**************************************************************************/
+/**
+ * Functions for pixel buffer objects and vertex/element buffer objects.
+ */
+
+
#include "main/imports.h"
#include "main/mtypes.h"
+#include "main/arrayobj.h"
#include "main/bufferobj.h"
#include "st_inlines.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
-#include "pipe/p_inlines.h"
-
-
-
-/* Pixel buffers and Vertex/index buffers are handled through these
- * mesa callbacks. Framebuffer/Renderbuffer objects are
- * created/managed elsewhere.
- */
-
+#include "util/u_inlines.h"
/**
{
struct st_buffer_object *st_obj = st_buffer_object(obj);
+ assert(obj->RefCount == 0);
+
if (st_obj->buffer)
pipe_buffer_reference(&st_obj->buffer, NULL);
- _mesa_free(st_obj);
+ free(st_obj);
}
{
struct st_buffer_object *st_obj = st_buffer_object(obj);
- if (offset >= st_obj->size || size > (st_obj->size - offset))
+ /* we may be called from VBO code, so double-check params here */
+ ASSERT(offset >= 0);
+ ASSERT(size >= 0);
+ ASSERT(offset + size <= obj->Size);
+
+ if (!size)
+ return;
+
+ /*
+ * According to ARB_vertex_buffer_object specification, if data is null,
+ * then the contents of the buffer object's data store is undefined. We just
+ * ignore, and leave it unchanged.
+ */
+ if (!data)
return;
st_cond_flush_pipe_buffer_write(st_context(ctx), st_obj->buffer,
{
struct st_buffer_object *st_obj = st_buffer_object(obj);
- if (offset >= st_obj->size || size > (st_obj->size - offset))
+ /* we may be called from VBO code, so double-check params here */
+ ASSERT(offset >= 0);
+ ASSERT(size >= 0);
+ ASSERT(offset + size <= obj->Size);
+
+ if (!size)
return;
st_cond_flush_pipe_buffer_read(st_context(ctx), st_obj->buffer,
* Allocate space for and store data in a buffer object. Any data that was
* previously stored in the buffer object is lost. If data is NULL,
* memory will be allocated, but no copy will occur.
- * Called via glBufferDataARB().
+ * Called via ctx->Driver.BufferData().
+ * \return GL_TRUE for success, GL_FALSE if out of memory
*/
-static void
+static GLboolean
st_bufferobj_data(GLcontext *ctx,
GLenum target,
GLsizeiptrARB size,
pipe_buffer_reference( &st_obj->buffer, NULL );
- st_obj->buffer = pipe_buffer_create( pipe->screen, 32, buffer_usage, size );
+ if (size != 0) {
+ st_obj->buffer = pipe_buffer_create(pipe->screen, 32, buffer_usage, size);
- if (!st_obj->buffer) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBufferDataARB");
- return;
- }
+ if (!st_obj->buffer) {
+ return GL_FALSE;
+ }
- st_obj->size = size;
+ if (data)
+ st_no_flush_pipe_buffer_write(st_context(ctx), st_obj->buffer, 0,
+ size, data);
+ return GL_TRUE;
+ }
- if (data)
- st_no_flush_pipe_buffer_write(st_context(ctx), st_obj->buffer, 0,
- size, data);
+ return GL_TRUE;
}
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:
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;
}
}
+/**
+ * Dummy data whose's pointer is used for zero length ranges.
+ */
+static long
+st_bufferobj_zero_length_range = 0;
+
/**
* Called via glMapBufferRange().
{
struct pipe_context *pipe = st_context(ctx)->pipe;
struct st_buffer_object *st_obj = st_buffer_object(obj);
- GLuint flags = 0;
- char *map;
+ uint flags = 0x0;
if (access & GL_MAP_WRITE_BIT)
flags |= PIPE_BUFFER_USAGE_CPU_WRITE;
if (access & GL_MAP_READ_BIT)
flags |= PIPE_BUFFER_USAGE_CPU_READ;
+ if (access & GL_MAP_FLUSH_EXPLICIT_BIT)
+ flags |= PIPE_BUFFER_USAGE_FLUSH_EXPLICIT;
+
+ if (access & GL_MAP_UNSYNCHRONIZED_BIT)
+ flags |= PIPE_BUFFER_USAGE_UNSYNCHRONIZED;
+
/* ... other flags ...
*/
assert(offset < obj->Size);
assert(offset + length <= obj->Size);
- map = obj->Pointer = pipe_buffer_map_range(pipe->screen, st_obj->buffer, offset, length, flags);
- if(obj->Pointer) {
+ /*
+ * We go out of way here to hide the degenerate yet valid case of zero
+ * length range from the pipe driver.
+ */
+ if (!length) {
+ obj->Pointer = &st_bufferobj_zero_length_range;
+ }
+ else {
+ obj->Pointer = pipe_buffer_map_range(pipe->screen, st_obj->buffer, offset, length, flags);
+ if (obj->Pointer) {
+ obj->Pointer = (ubyte *) obj->Pointer + offset;
+ }
+ }
+
+ if (obj->Pointer) {
obj->Offset = offset;
obj->Length = length;
- map += offset;
+ obj->AccessFlags = access;
}
-
- return map;
+
+ return obj->Pointer;
}
assert(length >= 0);
assert(offset + length <= obj->Length);
+ if (!length)
+ return;
+
pipe_buffer_flush_mapped_range(pipe->screen, st_obj->buffer,
obj->Offset + offset, length);
}
struct pipe_context *pipe = st_context(ctx)->pipe;
struct st_buffer_object *st_obj = st_buffer_object(obj);
- pipe_buffer_unmap(pipe->screen, st_obj->buffer);
+ if(obj->Length)
+ pipe_buffer_unmap(pipe->screen, st_obj->buffer);
+
obj->Pointer = NULL;
obj->Offset = 0;
obj->Length = 0;
}
+/**
+ * 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;
+
+ if(!size)
+ return;
+
+ /* 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)
+ 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)
{
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;
+ functions->DeleteArrayObject = _mesa_delete_array_object;
}
projects / mesa.git / blobdiff