[cogl/wip/rib/master-next: 22/44] features: Support more than 32 features!
- From: Robert Bragg <rbragg src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [cogl/wip/rib/master-next: 22/44] features: Support more than 32 features!
- Date: Fri, 28 Oct 2011 14:15:40 +0000 (UTC)
commit 7e183496da28947d6856eaf08727ba05e01dad7f
Author: Robert Bragg <robert linux intel com>
Date: Wed Oct 12 22:31:12 2011 +0100
features: Support more than 32 features!
Currently features are represented as bits in a 32bit mask so we
obviously can't have more than 32 features with that approach. The new
approach is to use the COGL_FLAGS_ macros which lets us handle bitmasks
without a size limit and we change the public api to accept individual
feature enums instead of a mask. This way there is no limit on the
number of features we can add to Cogl.
Instead of using cogl_features_available() there is a new
cogl_has_feature() function and for checking multiple features there is
cogl_has_features() which takes a zero terminated vararg list of
features.
In addition to being able to check for individual features this also
adds a way to query all the features currently available via
cogl_foreach_feature() which will call a callback for each feature.
Since the new functions take an explicit context pointer there is also
no longer any ambiguity over when users can first start to query
features.
cogl/cogl-atlas-texture.c | 2 +-
cogl/cogl-buffer.c | 4 +-
cogl/cogl-context-private.h | 3 +-
cogl/cogl-context.c | 30 +++-
cogl/cogl-depth-state.h | 4 +-
cogl/cogl-framebuffer.c | 6 +-
cogl/cogl-pipeline-fragend-arbfp.c | 2 +-
cogl/cogl-pipeline-fragend-glsl.c | 2 +-
cogl/cogl-pipeline-layer-state.c | 4 +-
cogl/cogl-pipeline-opengl.c | 6 +-
cogl/cogl-pipeline-vertend-glsl.c | 2 +-
cogl/cogl-shader.c | 2 +-
cogl/cogl-texture-2d-sliced.c | 2 +-
cogl/cogl-texture-2d.c | 8 +-
cogl/cogl-texture-2d.h | 12 +-
cogl/cogl-texture-3d.c | 8 +-
cogl/cogl-texture-rectangle.c | 2 +-
cogl/cogl-texture.c | 2 +-
cogl/cogl.c | 32 ++++
cogl/cogl.h | 150 ++++++++++++++++++++
cogl/driver/gl/cogl-gl.c | 49 ++++++-
cogl/driver/gl/cogl-texture-driver-gl.c | 4 +-
cogl/driver/gles/cogl-gles.c | 62 +++++++--
cogl/winsys/cogl-winsys-egl.c | 2 +
cogl/winsys/cogl-winsys-glx.c | 8 +-
cogl/winsys/cogl-winsys-wgl.c | 2 +
.../cogl-2.0-experimental-sections.txt | 7 +
27 files changed, 353 insertions(+), 64 deletions(-)
---
diff --git a/cogl/cogl-atlas-texture.c b/cogl/cogl-atlas-texture.c
index 042cd7b..3fc459b 100644
--- a/cogl/cogl-atlas-texture.c
+++ b/cogl/cogl-atlas-texture.c
@@ -657,7 +657,7 @@ _cogl_atlas_texture_new_with_size (unsigned int width,
/* If we can't use FBOs then it will be too slow to migrate textures
and we shouldn't use the atlas */
- if (!cogl_features_available (COGL_FEATURE_OFFSCREEN))
+ if (!cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN))
return COGL_INVALID_HANDLE;
COGL_NOTE (ATLAS, "Adding texture of size %ix%i", width, height);
diff --git a/cogl/cogl-buffer.c b/cogl/cogl-buffer.c
index 7a6c77a..9fff90a 100644
--- a/cogl/cogl-buffer.c
+++ b/cogl/cogl-buffer.c
@@ -134,10 +134,10 @@ bo_map (CoglBuffer *buffer,
_COGL_GET_CONTEXT (ctx, NULL);
if ((access & COGL_BUFFER_ACCESS_READ) &&
- !cogl_features_available (COGL_FEATURE_MAP_BUFFER_FOR_READ))
+ !cogl_has_feature (ctx, COGL_FEATURE_ID_MAP_BUFFER_FOR_READ))
return NULL;
if ((access & COGL_BUFFER_ACCESS_WRITE) &&
- !cogl_features_available (COGL_FEATURE_MAP_BUFFER_FOR_WRITE))
+ !cogl_has_feature (ctx, COGL_FEATURE_ID_MAP_BUFFER_FOR_WRITE))
return NULL;
target = buffer->last_target;
diff --git a/cogl/cogl-context-private.h b/cogl/cogl-context-private.h
index 3981f7b..3b40b36 100644
--- a/cogl/cogl-context-private.h
+++ b/cogl/cogl-context-private.h
@@ -63,7 +63,8 @@ struct _CoglContext
const CoglTextureDriver *texture_driver;
/* Features cache */
- CoglFeatureFlags feature_flags;
+ unsigned int features[COGL_FLAGS_N_INTS_FOR_SIZE (_COGL_N_FEATURE_IDS)];
+ CoglFeatureFlags feature_flags; /* legacy/deprecated feature flags */
CoglPrivateFeatureFlags private_feature_flags;
CoglHandle default_pipeline;
diff --git a/cogl/cogl-context.c b/cogl/cogl-context.c
index 452c675..ebedd44 100644
--- a/cogl/cogl-context.c
+++ b/cogl/cogl-context.c
@@ -80,16 +80,31 @@ _cogl_init_feature_overrides (CoglContext *ctx)
ctx->private_feature_flags &= ~COGL_PRIVATE_FEATURE_PBOS;
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_DISABLE_ARBFP)))
- ctx->feature_flags &= ~COGL_FEATURE_SHADERS_ARBFP;
+ {
+ ctx->feature_flags &= ~COGL_FEATURE_SHADERS_ARBFP;
+ COGL_FLAGS_SET (ctx->features, COGL_FEATURE_ID_ARBFP, FALSE);
+ }
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_DISABLE_GLSL)))
- ctx->feature_flags &= ~COGL_FEATURE_SHADERS_GLSL;
+ {
+ ctx->feature_flags &= ~COGL_FEATURE_SHADERS_GLSL;
+ COGL_FLAGS_SET (ctx->features, COGL_FEATURE_ID_GLSL, FALSE);
+ }
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_DISABLE_NPOT_TEXTURES)))
