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draw: update comments, rename vars in pstipple code

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This commit is contained in:
Brian Paul
2011-02-17 09:21:24 -07:00
parent 0adeaf00e6
commit 1fa97ddb25
1 changed files with 18 additions and 16 deletions
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src/gallium/auxiliary/draw/draw_pipe_pstipple.c
+18 -16
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@@ -27,8 +27,9 @@
/**
* Polygon stipple stage: implement polygon stipple with texture map and
* fragment program. The fragment program samples the texture and does
* a fragment kill for the stipple-failing fragments.
* fragment program. The fragment program samples the texture using the
* fragment window coordinate register and does a fragment kill for the
* stipple-failing fragments.
*
* Authors: Brian Paul
*/
@@ -114,7 +115,8 @@ struct pstip_stage
/**
* Subclass of tgsi_transform_context, used for transforming the
* user's fragment shader to add the special AA instructions.
* user's fragment shader to add the extra texture sample and fragment kill
* instructions.
*/
struct pstip_transform_context {
struct tgsi_transform_context base;
@@ -658,16 +660,16 @@ pstip_create_fs_state(struct pipe_context *pipe,
const struct pipe_shader_state *fs)
{
struct pstip_stage *pstip = pstip_stage_from_pipe(pipe);
struct pstip_fragment_shader *aafs = CALLOC_STRUCT(pstip_fragment_shader);
struct pstip_fragment_shader *pstipfs = CALLOC_STRUCT(pstip_fragment_shader);
if (aafs) {
aafs->state = *fs;
if (pstipfs) {
pstipfs->state = *fs;
/* pass-through */
aafs->driver_fs = pstip->driver_create_fs_state(pstip->pipe, fs);
pstipfs->driver_fs = pstip->driver_create_fs_state(pstip->pipe, fs);
}
return aafs;
return pstipfs;
}
@@ -675,12 +677,12 @@ static void
pstip_bind_fs_state(struct pipe_context *pipe, void *fs)
{
struct pstip_stage *pstip = pstip_stage_from_pipe(pipe);
struct pstip_fragment_shader *aafs = (struct pstip_fragment_shader *) fs;
struct pstip_fragment_shader *pstipfs = (struct pstip_fragment_shader *) fs;
/* save current */
pstip->fs = aafs;
pstip->fs = pstipfs;
/* pass-through */
pstip->driver_bind_fs_state(pstip->pipe,
(aafs ? aafs->driver_fs : NULL));
(pstipfs ? pstipfs->driver_fs : NULL));
}
@@ -688,14 +690,14 @@ static void
pstip_delete_fs_state(struct pipe_context *pipe, void *fs)
{
struct pstip_stage *pstip = pstip_stage_from_pipe(pipe);
struct pstip_fragment_shader *aafs = (struct pstip_fragment_shader *) fs;
struct pstip_fragment_shader *pstipfs = (struct pstip_fragment_shader *) fs;
/* pass-through */
pstip->driver_delete_fs_state(pstip->pipe, aafs->driver_fs);
pstip->driver_delete_fs_state(pstip->pipe, pstipfs->driver_fs);
if (aafs->pstip_fs)
pstip->driver_delete_fs_state(pstip->pipe, aafs->pstip_fs);
if (pstipfs->pstip_fs)
pstip->driver_delete_fs_state(pstip->pipe, pstipfs->pstip_fs);
FREE(aafs);
FREE(pstipfs);
}