diff options
Diffstat (limited to 'include/GL/internal/dri_interface.h')
| -rw-r--r-- | include/GL/internal/dri_interface.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/include/GL/internal/dri_interface.h b/include/GL/internal/dri_interface.h index af0ee9c5667..9f5bc7c569e 100644 --- a/include/GL/internal/dri_interface.h +++ b/include/GL/internal/dri_interface.h @@ -85,6 +85,7 @@ typedef struct __DRI2throttleExtensionRec __DRI2throttleExtension; typedef struct __DRI2fenceExtensionRec __DRI2fenceExtension; typedef struct __DRI2interopExtensionRec __DRI2interopExtension; typedef struct __DRI2blobExtensionRec __DRI2blobExtension; +typedef struct __DRI2bufferDamageExtensionRec __DRI2bufferDamageExtension; typedef struct __DRIimageLoaderExtensionRec __DRIimageLoaderExtension; typedef struct __DRIimageDriverExtensionRec __DRIimageDriverExtension; @@ -488,6 +489,48 @@ struct __DRI2interopExtensionRec { struct mesa_glinterop_export_out *out); }; + +/** + * Extension for limiting window system back buffer rendering to user-defined + * scissor region. + */ + +#define __DRI2_BUFFER_DAMAGE "DRI2_BufferDamage" +#define __DRI2_BUFFER_DAMAGE_VERSION 1 + +struct __DRI2bufferDamageExtensionRec { + __DRIextension base; + + /** + * Provides an array of rectangles representing an overriding scissor region + * for rendering operations performed to the specified drawable. These + * rectangles do not replace client API scissor regions or draw + * co-ordinates, but instead inform the driver of the overall bounds of all + * operations which will be issued before the next flush. + * + * Any rendering operations writing pixels outside this region to the + * drawable will have an undefined effect on the entire drawable. + * + * This entrypoint may only be called after the drawable has either been + * newly created or flushed, and before any rendering operations which write + * pixels to the drawable. Calling this entrypoint at any other time will + * have an undefined effect on the entire drawable. + * + * Calling this entrypoint with @nrects 0 and @rects NULL will reset the + * region to the buffer's full size. This entrypoint may be called once to + * reset the region, followed by a second call with a populated region, + * before a rendering call is made. + * + * Used to implement EGL_KHR_partial_update. + * + * \param drawable affected drawable + * \param nrects number of rectangles provided + * \param rects the array of rectangles, lower-left origin + */ + void (*set_damage_region)(__DRIdrawable *drawable, unsigned int nrects, + int *rects); +}; + /*@}*/ /** |