diff options
| author | Brecht Van Lommel <brechtvanlommel@pandora.be> | 2012-05-25 13:26:47 +0400 |
|---|---|---|
| committer | Brecht Van Lommel <brechtvanlommel@pandora.be> | 2012-05-25 13:26:47 +0400 |
| commit | 19dd66cf3b0108c0a74d7626b31c1b8cb9dd57fe (patch) | |
| tree | ef7c42022e4adddf82a0bc5929f30d61aa976354 /source/blender/gpu | |
| parent | 29e89dc996c0addbc36b4d0051760842b4923bb6 (diff) | |
3D View: add Backface Culling option, to hide faces when seen from the back side,
found in the Display panel.
Patch by Simon Kirk and Irie Shinsuke, refactored to also work for non-mesh objects
and avoid globals.
Diffstat (limited to 'source/blender/gpu')
| -rw-r--r-- | source/blender/gpu/intern/gpu_draw.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/source/blender/gpu/intern/gpu_draw.c b/source/blender/gpu/intern/gpu_draw.c index 604e8f8d50e..fb277815878 100644 --- a/source/blender/gpu/intern/gpu_draw.c +++ b/source/blender/gpu/intern/gpu_draw.c @@ -1017,6 +1017,8 @@ static struct GPUMaterialState { float (*gviewmat)[4]; float (*gviewinv)[4]; + int backface_culling; + GPUBlendMode *alphablend; GPUBlendMode alphablend_fixed[FIXEDMAT]; int use_alpha_pass, is_alpha_pass; @@ -1085,6 +1087,8 @@ void GPU_begin_object_materials(View3D *v3d, RegionView3D *rv3d, Scene *scene, O GMS.lastretval = -1; GMS.lastalphablend = GPU_BLEND_SOLID; + GMS.backface_culling = (v3d->flag2 & V3D_BACKFACE_CULLING); + GMS.gob = ob; GMS.gscene = scene; GMS.totmat= ob->totcol+1; /* materials start from 1, default material is 0 */ @@ -1248,6 +1252,13 @@ int GPU_enable_material(int nr, void *attribs) alphablend= mat->game.alpha_blend; if (GMS.is_alpha_pass) glDepthMask(1); + + if (GMS.backface_culling) { + if(mat->game.flag) + glEnable(GL_CULL_FACE); + else + glDisable(GL_CULL_FACE); + } } else { /* or do fixed function opengl material */ @@ -1283,6 +1294,9 @@ void GPU_disable_material(void) GMS.lastretval= 1; if (GMS.gboundmat) { + if (GMS.backface_culling) + glDisable(GL_CULL_FACE); + if (GMS.is_alpha_pass) glDepthMask(0); GPU_material_unbind(GPU_material_from_blender(GMS.gscene, GMS.gboundmat)); GMS.gboundmat= NULL; |