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glcontext: Add api to check for vertex arrays

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Vertex arrays are available in GL and in GLES >= 3.

We don't check for the GLES extension that provided
vertex arrays in older GLES, since that requires
using different API.

This api avoids version checks all over the place.
This commit is contained in:
Matthias Clasen 2023-10-19 20:56:59 -04:00
parent 148b8e5cd8
commit b8ffceaebb
2 changed files with 24 additions and 0 deletions
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22
gdk/gdkglcontext.c
View File

@ -1867,6 +1867,7 @@ gdk_gl_context_has_sync (GdkGLContext *self)
return priv->has_sync;
}
/* Return if GL_BGRA works with glTexImage2D */
gboolean
gdk_gl_context_has_bgra (GdkGLContext *self)
{
@ -1875,6 +1876,27 @@ gdk_gl_context_has_bgra (GdkGLContext *self)
return priv->has_bgra;
}
/* Return if glGenVertexArrays, glBindVertexArray and glDeleteVertexArrays
* can be used
*/
gboolean
gdk_gl_context_has_vertex_arrays (GdkGLContext *self)
{
GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (self);
switch (priv->api)
{
case GDK_GL_API_GL:
return TRUE;
case GDK_GL_API_GLES:
return gdk_gl_version_get_major (&priv->gl_version) >= 3;
default:
g_return_val_if_reached (FALSE);
}
}
/* This is currently private! */
/* When using GL/ES, don't flip the 'R' and 'B' bits on Windows/ANGLE for glReadPixels() */
gboolean

2
gdk/gdkglcontextprivate.h
View File

@ -159,6 +159,8 @@ gboolean gdk_gl_context_has_sync (GdkGLContext
gboolean gdk_gl_context_has_bgra (GdkGLContext *self) G_GNUC_PURE;
gboolean gdk_gl_context_has_vertex_arrays (GdkGLContext *self) G_GNUC_PURE;
double gdk_gl_context_get_scale (GdkGLContext *self);
G_END_DECLS