static void *
_cogl_buffer_bind_no_create (CoglBuffer *buffer,
CoglBufferBindTarget target)
{
CoglContext *ctx = buffer->context;
_COGL_RETURN_VAL_IF_FAIL (buffer != NULL, NULL);
/* Don't allow binding the buffer to multiple targets at the same time */
_COGL_RETURN_VAL_IF_FAIL (ctx->current_buffer[buffer->last_target] != buffer,
NULL);
/* Don't allow nesting binds to the same target */
_COGL_RETURN_VAL_IF_FAIL (ctx->current_buffer[target] == NULL, NULL);
buffer->last_target = target;
ctx->current_buffer[target] = buffer;
if (buffer->flags & COGL_BUFFER_FLAG_BUFFER_OBJECT)
{
GLenum gl_target = convert_bind_target_to_gl_target (buffer->last_target);
GE( ctx, glBindBuffer (gl_target, buffer->gl_handle) );
return NULL;
}
else
return buffer->data;
}
CoglTexture2D *
cogl_texture_2d_gl_new_from_foreign (CoglContext *ctx,
unsigned int gl_handle,
int width,
int height,
CoglPixelFormat format)
{
CoglTextureLoader *loader;
/* NOTE: width, height and internal format are not queriable
* in GLES, hence such a function prototype.
*/
/* Note: We always trust the given width and height without querying
* the texture object because the user may be creating a Cogl
* texture for a texture_from_pixmap object where glTexImage2D may
* not have been called and the texture_from_pixmap spec doesn't
* clarify that it is reliable to query back the size from OpenGL.
*/
/* Assert it is a valid GL texture object */
_COGL_RETURN_VAL_IF_FAIL (ctx->glIsTexture (gl_handle), FALSE);
/* Validate width and height */
_COGL_RETURN_VAL_IF_FAIL (width > 0 && height > 0, NULL);
loader = _cogl_texture_create_loader ();
loader->src_type = COGL_TEXTURE_SOURCE_TYPE_GL_FOREIGN;
loader->src.gl_foreign.gl_handle = gl_handle;
loader->src.gl_foreign.width = width;
loader->src.gl_foreign.height = height;
loader->src.gl_foreign.format = format;
return _cogl_texture_2d_create_base (ctx, width, height, format, loader);
}
/* NB: The reason we require the width, height and format to be passed
* even though they may seem redundant is because GLES 1/2 don't
* provide a way to query these properties. */
CoglTexture2D *
_cogl_egl_texture_2d_new_from_image (CoglContext *ctx,
int width,
int height,
CoglPixelFormat format,
EGLImageKHR image,
CoglError **error)
{
CoglTextureLoader *loader;
_COGL_RETURN_VAL_IF_FAIL (_cogl_context_get_winsys (ctx)->constraints &
COGL_RENDERER_CONSTRAINT_USES_EGL,
NULL);
_COGL_RETURN_VAL_IF_FAIL (_cogl_has_private_feature
(ctx,
COGL_PRIVATE_FEATURE_TEXTURE_2D_FROM_EGL_IMAGE),
NULL);
loader = _cogl_texture_create_loader ();
loader->src_type = COGL_TEXTURE_SOURCE_TYPE_EGL_IMAGE;
loader->src.egl_image.image = image;
loader->src.egl_image.width = width;
loader->src.egl_image.height = height;
loader->src.egl_image.format = format;
return _cogl_texture_2d_create_base (ctx, width, height, format, loader);
}
CoglTexture *
cogl_texture_new_from_data (CoglContext *ctx,
int width,
int height,
CoglTextureFlags flags,
CoglPixelFormat format,
CoglPixelFormat internal_format,
int rowstride,
const uint8_t *data,
CoglError **error)
{
CoglBitmap *bmp;
CoglTexture *tex;
_COGL_RETURN_VAL_IF_FAIL (format != COGL_PIXEL_FORMAT_ANY, NULL);
_COGL_RETURN_VAL_IF_FAIL (data != NULL, NULL);
/* Rowstride from width if not given */
if (rowstride == 0)
rowstride = width * _cogl_pixel_format_get_bytes_per_pixel (format);
/* Wrap the data into a bitmap */
bmp = cogl_bitmap_new_for_data (ctx,
width, height,
format,
rowstride,
(uint8_t *) data);
tex = cogl_texture_new_from_bitmap (bmp, flags, internal_format, error);
cogl_object_unref (bmp);
return tex;
}
CoglBitmap *
