Mesa (master): egl: Add support for EGL_KHR_image.
Chia-I Wu
olv at kemper.freedesktop.org
Mon Jan 25 03:50:43 UTC 2010
Module: Mesa
Branch: master
Commit: a1c4a8a3c855d52fbfef10023b9a8f116e163a97
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=a1c4a8a3c855d52fbfef10023b9a8f116e163a97
Author: Chia-I Wu <olvaffe at gmail.com>
Date: Sat Aug 15 22:58:13 2009 +0800
egl: Add support for EGL_KHR_image.
Individual drivers still need to implement the API hooks.
---
src/egl/main/Makefile | 2 +
src/egl/main/eglapi.c | 54 +++++++++++++++++++++++++
src/egl/main/eglapi.h | 13 ++++++-
src/egl/main/egldisplay.h | 3 +
src/egl/main/egldriver.c | 6 +++
src/egl/main/eglimage.c | 51 +++++++++++++++++++++++
src/egl/main/eglimage.h | 95 ++++++++++++++++++++++++++++++++++++++++++++
src/egl/main/eglmisc.c | 8 ++++
src/egl/main/egltypedefs.h | 2 +
9 files changed, 233 insertions(+), 1 deletions(-)
diff --git a/src/egl/main/Makefile b/src/egl/main/Makefile
index 20614d8..5b83b43 100644
--- a/src/egl/main/Makefile
+++ b/src/egl/main/Makefile
@@ -19,6 +19,7 @@ HEADERS = \
egldisplay.h \
egldriver.h \
eglglobals.h \
+ eglimage.h \
egllog.h \
eglmisc.h \
eglmode.h \
@@ -36,6 +37,7 @@ SOURCES = \
egldisplay.c \
egldriver.c \
eglglobals.c \
+ eglimage.c \
egllog.c \
eglmisc.c \
eglmode.c \
diff --git a/src/egl/main/eglapi.c b/src/egl/main/eglapi.c
index e57ce21..218de3a 100644
--- a/src/egl/main/eglapi.c
+++ b/src/egl/main/eglapi.c
@@ -65,6 +65,7 @@
#include "eglconfig.h"
#include "eglscreen.h"
#include "eglmode.h"
+#include "eglimage.h"
/**
@@ -700,6 +701,10 @@ eglGetProcAddress(const char *procname)
{ "eglQueryScreenModeMESA", (_EGLProc) eglQueryScreenModeMESA },
{ "eglQueryModeStringMESA", (_EGLProc) eglQueryModeStringMESA },
#endif /* EGL_MESA_screen_surface */
+#ifdef EGL_KHR_image_base
+ { "eglCreateImageKHR", (_EGLProc) eglCreateImageKHR },
+ { "eglDestroyImageKHR", (_EGLProc) eglDestroyImageKHR },
+#endif /* EGL_KHR_image_base */
{ NULL, NULL }
};
EGLint i;
@@ -995,3 +1000,52 @@ eglReleaseThread(void)
#endif /* EGL_VERSION_1_2 */
+
+
+#ifdef EGL_KHR_image_base
+
+
+EGLImageKHR
+eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target,
+ EGLClientBuffer buffer, const EGLint *attr_list)
+{
+ _EGLDisplay *disp = _eglLookupDisplay(dpy);
+ _EGLContext *context = _eglLookupContext(ctx, disp);
+ _EGLDriver *drv;
+ _EGLImage *img;
+
+ drv = _eglCheckDisplay(disp, __FUNCTION__);
+ if (!drv)
+ return EGL_NO_IMAGE_KHR;
+ if (!context && ctx != EGL_NO_CONTEXT) {
+ _eglError(EGL_BAD_CONTEXT, __FUNCTION__);
+ return EGL_NO_IMAGE_KHR;
+ }
+
+ img = drv->API.CreateImageKHR(drv,
+ disp, context, target, buffer, attr_list);
+ if (img)
+ return _eglLinkImage(img, disp);
+ else
+ return EGL_NO_IMAGE_KHR;
+}
+
+
+EGLBoolean eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR image)
+{
+ _EGLDisplay *disp = _eglLookupDisplay(dpy);
+ _EGLImage *img = _eglLookupImage(image, disp);
+ _EGLDriver *drv;
+
+ drv = _eglCheckDisplay(disp, __FUNCTION__);
+ if (!drv)
+ return EGL_FALSE;
+ if (!img)
+ return _eglError(EGL_BAD_PARAMETER, __FUNCTION__);
+
+ _eglUnlinkImage(img);
+ return drv->API.DestroyImageKHR(drv, disp, img);
+}
+
+
+#endif /* EGL_KHR_image_base */
diff --git a/src/egl/main/eglapi.h b/src/egl/main/eglapi.h
index 080f215..bd3c3b4 100644
--- a/src/egl/main/eglapi.h
+++ b/src/egl/main/eglapi.h
@@ -69,6 +69,11 @@ typedef _EGLSurface *(*CreatePbufferFromClientBuffer_t)(_EGLDriver *drv, _EGLDis
#endif /* EGL_VERSION_1_2 */
+#ifdef EGL_KHR_image_base
+typedef _EGLImage *(*CreateImageKHR_t)(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx, EGLenum target, EGLClientBuffer buffer, const EGLint *attr_list);
