0,0 → 1,2143 |
/* |
* Mesa 3-D graphics library |
* Version: 7.6 |
* |
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved. |
* Copyright (C) 2009 VMware, Inc. All Rights Reserved. |
* |
* Permission is hereby granted, free of charge, to any person obtaining a |
* copy of this software and associated documentation files (the "Software"), |
* to deal in the Software without restriction, including without limitation |
* the rights to use, copy, modify, merge, publish, distribute, sublicense, |
* and/or sell copies of the Software, and to permit persons to whom the |
* Software is furnished to do so, subject to the following conditions: |
* |
* The above copyright notice and this permission notice shall be included |
* in all copies or substantial portions of the Software. |
* |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
*/ |
|
|
/** |
* \file bufferobj.c |
* \brief Functions for the GL_ARB_vertex/pixel_buffer_object extensions. |
* \author Brian Paul, Ian Romanick |
*/ |
|
|
#include "glheader.h" |
#include "enums.h" |
#include "hash.h" |
#include "imports.h" |
#include "image.h" |
#include "context.h" |
#include "bufferobj.h" |
#include "fbobject.h" |
#include "texobj.h" |
|
|
/* Debug flags */ |
/*#define VBO_DEBUG*/ |
/*#define BOUNDS_CHECK*/ |
|
|
#if FEATURE_OES_mapbuffer |
#define DEFAULT_ACCESS GL_MAP_WRITE_BIT |
#else |
#define DEFAULT_ACCESS (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT) |
#endif |
|
|
/** |
* Used as a placeholder for buffer objects between glGenBuffers() and |
* glBindBuffer() so that glIsBuffer() can work correctly. |
*/ |
static struct gl_buffer_object DummyBufferObject; |
|
|
/** |
* Return pointer to address of a buffer object target. |
* \param ctx the GL context |
* \param target the buffer object target to be retrieved. |
* \return pointer to pointer to the buffer object bound to \c target in the |
* specified context or \c NULL if \c target is invalid. |
*/ |
static INLINE struct gl_buffer_object ** |
get_buffer_target(struct gl_context *ctx, GLenum target) |
{ |
switch (target) { |
case GL_ARRAY_BUFFER_ARB: |
return &ctx->Array.ArrayBufferObj; |
case GL_ELEMENT_ARRAY_BUFFER_ARB: |
return &ctx->Array.ElementArrayBufferObj; |
case GL_PIXEL_PACK_BUFFER_EXT: |
return &ctx->Pack.BufferObj; |
case GL_PIXEL_UNPACK_BUFFER_EXT: |
return &ctx->Unpack.BufferObj; |
case GL_COPY_READ_BUFFER: |
return &ctx->CopyReadBuffer; |
case GL_COPY_WRITE_BUFFER: |
return &ctx->CopyWriteBuffer; |
#if FEATURE_EXT_transform_feedback |
case GL_TRANSFORM_FEEDBACK_BUFFER: |
if (ctx->Extensions.EXT_transform_feedback) { |
return &ctx->TransformFeedback.CurrentBuffer; |
} |
break; |
#endif |
default: |
return NULL; |
} |
return NULL; |
} |
|
|
/** |
* Get the buffer object bound to the specified target in a GL context. |
* \param ctx the GL context |
* \param target the buffer object target to be retrieved. |
* \return pointer to the buffer object bound to \c target in the |
* specified context or \c NULL if \c target is invalid. |
*/ |
static INLINE struct gl_buffer_object * |
get_buffer(struct gl_context *ctx, GLenum target) |
{ |
struct gl_buffer_object **bufObj = get_buffer_target(ctx, target); |
if (bufObj) |
return *bufObj; |
return NULL; |
} |
|
|
/** |
* Convert a GLbitfield describing the mapped buffer access flags |
* into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY. |
*/ |
static GLenum |
simplified_access_mode(GLbitfield access) |
{ |
const GLbitfield rwFlags = GL_MAP_READ_BIT | GL_MAP_WRITE_BIT; |
if ((access & rwFlags) == rwFlags) |
return GL_READ_WRITE; |
if ((access & GL_MAP_READ_BIT) == GL_MAP_READ_BIT) |
return GL_READ_ONLY; |
if ((access & GL_MAP_WRITE_BIT) == GL_MAP_WRITE_BIT) |
return GL_WRITE_ONLY; |
return GL_READ_WRITE; /* this should never happen, but no big deal */ |
} |
|
|
/** |
* Tests the subdata range parameters and sets the GL error code for |
* \c glBufferSubDataARB and \c glGetBufferSubDataARB. |
* |
* \param ctx GL context. |
* \param target Buffer object target on which to operate. |
* \param offset Offset of the first byte of the subdata range. |
* \param size Size, in bytes, of the subdata range. |
* \param caller Name of calling function for recording errors. |
* \return A pointer to the buffer object bound to \c target in the |
* specified context or \c NULL if any of the parameter or state |
* conditions for \c glBufferSubDataARB or \c glGetBufferSubDataARB |
* are invalid. |
* |
* \sa glBufferSubDataARB, glGetBufferSubDataARB |
*/ |
static struct gl_buffer_object * |
buffer_object_subdata_range_good( struct gl_context * ctx, GLenum target, |
GLintptrARB offset, GLsizeiptrARB size, |
const char *caller ) |
{ |
struct gl_buffer_object *bufObj; |
|
if (size < 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, "%s(size < 0)", caller); |
return NULL; |
} |
|
if (offset < 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, "%s(offset < 0)", caller); |
return NULL; |
} |
|
bufObj = get_buffer(ctx, target); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", caller); |
return NULL; |
} |
if (!_mesa_is_bufferobj(bufObj)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller); |
return NULL; |
} |
if (offset + size > bufObj->Size) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"%s(size + offset > buffer size)", caller); |
return NULL; |
} |
if (_mesa_bufferobj_mapped(bufObj)) { |
/* Buffer is currently mapped */ |
_mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller); |
return NULL; |
} |
|
return bufObj; |
} |
|
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/** |
* Allocate and initialize a new buffer object. |
* |
* Default callback for the \c dd_function_table::NewBufferObject() hook. |
*/ |
static struct gl_buffer_object * |
_mesa_new_buffer_object( struct gl_context *ctx, GLuint name, GLenum target ) |
{ |
struct gl_buffer_object *obj; |
|
(void) ctx; |
|
obj = MALLOC_STRUCT(gl_buffer_object); |
_mesa_initialize_buffer_object(obj, name, target); |
return obj; |
} |
|
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/** |
* Delete a buffer object. |
* |
* Default callback for the \c dd_function_table::DeleteBuffer() hook. |
*/ |
static void |
_mesa_delete_buffer_object( struct gl_context *ctx, struct gl_buffer_object *bufObj ) |
{ |
(void) ctx; |
|
if (bufObj->Data) |
free(bufObj->Data); |
|
/* assign strange values here to help w/ debugging */ |
bufObj->RefCount = -1000; |
bufObj->Name = ~0; |
|
_glthread_DESTROY_MUTEX(bufObj->Mutex); |
free(bufObj); |
} |
|
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/** |
* Set ptr to bufObj w/ reference counting. |
*/ |
void |
_mesa_reference_buffer_object(struct gl_context *ctx, |
struct gl_buffer_object **ptr, |
struct gl_buffer_object *bufObj) |
{ |
if (*ptr == bufObj) |
return; |
|
if (*ptr) { |
/* Unreference the old buffer */ |
GLboolean deleteFlag = GL_FALSE; |
struct gl_buffer_object *oldObj = *ptr; |
|
_glthread_LOCK_MUTEX(oldObj->Mutex); |
ASSERT(oldObj->RefCount > 0); |
oldObj->RefCount--; |
#if 0 |
printf("BufferObj %p %d DECR to %d\n", |
