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glcontext: Add gdk_gl_context_get_memory_flags()
Checks which features of a given memory format are supported by the current GL implementation. We check: * usable: Can be used as a texture with NEAREST filter * renderable: Can be used as a render target * filterable: Can be used with GL_LINEAR In normal GL, all formats are all of these things, but GLES is a lot more picky. So far nobody uses this.
This commit is contained in:
Benjamin Otte
parent
6e7c499408
commit
5485d806c5
@ -104,10 +104,15 @@
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#define DEFAULT_ALLOWED_APIS GDK_GL_API_GL | GDK_GL_API_GLES
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typedef struct {
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typedef struct _GdkGLContextPrivate GdkGLContextPrivate;
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struct _GdkGLContextPrivate
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{
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GdkGLVersion required;
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GdkGLVersion gl_version;
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GdkGLMemoryFlags memory_flags[GDK_MEMORY_N_FORMATS];
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guint has_khr_debug : 1;
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guint use_khr_debug : 1;
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guint has_half_float : 1;
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@ -129,7 +134,7 @@ typedef struct {
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EGLContext egl_context;
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EGLBoolean (*eglSwapBuffersWithDamage) (EGLDisplay, EGLSurface, const EGLint *, EGLint);
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#endif
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} GdkGLContextPrivate;
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};
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enum {
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PROP_0,
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@ -1524,6 +1529,132 @@ gdk_gl_context_realize (GdkGLContext *context,
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return priv->api;
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}
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static void
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gdk_gl_context_init_memory_flags (GdkGLContext *self)
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{
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GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (self);
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gsize i;
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if (!gdk_gl_context_get_use_es (self))
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{
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for (i = 0; i < G_N_ELEMENTS (priv->memory_flags); i++)
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{
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priv->memory_flags[i] = GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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}
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return;
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}
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/* GLES 2.0 spec, tables 3.2 and 3.3 */
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priv->memory_flags[GDK_MEMORY_R8G8B8] = GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R8G8B8A8_PREMULTIPLIED] = GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R8G8B8A8] = GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_FILTERABLE;
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#if 0
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/* GLES2 can do these, but GTK can't */
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priv->memory_flags[GDK_MEMORY_A8] = GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_G8] = GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_G8A8_PREMULTIPLIED] = GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_G8A8] = GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_FILTERABLE;
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#endif
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if (gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 0)))
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{
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/* GLES 3.0.6 spec, table 3.13 */
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priv->memory_flags[GDK_MEMORY_G8] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_A8] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_G8A8_PREMULTIPLIED] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_G8A8] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R8G8B8] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R8G8B8A8_PREMULTIPLIED] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R8G8B8A8] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R8G8B8X8] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R16G16B16_FLOAT] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE;
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priv->memory_flags[GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE;
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priv->memory_flags[GDK_MEMORY_R16G16B16A16_FLOAT] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE;
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priv->memory_flags[GDK_MEMORY_A16_FLOAT] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE;
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priv->memory_flags[GDK_MEMORY_R32G32B32_FLOAT] |= GDK_GL_FORMAT_USABLE;
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priv->memory_flags[GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED] |= GDK_GL_FORMAT_USABLE;
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priv->memory_flags[GDK_MEMORY_R32G32B32A32_FLOAT] |= GDK_GL_FORMAT_USABLE;
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priv->memory_flags[GDK_MEMORY_A32_FLOAT] |= GDK_GL_FORMAT_USABLE;
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/* no changes in GLES 3.1 spec, table 8.13 */
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if (gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 2)))
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{
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/* GLES 3.2 spec, table 8.10 */
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priv->memory_flags[GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED] |= GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R16G16B16A16_FLOAT] |= GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_A16_FLOAT] |= GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED] |= GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R32G32B32A32_FLOAT] |= GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_A32_FLOAT] |= GDK_GL_FORMAT_FILTERABLE;
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}
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}
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if (epoxy_has_gl_extension ("GL_OES_rgb8_rgba8"))
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{
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priv->memory_flags[GDK_MEMORY_R8G8B8A8_PREMULTIPLIED] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R8G8B8A8] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R8G8B8] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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if (gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 0)))
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priv->memory_flags[GDK_MEMORY_R8G8B8X8] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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}
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if (epoxy_has_gl_extension ("GL_EXT_abgr"))
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{
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priv->memory_flags[GDK_MEMORY_A8B8G8R8_PREMULTIPLIED] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_A8B8G8R8] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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if (gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 0)))
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priv->memory_flags[GDK_MEMORY_X8B8G8R8] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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}
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if (epoxy_has_gl_extension ("GL_EXT_texture_format_BGRA8888"))
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{
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priv->memory_flags[GDK_MEMORY_B8G8R8A8_PREMULTIPLIED] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_B8G8R8A8] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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if (gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 0)))
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priv->memory_flags[GDK_MEMORY_B8G8R8X8] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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}
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/* Technically, those extensions are supported on GLES2.