- ctx->feature_flags &= ~(COGL_FEATURE_TEXTURE_NPOT |
- COGL_FEATURE_TEXTURE_NPOT_BASIC |
- COGL_FEATURE_TEXTURE_NPOT_MIPMAP |
- COGL_FEATURE_TEXTURE_NPOT_REPEAT);
+ {
+ ctx->feature_flags &= ~(COGL_FEATURE_TEXTURE_NPOT |
+ COGL_FEATURE_TEXTURE_NPOT_BASIC |
+ COGL_FEATURE_TEXTURE_NPOT_MIPMAP |
+ COGL_FEATURE_TEXTURE_NPOT_REPEAT);
+ COGL_FLAGS_SET (ctx->features, COGL_FEATURE_ID_TEXTURE_NPOT, FALSE);
+ COGL_FLAGS_SET (ctx->features,
+ COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, FALSE);
+ COGL_FLAGS_SET (ctx->features,
+ COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP, FALSE);
+ COGL_FLAGS_SET (ctx->features,
+ COGL_FEATURE_ID_TEXTURE_NPOT_REPEAT, FALSE);
+ }
}
const CoglWinsysVtable *
@@ -148,6 +163,7 @@ cogl_context_new (CoglDisplay *display,
_context = context;
/* Init default values */
+ memset (context->features, 0, sizeof (context->features));
context->feature_flags = 0;
context->private_feature_flags = 0;
@@ -378,7 +394,7 @@ cogl_context_new (CoglDisplay *display,
coords enabled. We don't need to do this for GLES2 because point
sprites are handled using a builtin varying in the shader. */
if (_context->driver != COGL_DRIVER_GLES2 &&
- cogl_features_available (COGL_FEATURE_POINT_SPRITE))
+ cogl_has_feature (context, COGL_FEATURE_ID_POINT_SPRITE))
GE (context, glEnable (GL_POINT_SPRITE));
return _cogl_context_object_new (context);
diff --git a/cogl/cogl-depth-state.h b/cogl/cogl-depth-state.h
index 89dcbe6..0fff9a0 100644
--- a/cogl/cogl-depth-state.h
+++ b/cogl/cogl-depth-state.h
@@ -219,8 +219,8 @@ cogl_depth_state_get_test_function (CoglDepthState *state);
* using GLES 1 drivers) then if you don't use the default range
* values you will get an error reported when calling
* cogl_pipeline_set_depth_state (). You can check ahead of time for
- * the %COGL_FEATURE_DEPTH_RANGE feature with
- * cogl_features_available() to know if this function will succeed.
+ * the %COGL_FEATURE_ID_DEPTH_RANGE feature with
+ * cogl_has_feature() to know if this function will succeed.
*
* By default normalized device coordinate depth values are mapped to
* the full range of depth buffer values, [0, 1].
diff --git a/cogl/cogl-framebuffer.c b/cogl/cogl-framebuffer.c
index 7f06548..8c47b59 100644
--- a/cogl/cogl-framebuffer.c
+++ b/cogl/cogl-framebuffer.c
@@ -629,7 +629,7 @@ _cogl_framebuffer_init_bits (CoglFramebuffer *framebuffer)
#ifdef HAVE_COGL_GL
if (ctx->driver == COGL_DRIVER_GL &&
- cogl_features_available (COGL_FEATURE_OFFSCREEN) &&
+ cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN) &&
framebuffer->type == COGL_FRAMEBUFFER_TYPE_OFFSCREEN)
{
GLenum attachment, pname;
@@ -701,7 +701,7 @@ _cogl_offscreen_new_to_texture_full (CoglTexture *texture,
_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
- if (!cogl_features_available (COGL_FEATURE_OFFSCREEN))
+ if (!cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN))
return COGL_INVALID_HANDLE;
/* Make texture is a valid texture object */
@@ -1469,7 +1469,7 @@ bind_gl_framebuffer (CoglContext *ctx,
_cogl_framebuffer_get_winsys (framebuffer);
winsys->onscreen_bind (COGL_ONSCREEN (framebuffer));
/* glBindFramebuffer is an an extension with OpenGL ES 1.1 */
- if (cogl_features_available (COGL_FEATURE_OFFSCREEN))
+ if (cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN))
GE (ctx, glBindFramebuffer (target, 0));
}
}
diff --git a/cogl/cogl-pipeline-fragend-arbfp.c b/cogl/cogl-pipeline-fragend-arbfp.c
index 3eda26a..0ee035f 100644
--- a/cogl/cogl-pipeline-fragend-arbfp.c
+++ b/cogl/cogl-pipeline-fragend-arbfp.c
@@ -163,7 +163,7 @@ _cogl_pipeline_fragend_arbfp_start (CoglPipeline *pipeline,
/* First validate that we can handle the current state using ARBfp
*/
- if (!cogl_features_available (COGL_FEATURE_SHADERS_ARBFP))
+ if (!cogl_has_feature (ctx, COGL_FEATURE_ID_ARBFP))
return FALSE;
/* TODO: support fog */
diff --git a/cogl/cogl-pipeline-fragend-glsl.c b/cogl/cogl-pipeline-fragend-glsl.c
index bc77095..4728236 100644
--- a/cogl/cogl-pipeline-fragend-glsl.c
+++ b/cogl/cogl-pipeline-fragend-glsl.c
@@ -190,7 +190,7 @@ _cogl_pipeline_fragend_glsl_start (CoglPipeline *pipeline,
_COGL_GET_CONTEXT (ctx, FALSE);
- if (!cogl_features_available (COGL_FEATURE_SHADERS_GLSL))
+ if (!cogl_has_feature (ctx, COGL_FEATURE_ID_GLSL))
return FALSE;
user_program = cogl_pipeline_get_user_program (pipeline);
diff --git a/cogl/cogl-pipeline-layer-state.c b/cogl/cogl-pipeline-layer-state.c
index c369c6d..d87772f 100644
--- a/cogl/cogl-pipeline-layer-state.c
+++ b/cogl/cogl-pipeline-layer-state.c
@@ -664,11 +664,13 @@ cogl_pipeline_set_layer_point_sprite_coords_enabled (CoglPipeline *pipeline,
CoglPipelineLayer *new;
CoglPipelineLayer *authority;
+ _COGL_GET_CONTEXT (ctx, FALSE);
+
g_return_val_if_fail (cogl_is_pipeline (pipeline), FALSE);
/* Don't allow point sprite coordinates to be enabled if the driver
doesn't support it */
- if (enable && !cogl_features_available (COGL_FEATURE_POINT_SPRITE))