(void *) oldObj, oldObj->Name, oldObj->RefCount); |
#endif |
deleteFlag = (oldObj->RefCount == 0); |
_glthread_UNLOCK_MUTEX(oldObj->Mutex); |
|
if (deleteFlag) { |
|
/* some sanity checking: don't delete a buffer still in use */ |
#if 0 |
/* unfortunately, these tests are invalid during context tear-down */ |
ASSERT(ctx->Array.ArrayBufferObj != bufObj); |
ASSERT(ctx->Array.ElementArrayBufferObj != bufObj); |
ASSERT(ctx->Array.ArrayObj->Vertex.BufferObj != bufObj); |
#endif |
|
ASSERT(ctx->Driver.DeleteBuffer); |
ctx->Driver.DeleteBuffer(ctx, oldObj); |
} |
|
*ptr = NULL; |
} |
ASSERT(!*ptr); |
|
if (bufObj) { |
/* reference new buffer */ |
_glthread_LOCK_MUTEX(bufObj->Mutex); |
if (bufObj->RefCount == 0) { |
/* this buffer's being deleted (look just above) */ |
/* Not sure this can every really happen. Warn if it does. */ |
_mesa_problem(NULL, "referencing deleted buffer object"); |
*ptr = NULL; |
} |
else { |
bufObj->RefCount++; |
#if 0 |
printf("BufferObj %p %d INCR to %d\n", |
(void *) bufObj, bufObj->Name, bufObj->RefCount); |
#endif |
*ptr = bufObj; |
} |
_glthread_UNLOCK_MUTEX(bufObj->Mutex); |
} |
} |
|
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/** |
* Initialize a buffer object to default values. |
*/ |
void |
_mesa_initialize_buffer_object( struct gl_buffer_object *obj, |
GLuint name, GLenum target ) |
{ |
(void) target; |
|
memset(obj, 0, sizeof(struct gl_buffer_object)); |
_glthread_INIT_MUTEX(obj->Mutex); |
obj->RefCount = 1; |
obj->Name = name; |
obj->Usage = GL_STATIC_DRAW_ARB; |
obj->AccessFlags = DEFAULT_ACCESS; |
} |
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/** |
* Allocate space for and store data in a buffer object. Any data that was |
* previously stored in the buffer object is lost. If \c data is \c NULL, |
* memory will be allocated, but no copy will occur. |
* |
* This is the default callback for \c dd_function_table::BufferData() |
* Note that all GL error checking will have been done already. |
* |
* \param ctx GL context. |
* \param target Buffer object target on which to operate. |
* \param size Size, in bytes, of the new data store. |
* \param data Pointer to the data to store in the buffer object. This |
* pointer may be \c NULL. |
* \param usage Hints about how the data will be used. |
* \param bufObj Object to be used. |
* |
* \return GL_TRUE for success, GL_FALSE for failure |
* \sa glBufferDataARB, dd_function_table::BufferData. |
*/ |
static GLboolean |
_mesa_buffer_data( struct gl_context *ctx, GLenum target, GLsizeiptrARB size, |
const GLvoid * data, GLenum usage, |
struct gl_buffer_object * bufObj ) |
{ |
void * new_data; |
|
(void) ctx; (void) target; |
|
new_data = _mesa_realloc( bufObj->Data, bufObj->Size, size ); |
if (new_data) { |
bufObj->Data = (GLubyte *) new_data; |
bufObj->Size = size; |
bufObj->Usage = usage; |
|
if (data) { |
memcpy( bufObj->Data, data, size ); |
} |
|
return GL_TRUE; |
} |
else { |
return GL_FALSE; |
} |
} |
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/** |
* Replace data in a subrange of buffer object. If the data range |
* specified by \c size + \c offset extends beyond the end of the buffer or |
* if \c data is \c NULL, no copy is performed. |
* |
* This is the default callback for \c dd_function_table::BufferSubData() |
* Note that all GL error checking will have been done already. |
* |
* \param ctx GL context. |
* \param target Buffer object target on which to operate. |
* \param offset Offset of the first byte to be modified. |
* \param size Size, in bytes, of the data range. |
* \param data Pointer to the data to store in the buffer object. |
* \param bufObj Object to be used. |
* |
* \sa glBufferSubDataARB, dd_function_table::BufferSubData. |
*/ |
static void |
_mesa_buffer_subdata( struct gl_context *ctx, GLenum target, GLintptrARB offset, |
GLsizeiptrARB size, const GLvoid * data, |
struct gl_buffer_object * bufObj ) |
{ |
(void) ctx; (void) target; |
|
/* this should have been caught in _mesa_BufferSubData() */ |
ASSERT(size + offset <= bufObj->Size); |
|
if (bufObj->Data) { |
memcpy( (GLubyte *) bufObj->Data + offset, data, size ); |
} |
} |
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/** |
* Retrieve data from a subrange of buffer object. If the data range |
* specified by \c size + \c offset extends beyond the end of the buffer or |
* if \c data is \c NULL, no copy is performed. |
* |
* This is the default callback for \c dd_function_table::GetBufferSubData() |
* Note that all GL error checking will have been done already. |
* |
* \param ctx GL context. |
* \param target Buffer object target on which to operate. |
* \param offset Offset of the first byte to be fetched. |
* \param size Size, in bytes, of the data range. |
* \param data Destination for data |
* \param bufObj Object to be used. |
* |
* \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData. |
*/ |
static void |
_mesa_buffer_get_subdata( struct gl_context *ctx, GLenum target, GLintptrARB offset, |
GLsizeiptrARB size, GLvoid * data, |
struct gl_buffer_object * bufObj ) |
{ |
(void) ctx; (void) target; |
|
if (bufObj->Data && ((GLsizeiptrARB) (size + offset) <= bufObj->Size)) { |
memcpy( data, (GLubyte *) bufObj->Data + offset, size ); |
} |
} |
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/** |
* Default callback for \c dd_function_tabel::MapBuffer(). |
* |
* The function parameters will have been already tested for errors. |
* |
* \param ctx GL context. |
* \param target Buffer object target on which to operate. |
* \param access Information about how the buffer will be accessed. |
* \param bufObj Object to be mapped. |
* \return A pointer to the object's internal data store that can be accessed |
* by the processor |
* |
* \sa glMapBufferARB, dd_function_table::MapBuffer |
*/ |
static void * |
_mesa_buffer_map( struct gl_context *ctx, GLenum target, GLenum access, |
struct gl_buffer_object *bufObj ) |
{ |
(void) ctx; |
(void) target; |
(void) access; |
/* Just return a direct pointer to the data */ |
if (_mesa_bufferobj_mapped(bufObj)) { |
/* already mapped! */ |
return NULL; |
} |
bufObj->Pointer = bufObj->Data; |
bufObj->Length = bufObj->Size; |
bufObj->Offset = 0; |
return bufObj->Pointer; |
} |
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/** |
* Default fallback for \c dd_function_table::MapBufferRange(). |
* Called via glMapBufferRange(). |
*/ |
static void * |
_mesa_buffer_map_range( struct gl_context *ctx, GLenum target, GLintptr offset, |
GLsizeiptr length, GLbitfield access, |
struct gl_buffer_object *bufObj ) |
{ |
(void) ctx; |
(void) target; |
assert(!_mesa_bufferobj_mapped(bufObj)); |
/* Just return a direct pointer to the data */ |
bufObj->Pointer = bufObj->Data + offset; |
bufObj->Length = length; |
bufObj->Offset = offset; |
bufObj->AccessFlags = access; |
return bufObj->Pointer; |
} |
|
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/** |
* Default fallback for \c dd_function_table::FlushMappedBufferRange(). |
* Called via glFlushMappedBufferRange(). |
*/ |
static void |
