static CoglBool
recreate_store (CoglBuffer *buffer,
CoglError **error)
{
CoglContext *ctx = buffer->context;
GLenum gl_target;
GLenum gl_enum;
GLenum gl_error;
/* This assumes the buffer is already bound */
gl_target = convert_bind_target_to_gl_target (buffer->last_target);
gl_enum = update_hints_to_gl_enum (buffer);
/* Clear any GL errors */
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
ctx->glBufferData (gl_target,
buffer->size,
NULL,
gl_enum);
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
return FALSE;
buffer->store_created = TRUE;
return TRUE;
}
CoglBool
_cogl_buffer_gl_set_data (CoglBuffer *buffer,
unsigned int offset,
const void *data,
unsigned int size,
CoglError **error)
{
CoglBufferBindTarget target;
GLenum gl_target;
CoglContext *ctx = buffer->context;
GLenum gl_error;
CoglBool status = TRUE;
CoglError *internal_error = NULL;
target = buffer->last_target;
_cogl_buffer_gl_bind (buffer, target, &internal_error);
/* NB: _cogl_buffer_gl_bind() may return NULL in non-error
* conditions so we have to explicity check internal_error
* to see if an exception was thrown.
*/
if (internal_error)
{
_cogl_propagate_error (error, internal_error);
return FALSE;
}
gl_target = convert_bind_target_to_gl_target (target);
/* Clear any GL errors */
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
ctx->glBufferSubData (gl_target, offset, size, data);
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
status = FALSE;
_cogl_buffer_gl_unbind (buffer);
return status;
}
static CoglBool
allocate_with_size (CoglTexture3D *tex_3d,
CoglTextureLoader *loader,
CoglError **error)
{
CoglTexture *tex = COGL_TEXTURE (tex_3d);
CoglContext *ctx = tex->context;
CoglPixelFormat internal_format;
int width = loader->src.sized.width;
int height = loader->src.sized.height;
int depth = loader->src.sized.depth;
GLenum gl_intformat;
GLenum gl_format;
GLenum gl_type;
GLenum gl_texture;
internal_format =
_cogl_texture_determine_internal_format (tex, COGL_PIXEL_FORMAT_ANY);
if (!_cogl_texture_3d_can_create (ctx,
width,
height,
depth,
internal_format,
error))
return FALSE;
ctx->driver_vtable->pixel_format_to_gl (ctx,
internal_format,
&gl_intformat,
&gl_format,
&gl_type);
gl_texture =
ctx->texture_driver->gen (ctx, GL_TEXTURE_3D, internal_format);
_cogl_bind_gl_texture_transient (GL_TEXTURE_3D,
gl_texture,
FALSE);
/* Clear any GL errors */
_cogl_gl_util_clear_gl_errors (ctx);
ctx->glTexImage3D (GL_TEXTURE_3D, 0, gl_intformat,
width, height, depth,
0, gl_format, gl_type, NULL);
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
{
GE( ctx, glDeleteTextures (1, &gl_texture) );
return FALSE;
}
tex_3d->gl_texture = gl_texture;
tex_3d->gl_format = gl_intformat;
tex_3d->depth = depth;
tex_3d->internal_format = internal_format;
_cogl_texture_set_allocated (tex, internal_format, width, height);
return TRUE;
}
static CoglBool
_cogl_texture_driver_upload_to_gl_3d (CoglContext *ctx,
GLenum gl_target,
GLuint gl_handle,
CoglBool is_foreign,
GLint height,
GLint depth,
CoglBitmap *source_bmp,
GLint internal_gl_format,
GLuint source_gl_format,
GLuint source_gl_type,
CoglError **error)
{
CoglPixelFormat source_format = cogl_bitmap_get_format (source_bmp);
int bpp = _cogl_pixel_format_get_bytes_per_pixel (source_format);
int rowstride = cogl_bitmap_get_rowstride (source_bmp);
int bmp_width = cogl_bitmap_get_width (source_bmp);
int bmp_height = cogl_bitmap_get_height (source_bmp);
