Add EGL_DRM_BUFFER_OFFSET_MESA to specify an offset (in bytes) relative
to the start of the DRM buffer. Likewise, add an EGL_DRM_BUFFER_PLANE_ID_MESA
attribute to specify (name) a plane identifier associated with the generated
image.
Add new image formats:
- EGL_DRM_BUFFER_FORMAT_R8_MESA: 8-bit red
- EGL_DRM_BUFFER_FORMAT_RG8_MESA: 8-bit red + green
Add picture structure information:
- EGL_DRM_BUFFER_STRUCTURE_TOP_FIELD: interlaced picture, top field
- EGL_DRM_BUFFER_STRUCTURE_BOTTOM_FIELD: interlaced picture, bottom field
- EGL_DRM_BUFFER_STRUCTURE_FRAME: whole picture
---
docs/MESA_drm_image.spec | 11 +++++++++++
include/EGL/eglmesaext.h | 26 ++++++++++++++++++++++++++
src/egl/drivers/dri2/egl_dri2.c | 37 ++++++++++++++++++++++++++++++++-----
src/egl/main/eglimage.c | 10 ++++++++++
src/egl/main/eglimage.h | 3 +++
5 files changed, 82 insertions(+), 5 deletions(-)
diff --git a/docs/MESA_drm_image.spec b/docs/MESA_drm_image.spec
index 1150a4c..a54476a 100644
--- a/docs/MESA_drm_image.spec
+++ b/docs/MESA_drm_image.spec
@@ -61,6 +61,8 @@ New Tokens
Accepted as values for the EGL_IMAGE_FORMAT_MESA attribute:
EGL_DRM_BUFFER_FORMAT_ARGB32_MESA 0x31D2
+ EGL_DRM_BUFFER_FORMAT_R8_MESA 0x8229
+ EGL_DRM_BUFFER_FORMAT_RG8_MESA 0x822B
Bits accepted in EGL_DRM_BUFFER_USE_MESA:
@@ -76,6 +78,15 @@ New Tokens
EGL_DRM_BUFFER_STRIDE_MESA 0x31D4
EGL_DRM_BUFFER_FORMAT_MESA 0x31D0
+ EGL_DRM_BUFFER_PLANE_ID_MESA 0x31D5
+ EGL_DRM_BUFFER_OFFSET_MESA 0x31D6
+ EGL_DRM_BUFFER_STRUCTURE_MESA 0x31D7
+
+ Accepted as values for the EGL_DRM_BUFFER_STRUCTURE_MESA attribute:
+
+ EGL_DRM_BUFFER_STRUCTURE_TOP_FIELD 0x0001
+ EGL_DRM_BUFFER_STRUCTURE_BOTTOM_FIELD 0x0002
+ EGL_DRM_BUFFER_STRUCTURE_FRAME 0x0003
Additions to the EGL 1.4 Specification:
diff --git a/include/EGL/eglmesaext.h b/include/EGL/eglmesaext.h
index 52dd5b1..202c3fc 100644
--- a/include/EGL/eglmesaext.h
+++ b/include/EGL/eglmesaext.h
@@ -104,6 +104,32 @@ typedef EGLDisplay (EGLAPIENTRYP PFNEGLGETDRMDISPLAYMESA)
(int fd);
#ifdef EGL_MESA_drm_image
/* Mesa's extension to EGL_MESA_drm_image... */
+#ifndef EGL_DRM_BUFFER_PLANE_ID_MESA
+#define EGL_DRM_BUFFER_PLANE_ID_MESA 0x31D6
+#endif
+#ifndef EGL_DRM_BUFFER_OFFSET_MESA
+#define EGL_DRM_BUFFER_OFFSET_MESA 0x31D7
+#endif
+#ifndef EGL_DRM_BUFFER_STRUCTURE_MESA
+#define EGL_DRM_BUFFER_STRUCTURE_MESA 0x31D8
+#endif
+/* EGL_DRM_BUFFER_FORMAT_MESA attribute values */
+#ifndef EGL_DRM_BUFFER_FORMAT_R8_MESA
+#define EGL_DRM_BUFFER_FORMAT_R8_MESA 0x8229 /* 8-bit red */
+#endif
+#ifndef EGL_DRM_BUFFER_FORMAT_RG8_MESA
+#define EGL_DRM_BUFFER_FORMAT_RG8_MESA 0x822B /* 8-bit red + green */
+#endif
+/* EGL_DRM_BUFFER_STRUCTURE_MESA attribute values */
+#ifndef EGL_DRM_BUFFER_STRUCTURE_TOP_FIELD
+#define EGL_DRM_BUFFER_STRUCTURE_TOP_FIELD 0x0001 /* Interlaced, top
field */
+#endif
+#ifndef EGL_DRM_BUFFER_STRUCTURE_BOTTOM_FIELD
+#define EGL_DRM_BUFFER_STRUCTURE_BOTTOM_FIELD 0x0002 /* Interlaced, bottom
field */
+#endif
+#ifndef EGL_DRM_BUFFER_STRUCTURE_FRAME
+#define EGL_DRM_BUFFER_STRUCTURE_FRAME 0x0003 /* Whole Picture */
+#endif
#ifndef EGL_DRM_BUFFER_USE_CURSOR_MESA
#define EGL_DRM_BUFFER_USE_CURSOR_MESA 0x0004
#endif
diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index c4d4f2f..755fb49 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -1010,6 +1010,25 @@ dri2_invoke_create_image_from_name(struct
dri2_egl_display *dpy,