_mesa_buffer_flush_mapped_range( struct gl_context *ctx, GLenum target, |
GLintptr offset, GLsizeiptr length, |
struct gl_buffer_object *obj ) |
{ |
(void) ctx; |
(void) target; |
(void) offset; |
(void) length; |
(void) obj; |
/* no-op */ |
} |
|
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/** |
* Default callback for \c dd_function_table::MapBuffer(). |
* |
* The input parameters will have been already tested for errors. |
* |
* \sa glUnmapBufferARB, dd_function_table::UnmapBuffer |
*/ |
static GLboolean |
_mesa_buffer_unmap( struct gl_context *ctx, GLenum target, |
struct gl_buffer_object *bufObj ) |
{ |
(void) ctx; |
(void) target; |
/* XXX we might assert here that bufObj->Pointer is non-null */ |
bufObj->Pointer = NULL; |
bufObj->Length = 0; |
bufObj->Offset = 0; |
bufObj->AccessFlags = 0x0; |
return GL_TRUE; |
} |
|
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/** |
* Default fallback for \c dd_function_table::CopyBufferSubData(). |
* Called via glCopyBuffserSubData(). |
*/ |
static void |
_mesa_copy_buffer_subdata(struct gl_context *ctx, |
struct gl_buffer_object *src, |
struct gl_buffer_object *dst, |
GLintptr readOffset, GLintptr writeOffset, |
GLsizeiptr size) |
{ |
GLubyte *srcPtr, *dstPtr; |
|
/* buffer should not already be mapped */ |
assert(!_mesa_bufferobj_mapped(src)); |
assert(!_mesa_bufferobj_mapped(dst)); |
|
srcPtr = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_COPY_READ_BUFFER, |
GL_READ_ONLY, src); |
dstPtr = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_COPY_WRITE_BUFFER, |
GL_WRITE_ONLY, dst); |
|
if (srcPtr && dstPtr) |
memcpy(dstPtr + writeOffset, srcPtr + readOffset, size); |
|
ctx->Driver.UnmapBuffer(ctx, GL_COPY_READ_BUFFER, src); |
ctx->Driver.UnmapBuffer(ctx, GL_COPY_WRITE_BUFFER, dst); |
} |
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/** |
* Initialize the state associated with buffer objects |
*/ |
void |
_mesa_init_buffer_objects( struct gl_context *ctx ) |
{ |
memset(&DummyBufferObject, 0, sizeof(DummyBufferObject)); |
DummyBufferObject.RefCount = 1000*1000*1000; /* never delete */ |
|
_mesa_reference_buffer_object(ctx, &ctx->Array.ArrayBufferObj, |
ctx->Shared->NullBufferObj); |
_mesa_reference_buffer_object(ctx, &ctx->Array.ElementArrayBufferObj, |
ctx->Shared->NullBufferObj); |
|
_mesa_reference_buffer_object(ctx, &ctx->CopyReadBuffer, |
ctx->Shared->NullBufferObj); |
_mesa_reference_buffer_object(ctx, &ctx->CopyWriteBuffer, |
ctx->Shared->NullBufferObj); |
} |
|
|
void |
_mesa_free_buffer_objects( struct gl_context *ctx ) |
{ |
_mesa_reference_buffer_object(ctx, &ctx->Array.ArrayBufferObj, NULL); |
_mesa_reference_buffer_object(ctx, &ctx->Array.ElementArrayBufferObj, NULL); |
|
_mesa_reference_buffer_object(ctx, &ctx->CopyReadBuffer, NULL); |
_mesa_reference_buffer_object(ctx, &ctx->CopyWriteBuffer, NULL); |
} |
|
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/** |
* Bind the specified target to buffer for the specified context. |
* Called by glBindBuffer() and other functions. |
*/ |
static void |
bind_buffer_object(struct gl_context *ctx, GLenum target, GLuint buffer) |
{ |
struct gl_buffer_object *oldBufObj; |
struct gl_buffer_object *newBufObj = NULL; |
struct gl_buffer_object **bindTarget = NULL; |
|
bindTarget = get_buffer_target(ctx, target); |
if (!bindTarget) { |
_mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferARB(target 0x%x)", target); |
return; |
} |
|
/* Get pointer to old buffer object (to be unbound) */ |
oldBufObj = *bindTarget; |
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->Shared->NullBufferObj; |
} |
else { |
/* non-default buffer object */ |
newBufObj = _mesa_lookup_bufferobj(ctx, buffer); |
if (!newBufObj || newBufObj == &DummyBufferObject) { |
/* If this is a new buffer object id, or one which was generated but |
* never used before, 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_HashInsert(ctx->Shared->BufferObjects, buffer, newBufObj); |
} |
} |
|
/* bind new buffer */ |
_mesa_reference_buffer_object(ctx, bindTarget, newBufObj); |
|
/* Pass BindBuffer call to device driver */ |
if (ctx->Driver.BindBuffer) |
ctx->Driver.BindBuffer( ctx, target, newBufObj ); |
} |
|
|
/** |
* 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(struct gl_context *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, |
* glTexImage, etc) or write data into a PBO (via glReadPixels, |
* glGetTexImage, etc) we call this function to check that we're not |
* going to read out of bounds. |
* |
* XXX This would also be a convenient time to check that the PBO isn't |
* currently mapped. Whoever calls this function should check for that. |
* Remember, we can't use a PBO when it's mapped! |
* |
* If we're not using a PBO, this is a no-op. |
* |
* \param width width of image to read/write |
* \param height height of image to read/write |
* \param depth depth of image to read/write |
* \param format format of image to read/write |
* \param type datatype of image to read/write |
* \param ptr the user-provided pointer/offset |
* \return GL_TRUE if the PBO access is OK, GL_FALSE if the access would |
* go out of bounds. |
*/ |
GLboolean |
_mesa_validate_pbo_access(GLuint dimensions, |
const struct gl_pixelstore_attrib *pack, |
GLsizei width, GLsizei height, GLsizei depth, |
GLenum format, GLenum type, const GLvoid *ptr) |
{ |
GLvoid *start, *end; |
const GLubyte *sizeAddr; /* buffer size, cast to a pointer */ |
|
if (!_mesa_is_bufferobj(pack->BufferObj)) |
return GL_TRUE; /* no PBO, OK */ |
|
if (pack->BufferObj->Size == 0) |
/* no buffer! */ |
return GL_FALSE; |
|
/* get address of first pixel we'll read */ |
start = _mesa_image_address(dimensions, pack, ptr, width, height, |
format, type, 0, 0, 0); |
|
/* get address just past the last pixel we'll read */ |
end = _mesa_image_address(dimensions, pack, ptr, width, height, |
format, type, depth-1, height-1, width); |
|
|
sizeAddr = ((const GLubyte *) 0) + pack->BufferObj->Size; |
|
if ((const GLubyte *) start > sizeAddr) { |
/* This will catch negative values / wrap-around */ |
return GL_FALSE; |
} |
if ((const GLubyte *) end > sizeAddr) { |
/* Image read goes beyond end of buffer */ |
return GL_FALSE; |
} |
|
/* OK! */ |
return GL_TRUE; |
} |
|
|
/** |
* For commands that read from a PBO (glDrawPixels, glTexImage, |
* glPolygonStipple, etc), if we're reading from a PBO, map it read-only |
* and return the pointer into the PBO. If we're not reading from a |
* PBO, return \p src as-is. |
* If non-null return, must call _mesa_unmap_pbo_source() when done. |
* |
* \return NULL if error, else pointer to start of data |
*/ |
const GLvoid * |
_mesa_map_pbo_source(struct gl_context *ctx, |
const struct gl_pixelstore_attrib *unpack, |
const GLvoid *src) |
{ |
const GLubyte *buf; |
|
if (_mesa_is_bufferobj(unpack->BufferObj)) { |
/* unpack from PBO */ |
buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
GL_READ_ONLY_ARB, |
unpack->BufferObj); |
if (!buf) |
return NULL; |
|
buf = ADD_POINTERS(buf, src); |
} |
else { |
/* unpack from normal memory */ |
buf = src; |
} |
|
return buf; |
} |
|
|
/** |
