diff options
| -rw-r--r-- | src/mesa/main/extensions.c | 1 | ||||
| -rw-r--r-- | src/mesa/main/fbobject.c | 1 | ||||
| -rw-r--r-- | src/mesa/main/framebuffer.c | 1 | ||||
| -rw-r--r-- | src/mesa/main/mtypes.h | 48 |
4 files changed, 46 insertions, 5 deletions
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c index f9bf503a066..4176a69ed7c 100644 --- a/src/mesa/main/extensions.c +++ b/src/mesa/main/extensions.c @@ -117,6 +117,7 @@ static const struct extension extension_table[] = { { "GL_ARB_fragment_program", o(ARB_fragment_program), GLL, 2002 }, { "GL_ARB_fragment_program_shadow", o(ARB_fragment_program_shadow), GLL, 2003 }, { "GL_ARB_fragment_shader", o(ARB_fragment_shader), GL, 2002 }, + { "GL_ARB_framebuffer_no_attachments", o(ARB_framebuffer_no_attachments), GL, 2012 }, { "GL_ARB_framebuffer_object", o(ARB_framebuffer_object), GL, 2005 }, { "GL_ARB_framebuffer_sRGB", o(EXT_framebuffer_sRGB), GL, 1998 }, { "GL_ARB_get_program_binary", o(dummy_true), GL, 2010 }, diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c index c5a702636a8..498edfb564c 100644 --- a/src/mesa/main/fbobject.c +++ b/src/mesa/main/fbobject.c @@ -957,6 +957,7 @@ _mesa_test_framebuffer_completeness(struct gl_context *ctx, fb->Height = 0; fb->_AllColorBuffersFixedPoint = GL_TRUE; fb->_HasSNormOrFloatColorBuffer = GL_FALSE; + fb->_HasAttachments = true; /* Start at -2 to more easily loop over all attachment points. * -2: depth buffer diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c index 665a5ba1492..f49d74c89f0 100644 --- a/src/mesa/main/framebuffer.c +++ b/src/mesa/main/framebuffer.c @@ -157,6 +157,7 @@ _mesa_initialize_window_framebuffer(struct gl_framebuffer *fb, fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT; fb->_AllColorBuffersFixedPoint = !visual->floatMode; fb->_HasSNormOrFloatColorBuffer = visual->floatMode; + fb->_HasAttachments = true; compute_depth_max(fb); } diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h index 205c7d2fbee..e9f70e20612 100644 --- a/src/mesa/main/mtypes.h +++ b/src/mesa/main/mtypes.h @@ -3133,12 +3133,29 @@ struct gl_framebuffer */ struct gl_config Visual; - GLuint Width, Height; /**< size of frame buffer in pixels */ + /** + * Size of frame buffer in pixels. If there are no attachments, then both + * of these are 0. + */ + GLuint Width, Height; + + /** + * In the case that the framebuffer has no attachment (i.e. + * GL_ARB_framebuffer_no_attachments) then the geometry of + * the framebuffer is specified by the default values. + */ + struct { + GLuint Width, Height, Layers, NumSamples; + GLboolean FixedSampleLocations; + } DefaultGeometry; - /** \name Drawing bounds (Intersection of buffer size and scissor box) */ + /** \name Drawing bounds (Intersection of buffer size and scissor box) + * The drawing region is given by [_Xmin, _Xmax) x [_Ymin, _Ymax), + * (inclusive for _Xmin and _Ymin while exclusive for _Xmax and _Ymax) + */ /*@{*/ - GLint _Xmin, _Xmax; /**< inclusive */ - GLint _Ymin, _Ymax; /**< exclusive */ + GLint _Xmin, _Xmax; + GLint _Ymin, _Ymax; /*@}*/ /** \name Derived Z buffer stuff */ @@ -3151,6 +3168,16 @@ struct gl_framebuffer /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */ GLenum _Status; + /** Whether one of Attachment has Type != GL_NONE + * NOTE: the values for Width and Height are set to 0 in case of having + * no attachments, a backend driver supporting the extension + * GL_ARB_framebuffer_no_attachments must check for the flag _HasAttachments + * and if GL_FALSE, must then use the values in DefaultGeometry to initialize + * its viewport, scissor and so on (in particular _Xmin, _Xmax, _Ymin and + * _Ymax do NOT take into account _HasAttachments being false) + */ + bool _HasAttachments; + /** Integer color values */ GLboolean _IntegerColor; @@ -3161,7 +3188,9 @@ struct gl_framebuffer /** * The maximum number of layers in the framebuffer, or 0 if the framebuffer * is not layered. For cube maps and cube map arrays, each cube face - * counts as a layer. + * counts as a layer. As the case for Width, Height a backend driver + * supporting GL_ARB_framebuffer_no_attachments must use DefaultGeometry + * in the case that _HasAttachments is false */ GLuint MaxNumLayers; @@ -3340,6 +3369,14 @@ struct gl_constants GLuint MaxRenderbufferSize; /**< GL_EXT_framebuffer_object */ GLuint MaxSamples; /**< GL_ARB_framebuffer_object */ + /** + * GL_ARB_framebuffer_no_attachments + */ + GLuint MaxFramebufferWidth; + GLuint MaxFramebufferHeight; + GLuint MaxFramebufferLayers; + GLuint MaxFramebufferSamples; + /** Number of varying vectors between any two shader stages. */ GLuint MaxVarying; @@ -3617,6 +3654,7 @@ struct gl_extensions GLboolean ARB_fragment_program; GLboolean ARB_fragment_program_shadow; GLboolean ARB_fragment_shader; + GLboolean ARB_framebuffer_no_attachments; GLboolean ARB_framebuffer_object; GLboolean ARB_explicit_attrib_location; GLboolean ARB_explicit_uniform_location; |