diff options
author | Aapo Tahkola <aet@rasterburn.org> | 2005-02-08 04:31:29 +0000 |
---|---|---|
committer | Aapo Tahkola <aet@rasterburn.org> | 2005-02-08 04:31:29 +0000 |
commit | 315afce941a7247ecf79da520d974a59534e8779 (patch) | |
tree | f19faa58f13f462003667de15d03d1c3480607ff /src/mesa/drivers/dri/r300 | |
parent | 3f847b73f3f480eb823f58e73edf53c2a5317a55 (diff) |
Implemented checks that prevent r300 from locking up when bad number of verts are given. Also tweaked WARN_ONCE a bit to handle va-args.
Diffstat (limited to 'src/mesa/drivers/dri/r300')
-rw-r--r-- | src/mesa/drivers/dri/r300/r300_context.h | 8 | ||||
-rw-r--r-- | src/mesa/drivers/dri/r300/r300_render.c | 150 |
2 files changed, 101 insertions, 57 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_context.h b/src/mesa/drivers/dri/r300/r300_context.h index 54cc7e3fc1..428614b7a6 100644 --- a/src/mesa/drivers/dri/r300/r300_context.h +++ b/src/mesa/drivers/dri/r300/r300_context.h @@ -56,13 +56,17 @@ typedef struct r300_context *r300ContextPtr; /* Checkpoint.. for convenience */ #define CPT { fprintf(stderr, "%s:%s line %d\n", __FILE__, __FUNCTION__, __LINE__); } -#define WARN_ONCE(a) { \ +/* From http://gcc.gnu.org/onlinedocs/gcc-3.2.3/gcc/Variadic-Macros.html . + I suppose we could inline this and use macro to fetch out __LINE__ and stuff in case we run into trouble + with other compilers ... GLUE! +*/ +#define WARN_ONCE(a, ...) { \ static int warn##__LINE__=1; \ if(warn##__LINE__){ \ fprintf(stderr, "*********************************WARN_ONCE*********************************\n"); \ fprintf(stderr, "File %s function %s line %d\n", \ __FILE__, __FUNCTION__, __LINE__); \ - fprintf(stderr, a);\ + fprintf(stderr, a, ## __VA_ARGS__);\ fprintf(stderr, "***************************************************************************\n"); \ warn##__LINE__=0;\ } \ diff --git a/src/mesa/drivers/dri/r300/r300_render.c b/src/mesa/drivers/dri/r300/r300_render.c index 7623e9e23a..9a79b97cc0 100644 --- a/src/mesa/drivers/dri/r300/r300_render.c +++ b/src/mesa/drivers/dri/r300/r300_render.c @@ -123,70 +123,111 @@ static void update_zbias(GLcontext * ctx, int prim) * rasterization hardware for rendering. **********************************************************************/ -static int r300_get_primitive_type(r300ContextPtr rmesa, +static int r300_get_primitive_type(r300ContextPtr rmesa, GLcontext *ctx, int prim) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + struct vertex_buffer *VB = &tnl->vb; + GLuint i; + int type=-1; + + switch (prim & PRIM_MODE_MASK) { + case GL_POINTS: + type=R300_VAP_VF_CNTL__PRIM_POINTS; + break; + case GL_LINES: + type=R300_VAP_VF_CNTL__PRIM_LINES; + break; + case GL_LINE_STRIP: + type=R300_VAP_VF_CNTL__PRIM_LINE_STRIP; + break; + case GL_LINE_LOOP: + type=R300_VAP_VF_CNTL__PRIM_LINE_LOOP; + break; + case GL_TRIANGLES: + type=R300_VAP_VF_CNTL__PRIM_TRIANGLES; + break; + case GL_TRIANGLE_STRIP: + type=R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP; + break; + case GL_TRIANGLE_FAN: + type=R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN; + break; + case GL_QUADS: + type=R300_VAP_VF_CNTL__PRIM_QUADS; + break; + case GL_QUAD_STRIP: + type=R300_VAP_VF_CNTL__PRIM_QUAD_STRIP; + break; + case GL_POLYGON: + type=R300_VAP_VF_CNTL__PRIM_POLYGON; + break; + default: + fprintf(stderr, "%s:%s Do not know how to handle primitive %02x - help me !\n", + __FILE__, __FUNCTION__, + prim & PRIM_MODE_MASK); + return -1; + break; + } + return type; +} + +static int r300_get_num_verts(r300ContextPtr rmesa, GLcontext *ctx, - int start, - int end, + int num_verts, int prim) { TNLcontext *tnl = TNL_CONTEXT(ctx); struct vertex_buffer *VB = &tnl->vb; GLuint i; - int type=-1, min_vertices=0; + int type=-1, verts_off=0; char *name="UNKNOWN"; - if(end<=start)return -1; /* do we need to watch for this ? */ - switch (prim & PRIM_MODE_MASK) { case GL_POINTS: name="P"; - type=R300_VAP_VF_CNTL__PRIM_POINTS; - min_vertices=1; + verts_off = 0; break; case GL_LINES: name="L"; - type=R300_VAP_VF_CNTL__PRIM_LINES; - min_vertices=2; + verts_off = num_verts % 2; break; case GL_LINE_STRIP: name="LS"; - type=R300_VAP_VF_CNTL__PRIM_LINE_STRIP; - min_vertices=2; + verts_off = num_verts % 2; break; case GL_LINE_LOOP: name="LL"; - min_vertices=2; - return -1; + verts_off = num_verts % 2; break; case GL_TRIANGLES: name="T"; - type=R300_VAP_VF_CNTL__PRIM_TRIANGLES; - min_vertices=3; + verts_off = num_verts % 3; break; case GL_TRIANGLE_STRIP: name="TS"; - type=R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP; - min_vertices=3; + if(num_verts < 3) + verts_off = num_verts; break; case GL_TRIANGLE_FAN: name="TF"; - type=R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN; - min_vertices=3; + if(num_verts < 3) + verts_off = num_verts; break; case GL_QUADS: name="Q"; - type=R300_VAP_VF_CNTL__PRIM_QUADS; - min_vertices=4; + verts_off = num_verts % 4; break; case GL_QUAD_STRIP: name="QS"; - type=R300_VAP_VF_CNTL__PRIM_QUAD_STRIP; - min_vertices=4; + if(num_verts < 4) + verts_off = num_verts; + else + verts_off = num_verts % 2; break; case GL_POLYGON: name="P"; - type=R300_VAP_VF_CNTL__PRIM_POLYGON; - min_vertices=3; + if(num_verts < 3) + verts_off = num_verts; break; default: fprintf(stderr, "%s:%s Do not know how to handle primitive %02x - help me !\n", @@ -195,20 +236,17 @@ static int r300_get_primitive_type(r300ContextPtr rmesa, return -1; break; } - #if 0 - fprintf(stderr, "[%d-%d]%s ", start, end, name); - #endif - if(start+min_vertices>end){ - static int warn_once=1; - if(warn_once){ - fprintf(stderr, "%s:%s ***WARN_ONCE*** Not enough vertices to draw primitive %02x - help me !\n", - __FILE__, __FUNCTION__, - prim & PRIM_MODE_MASK); - warn_once=0; - } - return -1; - } - return type; + + if(num_verts - verts_off == 0){ + WARN_ONCE("user error: Need more than %d vertices to draw primitive %s !\n", num_verts, name); + return 0; + } + + if(verts_off > 0){ + WARN_ONCE("user error: %d is not a valid number of vertices for primitive %s !\n", num_verts, name); + } + + return num_verts - verts_off; } /* This function compiles GL context into state registers that @@ -249,11 +287,12 @@ static void r300_render_immediate_primitive(r300ContextPtr rmesa, TNLcontext *tnl = TNL_CONTEXT(ctx); struct vertex_buffer *VB = &tnl->vb; GLuint i, render_inputs; - int k, type; + int k, type, num_verts; LOCAL_VARS - type=r300_get_primitive_type(rmesa, ctx, start, end, prim); - + type=r300_get_primitive_type(rmesa, ctx, prim); + num_verts=r300_get_num_verts(rmesa, ctx, end-start, prim); + #if 0 fprintf(stderr,"ObjPtr: size=%d stride=%d\n", VB->ObjPtr->size, VB->ObjPtr->stride); @@ -263,14 +302,14 @@ static void r300_render_immediate_primitive(r300ContextPtr rmesa, VB->TexCoordPtr[0]->size, VB->TexCoordPtr[0]->stride); #endif - if(type<0)return; + if(type<0 || num_verts <= 0)return; if(!VB->ObjPtr){ WARN_ONCE("FIXME: Don't know how to handle GL_ARB_vertex_buffer_object correctly\n"); return; } /* A packet cannot have more than 16383 data words.. */ - if(((end-start)*4*rmesa->state.aos_count)>16380){ + if((num_verts*4*rmesa->state.aos_count)>16380){ WARN_ONCE("Too many vertices to paint. Fix me !\n"); return; } @@ -289,9 +328,9 @@ static void r300_render_immediate_primitive(r300ContextPtr rmesa, return; } - start_immediate_packet(end-start, type, 4*rmesa->state.aos_count); + start_immediate_packet(num_verts, type, 4*rmesa->state.aos_count); - for(i=start;i<end;i++){ + for(i=start;i<start+num_verts;i++){ #if 0 fprintf(stderr, "* (%f %f %f %f) (%f %f %f %f)\n", VEC_ELT(VB->ObjPtr, GLfloat, i)[0], @@ -526,15 +565,16 @@ static void r300_render_vb_primitive(r300ContextPtr rmesa, int end, int prim) { - int type; + int type, num_verts; LOCAL_VARS - - if(end<=start)return; /* do we need to watch for this ? */ - type=r300_get_primitive_type(rmesa, ctx, start, end, prim); - if(type<0)return; - - fire_AOS(PASS_PREFIX end-start, type); + type=r300_get_primitive_type(rmesa, ctx, prim); + num_verts=r300_get_num_verts(rmesa, ctx, end-start, prim); + + if(type<0 || num_verts <= 0)return; + + + fire_AOS(PASS_PREFIX num_verts, type); } static GLboolean r300_run_vb_render(GLcontext *ctx, @@ -612,7 +652,7 @@ static GLboolean r300_run_render(GLcontext *ctx, if (RADEON_DEBUG == DEBUG_PRIMS) fprintf(stderr, "%s\n", __FUNCTION__); - + #if 1 |