* Combine PBO-read validation and mapping. |
* If any GL errors are detected, they'll be recorded and NULL returned. |
* \sa _mesa_validate_pbo_access |
* \sa _mesa_map_pbo_source |
* A call to this function should have a matching call to |
* _mesa_unmap_pbo_source(). |
*/ |
const GLvoid * |
_mesa_map_validate_pbo_source(struct gl_context *ctx, |
GLuint dimensions, |
const struct gl_pixelstore_attrib *unpack, |
GLsizei width, GLsizei height, GLsizei depth, |
GLenum format, GLenum type, const GLvoid *ptr, |
const char *where) |
{ |
ASSERT(dimensions == 1 || dimensions == 2 || dimensions == 3); |
|
if (!_mesa_is_bufferobj(unpack->BufferObj)) { |
/* non-PBO access: no validation to be done */ |
return ptr; |
} |
|
if (!_mesa_validate_pbo_access(dimensions, unpack, |
width, height, depth, format, type, ptr)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"%s(out of bounds PBO access)", where); |
return NULL; |
} |
|
if (_mesa_bufferobj_mapped(unpack->BufferObj)) { |
/* buffer is already mapped - that's an error */ |
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where); |
return NULL; |
} |
|
ptr = _mesa_map_pbo_source(ctx, unpack, ptr); |
return ptr; |
} |
|
|
/** |
* Counterpart to _mesa_map_pbo_source() |
*/ |
void |
_mesa_unmap_pbo_source(struct gl_context *ctx, |
const struct gl_pixelstore_attrib *unpack) |
{ |
ASSERT(unpack != &ctx->Pack); /* catch pack/unpack mismatch */ |
if (_mesa_is_bufferobj(unpack->BufferObj)) { |
ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
unpack->BufferObj); |
} |
} |
|
|
/** |
* For commands that write to a PBO (glReadPixels, glGetColorTable, etc), |
* if we're writing to a PBO, map it write-only and return the pointer |
* into the PBO. If we're not writing to a PBO, return \p dst as-is. |
* If non-null return, must call _mesa_unmap_pbo_dest() when done. |
* |
* \return NULL if error, else pointer to start of data |
*/ |
void * |
_mesa_map_pbo_dest(struct gl_context *ctx, |
const struct gl_pixelstore_attrib *pack, |
GLvoid *dest) |
{ |
void *buf; |
|
if (_mesa_is_bufferobj(pack->BufferObj)) { |
/* pack into PBO */ |
buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, |
GL_WRITE_ONLY_ARB, |
pack->BufferObj); |
if (!buf) |
return NULL; |
|
buf = ADD_POINTERS(buf, dest); |
} |
else { |
/* pack to normal memory */ |
buf = dest; |
} |
|
return buf; |
} |
|
|
/** |
* Combine PBO-write validation and mapping. |
* If any GL errors are detected, they'll be recorded and NULL returned. |
* \sa _mesa_validate_pbo_access |
* \sa _mesa_map_pbo_dest |
* A call to this function should have a matching call to |
* _mesa_unmap_pbo_dest(). |
*/ |
GLvoid * |
_mesa_map_validate_pbo_dest(struct gl_context *ctx, |
GLuint dimensions, |
const struct gl_pixelstore_attrib *unpack, |
GLsizei width, GLsizei height, GLsizei depth, |
GLenum format, GLenum type, GLvoid *ptr, |
const char *where) |
{ |
ASSERT(dimensions == 1 || dimensions == 2 || dimensions == 3); |
|
if (!_mesa_is_bufferobj(unpack->BufferObj)) { |
/* non-PBO access: no validation to be done */ |
return ptr; |
} |
|
if (!_mesa_validate_pbo_access(dimensions, unpack, |
width, height, depth, format, type, ptr)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"%s(out of bounds PBO access)", where); |
return NULL; |
} |
|
if (_mesa_bufferobj_mapped(unpack->BufferObj)) { |
/* buffer is already mapped - that's an error */ |
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where); |
return NULL; |
} |
|
ptr = _mesa_map_pbo_dest(ctx, unpack, ptr); |
return ptr; |
} |
|
|
/** |
* Counterpart to _mesa_map_pbo_dest() |
*/ |
void |
_mesa_unmap_pbo_dest(struct gl_context *ctx, |
const struct gl_pixelstore_attrib *pack) |
{ |
ASSERT(pack != &ctx->Unpack); /* catch pack/unpack mismatch */ |
if (_mesa_is_bufferobj(pack->BufferObj)) { |
ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, pack->BufferObj); |
} |
} |
|
|
|
/** |
* Return the gl_buffer_object for the given ID. |
* Always return NULL for ID 0. |
*/ |
struct gl_buffer_object * |
_mesa_lookup_bufferobj(struct gl_context *ctx, GLuint buffer) |
{ |
if (buffer == 0) |
return NULL; |
else |
return (struct gl_buffer_object *) |
_mesa_HashLookup(ctx->Shared->BufferObjects, buffer); |
} |
|
|
/** |
* If *ptr points to obj, set ptr = the Null/default buffer object. |
* This is a helper for buffer object deletion. |
* The GL spec says that deleting a buffer object causes it to get |
* unbound from all arrays in the current context. |
*/ |
static void |
unbind(struct gl_context *ctx, |
struct gl_buffer_object **ptr, |
struct gl_buffer_object *obj) |
{ |
if (*ptr == obj) { |
_mesa_reference_buffer_object(ctx, ptr, ctx->Shared->NullBufferObj); |
} |
} |
|
|
/** |
* Plug default/fallback buffer object functions into the device |
* driver hooks. |
*/ |
void |
_mesa_init_buffer_object_functions(struct dd_function_table *driver) |
{ |
/* GL_ARB_vertex/pixel_buffer_object */ |
driver->NewBufferObject = _mesa_new_buffer_object; |
driver->DeleteBuffer = _mesa_delete_buffer_object; |
driver->BindBuffer = NULL; |
driver->BufferData = _mesa_buffer_data; |
driver->BufferSubData = _mesa_buffer_subdata; |
driver->GetBufferSubData = _mesa_buffer_get_subdata; |
driver->MapBuffer = _mesa_buffer_map; |
driver->UnmapBuffer = _mesa_buffer_unmap; |
|
/* GL_ARB_map_buffer_range */ |
driver->MapBufferRange = _mesa_buffer_map_range; |
driver->FlushMappedBufferRange = _mesa_buffer_flush_mapped_range; |
|
/* GL_ARB_copy_buffer */ |
driver->CopyBufferSubData = _mesa_copy_buffer_subdata; |
} |
|
|
|
/**********************************************************************/ |
/* API Functions */ |
/**********************************************************************/ |
|
void GLAPIENTRY |
_mesa_BindBufferARB(GLenum target, GLuint buffer) |
{ |
GET_CURRENT_CONTEXT(ctx); |
ASSERT_OUTSIDE_BEGIN_END(ctx); |
|
bind_buffer_object(ctx, target, buffer); |
} |
|
|
/** |
* Delete a set of buffer objects. |
* |
* \param n Number of buffer objects to delete. |
* \param ids Array of \c n buffer object IDs. |
*/ |
void GLAPIENTRY |
_mesa_DeleteBuffersARB(GLsizei n, const GLuint *ids) |
{ |
GET_CURRENT_CONTEXT(ctx); |
GLsizei i; |
ASSERT_OUTSIDE_BEGIN_END(ctx); |
|
if (n < 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, "glDeleteBuffersARB(n)"); |
return; |
} |
|
_glthread_LOCK_MUTEX(ctx->Shared->Mutex); |
|
for (i = 0; i < n; i++) { |
struct gl_buffer_object *bufObj = _mesa_lookup_bufferobj(ctx, ids[i]); |
if (bufObj) { |
struct gl_array_object *arrayObj = ctx->Array.ArrayObj; |
GLuint j; |
|
ASSERT(bufObj->Name == ids[i] || bufObj == &DummyBufferObject); |
|
if (_mesa_bufferobj_mapped(bufObj)) { |
/* if mapped, unmap it now */ |
ctx->Driver.UnmapBuffer(ctx, 0, bufObj); |
bufObj->AccessFlags = DEFAULT_ACCESS; |
bufObj->Pointer = NULL; |
} |
|
/* unbind any vertex pointers bound to this buffer */ |
unbind(ctx, &arrayObj->Vertex.BufferObj, bufObj); |
unbind(ctx, &arrayObj->Weight.BufferObj, bufObj); |
unbind(ctx, &arrayObj->Normal.BufferObj, bufObj); |
unbind(ctx, &arrayObj->Color.BufferObj, bufObj); |