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* However, GTK uses the wrong format/type pairs with them, so we don't enable them.
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*/
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if (gdk_gl_version_greater_equal (&priv->gl_version, &GDK_GL_VERSION_INIT (3, 0)))
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{
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if (epoxy_has_gl_extension ("GL_EXT_texture_norm16"))
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{
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priv->memory_flags[GDK_MEMORY_R16G16B16A16_PREMULTIPLIED] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R16G16B16A16] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R16G16B16] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_G16A16_PREMULTIPLIED] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_G16A16] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_G16] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_A16] |= GDK_GL_FORMAT_USABLE | GDK_GL_FORMAT_RENDERABLE | GDK_GL_FORMAT_FILTERABLE;
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}
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if (epoxy_has_gl_extension ("GL_OES_texture_half_float"))
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{
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GdkGLMemoryFlags flags = GDK_GL_FORMAT_USABLE;
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if (epoxy_has_gl_extension ("GL_EXT_color_buffer_half_float"))
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flags |= GDK_GL_FORMAT_RENDERABLE;
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if (epoxy_has_gl_extension ("GL_OES_texture_half_float_linear"))
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flags |= GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R16G16B16A16_FLOAT_PREMULTIPLIED] |= flags;
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priv->memory_flags[GDK_MEMORY_R16G16B16A16_FLOAT] |= flags;
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priv->memory_flags[GDK_MEMORY_R16G16B16_FLOAT] |= flags;
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priv->memory_flags[GDK_MEMORY_A16_FLOAT] |= flags;
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}
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if (epoxy_has_gl_extension ("GL_OES_texture_float"))
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{
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GdkGLMemoryFlags flags = GDK_GL_FORMAT_USABLE;
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if (epoxy_has_gl_extension ("GL_EXT_color_buffer_float"))
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flags |= GDK_GL_FORMAT_RENDERABLE;
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if (epoxy_has_gl_extension ("GL_OES_texture_float_linear"))
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flags |= GDK_GL_FORMAT_FILTERABLE;
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priv->memory_flags[GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED] |= flags;
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priv->memory_flags[GDK_MEMORY_R32G32B32A32_FLOAT] |= flags;
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priv->memory_flags[GDK_MEMORY_R32G32B32_FLOAT] |= flags;
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priv->memory_flags[GDK_MEMORY_A32_FLOAT] |= flags;
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}
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}
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}
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void
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gdk_gl_version_init_epoxy (GdkGLVersion *version)
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{
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@ -1590,6 +1721,8 @@ gdk_gl_context_check_extensions (GdkGLContext *context)
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epoxy_has_gl_extension ("GL_ARB_sync") ||
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epoxy_has_gl_extension ("GL_APPLE_sync");
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gdk_gl_context_init_memory_flags (context);
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{
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int max_texture_size;
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glGetIntegerv (GL_MAX_TEXTURE_SIZE, &max_texture_size);
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@ -1873,6 +2006,15 @@ gdk_gl_context_get_current (void)
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return context;
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}
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GdkGLMemoryFlags
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gdk_gl_context_get_format_flags (GdkGLContext *self,
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GdkMemoryFormat format)
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{
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GdkGLContextPrivate *priv = gdk_gl_context_get_instance_private (self);
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return priv->memory_flags[format];
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}
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gboolean
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gdk_gl_context_has_debug (GdkGLContext *self)
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{
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@ -35,6 +35,17 @@ typedef enum {
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GDK_GL_CGL
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} GdkGLBackend;
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typedef enum {
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/* The format is supported for glTexImage2D() */
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GDK_GL_FORMAT_USABLE = 1 << 0,
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/* The format can be rendered to.
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* GL/GLES spec term: "color-renderable" */
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GDK_GL_FORMAT_RENDERABLE = 1 << 1,
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/* GL_LINEAR/GL_MIPMAP_LINEAR can be used for textures in this format.
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* GLES spec term: "texture-filterable" */
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GDK_GL_FORMAT_FILTERABLE = 1 << 2
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} GdkGLMemoryFlags;
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/* The maximum amount of buffers we track update regions for.
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* Note that this is equal to the max buffer age value we
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* can provide a damage region for */
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@ -150,6 +161,8 @@ void gdk_gl_context_label_object_printf (GdkGLContext
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const char * gdk_gl_context_get_glsl_version_string (GdkGLContext *self);
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GdkGLMemoryFlags gdk_gl_context_get_format_flags (GdkGLContext *self,
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GdkMemoryFormat format) G_GNUC_PURE;
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gboolean gdk_gl_context_has_debug (GdkGLContext *self) G_GNUC_PURE;
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gboolean gdk_gl_context_use_es_bgra (GdkGLContext *context);
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