+ if (enable && !cogl_has_feature (ctx, COGL_FEATURE_ID_POINT_SPRITE))
{
if (error)
{
diff --git a/cogl/cogl-pipeline-opengl.c b/cogl/cogl-pipeline-opengl.c
index 552fa49..361364e 100644
--- a/cogl/cogl-pipeline-opengl.c
+++ b/cogl/cogl-pipeline-opengl.c
@@ -687,8 +687,8 @@ get_max_activateable_texture_units (void)
defines the number of texture coordinates that can be
uploaded (but doesn't necessarily relate to how many texture
images can be sampled) */
- if (cogl_features_available (COGL_FEATURE_SHADERS_GLSL) ||
- cogl_features_available (COGL_FEATURE_SHADERS_ARBFP))
+ if (cogl_has_feature (ctx, COGL_FEATURE_ID_GLSL) ||
+ cogl_has_feature (ctx, COGL_FEATURE_ID_ARBFP))
/* Previously this code subtracted the value by one but there
was no explanation for why it did this and it doesn't seem
to make sense so it has been removed */
@@ -697,7 +697,7 @@ get_max_activateable_texture_units (void)
/* GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS is defined for GLSL but
not ARBfp */
- if (cogl_features_available (COGL_FEATURE_SHADERS_GLSL))
+ if (cogl_has_feature (ctx, COGL_FEATURE_ID_GLSL))
GE (ctx, glGetIntegerv (GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS,
values + n_values++));
}
diff --git a/cogl/cogl-pipeline-vertend-glsl.c b/cogl/cogl-pipeline-vertend-glsl.c
index ee1ec14..a3a460d 100644
--- a/cogl/cogl-pipeline-vertend-glsl.c
+++ b/cogl/cogl-pipeline-vertend-glsl.c
@@ -134,7 +134,7 @@ _cogl_pipeline_vertend_glsl_start (CoglPipeline *pipeline,
_COGL_GET_CONTEXT (ctx, FALSE);
- if (!cogl_features_available (COGL_FEATURE_SHADERS_GLSL))
+ if (!cogl_has_feature (ctx, COGL_FEATURE_ID_GLSL))
return FALSE;
user_program = cogl_pipeline_get_user_program (pipeline);
diff --git a/cogl/cogl-shader.c b/cogl/cogl-shader.c
index 4d662ab..b94f23d 100644
--- a/cogl/cogl-shader.c
+++ b/cogl/cogl-shader.c
@@ -203,7 +203,7 @@ _cogl_shader_set_source_with_boilerplate (GLuint shader_gl_handle,
}
if (ctx->driver == COGL_DRIVER_GLES2 &&
- cogl_features_available (COGL_FEATURE_TEXTURE_3D))
+ cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_3D))
{
static const char texture_3d_extension[] =
"#extension GL_OES_texture_3D : enable\n";
diff --git a/cogl/cogl-texture-2d-sliced.c b/cogl/cogl-texture-2d-sliced.c
index 8d922ec..03a2538 100644
--- a/cogl/cogl-texture-2d-sliced.c
+++ b/cogl/cogl-texture-2d-sliced.c
@@ -702,7 +702,7 @@ _cogl_texture_2d_sliced_slices_create (CoglContext *ctx,
int (*slices_for_size) (int, int, int, GArray*);
/* Initialize size of largest slice according to supported features */
- if (cogl_features_available (COGL_FEATURE_TEXTURE_NPOT))
+ if (cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_NPOT))
{
max_width = width;
max_height = height;
diff --git a/cogl/cogl-texture-2d.c b/cogl/cogl-texture-2d.c
index f800fcb..4697917 100644
--- a/cogl/cogl-texture-2d.c
+++ b/cogl/cogl-texture-2d.c
@@ -181,7 +181,7 @@ _cogl_texture_2d_can_create (unsigned int width,
/* If NPOT textures aren't supported then the size must be a power
of two */
- if (!cogl_features_available (COGL_FEATURE_TEXTURE_NPOT) &&
+ if (!cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_NPOT) &&
(!_cogl_util_is_pot (width) ||
!_cogl_util_is_pot (height)))
return FALSE;
@@ -329,7 +329,7 @@ _cogl_texture_2d_new_from_bitmap (CoglBitmap *bmp,
/* Keep a copy of the first pixel so that if glGenerateMipmap isn't
supported we can fallback to using GL_GENERATE_MIPMAP */
- if (!cogl_features_available (COGL_FEATURE_OFFSCREEN) &&
+ if (!cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN) &&
(data = _cogl_bitmap_map (dst_bmp,
COGL_BUFFER_ACCESS_READ, 0)))
{
@@ -771,7 +771,7 @@ _cogl_texture_2d_pre_paint (CoglTexture *tex, CoglTexturePrePaintFlags flags)
/* glGenerateMipmap is defined in the FBO extension. If it's not
available we'll fallback to temporarily enabling
GL_GENERATE_MIPMAP and reuploading the first pixel */
- if (cogl_features_available (COGL_FEATURE_OFFSCREEN))
+ if (cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN))
ctx->texture_driver->gl_generate_mipmaps (GL_TEXTURE_2D);
#if defined(HAVE_COGL_GLES) || defined(HAVE_COGL_GL)
else
@@ -825,7 +825,7 @@ _cogl_texture_2d_set_region (CoglTexture *tex,
/* If this touches the first pixel then we'll update our copy */
if (dst_x == 0 && dst_y == 0 &&
- !cogl_features_available (COGL_FEATURE_OFFSCREEN) &&
+ !cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN) &&
(data = _cogl_bitmap_map (bmp, COGL_BUFFER_ACCESS_READ, 0)))
{
CoglPixelFormat bpp =
diff --git a/cogl/cogl-texture-2d.h b/cogl/cogl-texture-2d.h
index 2a51664..8e2e710 100644
--- a/cogl/cogl-texture-2d.h
+++ b/cogl/cogl-texture-2d.h
@@ -49,8 +49,8 @@ G_BEGIN_DECLS
*
* You should be aware that many GPUs only support power of two sizes
* for #CoglTexture2D textures. You can check support for non power of
- * two textures by checking for the %COGL_FEATURE_TEXTURE_NPOT feature
- * via cogl_features_available ().
