbo);
glBufferData_(GL_ARRAY_BUFFER, sizeof (L_rect), L_rect, GL_STATIC_DRAW);
glGenBuffers_(1, &R_vbo);
glBindBuffer_(GL_ARRAY_BUFFER, R_vbo);
glBufferData_(GL_ARRAY_BUFFER, sizeof (R_rect), R_rect, GL_STATIC_DRAW);
glBindBuffer_(GL_ARRAY_BUFFER, 0);
}
void genvbo(int type, void *buf, int len, vtxarray **vas, int numva)
{
GLuint vbo;
glGenBuffers_(1, &vbo);
GLenum target = type==VBO_VBUF ? GL_ARRAY_BUFFER : GL_ELEMENT_ARRAY_BUFFER;
glBindBuffer_(target, vbo);
glBufferData_(target, len, buf, GL_STATIC_DRAW);
glBindBuffer_(target, 0);
vboinfo &vbi = vbos[vbo];
vbi.uses = numva;
vbi.data = new uchar[len];
memcpy(vbi.data, buf, len);
if(printvbo) conoutf(CON_DEBUG, "vbo %d: type %d, size %d, %d uses", vbo, type, len, numva);
loopi(numva)
{
vtxarray *va = vas[i];
switch(type)
{
case VBO_VBUF:
va->vbuf = vbo;
va->vdata = (vertex *)vbi.data;
break;
case VBO_EBUF:
va->ebuf = vbo;
va->edata = (ushort *)vbi.data;
break;
case VBO_SKYBUF:
va->skybuf = vbo;
va->skydata = (ushort *)vbi.data;
break;
}
}
}
GLAPI void APIENTRY glGenBuffers(
GLsizei n,
GLuint* buffers)
{
glGenBuffers_(n, buffers);
}
