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st/nine: Fix stateblocks crashes with lights

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We had several issues of crashes with it.
This should fix it.

Signed-off-by: Axel Davy <axel.davy@ens.fr>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
This commit is contained in:
Axel Davy 2016-02-06 19:29:10 +01:00
parent 6cba347530
commit 17078d92ea
1 changed files with 32 additions and 8 deletions
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40
src/gallium/state_trackers/nine/stateblock9.c
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@ -86,7 +86,7 @@ NineStateBlock9_dtor( struct NineStateBlock9 *This )
*/ */
static void static void
nine_state_copy_common(struct nine_state *dst, nine_state_copy_common(struct nine_state *dst,
const struct nine_state *src, struct nine_state *src,
struct nine_state *mask, /* aliases either src or dst */ struct nine_state *mask, /* aliases either src or dst */
const boolean apply, const boolean apply,
struct nine_range_pool *pool) struct nine_range_pool *pool)
@ -267,17 +267,41 @@ nine_state_copy_common(struct nine_state *dst,
} }
} }
if (mask->changed.group & NINE_STATE_FF_LIGHTING) { if (mask->changed.group & NINE_STATE_FF_LIGHTING) {
if (dst->ff.num_lights < mask->ff.num_lights) { unsigned num_lights = MAX2(dst->ff.num_lights, src->ff.num_lights);
/* Can happen in Capture() if device state has created new lights after
* the stateblock was created.
* Can happen in Apply() if the stateblock had recorded the creation of
* new lights. */
if (dst->ff.num_lights < num_lights) {
dst->ff.light = REALLOC(dst->ff.light, dst->ff.light = REALLOC(dst->ff.light,
dst->ff.num_lights * sizeof(D3DLIGHT9), dst->ff.num_lights * sizeof(D3DLIGHT9),
mask->ff.num_lights * sizeof(D3DLIGHT9)); num_lights * sizeof(D3DLIGHT9));
for (i = dst->ff.num_lights; i < mask->ff.num_lights; ++i) { memset(&dst->ff.light[dst->ff.num_lights], 0, (num_lights - dst->ff.num_lights) * sizeof(D3DLIGHT9));
memset(&dst->ff.light[i], 0, sizeof(D3DLIGHT9)); /* if mask == dst, a Type of 0 will trigger
dst->ff.light[i].Type = (D3DLIGHTTYPE)NINED3DLIGHT_INVALID; * "dst->ff.light[i] = src->ff.light[i];" later,
* which is what we want in that case. */
if (mask != dst) {
for (i = src->ff.num_lights; i < num_lights; ++i)
src->ff.light[i].Type = (D3DLIGHTTYPE)NINED3DLIGHT_INVALID;
} }
dst->ff.num_lights = mask->ff.num_lights; dst->ff.num_lights = num_lights;
} }
for (i = 0; i < mask->ff.num_lights; ++i) /* Can happen in Capture() if the stateblock had recorded the creation of
* new lights.
* Can happen in Apply() if device state has created new lights after
* the stateblock was created. */
if (src->ff.num_lights < num_lights) {
src->ff.light = REALLOC(src->ff.light,
src->ff.num_lights * sizeof(D3DLIGHT9),
num_lights * sizeof(D3DLIGHT9));
memset(&src->ff.light[src->ff.num_lights], 0, (num_lights - src->ff.num_lights) * sizeof(D3DLIGHT9));
for (i = src->ff.num_lights; i < num_lights; ++i)
src->ff.light[i].Type = (D3DLIGHTTYPE)NINED3DLIGHT_INVALID;
src->ff.num_lights = num_lights;
}
/* Note: mask is either src or dst, so at this point src, dst and mask
* have num_lights lights. */
for (i = 0; i < num_lights; ++i)
if (mask->ff.light[i].Type != NINED3DLIGHT_INVALID) if (mask->ff.light[i].Type != NINED3DLIGHT_INVALID)
dst->ff.light[i] = src->ff.light[i]; dst->ff.light[i] = src->ff.light[i];