+ * two textures by checking for the %COGL_FEATURE_ID_TEXTURE_NPOT feature
+ * via cogl_has_feature().
*/
typedef struct _CoglTexture2D CoglTexture2D;
@@ -87,8 +87,8 @@ cogl_is_texture_2d (void *object);
*
* <note>Many GPUs only support power of two sizes for #CoglTexture2D
* textures. You can check support for non power of two textures by
- * checking for the %COGL_FEATURE_TEXTURE_NPOT feature via
- * cogl_features_available ().</note>
+ * checking for the %COGL_FEATURE_ID_TEXTURE_NPOT feature via
+ * cogl_has_feature().</note>
*
* Returns: A newly allocated #CoglTexture2D, or if the size is not
* supported (because it is too large or a non-power-of-two
@@ -132,8 +132,8 @@ cogl_texture_2d_new_with_size (CoglContext *ctx,
*
* <note>Many GPUs only support power of two sizes for #CoglTexture2D
* textures. You can check support for non power of two textures by
- * checking for the %COGL_FEATURE_TEXTURE_NPOT feature via
- * cogl_features_available ().</note>
+ * checking for the %COGL_FEATURE_ID_TEXTURE_NPOT feature via
+ * cogl_has_feature().</note>
*
* Returns: A newly allocated #CoglTexture2D, or if the size is not
* supported (because it is too large or a non-power-of-two
diff --git a/cogl/cogl-texture-3d.c b/cogl/cogl-texture-3d.c
index a64c3d2..58adee6 100644
--- a/cogl/cogl-texture-3d.c
+++ b/cogl/cogl-texture-3d.c
@@ -219,7 +219,7 @@ _cogl_texture_3d_can_create (unsigned int width,
_COGL_GET_CONTEXT (ctx, FALSE);
/* This should only happen on GLES */
- if (!cogl_features_available (COGL_FEATURE_TEXTURE_3D))
+ if (!cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_3D))
{
g_set_error (error,
COGL_ERROR,
@@ -230,7 +230,7 @@ _cogl_texture_3d_can_create (unsigned int width,
/* If NPOT textures aren't supported then the size must be a power
of two */
- if (!cogl_features_available (COGL_FEATURE_TEXTURE_NPOT) &&
+ if (!cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_NPOT) &&
(!_cogl_util_is_pot (width) ||
!_cogl_util_is_pot (height) ||
!_cogl_util_is_pot (depth)))
@@ -357,7 +357,7 @@ _cogl_texture_3d_new_from_bitmap (CoglBitmap *bmp,
/* Keep a copy of the first pixel so that if glGenerateMipmap isn't
supported we can fallback to using GL_GENERATE_MIPMAP */
- if (!cogl_features_available (COGL_FEATURE_OFFSCREEN) &&
+ if (!cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN) &&
(data = _cogl_bitmap_map (dst_bmp,
COGL_BUFFER_ACCESS_READ, 0)))
{
@@ -578,7 +578,7 @@ _cogl_texture_3d_pre_paint (CoglTexture *tex, CoglTexturePrePaintFlags flags)
/* glGenerateMipmap is defined in the FBO extension. If it's not
available we'll fallback to temporarily enabling
GL_GENERATE_MIPMAP and reuploading the first pixel */
- if (cogl_features_available (COGL_FEATURE_OFFSCREEN))
+ if (cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN))
ctx->texture_driver->gl_generate_mipmaps (GL_TEXTURE_3D);
#if defined (HAVE_COGL_GL) || defined (HAVE_COGL_GLES)
else if (ctx->driver != COGL_DRIVER_GLES2)
diff --git a/cogl/cogl-texture-rectangle.c b/cogl/cogl-texture-rectangle.c
index ca12fcb..558def6 100644
--- a/cogl/cogl-texture-rectangle.c
+++ b/cogl/cogl-texture-rectangle.c
@@ -198,7 +198,7 @@ _cogl_texture_rectangle_can_create (unsigned int width,
_COGL_GET_CONTEXT (ctx, FALSE);
- if (!cogl_features_available (COGL_FEATURE_TEXTURE_RECTANGLE))
+ if (!cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_RECTANGLE))
return FALSE;
ctx->texture_driver->pixel_format_to_gl (internal_format,
diff --git a/cogl/cogl-texture.c b/cogl/cogl-texture.c
index 7bf0d64..b2e0a40 100644
--- a/cogl/cogl-texture.c
+++ b/cogl/cogl-texture.c
@@ -1121,7 +1121,7 @@ get_texture_bits_via_offscreen (CoglTexture *texture,
_COGL_GET_CONTEXT (ctx, FALSE);
- if (!cogl_features_available (COGL_FEATURE_OFFSCREEN))
+ if (!cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN))
return FALSE;
framebuffer = _cogl_offscreen_new_to_texture_full
diff --git a/cogl/cogl.c b/cogl/cogl.c
index e81caa7..bee8170 100644
--- a/cogl/cogl.c
+++ b/cogl/cogl.c
@@ -319,6 +319,38 @@ cogl_features_available (CoglFeatureFlags features)
return (ctx->feature_flags & features) == features;
}
+gboolean
+cogl_has_feature (CoglContext *ctx, CoglFeatureID feature)
+{
+ return COGL_FLAGS_GET (ctx->features, feature);
+}
+
+gboolean
+cogl_has_features (CoglContext *ctx, ...)