cogl_bitmap_new_with_size (CoglContext *context,
unsigned int width,
unsigned int height,
CoglPixelFormat format)
{
CoglPixelBuffer *pixel_buffer;
CoglBitmap *bitmap;
unsigned int rowstride;
/* creating a buffer to store "any" format does not make sense */
_COGL_RETURN_VAL_IF_FAIL (format != COGL_PIXEL_FORMAT_ANY, NULL);
/* for now we fallback to cogl_pixel_buffer_new, later, we could ask
* libdrm a tiled buffer for instance */
rowstride = width * _cogl_pixel_format_get_bytes_per_pixel (format);
pixel_buffer =
cogl_pixel_buffer_new (context,
height * rowstride,
NULL, /* data */
NULL); /* don't catch errors */
_COGL_RETURN_VAL_IF_FAIL (pixel_buffer != NULL, NULL);
bitmap = cogl_bitmap_new_from_buffer (COGL_BUFFER (pixel_buffer),
format,
width, height,
rowstride,
0 /* offset */);
cogl_object_unref (pixel_buffer);
return bitmap;
}
/* NB: The reason we require the width, height and format to be passed
* even though they may seem redundant is because GLES 1/2 don't
* provide a way to query these properties. */
CoglTexture2D *
_cogl_egl_texture_2d_new_from_image (CoglContext *ctx,
int width,
int height,
CoglPixelFormat format,
EGLImageKHR image,
CoglError **error)
{
_COGL_RETURN_VAL_IF_FAIL (_cogl_context_get_winsys (ctx)->constraints &
COGL_RENDERER_CONSTRAINT_USES_EGL,
NULL);
_COGL_RETURN_VAL_IF_FAIL (_cogl_has_private_feature
(ctx,
COGL_PRIVATE_FEATURE_TEXTURE_2D_FROM_EGL_IMAGE),
NULL);
if (ctx->driver_vtable->egl_texture_2d_new_from_image)
return ctx->driver_vtable->egl_texture_2d_new_from_image (ctx,
width,
height,
format,
image,
error);
else
{
_cogl_set_error (error,
COGL_SYSTEM_ERROR,
COGL_SYSTEM_ERROR_UNSUPPORTED,
"Creating 2D textures from EGL images is not "
"supported by the current driver");
return NULL;
}
}
CoglTextureRectangle *
cogl_texture_rectangle_new_from_foreign (CoglContext *ctx,
unsigned int gl_handle,
int width,
int height,
CoglPixelFormat format)
{
CoglTextureLoader *loader;
/* NOTE: width, height and internal format are not queriable in
* GLES, hence such a function prototype. Also in the case of full
* opengl the user may be creating a Cogl texture for a
* texture_from_pixmap object where glTexImage2D may not have been
* called and the texture_from_pixmap spec doesn't clarify that it
* is reliable to query back the size from OpenGL.
*/
/* Assert that it is a valid GL texture object */
_COGL_RETURN_VAL_IF_FAIL (ctx->glIsTexture (gl_handle), NULL);
/* Validate width and height */
_COGL_RETURN_VAL_IF_FAIL (width > 0 && height > 0, NULL);
loader = _cogl_texture_create_loader ();
loader->src_type = COGL_TEXTURE_SOURCE_TYPE_GL_FOREIGN;
loader->src.gl_foreign.gl_handle = gl_handle;
loader->src.gl_foreign.width = width;
loader->src.gl_foreign.height = height;
loader->src.gl_foreign.format = format;
return _cogl_texture_rectangle_create_base (ctx, width, height,
format, loader);
}
CoglBool
cogl_color_equal (const void *v1, const void *v2)
{
_COGL_RETURN_VAL_IF_FAIL (v1 != NULL, FALSE);
_COGL_RETURN_VAL_IF_FAIL (v2 != NULL, FALSE);
return memcmp (v1, v2, sizeof (CoglColor)) == 0;
}
CoglBool
cogl_vector4_equal (const void *v0, const void *v1)
{
_COGL_RETURN_VAL_IF_FAIL (v1 != NULL, FALSE);
_COGL_RETURN_VAL_IF_FAIL (v2 != NULL, FALSE);
return memcmp (v1, v2, sizeof (float) * 4) == 0 ? TRUE : FALSE;
}
CoglBitmap *
cogl_bitmap_new_from_file (CoglContext *ctx,
const char *filename,
CoglError **error)
{
_COGL_RETURN_VAL_IF_FAIL (filename != NULL, NULL);
_COGL_RETURN_VAL_IF_FAIL (error == NULL || *error == NULL, NULL);
return _cogl_bitmap_from_file (ctx, filename, error);
}
CoglBitmap *
