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For _mesa_share_state(), update the context's references to the new share group's objects (Shane Blackett)

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This commit is contained in:
Brian
2007-08-23 08:53:43 +01:00
parent dbef6158c6
commit 4b654d41da
9 changed files with 214 additions and 77 deletions
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170
src/mesa/main/bufferobj.c
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@@ -409,6 +409,101 @@ _mesa_init_buffer_objects( GLcontext *ctx )
ctx->Array.ElementArrayBufferObj = ctx->Array.NullBufferObj;
}
/**
* Bind the specified target to buffer for the specified context.
*/
static void
bind_buffer_object(GLcontext *ctx, GLenum target, GLuint buffer)
{
struct gl_buffer_object *oldBufObj;
struct gl_buffer_object *newBufObj = NULL;
struct gl_buffer_object **bindTarget = NULL;
switch (target) {
case GL_ARRAY_BUFFER_ARB:
bindTarget = &ctx->Array.ArrayBufferObj;
break;
case GL_ELEMENT_ARRAY_BUFFER_ARB:
bindTarget = &ctx->Array.ElementArrayBufferObj;
break;
case GL_PIXEL_PACK_BUFFER_EXT:
bindTarget = &ctx->Pack.BufferObj;
break;
case GL_PIXEL_UNPACK_BUFFER_EXT:
bindTarget = &ctx->Unpack.BufferObj;
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferARB(target)");
return;
}
/* Get pointer to old buffer object (to be unbound) */
oldBufObj = get_buffer(ctx, target);
if (oldBufObj && oldBufObj->Name == buffer)
return; /* rebinding the same buffer object- no change */
/*
* Get pointer to new buffer object (newBufObj)
*/
if (buffer == 0) {
/* The spec says there's not a buffer object named 0, but we use
* one internally because it simplifies things.
*/
newBufObj = ctx->Array.NullBufferObj;
}
else {
/* non-default buffer object */
newBufObj = _mesa_lookup_bufferobj(ctx, buffer);
if (!newBufObj) {
/* if this is a new buffer object id, allocate a buffer object now */
ASSERT(ctx->Driver.NewBufferObject);
newBufObj = ctx->Driver.NewBufferObject(ctx, buffer, target);
if (!newBufObj) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindBufferARB");
return;
}
_mesa_save_buffer_object(ctx, newBufObj);
}
}
/* Make new binding */
*bindTarget = newBufObj;
newBufObj->RefCount++;
/* Pass BindBuffer call to device driver */
if (ctx->Driver.BindBuffer && newBufObj)
ctx->Driver.BindBuffer( ctx, target, newBufObj );
/* decr ref count on old buffer obj, delete if needed */
if (oldBufObj) {
oldBufObj->RefCount--;
assert(oldBufObj->RefCount >= 0);
if (oldBufObj->RefCount == 0) {
assert(oldBufObj->Name != 0);
ASSERT(ctx->Driver.DeleteBuffer);
ctx->Driver.DeleteBuffer( ctx, oldBufObj );
}
}
}
/**
* Update the default buffer objects in the given context to reference those
* specified in the shared state and release those referencing the old
* shared state.
*/
void
_mesa_update_default_objects_buffer_objects(GLcontext *ctx)
{
/* Bind the NullBufferObj to remove references to those
* in the shared context hash table.
*/
bind_buffer_object( ctx, GL_ARRAY_BUFFER_ARB, 0);
bind_buffer_object( ctx, GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
bind_buffer_object( ctx, GL_PIXEL_PACK_BUFFER_ARB, 0);
bind_buffer_object( ctx, GL_PIXEL_UNPACK_BUFFER_ARB, 0);
}
/**
* When we're about to read pixel data out of a PBO (via glDrawPixels,
@@ -493,76 +588,9 @@ void GLAPIENTRY
_mesa_BindBufferARB(GLenum target, GLuint buffer)
{
GET_CURRENT_CONTEXT(ctx);
struct gl_buffer_object *oldBufObj;
struct gl_buffer_object *newBufObj = NULL;
struct gl_buffer_object **bindTarget = NULL;
ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (target) {
case GL_ARRAY_BUFFER_ARB:
bindTarget = &ctx->Array.ArrayBufferObj;
break;
case GL_ELEMENT_ARRAY_BUFFER_ARB:
bindTarget = &ctx->Array.ElementArrayBufferObj;
break;
case GL_PIXEL_PACK_BUFFER_EXT:
bindTarget = &ctx->Pack.BufferObj;
break;
case GL_PIXEL_UNPACK_BUFFER_EXT:
bindTarget = &ctx->Unpack.BufferObj;
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferARB(target)");
return;
}
/* Get pointer to old buffer object (to be unbound) */
oldBufObj = get_buffer(ctx, target);
if (oldBufObj && oldBufObj->Name == buffer)
return; /* rebinding the same buffer object- no change */
/*
* Get pointer to new buffer object (newBufObj)
*/
if (buffer == 0) {
/* The spec says there's not a buffer object named 0, but we use
* one internally because it simplifies things.
*/
newBufObj = ctx->Array.NullBufferObj;
}
else {
/* non-default buffer object */
newBufObj = _mesa_lookup_bufferobj(ctx, buffer);
if (!newBufObj) {
/* if this is a new buffer object id, allocate a buffer object now */
ASSERT(ctx->Driver.NewBufferObject);
newBufObj = ctx->Driver.NewBufferObject(ctx, buffer, target);
if (!newBufObj) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindBufferARB");
return;
}
_mesa_save_buffer_object(ctx, newBufObj);
}
}
/* Make new binding */
*bindTarget = newBufObj;
newBufObj->RefCount++;
/* Pass BindBuffer call to device driver */
if (ctx->Driver.BindBuffer && newBufObj)
ctx->Driver.BindBuffer( ctx, target, newBufObj );
/* decr ref count on old buffer obj, delete if needed */
if (oldBufObj) {
oldBufObj->RefCount--;
assert(oldBufObj->RefCount >= 0);
if (oldBufObj->RefCount == 0) {
assert(oldBufObj->Name != 0);
ASSERT(ctx->Driver.DeleteBuffer);
ctx->Driver.DeleteBuffer( ctx, oldBufObj );
}
}
bind_buffer_object(ctx, target, buffer);
}
@@ -658,9 +686,9 @@ _mesa_DeleteBuffersARB(GLsizei n, const GLuint *ids)
_mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT, 0 );
}
/* The ID is immediately freed for re-use */
_mesa_remove_buffer_object(ctx, bufObj);
_mesa_unbind_buffer_object(ctx, bufObj);
/* The ID is immediately freed for re-use */
_mesa_remove_buffer_object(ctx, bufObj);
_mesa_unbind_buffer_object(ctx, bufObj);
}
}