+{
+ va_list args;
+ CoglFeatureID feature;
+
+ va_start (args, ctx);
+ while ((feature = va_arg (args, CoglFeatureID)))
+ if (!cogl_has_feature (ctx, feature))
+ return FALSE;
+ va_end (args);
+
+ return TRUE;
+}
+
+void
+cogl_foreach_feature (CoglContext *ctx,
+ CoglFeatureCallback callback,
+ void *user_data)
+{
+ int i;
+ for (i = 0; i < _COGL_N_FEATURE_IDS; i++)
+ if (COGL_FLAGS_GET (ctx->features, i))
+ callback (i, user_data);
+}
+
/* XXX: This function should either be replaced with one returning
* integers, or removed/deprecated and make the
* _cogl_framebuffer_get_viewport* functions public.
diff --git a/cogl/cogl.h b/cogl/cogl.h
index 08f4402..1f738a7 100644
--- a/cogl/cogl.h
+++ b/cogl/cogl.h
@@ -157,6 +157,156 @@ cogl_get_features (void);
gboolean
cogl_features_available (CoglFeatureFlags features);
+/* XXX: not guarded by the EXPERIMENTAL_2_0_API defines to avoid
+ * upsetting glib-mkenums, but this can still be considered implicitly
+ * experimental since it's only useable with experimental API... */
+/**
+ * CoglFeatureID:
+ * @COGL_FEATURE_ID_TEXTURE_NPOT_BASIC: The hardware supports non power
+ * of two textures, but you also need to check the
+ * %COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP and %COGL_FEATURE_ID_TEXTURE_NPOT_REPEAT
+ * features to know if the hardware supports npot texture mipmaps
+ * or repeat modes other than
+ * %COGL_RENDERER_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE respectively.
+ * @COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP: Mipmapping is supported in
+ * conjuntion with non power of two textures.
+ * @COGL_FEATURE_ID_TEXTURE_NPOT_REPEAT: Repeat modes other than
+ * %COGL_RENDERER_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE are supported by the
+ * hardware.
+ * @COGL_FEATURE_ID_TEXTURE_NPOT: Non power of two textures are supported
+ * by the hardware. This is a equivalent to the
+ * %COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, %COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP
+ * and %COGL_FEATURE_ID_TEXTURE_NPOT_REPEAT features combined.
+ * @COGL_FEATURE_ID_TEXTURE_RECTANGLE: Support for rectangular
+ * textures with non-normalized texture coordinates.
+ * @COGL_FEATURE_ID_TEXTURE_3D: 3D texture support
+ * @COGL_FEATURE_ID_OFFSCREEN: Offscreen rendering support
+ * @COGL_FEATURE_ID_OFFSCREEN_MULTISAMPLE: Multisample support for
+ * offscreen framebuffers
+ * @COGL_FEATURE_ID_ONSCREEN_MULTIPLE: Multiple onscreen framebuffers
+ * supported.
+ * @COGL_FEATURE_ID_GLSL: GLSL support
+ * @COGL_FEATURE_ID_ARBFP: ARBFP support
+ * @COGL_FEATURE_ID_UNSIGNED_INT_INDICES: Set if
+ * %COGL_RENDERER_INDICES_TYPE_UNSIGNED_INT is supported in
+ * cogl_indices_new().
+ * @COGL_FEATURE_ID_DEPTH_RANGE: cogl_pipeline_set_depth_range() support
+ * @COGL_FEATURE_ID_POINT_SPRITE: Whether
+ * cogl_pipeline_set_layer_point_sprite_coords_enabled() is supported.
+ * @COGL_FEATURE_ID_MAP_BUFFER_FOR_READ: Whether cogl_buffer_map() is
+ * supported with CoglBufferAccess including read support.
+ * @COGL_FEATURE_ID_MAP_BUFFER_FOR_WRITE: Whether cogl_buffer_map() is
+ * supported with CoglBufferAccess including write support.
+ *
+ *
+ * All the capabilities that can vary between different GPUs supported
+ * by Cogl. Applications that depend on any of these features should explicitly
+ * check for them using cogl_has_feature() or cogl_has_features().
+ *
+ * Since: 1.10
+ */
+typedef enum _CoglFeatureID
+{
+ COGL_FEATURE_ID_TEXTURE_NPOT_BASIC = 1,
+ COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP,
+ COGL_FEATURE_ID_TEXTURE_NPOT_REPEAT,
+ COGL_FEATURE_ID_TEXTURE_NPOT,
+ COGL_FEATURE_ID_TEXTURE_RECTANGLE,
+ COGL_FEATURE_ID_TEXTURE_3D,
+ COGL_FEATURE_ID_GLSL,
+ COGL_FEATURE_ID_ARBFP,
+ COGL_FEATURE_ID_OFFSCREEN,
+ COGL_FEATURE_ID_OFFSCREEN_MULTISAMPLE,
+ COGL_FEATURE_ID_ONSCREEN_MULTIPLE,
+ COGL_FEATURE_ID_UNSIGNED_INT_INDICES,
+ COGL_FEATURE_ID_DEPTH_RANGE,
+ COGL_FEATURE_ID_POINT_SPRITE,
+ COGL_FEATURE_ID_MAP_BUFFER_FOR_READ,
+ COGL_FEATURE_ID_MAP_BUFFER_FOR_WRITE,
+
+ /*< private > */
+ _COGL_N_FEATURE_IDS
+} CoglFeatureID;
+
+
+#ifdef COGL_ENABLE_EXPERIMENTAL_2_0_API
+
+#define cogl_has_feature cogl_has_feature_EXP
+/**
+ * cogl_has_feature:
+ * @context: A #CoglContext pointer
+ * @feature: A #CoglFeatureID
+ *
+ * Checks if a given @feature is currently available
+ *
+ * Cogl does not aim to be a lowest common denominator API, it aims to
+ * expose all the interesting features of GPUs to application which
+ * means applications have some responsibility to explicitly check
+ * that certain features are available before depending on them.
+ *
+ * Returns: %TRUE if the @feature is currently supported or %FALSE if
+ * not.
