main/fbobject: implement new 4.5 pnames for GetFramebufferParameter

4.5 added new pnames allowed for GetFramebufferParameter, and
GetNamedFramebufferParameter.

From OpenGL 4.5 spec, section 9.2.3 "Framebuffer Object Queries" (quoting
the paragraph with only the new pnames, not all the supported):

   "pname may also be one of DOUBLEBUFFER,
    IMPLEMENTATION_COLOR_READ_FORMAT, IMPLEMENTATION_COLOR_READ_TYPE,
    SAMPLES, SAMPLE_BUFFERS, or STEREO, indicating the corresponding
    framebuffer-dependent state from table 23.73. Values of
    framebuffer-dependent state are identical to those that would be
    obtained were the framebuffer object bound and queried using the
    simple state queries in that table. These values may be queried
    from either a framebuffer object or a default framebuffer."

Fixes:
GL45-CTS.direct_state_access.framebuffers_get_parameters

Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c
index f32f93167517096178b543bdad7e1bb5f1d6d9b2..bed5b2573e4d6048d0a5595d143e2d1875b78a6f 100644 (file)
--- a/src/mesa/main/fbobject.c
+++ b/src/mesa/main/fbobject.c
@@ -1505,6 +1505,24 @@ get_framebuffer_parameteriv(struct gl_context *ctx, struct gl_framebuffer *fb,
    case GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS:
       *params = fb->DefaultGeometry.FixedSampleLocations;
       break;
+   case GL_DOUBLEBUFFER:
+      *params = fb->Visual.doubleBufferMode;
+      break;
+   case GL_IMPLEMENTATION_COLOR_READ_FORMAT:
+      *params = _mesa_get_color_read_format(ctx, fb, func);
+      break;
+   case GL_IMPLEMENTATION_COLOR_READ_TYPE:
+      *params = _mesa_get_color_read_type(ctx, fb, func);
+      break;
+   case GL_SAMPLES:
+      *params = _mesa_geometric_samples(fb);
+      break;
+   case GL_SAMPLE_BUFFERS:
+      *params = _mesa_geometric_samples(fb) > 0;
+      break;
+   case GL_STEREO:
+      *params = fb->Visual.stereoMode;
+      break;
    default:
       _mesa_error(ctx, GL_INVALID_ENUM,
                   "%s(pname=0x%x)", func, pname);