diff options
Diffstat (limited to 'src/mesa/main')
| -rw-r--r-- | src/mesa/main/dd.h | 32 | ||||
| -rw-r--r-- | src/mesa/main/vtxfmt.c | 9 |
2 files changed, 38 insertions, 3 deletions
diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h index 411b6a7..a335f77 100644 --- a/src/mesa/main/dd.h +++ b/src/mesa/main/dd.h @@ -36,6 +36,22 @@ struct gl_pixelstore_attrib; struct gl_display_list; +#if FEATURE_ARB_vertex_buffer_object +/* Modifies GL_MAP_UNSYNCHRONIZED_BIT to allow driver to fail (return + * NULL) if buffer is unavailable for immediate mapping. + * + * Does GL_MAP_INVALIDATE_RANGE_BIT do this? It seems so, but it + * would require more book-keeping in the driver than seems necessary + * at this point. + * + * Does GL_MAP_INVALDIATE_BUFFER_BIT do this? Not really -- we don't + * want to provoke the driver to throw away the old storage, we will + * respect the contents of already referenced data. + */ +#define MESA_MAP_NOWAIT_BIT 0x0040 +#endif + + /** * Device driver function table. * Core Mesa uses these function pointers to call into device drivers. @@ -785,6 +801,16 @@ struct dd_function_table { void * (*MapBuffer)( GLcontext *ctx, GLenum target, GLenum access, struct gl_buffer_object *obj ); + /* May return NULL if MESA_MAP_NOWAIT_BIT is set in access: + */ + void * (*MapBufferRange)( GLcontext *ctx, GLenum target, + GLintptr offset, GLsizeiptr length, GLbitfield access, + struct gl_buffer_object *obj); + + void (*FlushMappedBufferRange) (GLcontext *ctx, GLenum target, + GLintptr offset, GLsizeiptr length, + struct gl_buffer_object *obj); + GLboolean (*UnmapBuffer)( GLcontext *ctx, GLenum target, struct gl_buffer_object *obj ); /*@}*/ @@ -954,6 +980,12 @@ struct dd_function_table { GLuint NeedFlush; GLuint SaveNeedFlush; + + /* Called prior to any of the GLvertexformat functions being + * called. Paired with Driver.FlushVertices(). + */ + void (*BeginVertices)( GLcontext *ctx ); + /** * If inside glBegin()/glEnd(), it should ASSERT(0). Otherwise, if * FLUSH_STORED_VERTICES bit in \p flags is set flushes any buffered diff --git a/src/mesa/main/vtxfmt.c b/src/mesa/main/vtxfmt.c index 0204979..1f807dc 100644 --- a/src/mesa/main/vtxfmt.c +++ b/src/mesa/main/vtxfmt.c @@ -54,9 +54,12 @@ ASSERT( tnl->Current ); \ ASSERT( tnl->SwapCount < NUM_VERTEX_FORMAT_ENTRIES ); \ ASSERT( tmp_offset >= 0 ); \ - \ - /* Save the swapped function's dispatch entry so it can be */ \ - /* restored later. */ \ + \ + if (tnl->SwapCount == 0) \ + ctx->Driver.BeginVertices( ctx ); \ + \ + /* Save the swapped function's dispatch entry so it can be */ \ + /* restored later. */ \ tnl->Swapped[tnl->SwapCount].location = & (((_glapi_proc *)ctx->Exec)[tmp_offset]); \ tnl->Swapped[tnl->SwapCount].function = (_glapi_proc)TAG(FUNC); \ tnl->SwapCount++; \ |