+ *
+ * Since: 1.10
+ * Stability: unstable
+ */
+gboolean
+cogl_has_feature (CoglContext *context, CoglFeatureID feature);
+
+#define cogl_has_features cogl_has_features_EXP
+/**
+ * cogl_has_features:
+ * @context: A #CoglContext pointer
+ * @...: A 0 terminated list of CoglFeatureID<!-- -->s
+ *
+ * Checks if a list of features are all currently available.
+ *
+ * This checks all of the listed features using cogl_has_feature() and
+ * returns %TRUE if all the features are available or %FALSE
+ * otherwise.
+ *
+ * Return value: %TRUE if all the features are available, %FALSE
+ * otherwise.
+ *
+ * Since: 1.10
+ * Stability: unstable
+ */
+gboolean
+cogl_has_features (CoglContext *context, ...);
+
+/**
+ * CoglFeatureCallback:
+ * @feature: A single feature currently supported by Cogl
+ * @user_data: A private pointer passed to cogl_foreach_feature().
+ *
+ * A callback used with cogl_foreach_feature() for enumerating all
+ * context level features supported by Cogl.
+ *
+ * Since: 1.10
+ * Stability: unstable
+ */
+typedef void (*CoglFeatureCallback) (CoglFeatureID feature, void *user_data);
+
+#define cogl_foreach_feature cogl_foreach_feature_EXP
+/**
+ * cogl_foreach_feature:
+ * @context: A #CoglContext pointer
+ * @callback: A #CoglFeatureCallback called for each supported feature
+ * @user_data: Private data to pass to the callback
+ *
+ * Iterates through all the context level features currently supported
+ * for a given @context and for each feature @callback is called.
+ *
+ * Since: 1.10
+ * Stability: unstable
+ */
+void
+cogl_foreach_feature (CoglContext *context,
+ CoglFeatureCallback callback,
+ void *user_data);
+
+#endif /* COGL_ENABLE_EXPERIMENTAL_2_0_API */
+
/**
* cogl_get_proc_address:
* @name: the name of the function.
diff --git a/cogl/driver/gl/cogl-gl.c b/cogl/driver/gl/cogl-gl.c
index 609e21d..22d16b6 100644
--- a/cogl/driver/gl/cogl-gl.c
+++ b/cogl/driver/gl/cogl-gl.c
@@ -160,6 +160,9 @@ _cogl_gl_update_features (CoglContext *context,
flags = (COGL_FEATURE_TEXTURE_READ_PIXELS
| COGL_FEATURE_UNSIGNED_INT_INDICES
| COGL_FEATURE_DEPTH_RANGE);
+ COGL_FLAGS_SET (ctx->features,
+ COGL_FEATURE_ID_UNSIGNED_INT_INDICES, TRUE);
+ COGL_FLAGS_SET (ctx->features, COGL_FEATURE_ID_DEPTH_RANGE, TRUE);
gl_extensions = (const char *)ctx->glGetString (GL_EXTENSIONS);
@@ -175,6 +178,13 @@ _cogl_gl_update_features (CoglContext *context,
| COGL_FEATURE_TEXTURE_NPOT_BASIC
| COGL_FEATURE_TEXTURE_NPOT_MIPMAP
| COGL_FEATURE_TEXTURE_NPOT_REPEAT;
+ COGL_FLAGS_SET (ctx->features, COGL_FEATURE_ID_TEXTURE_NPOT, TRUE);
+ COGL_FLAGS_SET (ctx->features,
+ COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, TRUE);
+ COGL_FLAGS_SET (ctx->features,
+ COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP, TRUE);
+ COGL_FLAGS_SET (ctx->features,
+ COGL_FEATURE_ID_TEXTURE_NPOT_REPEAT, TRUE);
}
if (_cogl_check_extension ("GL_MESA_pack_invert", gl_extensions))
@@ -190,13 +200,20 @@ _cogl_gl_update_features (CoglContext *context,
private_flags |= COGL_PRIVATE_FEATURE_FOUR_CLIP_PLANES;
if (context->glGenRenderbuffers)
- flags |= COGL_FEATURE_OFFSCREEN;
+ {
+ flags |= COGL_FEATURE_OFFSCREEN;
+ COGL_FLAGS_SET (ctx->features, COGL_FEATURE_ID_OFFSCREEN, TRUE);
+ }
if (context->glBlitFramebuffer)
private_flags |= COGL_PRIVATE_FEATURE_OFFSCREEN_BLIT;
if (context->glRenderbufferStorageMultisampleIMG)
+ {
flags |= COGL_FEATURE_OFFSCREEN_MULTISAMPLE;
+ COGL_FLAGS_SET (ctx->features,
+ COGL_FEATURE_ID_OFFSCREEN_MULTISAMPLE, TRUE);
+ }
if (COGL_CHECK_GL_VERSION (gl_major, gl_minor, 2, 1) ||
_cogl_check_extension ("GL_EXT_pixel_buffer_object", gl_extensions))
@@ -204,26 +221,46 @@ _cogl_gl_update_features (CoglContext *context,
if (COGL_CHECK_GL_VERSION (gl_major, gl_minor, 2, 0) ||
_cogl_check_extension ("GL_ARB_point_sprite", gl_extensions))
- flags |= COGL_FEATURE_POINT_SPRITE;
+ {
+ flags |= COGL_FEATURE_POINT_SPRITE;
+ COGL_FLAGS_SET (ctx->features, COGL_FEATURE_ID_POINT_SPRITE, TRUE);
+ }
if (context->glGenPrograms)
- flags |= COGL_FEATURE_SHADERS_ARBFP;
+ {
+ flags |= COGL_FEATURE_SHADERS_ARBFP;
+ COGL_FLAGS_SET (ctx->features, COGL_FEATURE_ID_ARBFP, TRUE);
+ }
if (context->glCreateProgram)
- flags |= COGL_FEATURE_SHADERS_GLSL;
+ {
+ flags |= COGL_FEATURE_SHADERS_GLSL;
+ COGL_FLAGS_SET (ctx->features, COGL_FEATURE_ID_GLSL, TRUE);