unbind(ctx, &arrayObj->SecondaryColor.BufferObj, bufObj); |
unbind(ctx, &arrayObj->FogCoord.BufferObj, bufObj); |
unbind(ctx, &arrayObj->Index.BufferObj, bufObj); |
unbind(ctx, &arrayObj->EdgeFlag.BufferObj, bufObj); |
for (j = 0; j < Elements(arrayObj->TexCoord); j++) { |
unbind(ctx, &arrayObj->TexCoord[j].BufferObj, bufObj); |
} |
for (j = 0; j < Elements(arrayObj->VertexAttrib); j++) { |
unbind(ctx, &arrayObj->VertexAttrib[j].BufferObj, bufObj); |
} |
|
if (ctx->Array.ArrayBufferObj == bufObj) { |
_mesa_BindBufferARB( GL_ARRAY_BUFFER_ARB, 0 ); |
} |
if (ctx->Array.ElementArrayBufferObj == bufObj) { |
_mesa_BindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, 0 ); |
} |
|
/* unbind any pixel pack/unpack pointers bound to this buffer */ |
if (ctx->Pack.BufferObj == bufObj) { |
_mesa_BindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, 0 ); |
} |
if (ctx->Unpack.BufferObj == bufObj) { |
_mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT, 0 ); |
} |
|
/* The ID is immediately freed for re-use */ |
_mesa_HashRemove(ctx->Shared->BufferObjects, ids[i]); |
_mesa_reference_buffer_object(ctx, &bufObj, NULL); |
} |
} |
|
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); |
} |
|
|
/** |
* Generate a set of unique buffer object IDs and store them in \c buffer. |
* |
* \param n Number of IDs to generate. |
* \param buffer Array of \c n locations to store the IDs. |
*/ |
void GLAPIENTRY |
_mesa_GenBuffersARB(GLsizei n, GLuint *buffer) |
{ |
GET_CURRENT_CONTEXT(ctx); |
GLuint first; |
GLint i; |
ASSERT_OUTSIDE_BEGIN_END(ctx); |
|
if (n < 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, "glGenBuffersARB"); |
return; |
} |
|
if (!buffer) { |
return; |
} |
|
/* |
* This must be atomic (generation and allocation of buffer object IDs) |
*/ |
_glthread_LOCK_MUTEX(ctx->Shared->Mutex); |
|
first = _mesa_HashFindFreeKeyBlock(ctx->Shared->BufferObjects, n); |
|
/* Insert the ID and pointer to dummy buffer object into hash table */ |
for (i = 0; i < n; i++) { |
_mesa_HashInsert(ctx->Shared->BufferObjects, first + i, |
&DummyBufferObject); |
buffer[i] = first + i; |
} |
|
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); |
} |
|
|
/** |
* Determine if ID is the name of a buffer object. |
* |
* \param id ID of the potential buffer object. |
* \return \c GL_TRUE if \c id is the name of a buffer object, |
* \c GL_FALSE otherwise. |
*/ |
GLboolean GLAPIENTRY |
_mesa_IsBufferARB(GLuint id) |
{ |
struct gl_buffer_object *bufObj; |
GET_CURRENT_CONTEXT(ctx); |
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); |
|
_glthread_LOCK_MUTEX(ctx->Shared->Mutex); |
bufObj = _mesa_lookup_bufferobj(ctx, id); |
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); |
|
return bufObj && bufObj != &DummyBufferObject; |
} |
|
|
void GLAPIENTRY |
_mesa_BufferDataARB(GLenum target, GLsizeiptrARB size, |
const GLvoid * data, GLenum usage) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_buffer_object *bufObj; |
ASSERT_OUTSIDE_BEGIN_END(ctx); |
|
if (size < 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, "glBufferDataARB(size < 0)"); |
return; |
} |
|
switch (usage) { |
case GL_STREAM_DRAW_ARB: |
case GL_STREAM_READ_ARB: |
case GL_STREAM_COPY_ARB: |
case GL_STATIC_DRAW_ARB: |
case GL_STATIC_READ_ARB: |
case GL_STATIC_COPY_ARB: |
case GL_DYNAMIC_DRAW_ARB: |
case GL_DYNAMIC_READ_ARB: |
case GL_DYNAMIC_COPY_ARB: |
/* OK */ |
break; |
default: |
_mesa_error(ctx, GL_INVALID_ENUM, "glBufferDataARB(usage)"); |
return; |
} |
|
bufObj = get_buffer(ctx, target); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_ENUM, "glBufferDataARB(target)" ); |
return; |
} |
if (!_mesa_is_bufferobj(bufObj)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, "glBufferDataARB(buffer 0)" ); |
return; |
} |
|
if (_mesa_bufferobj_mapped(bufObj)) { |
/* Unmap the existing buffer. We'll replace it now. Not an error. */ |
ctx->Driver.UnmapBuffer(ctx, target, bufObj); |
bufObj->AccessFlags = DEFAULT_ACCESS; |
ASSERT(bufObj->Pointer == NULL); |
} |
|
FLUSH_VERTICES(ctx, _NEW_BUFFER_OBJECT); |
|
bufObj->Written = GL_TRUE; |
|
#ifdef VBO_DEBUG |
printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n", |
bufObj->Name, size, data, usage); |
#endif |
|
#ifdef BOUNDS_CHECK |
size += 100; |
#endif |
|
ASSERT(ctx->Driver.BufferData); |
if (!ctx->Driver.BufferData( ctx, target, size, data, usage, bufObj )) { |
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBufferDataARB()"); |
} |
} |
|
|
void GLAPIENTRY |
_mesa_BufferSubDataARB(GLenum target, GLintptrARB offset, |
GLsizeiptrARB size, const GLvoid * data) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_buffer_object *bufObj; |
ASSERT_OUTSIDE_BEGIN_END(ctx); |
|
bufObj = buffer_object_subdata_range_good( ctx, target, offset, size, |
"glBufferSubDataARB" ); |
if (!bufObj) { |
/* error already recorded */ |
return; |
} |
|
if (size == 0) |
return; |
|
bufObj->Written = GL_TRUE; |
|
ASSERT(ctx->Driver.BufferSubData); |
ctx->Driver.BufferSubData( ctx, target, offset, size, data, bufObj ); |
} |
|
|
void GLAPIENTRY |
_mesa_GetBufferSubDataARB(GLenum target, GLintptrARB offset, |
GLsizeiptrARB size, void * data) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_buffer_object *bufObj; |
ASSERT_OUTSIDE_BEGIN_END(ctx); |
|
bufObj = buffer_object_subdata_range_good( ctx, target, offset, size, |
"glGetBufferSubDataARB" ); |
if (!bufObj) { |
/* error already recorded */ |
return; |
} |
|
ASSERT(ctx->Driver.GetBufferSubData); |
ctx->Driver.GetBufferSubData( ctx, target, offset, size, data, bufObj ); |
} |
|
|
void * GLAPIENTRY |
_mesa_MapBufferARB(GLenum target, GLenum access) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_buffer_object * bufObj; |
GLbitfield accessFlags; |
void *map; |
|
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL); |
|
switch (access) { |
case GL_READ_ONLY_ARB: |
accessFlags = GL_MAP_READ_BIT; |
break; |
case GL_WRITE_ONLY_ARB: |
accessFlags = GL_MAP_WRITE_BIT; |
break; |
case GL_READ_WRITE_ARB: |
accessFlags = GL_MAP_READ_BIT | GL_MAP_WRITE_BIT; |
break; |
default: |
_mesa_error(ctx, GL_INVALID_ENUM, "glMapBufferARB(access)"); |
return NULL; |
} |
|
bufObj = get_buffer(ctx, target); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_ENUM, "glMapBufferARB(target)" ); |
return NULL; |
} |
if (!_mesa_is_bufferobj(bufObj)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, "glMapBufferARB(buffer 0)" ); |
return NULL; |
} |
if (_mesa_bufferobj_mapped(bufObj)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, "glMapBufferARB(already mapped)"); |
return NULL; |
} |
|
ASSERT(ctx->Driver.MapBuffer); |
map = ctx->Driver.MapBuffer( ctx, target, access, bufObj ); |
if (!map) { |
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glMapBufferARB(map failed)"); |
return NULL; |
} |
else { |
/* The driver callback should have set these fields. |
* This is important because other modules (like VBO) might call |
* the driver function directly. |
*/ |
ASSERT(bufObj->Pointer == map); |
ASSERT(bufObj->Length == bufObj->Size); |
ASSERT(bufObj->Offset == 0); |
bufObj->AccessFlags = accessFlags; |