+typedef EGLBoolean (*DestroyImageKHR_t)(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *image);
+#endif /* EGL_KHR_image_base */
+
/**
* The API dispatcher jumps through these functions
@@ -104,7 +109,7 @@ struct _egl_api
WaitNative_t WaitNative;
GetProcAddress_t GetProcAddress;
- /* EGL_MESA_screen extension */
+#ifdef EGL_MESA_screen_surface
ChooseModeMESA_t ChooseModeMESA;
GetModesMESA_t GetModesMESA;
GetModeAttribMESA_t GetModeAttribMESA;
@@ -117,10 +122,16 @@ struct _egl_api
QueryScreenSurfaceMESA_t QueryScreenSurfaceMESA;
QueryScreenModeMESA_t QueryScreenModeMESA;
QueryModeStringMESA_t QueryModeStringMESA;
+#endif /* EGL_MESA_screen_surface */
#ifdef EGL_VERSION_1_2
CreatePbufferFromClientBuffer_t CreatePbufferFromClientBuffer;
#endif
+
+#ifdef EGL_KHR_image_base
+ CreateImageKHR_t CreateImageKHR;
+ DestroyImageKHR_t DestroyImageKHR;
+#endif /* EGL_KHR_image_base */
};
#endif /* EGLAPI_INCLUDED */
diff --git a/src/egl/main/egldisplay.h b/src/egl/main/egldisplay.h
index b13ce08..70fe295 100644
--- a/src/egl/main/egldisplay.h
+++ b/src/egl/main/egldisplay.h
@@ -8,6 +8,7 @@
enum _egl_resource_type {
_EGL_RESOURCE_CONTEXT,
_EGL_RESOURCE_SURFACE,
+ _EGL_RESOURCE_IMAGE,
_EGL_NUM_RESOURCES
};
@@ -30,6 +31,8 @@ struct _egl_extensions
{
EGLBoolean MESA_screen_surface;
EGLBoolean MESA_copy_context;
+ EGLBoolean KHR_image_base;
+ EGLBoolean KHR_image_pixmap;
char String[_EGL_MAX_EXTENSIONS_LEN];
};
diff --git a/src/egl/main/egldriver.c b/src/egl/main/egldriver.c
index d997326..b820b96 100644
--- a/src/egl/main/egldriver.c
+++ b/src/egl/main/egldriver.c
@@ -19,6 +19,7 @@
#include "eglscreen.h"
#include "eglstring.h"
#include "eglsurface.h"
+#include "eglimage.h"
#if defined(_EGL_PLATFORM_POSIX)
#include <dlfcn.h>
@@ -545,6 +546,11 @@ _eglInitDriverFallbacks(_EGLDriver *drv)
#ifdef EGL_VERSION_1_2
drv->API.CreatePbufferFromClientBuffer = _eglCreatePbufferFromClientBuffer;
#endif /* EGL_VERSION_1_2 */
+
+#ifdef EGL_KHR_image_base
+ drv->API.CreateImageKHR = _eglCreateImageKHR;
+ drv->API.DestroyImageKHR = _eglDestroyImageKHR;
+#endif /* EGL_KHR_image_base */
}
diff --git a/src/egl/main/eglimage.c b/src/egl/main/eglimage.c
new file mode 100644
index 0000000..5044112
--- /dev/null
+++ b/src/egl/main/eglimage.c
@@ -0,0 +1,51 @@
+#include <assert.h>
+
+#include "eglimage.h"
+#include "egldisplay.h"
+
+
+#ifdef EGL_KHR_image_base
+
+
+EGLBoolean
+_eglInitImage(_EGLDriver *drv, _EGLImage *img, const EGLint *attrib_list)
+{
+ EGLint i;
+
+ img->Preserved = EGL_FALSE;
+
+ for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) {
+ switch (attrib_list[i]) {
+ case EGL_IMAGE_PRESERVED_KHR:
+ i++;
+ img->Preserved = attrib_list[i];
+ break;
+ default:
+ /* not an error */
+ break;
+ }
+ }
+
+ return EGL_TRUE;
+}
+
+
+_EGLImage *
+_eglCreateImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
+ EGLenum target, EGLClientBuffer buffer,
+ const EGLint *attr_list)
+{
+ /* driver should override this function */
+ return NULL;
+}
+
+
+EGLBoolean
+_eglDestroyImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *image)
+{
+ /* driver should override this function */
+ return EGL_FALSE;
+}
+
+
+#endif /* EGL_KHR_image_base */
diff --git a/src/egl/main/eglimage.h b/src/egl/main/eglimage.h
new file mode 100644
index 0000000..026b103
--- /dev/null
+++ b/src/egl/main/eglimage.h
@@ -0,0 +1,95 @@
+#ifndef EGLIMAGE_INCLUDED
+#define EGLIMAGE_INCLUDED
+
+
+#include "egltypedefs.h"
+#include "egldisplay.h"
+
+
+/**
+ * "Base" class for device driver images.