+ }
if (context->glGenBuffers)
{
private_flags |= COGL_PRIVATE_FEATURE_VBOS;
flags |= (COGL_FEATURE_MAP_BUFFER_FOR_READ |
COGL_FEATURE_MAP_BUFFER_FOR_WRITE);
+ COGL_FLAGS_SET (ctx->features,
+ COGL_FEATURE_ID_MAP_BUFFER_FOR_READ, TRUE);
+ COGL_FLAGS_SET (ctx->features,
+ COGL_FEATURE_ID_MAP_BUFFER_FOR_WRITE, TRUE);
}
if (_cogl_check_extension ("GL_ARB_texture_rectangle", gl_extensions))
- flags |= COGL_FEATURE_TEXTURE_RECTANGLE;
+ {
+ flags |= COGL_FEATURE_TEXTURE_RECTANGLE;
+ COGL_FLAGS_SET (ctx->features,
+ COGL_FEATURE_ID_TEXTURE_RECTANGLE, TRUE);
+ }
if (context->glTexImage3D)
- flags |= COGL_FEATURE_TEXTURE_3D;
+ {
+ flags |= COGL_FEATURE_TEXTURE_3D;
+ COGL_FLAGS_SET (ctx->features, COGL_FEATURE_ID_TEXTURE_3D, TRUE);
+ }
if (context->glEGLImageTargetTexture2D)
private_flags |= COGL_PRIVATE_FEATURE_TEXTURE_2D_FROM_EGL_IMAGE;
diff --git a/cogl/driver/gl/cogl-texture-driver-gl.c b/cogl/driver/gl/cogl-texture-driver-gl.c
index f68a95d..6ab1b3e 100644
--- a/cogl/driver/gl/cogl-texture-driver-gl.c
+++ b/cogl/driver/gl/cogl-texture-driver-gl.c
@@ -101,7 +101,7 @@ prep_gl_for_pixels_upload_full (int pixels_rowstride,
GE( ctx, glPixelStorei (GL_UNPACK_SKIP_PIXELS, pixels_src_x) );
GE( ctx, glPixelStorei (GL_UNPACK_SKIP_ROWS, pixels_src_y) );
- if (cogl_features_available (COGL_FEATURE_TEXTURE_3D))
+ if (cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_3D))
GE( ctx, glPixelStorei (GL_UNPACK_IMAGE_HEIGHT, image_height) );
_cogl_texture_prep_gl_alignment_for_pixels_upload (pixels_rowstride);
@@ -130,7 +130,7 @@ prep_gl_for_pixels_download_full (int pixels_rowstride,
GE( ctx, glPixelStorei (GL_PACK_SKIP_PIXELS, pixels_src_x) );
GE( ctx, glPixelStorei (GL_PACK_SKIP_ROWS, pixels_src_y) );
- if (cogl_features_available (COGL_FEATURE_TEXTURE_3D))
+ if (cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_3D))
GE( ctx, glPixelStorei (GL_PACK_IMAGE_HEIGHT, image_height) );
_cogl_texture_prep_gl_alignment_for_pixels_download (pixels_rowstride);
diff --git a/cogl/driver/gles/cogl-gles.c b/cogl/driver/gles/cogl-gles.c
index 9b2f331..988a34e 100644
--- a/cogl/driver/gles/cogl-gles.c
+++ b/cogl/driver/gles/cogl-gles.c
@@ -89,36 +89,74 @@ _cogl_gles_update_features (CoglContext *context,
* repeat modes other than CLAMP_TO_EDGE. */
flags |= COGL_FEATURE_TEXTURE_NPOT_BASIC;
flags |= COGL_FEATURE_DEPTH_RANGE;
+ COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_GLSL, TRUE);
+ COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_OFFSCREEN, TRUE);
+ COGL_FLAGS_SET (context->features,
+ COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, TRUE);
+ COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_DEPTH_RANGE, TRUE);
}
private_flags |= COGL_PRIVATE_FEATURE_VBOS;
/* Both GLES 1.1 and GLES 2.0 support point sprites in core */
flags |= COGL_FEATURE_POINT_SPRITE;
+ COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_POINT_SPRITE, TRUE);
if (context->glGenRenderbuffers)
- flags |= COGL_FEATURE_OFFSCREEN;
+ {
+ flags |= COGL_FEATURE_OFFSCREEN;
+ COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_OFFSCREEN, TRUE);
+ }
if (context->glBlitFramebuffer)
private_flags |= COGL_PRIVATE_FEATURE_OFFSCREEN_BLIT;
if (_cogl_check_extension ("GL_OES_element_index_uint", gl_extensions))
- flags |= COGL_FEATURE_UNSIGNED_INT_INDICES;
+ {
+ flags |= COGL_FEATURE_UNSIGNED_INT_INDICES;
+ COGL_FLAGS_SET (context->features,
+ COGL_FEATURE_ID_UNSIGNED_INT_INDICES, TRUE);
+ }
- if (_cogl_check_extension ("GL_OES_texture_npot", gl_extensions) ||
- _cogl_check_extension ("GL_IMG_texture_npot", gl_extensions))
- flags |= (COGL_FEATURE_TEXTURE_NPOT |
- COGL_FEATURE_TEXTURE_NPOT_BASIC |
- COGL_FEATURE_TEXTURE_NPOT_MIPMAP |
- COGL_FEATURE_TEXTURE_NPOT_REPEAT);
+ if (_cogl_check_extension ("GL_OES_texture_npot", gl_extensions))
+ {
+ flags |= (COGL_FEATURE_TEXTURE_NPOT |
+ COGL_FEATURE_TEXTURE_NPOT_BASIC |
+ COGL_FEATURE_TEXTURE_NPOT_MIPMAP |
+ COGL_FEATURE_TEXTURE_NPOT_REPEAT);
+ COGL_FLAGS_SET (context->features,
+ COGL_FEATURE_ID_TEXTURE_NPOT, TRUE);
+ COGL_FLAGS_SET (context->features,
+ COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, TRUE);
+ COGL_FLAGS_SET (context->features,
+ COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP, TRUE);
+ COGL_FLAGS_SET (context->features,
+ COGL_FEATURE_ID_TEXTURE_NPOT_REPEAT, TRUE);
+ }