uint8_t *data;
GLenum gl_error;
_cogl_bind_gl_texture_transient (gl_target, gl_handle, is_foreign);
/* If the rowstride or image height can't be specified with just
GL_ALIGNMENT alone then we need to copy the bitmap because there
is no GL_ROW_LENGTH */
if (rowstride / bpp != bmp_width ||
height != bmp_height / depth)
{
CoglBitmap *bmp;
int image_height = bmp_height / depth;
CoglPixelFormat source_bmp_format = cogl_bitmap_get_format (source_bmp);
int i;
_cogl_texture_driver_prep_gl_for_pixels_upload (ctx, bmp_width * bpp, bpp);
/* Initialize the texture with empty data and then upload each
image with a sub-region update */
/* Clear any GL errors */
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
ctx->glTexImage3D (gl_target,
0, /* level */
internal_gl_format,
bmp_width,
height,
depth,
0,
source_gl_format,
source_gl_type,
NULL);
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
return FALSE;
bmp = _cogl_bitmap_new_with_malloc_buffer (ctx,
bmp_width,
height,
source_bmp_format,
error);
if (!bmp)
return FALSE;
for (i = 0; i < depth; i++)
{
if (!_cogl_bitmap_copy_subregion (source_bmp,
bmp,
0, image_height * i,
0, 0,
bmp_width,
height,
error))
{
cogl_object_unref (bmp);
return FALSE;
}
data = _cogl_bitmap_gl_bind (bmp,
COGL_BUFFER_ACCESS_READ, 0, error);
if (!data)
{
cogl_object_unref (bmp);
return FALSE;
}
/* Clear any GL errors */
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
ctx->glTexSubImage3D (gl_target,
0, /* level */
0, /* xoffset */
0, /* yoffset */
i, /* zoffset */
bmp_width, /* width */
height, /* height */
1, /* depth */
source_gl_format,
source_gl_type,
data);
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
{
cogl_object_unref (bmp);
_cogl_bitmap_gl_unbind (bmp);
return FALSE;
}
_cogl_bitmap_gl_unbind (bmp);
}
cogl_object_unref (bmp);
}
else
{
data = _cogl_bitmap_gl_bind (source_bmp, COGL_BUFFER_ACCESS_READ, 0, error);
if (!data)
return FALSE;
_cogl_texture_driver_prep_gl_for_pixels_upload (ctx, rowstride, bpp);
/* Clear any GL errors */
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
ctx->glTexImage3D (gl_target,
0, /* level */
internal_gl_format,
bmp_width,
height,
depth,
0,
source_gl_format,
source_gl_type,
data);
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
{
_cogl_bitmap_gl_unbind (source_bmp);
return FALSE;
}
_cogl_bitmap_gl_unbind (source_bmp);
}
return TRUE;
}
static CoglBool
_cogl_texture_driver_upload_to_gl (CoglContext *ctx,
GLenum gl_target,
GLuint gl_handle,
CoglBool is_foreign,
CoglBitmap *source_bmp,
GLint internal_gl_format,
GLuint source_gl_format,
GLuint source_gl_type,
CoglError **error)
{
CoglPixelFormat source_format = cogl_bitmap_get_format (source_bmp);
int bpp = _cogl_pixel_format_get_bytes_per_pixel (source_format);
int rowstride;
int bmp_width = cogl_bitmap_get_width (source_bmp);
int bmp_height = cogl_bitmap_get_height (source_bmp);
CoglBitmap *bmp;
uint8_t *data;
GLenum gl_error;
CoglError *internal_error = NULL;
CoglBool status = TRUE;
bmp = prepare_bitmap_alignment_for_upload (ctx, source_bmp, error);
if (!bmp)
return FALSE;
rowstride = cogl_bitmap_get_rowstride (bmp);
/* Setup gl alignment to match rowstride and top-left corner */
_cogl_texture_driver_prep_gl_for_pixels_upload (ctx, rowstride, bpp);
_cogl_bind_gl_texture_transient (gl_target, gl_handle, is_foreign);
data = _cogl_bitmap_gl_bind (bmp,
COGL_BUFFER_ACCESS_READ,
0, /* hints */
&internal_error);
