void ogles_validate_transform_impl(ogles_context_t* c, uint32_t want)
{
int dirty = c->transforms.dirty & want;
// Validate the modelview
if (dirty & transform_state_t::MODELVIEW) {
c->transforms.modelview.validate();
}
// Validate the projection stack (in fact, it's never needed)
if (dirty & transform_state_t::PROJECTION) {
c->transforms.projection.validate();
}
// Validate the viewport transformation
if (dirty & transform_state_t::VIEWPORT) {
vp_transform_t& vpt = c->transforms.vpt;
vpt.transform.matrix.load(vpt.matrix);
vpt.transform.picker();
}
// We need to update the mvp (used to transform each vertex)
if (dirty & transform_state_t::MVP) {
c->transforms.update_mvp();
// invalidate perspective (divide by W) and view volume clipping
ogles_invalidate_perspective(c);
}
// Validate the mvui (for normal transformation)
if (dirty & transform_state_t::MVUI) {
c->transforms.update_mvui();
ogles_invalidate_lighting_mvui(c);
}
// Validate the texture stack
if (dirty & transform_state_t::TEXTURE) {
for (int i=0; i<GGL_TEXTURE_UNIT_COUNT ; i++)
c->transforms.texture[i].validate();
}
// Validate the mvit4 (user-clip planes)
if (dirty & transform_state_t::MVIT) {
c->transforms.update_mvit();
}
c->transforms.dirty &= ~want;
}
static void enable_disable(ogles_context_t* c, GLenum cap, int enabled)
{
if ((cap >= GL_LIGHT0) && (cap<GL_LIGHT0+OGLES_MAX_LIGHTS)) {
c->lighting.lights[cap-GL_LIGHT0].enable = enabled;
c->lighting.enabledLights &= ~(1<<(cap-GL_LIGHT0));
c->lighting.enabledLights |= (enabled<<(cap-GL_LIGHT0));
return;
}
switch (cap) {
case GL_POINT_SMOOTH:
c->point.smooth = enabled;
break;
case GL_LINE_SMOOTH:
c->line.smooth = enabled;
break;
case GL_POLYGON_OFFSET_FILL:
c->polygonOffset.enable = enabled;
break;
case GL_CULL_FACE:
c->cull.enable = enabled;
break;
case GL_LIGHTING:
c->lighting.enable = enabled;
break;
case GL_COLOR_MATERIAL:
c->lighting.colorMaterial.enable = enabled;
break;
case GL_NORMALIZE:
case GL_RESCALE_NORMAL:
c->transforms.rescaleNormals = enabled ? cap : 0;
// XXX: invalidate mvit
break;
case GL_CLIP_PLANE0:
case GL_CLIP_PLANE1:
case GL_CLIP_PLANE2:
case GL_CLIP_PLANE3:
case GL_CLIP_PLANE4:
case GL_CLIP_PLANE5:
c->clipPlanes.enable &= ~(1<<(cap-GL_CLIP_PLANE0));
c->clipPlanes.enable |= (enabled<<(cap-GL_CLIP_PLANE0));
ogles_invalidate_perspective(c);
break;
case GL_FOG:
case GL_DEPTH_TEST:
ogles_invalidate_perspective(c);
// fall-through...
case GL_BLEND:
case GL_SCISSOR_TEST:
case GL_ALPHA_TEST:
case GL_COLOR_LOGIC_OP:
case GL_DITHER:
case GL_STENCIL_TEST:
case GL_TEXTURE_2D:
// these need to fall through into the rasterizer
c->rasterizer.procs.enableDisable(c, cap, enabled);
break;
case GL_MULTISAMPLE:
case GL_SAMPLE_ALPHA_TO_COVERAGE:
case GL_SAMPLE_ALPHA_TO_ONE:
case GL_SAMPLE_COVERAGE:
// not supported in this implementation
break;
default:
ogles_error(c, GL_INVALID_ENUM);
return;
}
}