cogl_android_bitmap_new_from_asset (CoglContext *ctx,
AAssetManager *manager,
const char *filename,
CoglError **error)
{
_COGL_RETURN_VAL_IF_FAIL (ctx != NULL, NULL);
_COGL_RETURN_VAL_IF_FAIL (manager != NULL, NULL);
_COGL_RETURN_VAL_IF_FAIL (filename != NULL, NULL);
_COGL_RETURN_VAL_IF_FAIL (error == NULL || *error == NULL, NULL);
return _cogl_android_bitmap_new_from_asset (ctx, manager, filename, error);
}
CoglSubTexture *
cogl_sub_texture_new (CoglContext *ctx,
CoglTexture *next_texture,
int sub_x, int sub_y,
int sub_width, int sub_height)
{
CoglTexture *full_texture;
CoglSubTexture *sub_tex;
CoglTexture *tex;
unsigned int next_width, next_height;
next_width = cogl_texture_get_width (next_texture);
next_height = cogl_texture_get_height (next_texture);
/* The region must specify a non-zero subset of the full texture */
_COGL_RETURN_VAL_IF_FAIL (sub_x >= 0 && sub_y >= 0, NULL);
_COGL_RETURN_VAL_IF_FAIL (sub_width > 0 && sub_height > 0, NULL);
_COGL_RETURN_VAL_IF_FAIL (sub_x + sub_width <= next_width, NULL);
_COGL_RETURN_VAL_IF_FAIL (sub_y + sub_height <= next_height, NULL);
sub_tex = g_new (CoglSubTexture, 1);
tex = COGL_TEXTURE (sub_tex);
_cogl_texture_init (tex, ctx, sub_width, sub_height,
_cogl_texture_get_format (next_texture),
NULL, /* no loader */
&cogl_sub_texture_vtable);
/* If the next texture is also a sub texture we can avoid one level
of indirection by referencing the full texture of that texture
instead. */
if (cogl_is_sub_texture (next_texture))
{
CoglSubTexture *other_sub_tex = COGL_SUB_TEXTURE (next_texture);
full_texture = other_sub_tex->full_texture;
sub_x += other_sub_tex->sub_x;
sub_y += other_sub_tex->sub_y;
}
else
full_texture = next_texture;
sub_tex->next_texture = cogl_object_ref (next_texture);
sub_tex->full_texture = cogl_object_ref (full_texture);
sub_tex->sub_x = sub_x;
sub_tex->sub_y = sub_y;
return _cogl_sub_texture_object_new (sub_tex);
}
CoglBool
cogl_buffer_set_data (CoglBuffer *buffer,
size_t offset,
const void *data,
size_t size)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_buffer (buffer), FALSE);
_COGL_RETURN_VAL_IF_FAIL ((offset + size) <= buffer->size, FALSE);
if (G_UNLIKELY (buffer->immutable_ref))
warn_about_midscene_changes ();
return buffer->vtable.set_data (buffer, offset, data, size);
}
CoglBool
cogl_pipeline_set_depth_state (CoglPipeline *pipeline,
const CoglDepthState *depth_state,
CoglError **error)
{
CoglPipelineState state = COGL_PIPELINE_STATE_DEPTH;
CoglPipeline *authority;
CoglDepthState *orig_state;
_COGL_GET_CONTEXT (ctx, FALSE);
_COGL_RETURN_VAL_IF_FAIL (cogl_is_pipeline (pipeline), FALSE);
_COGL_RETURN_VAL_IF_FAIL (depth_state->magic == COGL_DEPTH_STATE_MAGIC, FALSE);
authority = _cogl_pipeline_get_authority (pipeline, state);
orig_state = &authority->big_state->depth_state;
if (orig_state->test_enabled == depth_state->test_enabled &&
orig_state->write_enabled == depth_state->write_enabled &&
orig_state->test_function == depth_state->test_function &&
orig_state->range_near == depth_state->range_near &&
orig_state->range_far == depth_state->range_far)
return TRUE;
if (ctx->driver == COGL_DRIVER_GLES1 &&
(depth_state->range_near != 0 ||
depth_state->range_far != 1))
{
_cogl_set_error (error,
COGL_SYSTEM_ERROR,
COGL_SYSTEM_ERROR_UNSUPPORTED,
"glDepthRange not available on GLES 1");
return FALSE;
}
/* - Flush journal primitives referencing the current state.
* - Make sure the pipeline has no dependants so it may be modified.
* - If the pipeline isn't currently an authority for the state being
* changed, then initialize that state from the current authority.