+ */
+struct _egl_image
+{
+ /* An image is a display resource */
+ _EGLResource Resource;
+
+ EGLBoolean Preserved;
+};
+
+
+PUBLIC EGLBoolean
+_eglInitImage(_EGLDriver *drv, _EGLImage *img, const EGLint *attrib_list);
+
+
+extern _EGLImage *
+_eglCreateImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
+ EGLenum target, EGLClientBuffer buffer, const EGLint *attr_list);
+
+
+extern EGLBoolean
+_eglDestroyImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *image);
+
+
+/**
+ * Link an image to a display and return the handle of the link.
+ * The handle can be passed to client directly.
+ */
+static INLINE EGLImageKHR
+_eglLinkImage(_EGLImage *img, _EGLDisplay *dpy)
+{
+ _eglLinkResource(&img->Resource, _EGL_RESOURCE_IMAGE, dpy);
+ return (EGLImageKHR) img;
+}
+
+
+/**
+ * Unlink a linked image from its display.
+ * Accessing an unlinked image should generate EGL_BAD_PARAMETER error.
+ */
+static INLINE void
+_eglUnlinkImage(_EGLImage *img)
+{
+ _eglUnlinkResource(&img->Resource, _EGL_RESOURCE_IMAGE);
+}
+
+
+/**
+ * Lookup a handle to find the linked image.
+ * Return NULL if the handle has no corresponding linked image.
+ */
+static INLINE _EGLImage *
+_eglLookupImage(EGLImageKHR image, _EGLDisplay *dpy)
+{
+ _EGLResource *res = (_EGLResource *) image;
+ _EGLImage *img = (_EGLImage *) image;
+ if (!res || !dpy || !_eglCheckResource(res, _EGL_RESOURCE_IMAGE, dpy))
+ img = NULL;
+ return img;
+}
+
+
+/**
+ * Return the handle of a linked image, or EGL_NO_IMAGE_KHR.
+ */
+static INLINE EGLImageKHR
+_eglGetImageHandle(_EGLImage *img)
+{
+ _EGLResource *res = (_EGLResource *) img;
+ return (res && _eglIsResourceLinked(res)) ?
+ (EGLImageKHR) img : EGL_NO_IMAGE_KHR;
+}
+
+
+/**
+ * Return true if the image is linked to a display.
+ */
+static INLINE EGLBoolean
+_eglIsImageLinked(_EGLImage *img)
+{
+ _EGLResource *res = (_EGLResource *) img;
+ return (res && _eglIsResourceLinked(res));
+}
+
+
+#endif /* EGLIMAGE_INCLUDED */
diff --git a/src/egl/main/eglmisc.c b/src/egl/main/eglmisc.c
index e669133..5726f5b 100644
--- a/src/egl/main/eglmisc.c
+++ b/src/egl/main/eglmisc.c
@@ -54,6 +54,14 @@ _eglUpdateExtensionsString(_EGLDisplay *dpy)
strcat(exts, "EGL_MESA_screen_surface ");
if (dpy->Extensions.MESA_copy_context)
strcat(exts, "EGL_MESA_copy_context ");
+
+ if (dpy->Extensions.KHR_image_base)
+ strcat(exts, "EGL_KHR_image_base ");
+ if (dpy->Extensions.KHR_image_pixmap)
+ strcat(exts, "EGL_KHR_image_pixmap ");
+ if (dpy->Extensions.KHR_image_base && dpy->Extensions.KHR_image_pixmap)
+ strcat(exts, "EGL_KHR_image ");
+
assert(strlen(exts) < _EGL_MAX_EXTENSIONS_LEN);
}
diff --git a/src/egl/main/egltypedefs.h b/src/egl/main/egltypedefs.h
index a49ffbb..e6b19b3 100644
--- a/src/egl/main/egltypedefs.h
+++ b/src/egl/main/egltypedefs.h
@@ -22,6 +22,8 @@ typedef struct _egl_driver _EGLDriver;
typedef struct _egl_extensions _EGLExtensions;
+typedef struct _egl_image _EGLImage;
+
typedef struct _egl_mode _EGLMode;
typedef struct _egl_resource _EGLResource;
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