cso_context_destroy calls bind_state functions with NULL parameter

diff --git a/src/gallium/drivers/nv30/nv30_state.c b/src/gallium/drivers/nv30/nv30_state.c
index 722626d..80dfd9c 100644 (file)
--- a/src/gallium/drivers/nv30/nv30_state.c
+++ b/src/gallium/drivers/nv30/nv30_state.c
@@ -40,6 +40,10 @@ nv30_blend_state_bind(struct pipe_context *pipe, void *hwcso)
        struct nv30_context *nv30 = nv30_context(pipe);
        struct nv30_blend_state *cb = hwcso;
 
+       if (!hwcso) {
+               return;
+       }
+
        BEGIN_RING(rankine, NV34TCL_DITHER_ENABLE, 1);
        OUT_RING  (cb->d_enable);
 
@@ -236,6 +240,10 @@ nv30_sampler_state_bind(struct pipe_context *pipe, unsigned nr, void **sampler)
        struct nv30_context *nv30 = nv30_context(pipe);
        unsigned unit;
 
+       if (!sampler) {
+               return;
+       }
+
        for (unit = 0; unit < nr; unit++) {
                nv30->tex_sampler[unit] = sampler[unit];
                nv30->dirty_samplers |= (1 << unit);
@@ -346,6 +354,10 @@ nv30_rasterizer_state_bind(struct pipe_context *pipe, void *hwcso)
        struct nv30_context *nv30 = nv30_context(pipe);
        struct nv30_rasterizer_state *rs = hwcso;
 
+       if (!hwcso) {
+               return;
+       }
+
        BEGIN_RING(rankine, NV34TCL_SHADE_MODEL, 1);
        OUT_RING  (rs->shade_model);
 
@@ -422,6 +434,10 @@ nv30_depth_stencil_alpha_state_bind(struct pipe_context *pipe, void *hwcso)
        struct nv30_context *nv30 = nv30_context(pipe);
        struct nv30_depth_stencil_alpha_state *hw = hwcso;
 
+       if (!hwcso) {
+               return;
+       }
+
        BEGIN_RING(rankine, NV34TCL_DEPTH_FUNC, 3);
        OUT_RINGp ((uint32_t *)&hw->depth, 3);
        BEGIN_RING(rankine, NV34TCL_STENCIL_BACK_ENABLE, 16);
@@ -455,6 +471,10 @@ nv30_vp_state_bind(struct pipe_context *pipe, void *hwcso)
        struct nv30_context *nv30 = nv30_context(pipe);
        struct nv30_vertex_program *vp = hwcso;
 
+       if (!hwcso) {
+               return;
+       }
+
        nv30->vertprog.current = vp;
        nv30->dirty |= NV30_NEW_VERTPROG;
 }
@@ -487,6 +507,10 @@ nv30_fp_state_bind(struct pipe_context *pipe, void *hwcso)
        struct nv30_context *nv30 = nv30_context(pipe);
        struct nv30_fragment_program *fp = hwcso;
 
+       if (!hwcso) {
+               return;
+       }
+
        nv30->fragprog.current = fp;
        nv30->dirty |= NV30_NEW_FRAGPROG;
 }