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author | Ben Skeggs <skeggsb@gmail.com> | 2008-03-13 13:39:05 +1100 |
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committer | Ben Skeggs <skeggsb@gmail.com> | 2008-03-13 13:39:05 +1100 |
commit | 03ec66375889f049b09f39ba98515aa35ac48164 (patch) | |
tree | e149d8defb52b1252af982b459902ee0800b17cd /src/gallium/auxiliary/sct/usage.c | |
parent | bd4fe0e87c1b979973d9a76aa48de5fbbb8d52b7 (diff) | |
parent | 2366bb1baf2e9ae5b6ecf19f66ae9e0a4b0d2f36 (diff) |
Merge remote branch 'upstream/gallium-0.1' into nouveau-gallium-0.1
Diffstat (limited to 'src/gallium/auxiliary/sct/usage.c')
-rw-r--r-- | src/gallium/auxiliary/sct/usage.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/sct/usage.c b/src/gallium/auxiliary/sct/usage.c new file mode 100644 index 0000000000..6227f19962 --- /dev/null +++ b/src/gallium/auxiliary/sct/usage.c @@ -0,0 +1,61 @@ +/* surface / context tracking */ + + +/* + +context A: + render to texture T + +context B: + texture from T + +----------------------- + +flush surface: + which contexts are bound to the surface? + +----------------------- + +glTexSubImage(): + which contexts need to be flushed? + + */ + + +/* + +in MakeCurrent(): + + call sct_bind_surfaces(context, list of surfaces) to update the + dependencies between context and surfaces + + +in SurfaceFlush(), or whatever it is in D3D: + + call sct_get_surface_contexts(surface) to get a list of contexts + which are currently bound to the surface. + + + +in BindTexture(): + + call sct_bind_texture(context, texture) to indicate that the texture + is used in the scene. + + +in glTexSubImage() or RenderToTexture(): + + call sct_is_texture_used(context, texture) to determine if the texture + has been used in the scene, but the scene's not flushed. If TRUE is + returned it means the scene has to be rendered/flushed before the contents + of the texture can be changed. + + +in psb_scene_flush/terminate(): + + call sct_flush_textures(context) to tell the SCT that the textures which + were used in the scene can be released. + + + +*/ |