/* NB: _cogl_bitmap_gl_bind() may return NULL when successful so we
* have to explicitly check the cogl error pointer to catch
* problems... */
if (internal_error)
{
cogl_object_unref (bmp);
_cogl_propagate_error (error, internal_error);
return FALSE;
}
/* Clear any GL errors */
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
ctx->glTexImage2D (gl_target, 0,
internal_gl_format,
bmp_width, bmp_height,
0,
source_gl_format,
source_gl_type,
data);
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
status = FALSE;
_cogl_bitmap_gl_unbind (bmp);
cogl_object_unref (bmp);
return status;
}
static CoglBool
_cogl_texture_driver_upload_subregion_to_gl (CoglContext *ctx,
CoglTexture *texture,
CoglBool is_foreign,
int src_x,
int src_y,
int dst_x,
int dst_y,
int width,
int height,
int level,
CoglBitmap *source_bmp,
GLuint source_gl_format,
GLuint source_gl_type,
CoglError **error)
{
GLenum gl_target;
GLuint gl_handle;
uint8_t *data;
CoglPixelFormat source_format = cogl_bitmap_get_format (source_bmp);
int bpp = _cogl_pixel_format_get_bytes_per_pixel (source_format);
CoglBitmap *slice_bmp;
int rowstride;
GLenum gl_error;
CoglBool status = TRUE;
CoglError *internal_error = NULL;
int level_width;
int level_height;
cogl_texture_get_gl_texture (texture, &gl_handle, &gl_target);
/* If we have the GL_EXT_unpack_subimage extension then we can
upload from subregions directly. Otherwise we may need to copy
the bitmap */
if (!(ctx->private_feature_flags & COGL_PRIVATE_FEATURE_UNPACK_SUBIMAGE) &&
(src_x != 0 || src_y != 0 ||
width != cogl_bitmap_get_width (source_bmp) ||
height != cogl_bitmap_get_height (source_bmp)))
{
slice_bmp =
_cogl_bitmap_new_with_malloc_buffer (ctx,
width, height,
source_format,
error);
if (!slice_bmp)
return FALSE;
if (!_cogl_bitmap_copy_subregion (source_bmp,
slice_bmp,
src_x, src_y,
0, 0, /* dst_x/y */
width, height,
error))
{
cogl_object_unref (slice_bmp);
return FALSE;
}
src_x = src_y = 0;
}
else
{
slice_bmp = prepare_bitmap_alignment_for_upload (ctx, source_bmp, error);
if (!slice_bmp)
return FALSE;
}
rowstride = cogl_bitmap_get_rowstride (slice_bmp);
/* Setup gl alignment to match rowstride and top-left corner */
prep_gl_for_pixels_upload_full (ctx, rowstride, src_x, src_y, bpp);
data = _cogl_bitmap_gl_bind (slice_bmp, COGL_BUFFER_ACCESS_READ, 0, &internal_error);
/* NB: _cogl_bitmap_gl_bind() may return NULL when successfull so we
* have to explicitly check the cogl error pointer to catch
* problems... */
if (internal_error)
{
_cogl_propagate_error (error, internal_error);
cogl_object_unref (slice_bmp);
return FALSE;
}
_cogl_bind_gl_texture_transient (gl_target, gl_handle, is_foreign);
/* Clear any GL errors */
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
_cogl_texture_get_level_size (texture,
level,
&level_width,
&level_height,
NULL);
if (level_width == width && level_height == height)
{
/* GL gets upset if you use glTexSubImage2D to define the
* contents of a mipmap level so we make sure to use
* glTexImage2D if we are uploading a full mipmap level.
*/
ctx->glTexImage2D (gl_target,
level,
_cogl_texture_gl_get_format (texture),
width,
height,
0,
source_gl_format,
source_gl_type,
data);
}
else
{
/* GL gets upset if you use glTexSubImage2D to initialize the
* contents of a mipmap level so if this is the first time
* we've seen a request to upload to this level we call
* glTexImage2D first to assert that the storage for this
* level exists.
