[Mesa-dev] [PATCH] draw: fix PIPE_MAX_SAMPLER/PIPE_MAX_SHADER_SAMPLER_VIEWS issues

[sroland at vmware.com]

From: Roland Scheidegger <sroland at vmware.com>

pstipple/aaline stages used PIPE_MAX_SAMPLER instead of
PIPE_MAX_SHADER_SAMPLER_VIEWS when dealing with sampler views.
Now these stages can't actually handle sampler_unit != texture_unit anyway
(they cannot work with d3d10 shaders at all due to using tex not sample
opcodes as "mixed mode" shaders are impossible) but this leads to crashes if
a driver just installs these stages and then more than PIPE_MAX_SAMPLER views
are set even if the stages aren't even used.
---
 src/gallium/auxiliary/draw/draw_pipe_aaline.c   |    6 +++---
 src/gallium/auxiliary/draw/draw_pipe_pstipple.c |    6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/gallium/auxiliary/draw/draw_pipe_aaline.c b/src/gallium/auxiliary/draw/draw_pipe_aaline.c
index c44c236..8483bd7 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_aaline.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_aaline.c
@@ -107,7 +107,7 @@ struct aaline_stage
    struct aaline_fragment_shader *fs;
    struct {
       void *sampler[PIPE_MAX_SAMPLERS];
-      struct pipe_sampler_view *sampler_views[PIPE_MAX_SAMPLERS];
+      struct pipe_sampler_view *sampler_views[PIPE_MAX_SHADER_SAMPLER_VIEWS];
    } state;
 
    /*
@@ -763,7 +763,7 @@ aaline_destroy(struct draw_stage *stage)
    struct pipe_context *pipe = stage->draw->pipe;
    uint i;
 
-   for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
+   for (i = 0; i < PIPE_MAX_SHADER_SAMPLER_VIEWS; i++) {
       pipe_sampler_view_reference(&aaline->state.sampler_views[i], NULL);
    }
 
@@ -937,7 +937,7 @@ aaline_set_sampler_views(struct pipe_context *pipe,
    for (i = 0; i < num; i++) {
       pipe_sampler_view_reference(&aaline->state.sampler_views[i], views[i]);
    }
-   for ( ; i < PIPE_MAX_SAMPLERS; i++) {
+   for ( ; i < PIPE_MAX_SHADER_SAMPLER_VIEWS; i++) {
       pipe_sampler_view_reference(&aaline->state.sampler_views[i], NULL);
    }
    aaline->num_sampler_views = num;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_pstipple.c b/src/gallium/auxiliary/draw/draw_pipe_pstipple.c
index 51f5a86..f38addd 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_pstipple.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_pstipple.c
@@ -87,7 +87,7 @@ struct pstip_stage
    struct pstip_fragment_shader *fs;
    struct {
       void *samplers[PIPE_MAX_SAMPLERS];
-      struct pipe_sampler_view *sampler_views[PIPE_MAX_SAMPLERS];
+      struct pipe_sampler_view *sampler_views[PIPE_MAX_SHADER_SAMPLER_VIEWS];
       const struct pipe_poly_stipple *stipple;
    } state;
 
@@ -592,7 +592,7 @@ pstip_destroy(struct draw_stage *stage)
    struct pstip_stage *pstip = pstip_stage(stage);
    uint i;
 
-   for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
+   for (i = 0; i < PIPE_MAX_SHADER_SAMPLER_VIEWS; i++) {
       pipe_sampler_view_reference(&pstip->state.sampler_views[i], NULL);
    }
 
@@ -731,7 +731,7 @@ pstip_set_sampler_views(struct pipe_context *pipe,
    for (i = 0; i < num; i++) {
       pipe_sampler_view_reference(&pstip->state.sampler_views[i], views[i]);
    }
-   for (; i < PIPE_MAX_SAMPLERS; i++) {
+   for (; i < PIPE_MAX_SHADER_SAMPLER_VIEWS; i++) {
       pipe_sampler_view_reference(&pstip->state.sampler_views[i], NULL);
    }
 
-- 
1.7.9.5