diff options
Diffstat (limited to 'source/blender/gpu/intern/gpu_state.c')
| -rw-r--r-- | source/blender/gpu/intern/gpu_state.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/source/blender/gpu/intern/gpu_state.c b/source/blender/gpu/intern/gpu_state.c index d6f044a79e3..908f5fa5771 100644 --- a/source/blender/gpu/intern/gpu_state.c +++ b/source/blender/gpu/intern/gpu_state.c @@ -370,4 +370,44 @@ void gpuPopAttr(void) #undef Attr #undef AttrStack +/* Default OpenGL State + * + * This is called on startup, for opengl offscreen render. + * Generally we should always return to this state when + * temporarily modifying the state for drawing, though that are (undocumented) + * exceptions that we should try to get rid of. */ + +void GPU_state_init(void) +{ + GPU_program_point_size(false); + + glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS); + + glDisable(GL_BLEND); + glDisable(GL_DEPTH_TEST); + glDisable(GL_COLOR_LOGIC_OP); + glDisable(GL_STENCIL_TEST); + glDisable(GL_DITHER); + + glDepthFunc(GL_LEQUAL); + glDepthRange(0.0, 1.0); + + glFrontFace(GL_CCW); + glCullFace(GL_BACK); + glDisable(GL_CULL_FACE); + + /* Is default but better be explicit. */ + glEnable(GL_MULTISAMPLE); + + /* This is a bit dangerous since addons could change this. */ + glEnable(GL_PRIMITIVE_RESTART); + glPrimitiveRestartIndex((GLuint)0xFFFFFFFF); + + /* TODO: Should become default. But needs at least GL 4.3 */ + if (GLEW_ARB_ES3_compatibility) { + /* Takes predecence over GL_PRIMITIVE_RESTART */ + glEnable(GL_PRIMITIVE_RESTART_FIXED_INDEX); + } +} + /** \} */ |