} |
|
if (access == GL_WRITE_ONLY_ARB || access == GL_READ_WRITE_ARB) |
bufObj->Written = GL_TRUE; |
|
#ifdef VBO_DEBUG |
printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n", |
bufObj->Name, bufObj->Size, access); |
if (access == GL_WRITE_ONLY_ARB) { |
GLuint i; |
GLubyte *b = (GLubyte *) bufObj->Pointer; |
for (i = 0; i < bufObj->Size; i++) |
b[i] = i & 0xff; |
} |
#endif |
|
#ifdef BOUNDS_CHECK |
{ |
GLubyte *buf = (GLubyte *) bufObj->Pointer; |
GLuint i; |
/* buffer is 100 bytes larger than requested, fill with magic value */ |
for (i = 0; i < 100; i++) { |
buf[bufObj->Size - i - 1] = 123; |
} |
} |
#endif |
|
return bufObj->Pointer; |
} |
|
|
GLboolean GLAPIENTRY |
_mesa_UnmapBufferARB(GLenum target) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_buffer_object *bufObj; |
GLboolean status = GL_TRUE; |
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); |
|
bufObj = get_buffer(ctx, target); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_ENUM, "glUnmapBufferARB(target)" ); |
return GL_FALSE; |
} |
if (!_mesa_is_bufferobj(bufObj)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, "glUnmapBufferARB" ); |
return GL_FALSE; |
} |
if (!_mesa_bufferobj_mapped(bufObj)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, "glUnmapBufferARB"); |
return GL_FALSE; |
} |
|
#ifdef BOUNDS_CHECK |
if (bufObj->Access != GL_READ_ONLY_ARB) { |
GLubyte *buf = (GLubyte *) bufObj->Pointer; |
GLuint i; |
/* check that last 100 bytes are still = magic value */ |
for (i = 0; i < 100; i++) { |
GLuint pos = bufObj->Size - i - 1; |
if (buf[pos] != 123) { |
_mesa_warning(ctx, "Out of bounds buffer object write detected" |
" at position %d (value = %u)\n", |
pos, buf[pos]); |
} |
} |
} |
#endif |
|
#ifdef VBO_DEBUG |
if (bufObj->AccessFlags & GL_MAP_WRITE_BIT) { |
GLuint i, unchanged = 0; |
GLubyte *b = (GLubyte *) bufObj->Pointer; |
GLint pos = -1; |
/* check which bytes changed */ |
for (i = 0; i < bufObj->Size - 1; i++) { |
if (b[i] == (i & 0xff) && b[i+1] == ((i+1) & 0xff)) { |
unchanged++; |
if (pos == -1) |
pos = i; |
} |
} |
if (unchanged) { |
printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n", |
bufObj->Name, unchanged, bufObj->Size, pos); |
} |
} |
#endif |
|
status = ctx->Driver.UnmapBuffer( ctx, target, bufObj ); |
bufObj->AccessFlags = DEFAULT_ACCESS; |
ASSERT(bufObj->Pointer == NULL); |
ASSERT(bufObj->Offset == 0); |
ASSERT(bufObj->Length == 0); |
|
return status; |
} |
|
|
void GLAPIENTRY |
_mesa_GetBufferParameterivARB(GLenum target, GLenum pname, GLint *params) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_buffer_object *bufObj; |
ASSERT_OUTSIDE_BEGIN_END(ctx); |
|
bufObj = get_buffer(ctx, target); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameterivARB(target)" ); |
return; |
} |
if (!_mesa_is_bufferobj(bufObj)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetBufferParameterivARB" ); |
return; |
} |
|
switch (pname) { |
case GL_BUFFER_SIZE_ARB: |
*params = (GLint) bufObj->Size; |
return; |
case GL_BUFFER_USAGE_ARB: |
*params = bufObj->Usage; |
return; |
case GL_BUFFER_ACCESS_ARB: |
*params = simplified_access_mode(bufObj->AccessFlags); |
return; |
case GL_BUFFER_MAPPED_ARB: |
*params = _mesa_bufferobj_mapped(bufObj); |
return; |
case GL_BUFFER_ACCESS_FLAGS: |
if (ctx->VersionMajor < 3) |
goto invalid_pname; |
*params = bufObj->AccessFlags; |
return; |
case GL_BUFFER_MAP_OFFSET: |
if (ctx->VersionMajor < 3) |
goto invalid_pname; |
*params = (GLint) bufObj->Offset; |
return; |
case GL_BUFFER_MAP_LENGTH: |
if (ctx->VersionMajor < 3) |
goto invalid_pname; |
*params = (GLint) bufObj->Length; |
return; |
default: |
; /* fall-through */ |
} |
|
invalid_pname: |
_mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameterivARB(pname=%s)", |
_mesa_lookup_enum_by_nr(pname)); |
} |
|
|
/** |
* New in GL 3.2 |
* This is pretty much a duplicate of GetBufferParameteriv() but the |
* GL_BUFFER_SIZE_ARB attribute will be 64-bits on a 64-bit system. |
*/ |
void GLAPIENTRY |
_mesa_GetBufferParameteri64v(GLenum target, GLenum pname, GLint64 *params) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_buffer_object *bufObj; |
ASSERT_OUTSIDE_BEGIN_END(ctx); |
|
bufObj = get_buffer(ctx, target); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameteri64v(target)" ); |
return; |
} |
if (!_mesa_is_bufferobj(bufObj)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetBufferParameteri64v" ); |
return; |
} |
|
switch (pname) { |
case GL_BUFFER_SIZE_ARB: |
*params = bufObj->Size; |
return; |
case GL_BUFFER_USAGE_ARB: |
*params = bufObj->Usage; |
return; |
case GL_BUFFER_ACCESS_ARB: |
*params = simplified_access_mode(bufObj->AccessFlags); |
return; |
case GL_BUFFER_ACCESS_FLAGS: |
if (ctx->VersionMajor < 3) |
goto invalid_pname; |
*params = bufObj->AccessFlags; |
return; |
case GL_BUFFER_MAPPED_ARB: |
*params = _mesa_bufferobj_mapped(bufObj); |
return; |
case GL_BUFFER_MAP_OFFSET: |
if (ctx->VersionMajor < 3) |
goto invalid_pname; |
*params = bufObj->Offset; |
return; |
case GL_BUFFER_MAP_LENGTH: |
if (ctx->VersionMajor < 3) |
goto invalid_pname; |
*params = bufObj->Length; |
return; |
default: |
; /* fall-through */ |
} |
|
invalid_pname: |
_mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameteri64v(pname=%s)", |
_mesa_lookup_enum_by_nr(pname)); |
} |
|
|
void GLAPIENTRY |
_mesa_GetBufferPointervARB(GLenum target, GLenum pname, GLvoid **params) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_buffer_object * bufObj; |
ASSERT_OUTSIDE_BEGIN_END(ctx); |
|
if (pname != GL_BUFFER_MAP_POINTER_ARB) { |
_mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferPointervARB(pname)"); |
return; |
} |
|
bufObj = get_buffer(ctx, target); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferPointervARB(target)" ); |
return; |
} |
if (!_mesa_is_bufferobj(bufObj)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetBufferPointervARB" ); |
return; |
} |
|
*params = bufObj->Pointer; |
} |
|
|
void GLAPIENTRY |
_mesa_CopyBufferSubData(GLenum readTarget, GLenum writeTarget, |
GLintptr readOffset, GLintptr writeOffset, |
GLsizeiptr size) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_buffer_object *src, *dst; |
ASSERT_OUTSIDE_BEGIN_END(ctx); |
|
src = get_buffer(ctx, readTarget); |
if (!src || !_mesa_is_bufferobj(src)) { |
_mesa_error(ctx, GL_INVALID_ENUM, |
"glCopyBuffserSubData(readTarget = 0x%x)", readTarget); |
return; |
} |
|
dst = get_buffer(ctx, writeTarget); |
if (!dst || !_mesa_is_bufferobj(dst)) { |
_mesa_error(ctx, GL_INVALID_ENUM, |
"glCopyBuffserSubData(writeTarget = 0x%x)", writeTarget); |
return; |
} |
|
if (_mesa_bufferobj_mapped(src)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glCopyBuffserSubData(readBuffer is mapped)"); |
return; |
} |
|
if (_mesa_bufferobj_mapped(dst)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glCopyBuffserSubData(writeBuffer is mapped)"); |
return; |
} |
|
if (readOffset < 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glCopyBuffserSubData(readOffset = %d)", (int) readOffset); |
return; |
} |
|