*/
if (texture->max_level < level)
{
ctx->glTexImage2D (gl_target,
level,
_cogl_texture_gl_get_format (texture),
level_width,
level_height,
0,
source_gl_format,
source_gl_type,
NULL);
}
ctx->glTexSubImage2D (gl_target,
level,
dst_x, dst_y,
width, height,
source_gl_format,
source_gl_type,
data);
}
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
status = FALSE;
_cogl_bitmap_gl_unbind (slice_bmp);
cogl_object_unref (slice_bmp);
return status;
}
static gboolean
allocate_with_size (CoglTexture2D *tex_2d,
CoglTextureLoader *loader,
CoglError **error)
{
CoglTexture *tex = COGL_TEXTURE (tex_2d);
CoglPixelFormat internal_format;
int width = loader->src.sized.width;
int height = loader->src.sized.height;
CoglContext *ctx = tex->context;
GLenum gl_intformat;
GLenum gl_format;
GLenum gl_type;
GLenum gl_texture;
internal_format =
_cogl_texture_determine_internal_format (tex, COGL_PIXEL_FORMAT_ANY);
if (!_cogl_texture_2d_gl_can_create (ctx,
width,
height,
internal_format))
{
_cogl_set_error (error, COGL_TEXTURE_ERROR,
COGL_TEXTURE_ERROR_SIZE,
"Failed to create texture 2d due to size/format"
" constraints");
return FALSE;
}
ctx->driver_vtable->pixel_format_to_gl (ctx,
internal_format,
&gl_intformat,
&gl_format,
&gl_type);
gl_texture = ctx->texture_driver->gen (ctx, GL_TEXTURE_2D, internal_format);
tex_2d->gl_internal_format = gl_intformat;
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
gl_texture,
tex_2d->is_foreign);
/* Clear any GL errors */
_cogl_gl_util_clear_gl_errors (ctx);
ctx->glTexImage2D (GL_TEXTURE_2D, 0, gl_intformat,
width, height, 0, gl_format, gl_type, NULL);
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
{
GE( ctx, glDeleteTextures (1, &gl_texture) );
return FALSE;
}
tex_2d->gl_texture = gl_texture;
tex_2d->gl_internal_format = gl_intformat;
tex_2d->internal_format = internal_format;
_cogl_texture_set_allocated (tex, internal_format, width, height);
return TRUE;
}
void *
_cogl_buffer_gl_map_range (CoglBuffer *buffer,
size_t offset,
size_t size,
CoglBufferAccess access,
CoglBufferMapHint hints,
CoglError **error)
{
uint8_t *data;
CoglBufferBindTarget target;
GLenum gl_target;
CoglContext *ctx = buffer->context;
GLenum gl_error;
if (((access & COGL_BUFFER_ACCESS_READ) &&
!cogl_has_feature (ctx, COGL_FEATURE_ID_MAP_BUFFER_FOR_READ)) ||
((access & COGL_BUFFER_ACCESS_WRITE) &&
!cogl_has_feature (ctx, COGL_FEATURE_ID_MAP_BUFFER_FOR_WRITE)))
{
_cogl_set_error (error,
COGL_SYSTEM_ERROR,
COGL_SYSTEM_ERROR_UNSUPPORTED,
"Tried to map a buffer with unsupported access mode");
return NULL;
}
target = buffer->last_target;
_cogl_buffer_bind_no_create (buffer, target);
gl_target = convert_bind_target_to_gl_target (target);
if ((hints & COGL_BUFFER_MAP_HINT_DISCARD_RANGE) &&
offset == 0 && size >= buffer->size)
hints |= COGL_BUFFER_MAP_HINT_DISCARD;
/* If the map buffer range extension is supported then we will
* always use it even if we are mapping the full range because the
* normal mapping function doesn't support passing the discard
* hints */
if (ctx->glMapBufferRange)
{
GLbitfield gl_access = 0;
CoglBool should_recreate_store = !buffer->store_created;
if ((access & COGL_BUFFER_ACCESS_READ))
gl_access |= GL_MAP_READ_BIT;
if ((access & COGL_BUFFER_ACCESS_WRITE))
gl_access |= GL_MAP_WRITE_BIT;
if ((hints & COGL_BUFFER_MAP_HINT_DISCARD))