attrs->pitch, user_data);
}
+static unsigned int
+dri2_image_get_picture_structure(uint32_t egl_picture_structure)
+{
+ unsigned int picture_structure;
+
+ switch (egl_picture_structure) {
+ case EGL_DRM_BUFFER_STRUCTURE_TOP_FIELD:
+ picture_structure = __DRI_IMAGE_STRUCTURE_TOP_FIELD;
+ break;
+ case EGL_DRM_BUFFER_STRUCTURE_BOTTOM_FIELD:
+ picture_structure = __DRI_IMAGE_STRUCTURE_BOTTOM_FIELD;
+ break;
+ default:
+ picture_structure = __DRI_IMAGE_STRUCTURE_FRAME;
+ break;
+ }
+ return picture_structure;
+}
+
static _EGLImage *
dri2_create_image_drm_name(_EGLDisplay *disp, _EGLContext *ctx,
EGLint name,
@@ -1034,15 +1053,15 @@ dri2_create_image_drm_name(_EGLDisplay *disp,
_EGLContext *ctx,
return NULL;
}
- imageAttrs.plane_id = 0;
+ imageAttrs.plane_id = attrs->PlaneId;
imageAttrs.format = format;
imageAttrs.width = attrs->Width;
imageAttrs.height = attrs->Height;
imageAttrs.pitch = pitch;
- imageAttrs.structure = __DRI_IMAGE_STRUCTURE_FRAME;
+ imageAttrs.structure =
dri2_image_get_picture_structure(attrs->DRMBufferStructureMESA);
dri2_img->dri_image = dri2_invoke_create_image_from_name(
dri2_dpy,
- name, 0,
+ name, attrs->DRMBufferOffsetMESA,
&imageAttrs, dri2_img
);
if (dri2_img->dri_image == NULL) {
@@ -1067,9 +1086,10 @@ dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp,
_EGLContext *ctx,
return NULL;
if (attrs.Width <= 0 || attrs.Height <= 0 ||
- attrs.DRMBufferStrideMESA <= 0) {
+ attrs.DRMBufferStrideMESA <= 0 ||
+ attrs.DRMBufferOffsetMESA < 0) {
_eglError(EGL_BAD_PARAMETER,
- "bad width, height or stride");
+ "bad width, height, stride or offset");
return NULL;
}
@@ -1079,6 +1099,13 @@ dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp,
_EGLContext *ctx,
format = __DRI_IMAGE_FORMAT_ARGB8888;
pitch /= 4;
break;
+ case EGL_DRM_BUFFER_FORMAT_R8_MESA:
+ format = __DRI_IMAGE_FORMAT_R8;
+ break;
+ case EGL_DRM_BUFFER_FORMAT_RG8_MESA:
+ format = __DRI_IMAGE_FORMAT_RG88;
+ pitch /= 2;
+ break;
default:
_eglError(EGL_BAD_PARAMETER,
"dri2_create_image_khr: unsupported pixmap depth");
diff --git a/src/egl/main/eglimage.c b/src/egl/main/eglimage.c
index 1174d0a..96d5bee 100644
--- a/src/egl/main/eglimage.c
+++ b/src/egl/main/eglimage.c
@@ -49,6 +49,7 @@ _eglParseImageAttribList(_EGLImageAttribs *attrs, _EGLDisplay
*dpy,
attrs->ImagePreserved = EGL_FALSE;
attrs->GLTextureLevel = 0;
attrs->GLTextureZOffset = 0;
+ attrs->DRMBufferStructureMESA = EGL_DRM_BUFFER_STRUCTURE_FRAME;
if (!attrib_list)
return err;
@@ -87,6 +88,15 @@ _eglParseImageAttribList(_EGLImageAttribs *attrs,
_EGLDisplay *dpy,
case EGL_DRM_BUFFER_STRIDE_MESA:
attrs->DRMBufferStrideMESA = val;
break;
+ case EGL_DRM_BUFFER_PLANE_ID_MESA:
+ attrs->PlaneId = val;
+ break;
+ case EGL_DRM_BUFFER_OFFSET_MESA:
+ attrs->DRMBufferOffsetMESA = val;
+ break;
+ case EGL_DRM_BUFFER_STRUCTURE_MESA:
+ attrs->DRMBufferStructureMESA = val;
+ break;
default:
/* unknown attrs are ignored */
diff --git a/src/egl/main/eglimage.h b/src/egl/main/eglimage.h
index acb36aa..646e499 100644
--- a/src/egl/main/eglimage.h
+++ b/src/egl/main/eglimage.h
@@ -47,9 +47,12 @@ struct _egl_image_attribs
/* EGL_MESA_drm_image */
EGLint Width;
EGLint Height;
+ EGLint PlaneId;
EGLint DRMBufferFormatMESA;
EGLint DRMBufferUseMESA;
EGLint DRMBufferStrideMESA;
+ EGLint DRMBufferOffsetMESA;
+ EGLint DRMBufferStructureMESA;
};
/**
--
1.7.5.4
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