if (writeOffset < 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glCopyBuffserSubData(writeOffset = %d)", (int) writeOffset); |
return; |
} |
|
if (readOffset + size > src->Size) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glCopyBuffserSubData(readOffset + size = %d)", |
(int) (readOffset + size)); |
return; |
} |
|
if (writeOffset + size > dst->Size) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glCopyBuffserSubData(writeOffset + size = %d)", |
(int) (writeOffset + size)); |
return; |
} |
|
if (src == dst) { |
if (readOffset + size <= writeOffset) { |
/* OK */ |
} |
else if (writeOffset + size <= readOffset) { |
/* OK */ |
} |
else { |
/* overlapping src/dst is illegal */ |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glCopyBuffserSubData(overlapping src/dst)"); |
return; |
} |
} |
|
ctx->Driver.CopyBufferSubData(ctx, src, dst, readOffset, writeOffset, size); |
} |
|
|
/** |
* See GL_ARB_map_buffer_range spec |
*/ |
void * GLAPIENTRY |
_mesa_MapBufferRange(GLenum target, GLintptr offset, GLsizeiptr length, |
GLbitfield access) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_buffer_object *bufObj; |
void *map; |
|
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL); |
|
if (!ctx->Extensions.ARB_map_buffer_range) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glMapBufferRange(extension not supported)"); |
return NULL; |
} |
|
if (offset < 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glMapBufferRange(offset = %ld)", (long)offset); |
return NULL; |
} |
|
if (length < 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glMapBufferRange(length = %ld)", (long)length); |
return NULL; |
} |
|
if ((access & (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)) == 0) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glMapBufferRange(access indicates neither read or write)"); |
return NULL; |
} |
|
if (access & GL_MAP_READ_BIT) { |
if ((access & GL_MAP_INVALIDATE_RANGE_BIT) || |
(access & GL_MAP_INVALIDATE_BUFFER_BIT) || |
(access & GL_MAP_UNSYNCHRONIZED_BIT)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glMapBufferRange(invalid access flags)"); |
return NULL; |
} |
} |
|
if ((access & GL_MAP_FLUSH_EXPLICIT_BIT) && |
((access & GL_MAP_WRITE_BIT) == 0)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glMapBufferRange(invalid access flags)"); |
return NULL; |
} |
|
bufObj = get_buffer(ctx, target); |
if (!bufObj || !_mesa_is_bufferobj(bufObj)) { |
_mesa_error(ctx, GL_INVALID_ENUM, |
"glMapBufferRange(target = 0x%x)", target); |
return NULL; |
} |
|
if (offset + length > bufObj->Size) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glMapBufferRange(offset + length > size)"); |
return NULL; |
} |
|
if (_mesa_bufferobj_mapped(bufObj)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glMapBufferRange(buffer already mapped)"); |
return NULL; |
} |
|
ASSERT(ctx->Driver.MapBufferRange); |
map = ctx->Driver.MapBufferRange(ctx, target, offset, length, |
access, bufObj); |
if (!map) { |
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glMapBufferARB(map failed)"); |
} |
else { |
/* The driver callback should have set all these fields. |
* This is important because other modules (like VBO) might call |
* the driver function directly. |
*/ |
ASSERT(bufObj->Pointer == map); |
ASSERT(bufObj->Length == length); |
ASSERT(bufObj->Offset == offset); |
ASSERT(bufObj->AccessFlags == access); |
} |
|
return map; |
} |
|
|
/** |
* See GL_ARB_map_buffer_range spec |
*/ |
void GLAPIENTRY |
_mesa_FlushMappedBufferRange(GLenum target, GLintptr offset, GLsizeiptr length) |
{ |
GET_CURRENT_CONTEXT(ctx); |
struct gl_buffer_object *bufObj; |
ASSERT_OUTSIDE_BEGIN_END(ctx); |
|
if (!ctx->Extensions.ARB_map_buffer_range) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glMapBufferRange(extension not supported)"); |
return; |
} |
|
if (offset < 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glMapBufferRange(offset = %ld)", (long)offset); |
return; |
} |
|
if (length < 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glMapBufferRange(length = %ld)", (long)length); |
return; |
} |
|
bufObj = get_buffer(ctx, target); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_ENUM, |
"glMapBufferRange(target = 0x%x)", target); |
return; |
} |
|
if (!_mesa_is_bufferobj(bufObj)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glMapBufferRange(current buffer is 0)"); |
return; |
} |
|
if (!_mesa_bufferobj_mapped(bufObj)) { |
/* buffer is not mapped */ |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glMapBufferRange(buffer is not mapped)"); |
return; |
} |
|
if ((bufObj->AccessFlags & GL_MAP_FLUSH_EXPLICIT_BIT) == 0) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glMapBufferRange(GL_MAP_FLUSH_EXPLICIT_BIT not set)"); |
return; |
} |
|
if (offset + length > bufObj->Length) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glMapBufferRange(offset %ld + length %ld > mapped length %ld)", |
(long)offset, (long)length, (long)bufObj->Length); |
return; |
} |
|
ASSERT(bufObj->AccessFlags & GL_MAP_WRITE_BIT); |
|
if (ctx->Driver.FlushMappedBufferRange) |
ctx->Driver.FlushMappedBufferRange(ctx, target, offset, length, bufObj); |
} |
|
|
#if FEATURE_APPLE_object_purgeable |
static GLenum |
_mesa_BufferObjectPurgeable(struct gl_context *ctx, GLuint name, GLenum option) |
{ |
struct gl_buffer_object *bufObj; |
GLenum retval; |
|
bufObj = _mesa_lookup_bufferobj(ctx, name); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glObjectPurgeable(name = 0x%x)", name); |
return 0; |
} |
if (!_mesa_is_bufferobj(bufObj)) { |
_mesa_error(ctx, GL_INVALID_OPERATION, "glObjectPurgeable(buffer 0)" ); |
return 0; |
} |
|
if (bufObj->Purgeable) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glObjectPurgeable(name = 0x%x) is already purgeable", name); |
return GL_VOLATILE_APPLE; |
} |
|
bufObj->Purgeable = GL_TRUE; |
|
retval = GL_VOLATILE_APPLE; |
if (ctx->Driver.BufferObjectPurgeable) |
retval = ctx->Driver.BufferObjectPurgeable(ctx, bufObj, option); |
|
return retval; |
} |
|
|
static GLenum |
_mesa_RenderObjectPurgeable(struct gl_context *ctx, GLuint name, GLenum option) |
{ |
struct gl_renderbuffer *bufObj; |
GLenum retval; |
|
bufObj = _mesa_lookup_renderbuffer(ctx, name); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glObjectUnpurgeable(name = 0x%x)", name); |
return 0; |
} |
|
if (bufObj->Purgeable) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glObjectPurgeable(name = 0x%x) is already purgeable", name); |
return GL_VOLATILE_APPLE; |
} |
|
bufObj->Purgeable = GL_TRUE; |
|
retval = GL_VOLATILE_APPLE; |
if (ctx->Driver.RenderObjectPurgeable) |
retval = ctx->Driver.RenderObjectPurgeable(ctx, bufObj, option); |
|
return retval; |
} |
|
|
static GLenum |
_mesa_TextureObjectPurgeable(struct gl_context *ctx, GLuint name, GLenum option) |
{ |
struct gl_texture_object *bufObj; |
GLenum retval; |
|
bufObj = _mesa_lookup_texture(ctx, name); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glObjectPurgeable(name = 0x%x)", name); |
return 0; |
} |
|
if (bufObj->Purgeable) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glObjectPurgeable(name = 0x%x) is already purgeable", name); |