{
/* glMapBufferRange generates an error if you pass the
* discard hint along with asking for read access. However
* it can make sense to ask for both if write access is also
* requested so that the application can immediately read
* back what it just wrote. To work around the restriction
* in GL we just recreate the buffer storage in that case
* which is an alternative way to indicate that the buffer
* contents can be discarded. */
if ((access & COGL_BUFFER_ACCESS_READ))
should_recreate_store = TRUE;
else
gl_access |= GL_MAP_INVALIDATE_BUFFER_BIT;
}
else if ((hints & COGL_BUFFER_MAP_HINT_DISCARD_RANGE) &&
!(access & COGL_BUFFER_ACCESS_READ))
gl_access |= GL_MAP_INVALIDATE_RANGE_BIT;
if (should_recreate_store)
{
if (!recreate_store (buffer, error))
{
_cogl_buffer_gl_unbind (buffer);
return NULL;
}
}
/* Clear any GL errors */
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
data = ctx->glMapBufferRange (gl_target,
offset,
size,
gl_access);
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
{
_cogl_buffer_gl_unbind (buffer);
return NULL;
}
_COGL_RETURN_VAL_IF_FAIL (data != NULL, NULL);
}
else
{
/* create an empty store if we don't have one yet. creating the store
* lazily allows the user of the CoglBuffer to set a hint before the
* store is created. */
if (!buffer->store_created ||
(hints & COGL_BUFFER_MAP_HINT_DISCARD))
{
if (!recreate_store (buffer, error))
{
_cogl_buffer_gl_unbind (buffer);
return NULL;
}
}
/* Clear any GL errors */
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
data = ctx->glMapBuffer (gl_target,
_cogl_buffer_access_to_gl_enum (access));
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
{
_cogl_buffer_gl_unbind (buffer);
return NULL;
}
_COGL_RETURN_VAL_IF_FAIL (data != NULL, NULL);
data += offset;
}
if (data)
buffer->flags |= COGL_BUFFER_FLAG_MAPPED;
_cogl_buffer_gl_unbind (buffer);
return data;
}
static CoglBool
allocate_with_size (CoglTextureRectangle *tex_rect,
CoglTextureLoader *loader,
CoglError **error)
{
CoglTexture *tex = COGL_TEXTURE (tex_rect);
CoglContext *ctx = tex->context;
CoglPixelFormat internal_format;
int width = loader->src.sized.width;
int height = loader->src.sized.height;
GLenum gl_intformat;
GLenum gl_format;
GLenum gl_type;
GLenum gl_error;
GLenum gl_texture;
internal_format =
_cogl_texture_determine_internal_format (tex, COGL_PIXEL_FORMAT_ANY);
if (!_cogl_texture_rectangle_can_create (ctx,
width,
height,
internal_format,
error))
return FALSE;
ctx->driver_vtable->pixel_format_to_gl (ctx,
internal_format,
&gl_intformat,
&gl_format,
&gl_type);
gl_texture =
ctx->texture_driver->gen (ctx,
GL_TEXTURE_RECTANGLE_ARB,
internal_format);
_cogl_bind_gl_texture_transient (GL_TEXTURE_RECTANGLE_ARB,
gl_texture,
tex_rect->is_foreign);
/* Clear any GL errors */
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
ctx->glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, gl_intformat,
width, height, 0, gl_format, gl_type, NULL);
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
{
GE( ctx, glDeleteTextures (1, &gl_texture) );
return FALSE;
}
tex_rect->internal_format = internal_format;
tex_rect->gl_texture = gl_texture;
tex_rect->gl_format = gl_intformat;
_cogl_texture_set_allocated (COGL_TEXTURE (tex_rect),
internal_format, width, height);
return TRUE;
}
