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xorg-x11-server/u_0005-glx-Optionally-call-DRI2-createContextAttribs-from-_.patch

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From 228d954789f97baf230c97c29a515abb8fd4b6d1 Mon Sep 17 00:00:00 2001
From: Ian Romanick <ian.d.romanick@intel.com>
Date: Mon, 5 Dec 2011 13:52:01 -0800
Subject: [PATCH 05/11] glx: Optionally call DRI2 createContextAttribs from __glXDRIscreenCreateContext
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Christopher James Halse Rogers <christopher.halse.rogers@canonical.com>
---
glx/glxdri2.c | 156 +++++++++++++++++++++++++++++++++++++++++++++++++++++++--
1 files changed, 151 insertions(+), 5 deletions(-)
diff --git a/glx/glxdri2.c b/glx/glxdri2.c
index 656b577..ba09cbd 100644
--- a/glx/glxdri2.c
+++ b/glx/glxdri2.c
@@ -47,6 +47,7 @@
#include "glxserver.h"
#include "glxutil.h"
#include "glxdricommon.h"
+#include <GL/glxtokens.h>
#include "glapitable.h"
#include "glapi.h"
@@ -377,6 +378,143 @@ __glXDRIscreenDestroy(__GLXscreen * baseScreen)
free(screen);
}
+static Bool
+dri2_convert_glx_attribs(unsigned num_attribs, const uint32_t *attribs,
+ unsigned *major_ver, unsigned *minor_ver,
+ uint32_t *flags, unsigned *error)
+{
+ unsigned i;
+
+ if (num_attribs == 0)
+ return True;
+
+ if (attribs == NULL) {
+ *error = BadImplementation;
+ return False;
+ }
+
+ *major_ver = 1;
+ *minor_ver = 0;
+
+ for (i = 0; i < num_attribs; i++) {
+ switch (attribs[i * 2]) {
+ case GLX_CONTEXT_MAJOR_VERSION_ARB:
+ *major_ver = attribs[i * 2 + 1];
+ break;
+ case GLX_CONTEXT_MINOR_VERSION_ARB:
+ *minor_ver = attribs[i * 2 + 1];
+ break;
+ case GLX_CONTEXT_FLAGS_ARB:
+ *flags = attribs[i * 2 + 1];
+ break;
+ case GLX_RENDER_TYPE:
+ break;
+ default:
+ /* If an unknown attribute is received, fail.
+ */
+ *error = BadValue;
+ return False;
+ }
+ }
+
+ /* Unknown flag value.
+ */
+ if (*flags & ~(__DRI_CTX_FLAG_DEBUG | __DRI_CTX_FLAG_FORWARD_COMPATIBLE)) {
+ *error = BadValue;
+ return False;
+ }
+
+ *error = Success;
+ return True;
+}
+
+static void
+create_driver_context(__GLXDRIcontext * context,
+ __GLXDRIscreen * screen,
+ __GLXDRIconfig * config,
+ __DRIcontext * driShare,
+ unsigned num_attribs,
+ const uint32_t *attribs,
+ int *error)
+{
+ context->driContext = NULL;
+
+#if __DRI_DRI2_VERSION >= 3
+ if (screen->dri2->base.version >= 3) {
+ uint32_t ctx_attribs[3 * 2];
+ unsigned num_ctx_attribs = 0;
+ unsigned dri_err = 0;
+ unsigned major_ver;
+ unsigned minor_ver;
+ uint32_t flags;
+
+ if (num_attribs != 0) {
+ if (!dri2_convert_glx_attribs(num_attribs, attribs,
+ &major_ver, &minor_ver,
+ &flags, (unsigned *) error))
+ return NULL;
+
+ ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
+ ctx_attribs[num_ctx_attribs++] = major_ver;
+ ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
+ ctx_attribs[num_ctx_attribs++] = minor_ver;
+
+ if (flags != 0) {
+ ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_FLAGS;
+
+ /* The current __DRI_CTX_FLAG_* values are identical to the
+ * GLX_CONTEXT_*_BIT values.
+ */
+ ctx_attribs[num_ctx_attribs++] = flags;
+ }
+ }
+
+ context->driContext =
+ (*screen->dri2->createContextAttribs)(screen->driScreen,
+ __DRI_API_OPENGL,
+ config->driConfig,
+ driShare,
+ num_ctx_attribs / 2,
+ ctx_attribs,
+ &dri_err,
+ context);
+
+ switch (dri_err) {
+ case __DRI_CTX_ERROR_SUCCESS:
+ *error = Success;
+ break;
+ case __DRI_CTX_ERROR_NO_MEMORY:
+ *error = BadAlloc;
+ break;
+ case __DRI_CTX_ERROR_BAD_API:
+ *error = __glXError(GLXBadProfileARB);
+ break;
+ case __DRI_CTX_ERROR_BAD_VERSION:
+ case __DRI_CTX_ERROR_BAD_FLAG:
+ *error = __glXError(GLXBadFBConfig);
+ break;
+ case __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE:
+ case __DRI_CTX_ERROR_UNKNOWN_FLAG:
+ default:
+ *error = BadValue;
+ break;
+ }
+
+ return;
+ }
+#endif
+
+ if (num_attribs != 0) {
+ *error = BadValue;
+ return;
+ }
+
+ context->driContext =
+ (*screen->dri2->createNewContext) (screen->driScreen,
+ config->driConfig,
+ driShare, context);
+}
+
static __GLXcontext *
__glXDRIscreenCreateContext(__GLXscreen * baseScreen,
__GLXconfig * glxConfig,
@@ -397,8 +535,10 @@ __glXDRIscreenCreateContext(__GLXscreen * baseScreen,
driShare = NULL;
context = calloc(1, sizeof *context);
- if (context == NULL)
+ if (context == NULL) {
+ *error = BadAlloc;
return NULL;
+ }
context->base.destroy = __glXDRIcontextDestroy;
context->base.makeCurrent = __glXDRIcontextMakeCurrent;
@@ -407,10 +547,8 @@ __glXDRIscreenCreateContext(__GLXscreen * baseScreen,
context->base.textureFromPixmap = &__glXDRItextureFromPixmap;
context->base.wait = __glXDRIcontextWait;
- context->driContext =
- (*screen->dri2->createNewContext) (screen->driScreen,
- config->driConfig,
- driShare, context);
+ create_driver_context(context, screen, config, driShare, num_attribs,
+ attribs, error);
if (context->driContext == NULL) {
free(context);
return NULL;
@@ -646,6 +784,14 @@ initializeExtensions(__GLXDRIscreen * screen)
__glXEnableExtension(screen->glx_enable_bits, "GLX_INTEL_swap_event");
LogMessage(X_INFO, "AIGLX: enabled GLX_INTEL_swap_event\n");
+#if __DRI_DRI2_VERSION >= 3
+ if (screen->dri2->base.version >= 3) {
+ __glXEnableExtension(screen->glx_enable_bits,
+ "GLX_ARB_create_context");
+ LogMessage(X_INFO, "AIGLX: enabled GLX_ARB_create_context\n");
+ }
+#endif
+
if (DRI2HasSwapControl(pScreen)) {
__glXEnableExtension(screen->glx_enable_bits, "GLX_SGI_swap_control");
__glXEnableExtension(screen->glx_enable_bits, "GLX_MESA_swap_control");
--
1.7.3.4
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