+ else if (_cogl_check_extension ("GL_IMG_texture_npot", gl_extensions))
+ {
+ flags |= (COGL_FEATURE_TEXTURE_NPOT_BASIC |
+ COGL_FEATURE_TEXTURE_NPOT_MIPMAP);
+ COGL_FLAGS_SET (context->features,
+ COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, TRUE);
+ COGL_FLAGS_SET (context->features,
+ COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP, TRUE);
+ }
if (context->glTexImage3D)
- flags |= COGL_FEATURE_TEXTURE_3D;
+ {
+ flags |= COGL_FEATURE_TEXTURE_3D;
+ COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_TEXTURE_3D, TRUE);
+ }
if (context->glMapBuffer)
- /* The GL_OES_mapbuffer extension doesn't support mapping for
- read */
- flags |= COGL_FEATURE_MAP_BUFFER_FOR_WRITE;
+ {
+ /* The GL_OES_mapbuffer extension doesn't support mapping for
+ read */
+ flags |= COGL_FEATURE_MAP_BUFFER_FOR_WRITE;
+ COGL_FLAGS_SET (context->features,
+ COGL_FEATURE_ID_MAP_BUFFER_FOR_WRITE, TRUE);
+ }
if (context->glEGLImageTargetTexture2D)
private_flags |= COGL_PRIVATE_FEATURE_TEXTURE_2D_FROM_EGL_IMAGE;
diff --git a/cogl/winsys/cogl-winsys-egl.c b/cogl/winsys/cogl-winsys-egl.c
index 431ffee..8b42f46 100644
--- a/cogl/winsys/cogl-winsys-egl.c
+++ b/cogl/winsys/cogl-winsys-egl.c
@@ -533,6 +533,8 @@ update_winsys_features (CoglContext *context, GError **error)
#if defined (COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT) || \
defined (COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT)
context->feature_flags |= COGL_FEATURE_ONSCREEN_MULTIPLE;
+ COGL_FLAGS_SET (context->features,
+ COGL_FEATURE_ID_ONSCREEN_MULTIPLE, TRUE);
COGL_FLAGS_SET (context->winsys_features,
COGL_WINSYS_FEATURE_MULTIPLE_ONSCREEN,
TRUE);
diff --git a/cogl/winsys/cogl-winsys-glx.c b/cogl/winsys/cogl-winsys-glx.c
index 8b645be..86be11d 100644
--- a/cogl/winsys/cogl-winsys-glx.c
+++ b/cogl/winsys/cogl-winsys-glx.c
@@ -395,6 +395,8 @@ update_winsys_features (CoglContext *context, GError **error)
COGL_NOTE (WINSYS, " GLX Extensions: %s", glx_extensions);
context->feature_flags |= COGL_FEATURE_ONSCREEN_MULTIPLE;
+ COGL_FLAGS_SET (context->features,
+ COGL_FEATURE_ID_ONSCREEN_MULTIPLE, TRUE);
COGL_FLAGS_SET (context->winsys_features,
COGL_WINSYS_FEATURE_MULTIPLE_ONSCREEN,
TRUE);
@@ -1604,7 +1606,7 @@ get_fbconfig_for_depth (CoglContext *context,
stencil = value;
/* glGenerateMipmap is defined in the offscreen extension */
- if (cogl_features_available (COGL_FEATURE_OFFSCREEN))
+ if (cogl_has_feature (context, COGL_FEATURE_ID_OFFSCREEN))
{
glx_renderer->glXGetFBConfigAttrib (dpy,
fbconfigs[i],
@@ -1639,7 +1641,7 @@ should_use_rectangle (CoglContext *context)
if (context->rectangle_state == COGL_WINSYS_RECTANGLE_STATE_UNKNOWN)
{
- if (cogl_features_available (COGL_FEATURE_TEXTURE_RECTANGLE))
+ if (cogl_has_feature (context, COGL_FEATURE_ID_TEXTURE_RECTANGLE))
{
const char *rect_env;
@@ -1654,7 +1656,7 @@ should_use_rectangle (CoglContext *context)
are not available */
context->rectangle_state =
- cogl_features_available (COGL_FEATURE_TEXTURE_NPOT) ?
+ cogl_has_feature (context, COGL_FEATURE_ID_TEXTURE_NPOT) ?
COGL_WINSYS_RECTANGLE_STATE_DISABLE :
COGL_WINSYS_RECTANGLE_STATE_ENABLE;
diff --git a/cogl/winsys/cogl-winsys-wgl.c b/cogl/winsys/cogl-winsys-wgl.c
index 3124bcd..a90ab99 100644
--- a/cogl/winsys/cogl-winsys-wgl.c
+++ b/cogl/winsys/cogl-winsys-wgl.c
@@ -592,6 +592,8 @@ update_winsys_features (CoglContext *context, GError **error)
memset (context->winsys_features, 0, sizeof (context->winsys_features));
context->feature_flags |= COGL_FEATURE_ONSCREEN_MULTIPLE;
+ COGL_FLAGS_SET (context->features,
+ COGL_FEATURE_ID_ONSCREEN_MULTIPLE, TRUE);
COGL_FLAGS_SET (context->winsys_features,
COGL_WINSYS_FEATURE_MULTIPLE_ONSCREEN,
TRUE);
diff --git a/doc/reference/cogl-2.0-experimental/cogl-2.0-experimental-sections.txt b/doc/reference/cogl-2.0-experimental/cogl-2.0-experimental-sections.txt
index c3a9679..d97ddcc 100644
--- a/doc/reference/cogl-2.0-experimental/cogl-2.0-experimental-sections.txt
+++ b/doc/reference/cogl-2.0-experimental/cogl-2.0-experimental-sections.txt
@@ -77,6 +77,13 @@ cogl_context_new
cogl_context_get_display
<SUBSECTION>
+CoglFeatureID
+cogl_has_feature
+cogl_has_features
+CoglFeatureCallback
+cogl_foreach_feature
+
+<SUBSECTION>
cogl_push_matrix
cogl_pop_matrix
cogl_scale
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