*/
_cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
pipeline->big_state->depth_state = *depth_state;
_cogl_pipeline_update_authority (pipeline, authority, state,
_cogl_pipeline_depth_state_equal);
return TRUE;
}
CoglBool
cogl_vector3_equal_with_epsilon (const float *vector0,
const float *vector1,
float epsilon)
{
_COGL_RETURN_VAL_IF_FAIL (vector0 != NULL, FALSE);
_COGL_RETURN_VAL_IF_FAIL (vector1 != NULL, FALSE);
if (fabsf (vector0[X] - vector1[X]) < epsilon &&
fabsf (vector0[Y] - vector1[Y]) < epsilon &&
fabsf (vector0[Z] - vector1[Z]) < epsilon)
return TRUE;
else
return FALSE;
}
gboolean
_cogl_texture_2d_gl_allocate (CoglTexture *tex,
CoglError **error)
{
CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
CoglTextureLoader *loader = tex->loader;
_COGL_RETURN_VAL_IF_FAIL (loader, FALSE);
switch (loader->src_type)
{
case COGL_TEXTURE_SOURCE_TYPE_SIZED:
return allocate_with_size (tex_2d, loader, error);
case COGL_TEXTURE_SOURCE_TYPE_BITMAP:
return allocate_from_bitmap (tex_2d, loader, error);
case COGL_TEXTURE_SOURCE_TYPE_EGL_IMAGE:
#if defined (COGL_HAS_EGL_SUPPORT) && defined (EGL_KHR_image_base)
return allocate_from_egl_image (tex_2d, loader, error);
#else
g_return_val_if_reached (FALSE);
#endif
case COGL_TEXTURE_SOURCE_TYPE_GL_FOREIGN:
return allocate_from_gl_foreign (tex_2d, loader, error);
case COGL_TEXTURE_SOURCE_TYPE_EGL_IMAGE_EXTERNAL:
#if defined (COGL_HAS_EGL_SUPPORT)
return allocate_custom_egl_image_external (tex_2d, loader, error);
#else
g_return_val_if_reached (FALSE);
#endif
}
g_return_val_if_reached (FALSE);
}
CoglBitmap *
_cogl_bitmap_from_file (const char *filename,
GError **error)
{
static CoglUserDataKey bitmap_data_key;
CoglBitmap *bmp;
int stb_pixel_format;
int width;
int height;
uint8_t *pixels;
_COGL_GET_CONTEXT (ctx, NULL);
_COGL_RETURN_VAL_IF_FAIL (error == NULL || *error == NULL, FALSE);
/* Load from file using stb */
pixels = stbi_load (filename,
&width, &height, &stb_pixel_format,
STBI_rgb_alpha);
if (pixels == NULL)
return FALSE;
/* Store bitmap info */
bmp = cogl_bitmap_new_for_data (ctx,
width, height,
COGL_PIXEL_FORMAT_RGBA_8888,
width * 4, /* rowstride */
pixels);
/* Register a destroy function so the pixel data will be freed
automatically when the bitmap object is destroyed */
cogl_object_set_user_data (COGL_OBJECT (bmp), &bitmap_data_key, pixels, free);
return bmp;
}
CoglPathFillRule
cogl_path_get_fill_rule (CoglPath *path)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_path (path), COGL_PATH_FILL_RULE_NON_ZERO);
return path->data->fill_rule;
}
int
cogl_sdl_renderer_get_event_type (CoglRenderer *renderer)
{
_COGL_RETURN_VAL_IF_FAIL (renderer->sdl_event_type_set, SDL_USEREVENT);
return renderer->sdl_event_type;
}
static CoglBool
toggle_texcood_attribute_enabled_cb (int bit_num, void *user_data)
{
ForeachChangedBitState *state = user_data;
CoglContext *context = state->context;
_COGL_RETURN_VAL_IF_FAIL ((context->private_feature_flags &
COGL_PRIVATE_FEATURE_FIXED_FUNCTION),
FALSE);
#if defined (HAVE_COGL_GL) || defined (HAVE_COGL_GLES)
{
CoglBool enabled = _cogl_bitmask_get (state->new_bits, bit_num);
GE( context, glClientActiveTexture (GL_TEXTURE0 + bit_num) );
if (enabled)
GE( context, glEnableClientState (GL_TEXTURE_COORD_ARRAY) );
else
GE( context, glDisableClientState (GL_TEXTURE_COORD_ARRAY) );
}
#endif
return TRUE;
}
CoglTexture *
cogl_texture_new_from_file (const char *filename,
CoglTextureFlags flags,
CoglPixelFormat internal_format,
CoglError **error)
{
CoglBitmap *bmp;
CoglTexture *texture = NULL;
_COGL_GET_CONTEXT (ctx, NULL);
_COGL_RETURN_VAL_IF_FAIL (error == NULL || *error == NULL, NULL);
bmp = cogl_bitmap_new_from_file (filename, error);
