diff options
Diffstat (limited to 'src/mesa/state_tracker/st_cb_bufferobjects.c')
-rw-r--r-- | src/mesa/state_tracker/st_cb_bufferobjects.c | 63 |
1 files changed, 48 insertions, 15 deletions
diff --git a/src/mesa/state_tracker/st_cb_bufferobjects.c b/src/mesa/state_tracker/st_cb_bufferobjects.c index f5d802055f..7021d73208 100644 --- a/src/mesa/state_tracker/st_cb_bufferobjects.c +++ b/src/mesa/state_tracker/st_cb_bufferobjects.c @@ -26,6 +26,11 @@ **************************************************************************/ +/** + * Functions for pixel buffer objects and vertex/element buffer objects. + */ + + #include "main/imports.h" #include "main/mtypes.h" #include "main/arrayobj.h" @@ -40,14 +45,6 @@ #include "pipe/p_inlines.h" - -/* Pixel buffers and Vertex/index buffers are handled through these - * mesa callbacks. Framebuffer/Renderbuffer objects are - * created/managed elsewhere. - */ - - - /** * There is some duplication between mesa's bufferobjects and our * bufmgr buffers. Both have an integer handle and a hashtable to @@ -191,7 +188,7 @@ st_bufferobj_map(GLcontext *ctx, GLenum target, GLenum access, struct gl_buffer_object *obj) { struct st_buffer_object *st_obj = st_buffer_object(obj); - GLuint flags; + uint flags; switch (access) { case GL_WRITE_ONLY: @@ -210,7 +207,7 @@ st_bufferobj_map(GLcontext *ctx, GLenum target, GLenum access, obj->Pointer = st_cond_flush_pipe_buffer_map(st_context(ctx), st_obj->buffer, flags); - if(obj->Pointer) { + if (obj->Pointer) { obj->Offset = 0; obj->Length = obj->Size; } @@ -218,7 +215,6 @@ st_bufferobj_map(GLcontext *ctx, GLenum target, GLenum access, } - /** * Called via glMapBufferRange(). */ @@ -229,7 +225,7 @@ st_bufferobj_map_range(GLcontext *ctx, GLenum target, { struct pipe_context *pipe = st_context(ctx)->pipe; struct st_buffer_object *st_obj = st_buffer_object(obj); - GLuint flags = 0; + uint flags = 0x0; char *map; if (access & GL_MAP_WRITE_BIT) @@ -251,8 +247,8 @@ st_bufferobj_map_range(GLcontext *ctx, GLenum target, map = obj->Pointer = pipe_buffer_map_range(pipe->screen, st_obj->buffer, offset, length, flags); if(obj->Pointer) { - obj->Offset = 0; - obj->Length = obj->Size; + obj->Offset = offset; + obj->Length = length; map += offset; } @@ -271,7 +267,6 @@ st_bufferobj_flush_mapped_range(GLcontext *ctx, GLenum target, /* Subrange is relative to mapped range */ assert(offset >= 0); assert(length >= 0); - assert(offset < obj->Length); assert(offset + length <= obj->Length); pipe_buffer_flush_mapped_range(pipe->screen, st_obj->buffer, @@ -296,6 +291,43 @@ st_bufferobj_unmap(GLcontext *ctx, GLenum target, struct gl_buffer_object *obj) } +/** + * Called via glCopyBufferSubData(). + */ +static void +st_copy_buffer_subdata(GLcontext *ctx, + struct gl_buffer_object *src, + struct gl_buffer_object *dst, + GLintptr readOffset, GLintptr writeOffset, + GLsizeiptr size) +{ + struct pipe_context *pipe = st_context(ctx)->pipe; + struct st_buffer_object *srcObj = st_buffer_object(src); + struct st_buffer_object *dstObj = st_buffer_object(dst); + ubyte *srcPtr, *dstPtr; + + /* buffer should not already be mapped */ + assert(!src->Pointer); + assert(!dst->Pointer); + + srcPtr = (ubyte *) pipe_buffer_map_range(pipe->screen, + srcObj->buffer, + readOffset, size, + PIPE_BUFFER_USAGE_CPU_READ); + + dstPtr = (ubyte *) pipe_buffer_map_range(pipe->screen, + dstObj->buffer, + writeOffset, size, + PIPE_BUFFER_USAGE_CPU_WRITE); + + if (srcPtr && dstPtr) + _mesa_memcpy(dstPtr + writeOffset, srcPtr + readOffset, size); + + pipe_buffer_unmap(pipe->screen, srcObj->buffer); + pipe_buffer_unmap(pipe->screen, dstObj->buffer); +} + + void st_init_bufferobject_functions(struct dd_function_table *functions) { @@ -308,6 +340,7 @@ st_init_bufferobject_functions(struct dd_function_table *functions) functions->MapBufferRange = st_bufferobj_map_range; functions->FlushMappedBufferRange = st_bufferobj_flush_mapped_range; functions->UnmapBuffer = st_bufferobj_unmap; + functions->CopyBufferSubData = st_copy_buffer_subdata; /* For GL_APPLE_vertex_array_object */ functions->NewArrayObject = _mesa_new_array_object; |