From: Ian Romanick <ian.d.roman...@intel.com>
This adds the function and modifies dri2CreateNewContextForAPI to call
it. At this point only version 2 of the DRI2 API is advertised to the
loader.
Signed-off-by: Ian Romanick <ian.d.roman...@intel.com>
---
src/mesa/drivers/dri/common/dri_util.c | 97 +++++++++++++++++++++++++++----
1 files changed, 84 insertions(+), 13 deletions(-)
diff --git a/src/mesa/drivers/dri/common/dri_util.c
b/src/mesa/drivers/dri/common/dri_util.c
index 1640c14..7751167 100644
--- a/src/mesa/drivers/dri/common/dri_util.c
+++ b/src/mesa/drivers/dri/common/dri_util.c
@@ -134,35 +134,91 @@ static const __DRIextension
**driGetExtensions(__DRIscreen *psp)
/*@{*/
static __DRIcontext *
-dri2CreateNewContextForAPI(__DRIscreen *screen, int api,
- const __DRIconfig *config,
- __DRIcontext *shared, void *data)
+dri2CreateContextAttribs(__DRIscreen *screen, int api,
+ const __DRIconfig *config,
+ __DRIcontext *shared,
+ unsigned num_attribs,
+ const uint32_t *attribs,
+ unsigned *error,
+ void *data)
{
__DRIcontext *context;
const struct gl_config *modes = (config != NULL) ? &config->modes : NULL;
void *shareCtx = (shared != NULL) ? shared->driverPrivate : NULL;
gl_api mesa_api;
+ unsigned major_version = 1;
+ unsigned minor_version = 0;
+ uint32_t flags = 0;
+
+ assert((num_attribs == 0) || (attribs != NULL));
- if (!(screen->api_mask & (1 << api)))
+ if (!(screen->api_mask & (1 << api))) {
+ *error = __DRI_CTX_ERROR_BAD_API;
return NULL;
+ }
switch (api) {
case __DRI_API_OPENGL:
- mesa_api = API_OPENGL;
- break;
+ mesa_api = API_OPENGL;
+ break;
case __DRI_API_GLES:
- mesa_api = API_OPENGLES;
- break;
+ mesa_api = API_OPENGLES;
+ break;
case __DRI_API_GLES2:
- mesa_api = API_OPENGLES2;
- break;
+ mesa_api = API_OPENGLES2;
+ break;
+ case __DRI_API_OPENGL_CORE:
default:
+ *error = __DRI_CTX_ERROR_BAD_API;
+ return NULL;
+ }
+
+ if (mesa_api != API_OPENGL && num_attribs != 0) {
+ *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE;
+ assert(!"Should not get here.");
+ return NULL;
+ }
+
+ for (unsigned i = 0; i < num_attribs; i++) {
+ switch (attribs[i * 2]) {
+ case __DRI_CTX_ATTRIB_MAJOR_VERSION:
+ major_version = attribs[i * 2 + 1];
+ break;
+ case __DRI_CTX_ATTRIB_MINOR_VERSION:
+ minor_version = attribs[i * 2 + 1];
+ break;
+ case __DRI_CTX_ATTRIB_FLAGS:
+ flags = attribs[i * 2 + 1];
+ break;
+ default:
+ /* We can't create a context that satisfies the requirements of an
+ * attribute that we don't understand. Return failure.
+ */
+ return NULL;
+ }
+ }
+
+ /* There are no forward-compatible contexts before OpenGL 3.0. The
+ * GLX_ARB_create_context spec says:
+ *
+ * "Forward-compatible contexts are defined only for OpenGL versions
+ * 3.0 and later."
+ *
+ * Moreover, Mesa can't fulfill the requirements of a forward-looking
+ * context. Return failure if a forward-looking context is requested.
+ *
+ * In Mesa, a debug context is the same as a regular context.
+ */
+ if (major_version >= 3) {
+ if ((flags & ~__DRI_CTX_FLAG_DEBUG) != 0)
return NULL;
}
context = malloc(sizeof *context);
- if (!context)
+ if (!context) {
+ *error = __DRI_CTX_ERROR_NO_MEMORY;
return NULL;
+ }
context->loaderPrivate = data;
@@ -175,9 +231,20 @@ dri2CreateNewContextForAPI(__DRIscreen *screen, int api,
return NULL;
}
+ *error = __DRI_CTX_ERROR_SUCCESS;
return context;
}
+static __DRIcontext *
+dri2CreateNewContextForAPI(__DRIscreen *screen, int api,
+ const __DRIconfig *config,
+ __DRIcontext *shared, void *data)
+{
+ unsigned error;
+
+ return dri2CreateContextAttribs(screen, api, config, shared, 0, NULL,
+ data, &error);
+}
static __DRIcontext *
dri2CreateNewContext(__DRIscreen *screen, const __DRIconfig *config,
@@ -454,14 +521,18 @@ const __DRIcoreExtension driCoreExtension = {
/** DRI2 interface */
const __DRIdri2Extension driDRI2Extension = {
- { __DRI_DRI2, __DRI_DRI2_VERSION },
+ /* Force the version to 2 because the underlying drivers don't (can't!)
+ * support the extra requirements of CreateContextAttribs.
+ */
+ { __DRI_DRI2, 2 },
dri2CreateNewScreen,
dri2CreateNewDrawable,
dri2CreateNewContext,
dri2GetAPIMask,
dri2CreateNewContextForAPI,
dri2AllocateBuffer,
- dri2ReleaseBuffer
+ dri2ReleaseBuffer,
+ dri2CreateContextAttribs
};
const __DRI2configQueryExtension dri2ConfigQueryExtension = {
--
1.7.6.4
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