if (bmp == NULL)
return NULL;
texture = _cogl_texture_new_from_bitmap (bmp, flags,
internal_format,
TRUE, /* can convert in-place */
error);
cogl_object_unref (bmp);
return texture;
}
CoglVerticesMode
cogl_primitive_get_mode (CoglPrimitive *primitive)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_primitive (primitive), 0);
return primitive->mode;
}
CoglPrimitive *
cogl_primitive_new_with_attributes (CoglVerticesMode mode,
int n_vertices,
CoglAttribute **attributes,
int n_attributes)
{
CoglPrimitive *primitive;
int i;
primitive = g_slice_alloc (sizeof (CoglPrimitive) +
sizeof (CoglAttribute *) * (n_attributes - 1));
primitive->mode = mode;
primitive->first_vertex = 0;
primitive->n_vertices = n_vertices;
primitive->indices = NULL;
primitive->immutable_ref = 0;
primitive->n_attributes = n_attributes;
primitive->n_embedded_attributes = n_attributes;
primitive->attributes = &primitive->embedded_attribute;
for (i = 0; i < n_attributes; i++)
{
CoglAttribute *attribute = attributes[i];
cogl_object_ref (attribute);
_COGL_RETURN_VAL_IF_FAIL (cogl_is_attribute (attribute), NULL);
primitive->attributes[i] = attribute;
}
return _cogl_primitive_object_new (primitive);
}
int
cogl_primitive_get_first_vertex (CoglPrimitive *primitive)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_primitive (primitive), 0);
return primitive->first_vertex;
}
int
cogl_primitive_get_n_vertices (CoglPrimitive *primitive)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_primitive (primitive), 0);
return primitive->n_vertices;
}
EGLImageKHR
_cogl_egl_create_image (CoglContext *ctx,
EGLenum target,
EGLClientBuffer buffer,
const EGLint *attribs)
{
CoglDisplayEGL *egl_display = ctx->display->winsys;
CoglRendererEGL *egl_renderer = ctx->display->renderer->winsys;
EGLContext egl_ctx;
_COGL_RETURN_VAL_IF_FAIL (egl_renderer->pf_eglCreateImage, EGL_NO_IMAGE_KHR);
/* The EGL_KHR_image_pixmap spec explicitly states that EGL_NO_CONTEXT must
* always be used in conjunction with the EGL_NATIVE_PIXMAP_KHR target */
#ifdef EGL_KHR_image_pixmap
if (target == EGL_NATIVE_PIXMAP_KHR)
egl_ctx = EGL_NO_CONTEXT;
else
#endif
egl_ctx = egl_display->egl_context;
return egl_renderer->pf_eglCreateImage (egl_renderer->edpy,
egl_ctx,
target,
buffer,
attribs);
}
static gboolean
_cogl_winsys_context_init (CoglContext *context, GError **error)
{
CoglRenderer *renderer = context->display->renderer;
CoglDisplayEGL *egl_display = context->display->winsys;
CoglRendererEGL *egl_renderer = renderer->winsys;
context->winsys = g_new0 (CoglContextEGL, 1);
_COGL_RETURN_VAL_IF_FAIL (egl_display->egl_context, FALSE);
memset (context->winsys_features, 0, sizeof (context->winsys_features));
check_egl_extensions (renderer);
if (!_cogl_context_update_features (context, error))
return FALSE;
if (egl_renderer->private_features & COGL_EGL_WINSYS_FEATURE_SWAP_REGION)
{
COGL_FLAGS_SET (context->winsys_features,
COGL_WINSYS_FEATURE_SWAP_REGION, TRUE);
COGL_FLAGS_SET (context->winsys_features,
COGL_WINSYS_FEATURE_SWAP_REGION_THROTTLE, TRUE);
}
if (egl_renderer->platform_vtable->context_init &&
!egl_renderer->platform_vtable->context_init (context, error))
return FALSE;
return TRUE;
}
Display *
cogl_xlib_renderer_get_foreign_display (CoglRenderer *renderer)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_renderer (renderer), NULL);
return renderer->foreign_xdpy;
}
CoglWinsysID
cogl_renderer_get_winsys_id (CoglRenderer *renderer)
{
_COGL_RETURN_VAL_IF_FAIL (renderer->connected, 0);
return renderer->winsys_vtable->id;
}
CoglDriver
cogl_renderer_get_driver (CoglRenderer *renderer)
{
_COGL_RETURN_VAL_IF_FAIL (renderer->connected, 0);
return renderer->driver;
}