return GL_VOLATILE_APPLE; |
} |
|
bufObj->Purgeable = GL_TRUE; |
|
retval = GL_VOLATILE_APPLE; |
if (ctx->Driver.TextureObjectPurgeable) |
retval = ctx->Driver.TextureObjectPurgeable(ctx, bufObj, option); |
|
return retval; |
} |
|
|
GLenum GLAPIENTRY |
_mesa_ObjectPurgeableAPPLE(GLenum objectType, GLuint name, GLenum option) |
{ |
GLenum retval; |
|
GET_CURRENT_CONTEXT(ctx); |
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0); |
|
if (name == 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glObjectPurgeable(name = 0x%x)", name); |
return 0; |
} |
|
switch (option) { |
case GL_VOLATILE_APPLE: |
case GL_RELEASED_APPLE: |
/* legal */ |
break; |
default: |
_mesa_error(ctx, GL_INVALID_ENUM, |
"glObjectPurgeable(name = 0x%x) invalid option: %d", |
name, option); |
return 0; |
} |
|
switch (objectType) { |
case GL_TEXTURE: |
retval = _mesa_TextureObjectPurgeable (ctx, name, option); |
break; |
case GL_RENDERBUFFER_EXT: |
retval = _mesa_RenderObjectPurgeable (ctx, name, option); |
break; |
case GL_BUFFER_OBJECT_APPLE: |
retval = _mesa_BufferObjectPurgeable (ctx, name, option); |
break; |
default: |
_mesa_error(ctx, GL_INVALID_ENUM, |
"glObjectPurgeable(name = 0x%x) invalid type: %d", |
name, objectType); |
return 0; |
} |
|
/* In strict conformance to the spec, we must only return VOLATILE when |
* when passed the VOLATILE option. Madness. |
* |
* XXX First fix the spec, then fix me. |
*/ |
return option == GL_VOLATILE_APPLE ? GL_VOLATILE_APPLE : retval; |
} |
|
|
static GLenum |
_mesa_BufferObjectUnpurgeable(struct gl_context *ctx, GLuint name, GLenum option) |
{ |
struct gl_buffer_object *bufObj; |
GLenum retval; |
|
bufObj = _mesa_lookup_bufferobj(ctx, name); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glObjectUnpurgeable(name = 0x%x)", name); |
return 0; |
} |
|
if (! bufObj->Purgeable) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glObjectUnpurgeable(name = 0x%x) object is " |
" already \"unpurged\"", name); |
return 0; |
} |
|
bufObj->Purgeable = GL_FALSE; |
|
retval = option; |
if (ctx->Driver.BufferObjectUnpurgeable) |
retval = ctx->Driver.BufferObjectUnpurgeable(ctx, bufObj, option); |
|
return retval; |
} |
|
|
static GLenum |
_mesa_RenderObjectUnpurgeable(struct gl_context *ctx, GLuint name, GLenum option) |
{ |
struct gl_renderbuffer *bufObj; |
GLenum retval; |
|
bufObj = _mesa_lookup_renderbuffer(ctx, name); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glObjectUnpurgeable(name = 0x%x)", name); |
return 0; |
} |
|
if (! bufObj->Purgeable) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glObjectUnpurgeable(name = 0x%x) object is " |
" already \"unpurged\"", name); |
return 0; |
} |
|
bufObj->Purgeable = GL_FALSE; |
|
retval = option; |
if (ctx->Driver.RenderObjectUnpurgeable) |
retval = ctx->Driver.RenderObjectUnpurgeable(ctx, bufObj, option); |
|
return retval; |
} |
|
|
static GLenum |
_mesa_TextureObjectUnpurgeable(struct gl_context *ctx, GLuint name, GLenum option) |
{ |
struct gl_texture_object *bufObj; |
GLenum retval; |
|
bufObj = _mesa_lookup_texture(ctx, name); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glObjectUnpurgeable(name = 0x%x)", name); |
return 0; |
} |
|
if (! bufObj->Purgeable) { |
_mesa_error(ctx, GL_INVALID_OPERATION, |
"glObjectUnpurgeable(name = 0x%x) object is" |
" already \"unpurged\"", name); |
return 0; |
} |
|
bufObj->Purgeable = GL_FALSE; |
|
retval = option; |
if (ctx->Driver.TextureObjectUnpurgeable) |
retval = ctx->Driver.TextureObjectUnpurgeable(ctx, bufObj, option); |
|
return retval; |
} |
|
|
GLenum GLAPIENTRY |
_mesa_ObjectUnpurgeableAPPLE(GLenum objectType, GLuint name, GLenum option) |
{ |
GET_CURRENT_CONTEXT(ctx); |
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0); |
|
if (name == 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glObjectUnpurgeable(name = 0x%x)", name); |
return 0; |
} |
|
switch (option) { |
case GL_RETAINED_APPLE: |
case GL_UNDEFINED_APPLE: |
/* legal */ |
break; |
default: |
_mesa_error(ctx, GL_INVALID_ENUM, |
"glObjectUnpurgeable(name = 0x%x) invalid option: %d", |
name, option); |
return 0; |
} |
|
switch (objectType) { |
case GL_BUFFER_OBJECT_APPLE: |
return _mesa_BufferObjectUnpurgeable(ctx, name, option); |
case GL_TEXTURE: |
return _mesa_TextureObjectUnpurgeable(ctx, name, option); |
case GL_RENDERBUFFER_EXT: |
return _mesa_RenderObjectUnpurgeable(ctx, name, option); |
default: |
_mesa_error(ctx, GL_INVALID_ENUM, |
"glObjectUnpurgeable(name = 0x%x) invalid type: %d", |
name, objectType); |
return 0; |
} |
} |
|
|
static void |
_mesa_GetBufferObjectParameterivAPPLE(struct gl_context *ctx, GLuint name, |
GLenum pname, GLint* params) |
{ |
struct gl_buffer_object *bufObj; |
|
bufObj = _mesa_lookup_bufferobj(ctx, name); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glGetObjectParameteriv(name = 0x%x) invalid object", name); |
return; |
} |
|
switch (pname) { |
case GL_PURGEABLE_APPLE: |
*params = bufObj->Purgeable; |
break; |
default: |
_mesa_error(ctx, GL_INVALID_ENUM, |
"glGetObjectParameteriv(name = 0x%x) invalid enum: %d", |
name, pname); |
break; |
} |
} |
|
|
static void |
_mesa_GetRenderObjectParameterivAPPLE(struct gl_context *ctx, GLuint name, |
GLenum pname, GLint* params) |
{ |
struct gl_renderbuffer *bufObj; |
|
bufObj = _mesa_lookup_renderbuffer(ctx, name); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glObjectUnpurgeable(name = 0x%x)", name); |
return; |
} |
|
switch (pname) { |
case GL_PURGEABLE_APPLE: |
*params = bufObj->Purgeable; |
break; |
default: |
_mesa_error(ctx, GL_INVALID_ENUM, |
"glGetObjectParameteriv(name = 0x%x) invalid enum: %d", |
name, pname); |
break; |
} |
} |
|
|
static void |
_mesa_GetTextureObjectParameterivAPPLE(struct gl_context *ctx, GLuint name, |
GLenum pname, GLint* params) |
{ |
struct gl_texture_object *bufObj; |
|
bufObj = _mesa_lookup_texture(ctx, name); |
if (!bufObj) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glObjectUnpurgeable(name = 0x%x)", name); |
return; |
} |
|
switch (pname) { |
case GL_PURGEABLE_APPLE: |
*params = bufObj->Purgeable; |
break; |
default: |
_mesa_error(ctx, GL_INVALID_ENUM, |
"glGetObjectParameteriv(name = 0x%x) invalid enum: %d", |
name, pname); |
break; |
} |
} |
|
|
void GLAPIENTRY |
_mesa_GetObjectParameterivAPPLE(GLenum objectType, GLuint name, GLenum pname, |
GLint* params) |
{ |
GET_CURRENT_CONTEXT(ctx); |
|
if (name == 0) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glGetObjectParameteriv(name = 0x%x)", name); |
return; |
} |
|
switch (objectType) { |
case GL_TEXTURE: |
_mesa_GetTextureObjectParameterivAPPLE (ctx, name, pname, params); |
break; |
case GL_BUFFER_OBJECT_APPLE: |
_mesa_GetBufferObjectParameterivAPPLE (ctx, name, pname, params); |
break; |
case GL_RENDERBUFFER_EXT: |
_mesa_GetRenderObjectParameterivAPPLE (ctx, name, pname, params); |
break; |
default: |
_mesa_error(ctx, GL_INVALID_ENUM, |
"glGetObjectParameteriv(name = 0x%x) invalid type: %d", |
name, objectType); |
} |
} |
|
#endif /* FEATURE_APPLE_object_purgeable */ |