Fix T40498 invalid textures flickering.

Issue here is most likely sampler uniforms and textures not being
updated properly when zero binding is created. Solution for now is to
allow zero binding but when this happens use sexy pink invalid texture
instead :p.

1 files changed, 3 insertions, 0 deletions

diff --git a/source/blender/gpu/GPU_extensions.h b/source/blender/gpu/GPU_extensions.h
index e97cc57055f..04c4119df6e 100644
--- a/source/blender/gpu/GPU_extensions.h
+++ b/source/blender/gpu/GPU_extensions.h
@@ -117,6 +117,9 @@ GPUTexture *GPU_texture_create_vsm_shadow_map(int size, char err_out[256]);
 GPUTexture *GPU_texture_from_blender(struct Image *ima,
 	struct ImageUser *iuser, bool is_data, double time, int mipmap);
 GPUTexture *GPU_texture_from_preview(struct PreviewImage *prv, int mipmap);
+void GPU_invalid_tex_init(void);
+void GPU_invalid_tex_bind(int mode);
+void GPU_invalid_tex_free(void);
 
 void GPU_texture_free(GPUTexture *tex);