From: Kevin Rogovin <kevin.rogo...@intel.com>
Add convenience helper functions for fetching geometry of gl_framebuffer
that return the geometry of the gl_framebuffer instead of the geometry of
the buffers of the gl_framebuffer when then the gl_framebuffer has no
attachments.
v1 -> v2
Split from patch "mesa:helper-conveniance functions for drivers to implement
ARB_framebuffer_no_attachment".
v2 -> v3
Add error check for functions of extension.
Implement DSA functions dependent on extension.
Signed-off-by: Kevin Rogovin <kevin.rogo...@intel.com>
---
src/mesa/main/framebuffer.h | 29 +++++++++++++++++++++++++++++
src/mesa/main/mtypes.h | 8 +++++++-
2 files changed, 36 insertions(+), 1 deletion(-)
diff --git a/src/mesa/main/framebuffer.h b/src/mesa/main/framebuffer.h
index d02b86f..c402ce7 100644
--- a/src/mesa/main/framebuffer.h
+++ b/src/mesa/main/framebuffer.h
@@ -76,6 +76,35 @@ _mesa_scissor_bounding_box(const struct gl_context *ctx,
const struct gl_framebuffer *buffer,
unsigned idx, int *bbox);
+static inline GLuint
+_mesa_geometric_width(const struct gl_framebuffer *buffer)
+{
+ return buffer->_HasAttachments ?
+ buffer->Width : buffer->DefaultGeometry.Width;
+}
+
+
+static inline GLuint
+_mesa_geometric_height(const struct gl_framebuffer *buffer)
+{
+ return buffer->_HasAttachments ?
+ buffer->Height : buffer->DefaultGeometry.Height;
+}
+
+static inline GLuint
+_mesa_geometric_samples(const struct gl_framebuffer *buffer)
+{
+ return buffer->_HasAttachments ?
+ buffer->Visual.samples : buffer->DefaultGeometry.NumSamples;
+}
+
+static inline GLuint
+_mesa_geometric_layers(const struct gl_framebuffer *buffer)
+{
+ return buffer->_HasAttachments ?
+ buffer->MaxNumLayers : buffer->DefaultGeometry.Layers;
+}
+
extern void
_mesa_update_draw_buffer_bounds(struct gl_context *ctx,
struct gl_framebuffer *drawFb);
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 1a37aa6..7e1f0e0 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -3189,7 +3189,13 @@ struct gl_framebuffer
* 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)
+ * _HasAttachments being false). To get the geometry
+ * of the framebuffer, the helper functions
+ * _mesa_geometric_width(),
+ * _mesa_geometric_height(),
+ * _mesa_geometric_samples(),
+ * _mesa_geometric_layers()
+ * are available that check _HasAttachments.
*/
GLboolean _HasAttachments;
--
1.9.1
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