glx: Verification of the RENDER_TYPE value.
The change is to correctly handle the value of renderType in GLX context.
In case of the value being incorrect, context creation fails.
---
src/glx/dri2_glx.c | 9 +++++++++
src/glx/dri_glx.c | 5 +++++
src/glx/drisw_glx.c | 10 ++++++++++
src/glx/glxclient.h | 2 ++
src/glx/glxcmds.c | 24 ++++++++++++++++++++++++
src/glx/indirect_glx.c | 5 +++++
src/mesa/drivers/x11/fakeglx.c | 5 ++++-
7 files changed, 59 insertions(+), 1 deletion(-)
diff --git a/src/glx/dri2_glx.c b/src/glx/dri2_glx.c
index d60c675..bf11b25 100644
--- a/src/glx/dri2_glx.c
+++ b/src/glx/dri2_glx.c
@@ -205,6 +205,11 @@ dri2_create_context(struct glx_screen *base,
__GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) config_base;
__DRIcontext *shared = NULL;
+ /* Check the renderType value */
+ if (!validate_renderType_against_config(config_base, renderType)) {
+ return NULL;
+ }
+
if (shareList) {
/* If the shareList context is not a DRI2 context, we cannot possibly
* create a DRI2 context that shares it.
@@ -277,6 +282,10 @@ dri2_create_context_attribs(struct glx_screen *base,
error))
goto error_exit;
+ /* Check the renderType value */
+ if (!validate_renderType_against_config(config_base, renderType))
+ goto error_exit;
+
if (shareList) {
pcp_shared = (struct dri2_context *) shareList;
shared = pcp_shared->driContext;
diff --git a/src/glx/dri_glx.c b/src/glx/dri_glx.c
index cc45734..63eb884 100644
--- a/src/glx/dri_glx.c
+++ b/src/glx/dri_glx.c
@@ -581,6 +581,11 @@ dri_create_context(struct glx_screen *base,
if (!psc->base.driScreen)
return NULL;
+ /* Check the renderType value */
+ if (!validate_renderType_against_config(config_base, renderType)) {
+ return NULL;
+ }
+
if (shareList) {
/* If the shareList context is not a DRI context, we cannot possibly
* create a DRI context that shares it.
diff --git a/src/glx/drisw_glx.c b/src/glx/drisw_glx.c
index ef0e52b..335140c 100644
--- a/src/glx/drisw_glx.c
+++ b/src/glx/drisw_glx.c
@@ -380,6 +380,11 @@ drisw_create_context(struct glx_screen *base,
if (!psc->base.driScreen)
return NULL;
+ /* Check the renderType value */
+ if (!validate_renderType_against_config(config_base, renderType)) {
+ return NULL;
+ }
+
if (shareList) {
/* If the shareList context is not a DRISW context, we cannot possibly
* create a DRISW context that shares it.
@@ -451,6 +456,11 @@ drisw_create_context_attribs(struct glx_screen *base,
error))
return NULL;
+ /* Check the renderType value */
+ if (!validate_renderType_against_config(config_base, renderType)) {
+ return NULL;
+ }
+
if (reset != __DRI_CTX_RESET_NO_NOTIFICATION)
return NULL;
diff --git a/src/glx/glxclient.h b/src/glx/glxclient.h
index fc8f31c..7e5db0a 100644
--- a/src/glx/glxclient.h
+++ b/src/glx/glxclient.h
@@ -803,6 +803,8 @@ extern int
applegl_create_display(struct glx_display *display);
#endif
+extern Bool validate_renderType_against_config(const struct glx_config
*config, int renderType);
+
extern struct glx_drawable *GetGLXDrawable(Display *dpy, GLXDrawable drawable);
extern int InitGLXDrawable(Display *dpy, struct glx_drawable *glxDraw,
diff --git a/src/glx/glxcmds.c b/src/glx/glxcmds.c
index 80977c8..502295f 100644
--- a/src/glx/glxcmds.c
+++ b/src/glx/glxcmds.c
@@ -224,6 +224,30 @@ ValidateGLXFBConfig(Display * dpy, GLXFBConfig fbconfig)
return NULL;
}
+/**
+ * Verifies context's GLX_RENDER_TYPE value with config.
+ * \param config GLX FBConfig which will support the returned renderType.
+ * \param renderType The context render type to be verified.
+ * \return True if the value of context renderType was approved, or 0 if no
valid value was found.
+ */
+Bool
+validate_renderType_against_config(const struct glx_config *config, int
renderType)
+{
+ switch (renderType) {
+ case GLX_RGBA_TYPE:
+ return (config->renderType & GLX_RGBA_BIT) != 0;
+ case GLX_COLOR_INDEX_TYPE:
+ return (config->renderType & GLX_COLOR_INDEX_BIT) != 0;
+ case GLX_RGBA_FLOAT_TYPE_ARB:
+ return (config->renderType & GLX_RGBA_FLOAT_BIT_ARB) != 0;
+ case GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT:
+ return (config->renderType & GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT) != 0;
+ default:
+ break;
+ }
+ return 0;
+}
+
_X_HIDDEN Bool
glx_context_init(struct glx_context *gc,
struct glx_screen *psc, struct glx_config *config)
diff --git a/src/glx/indirect_glx.c b/src/glx/indirect_glx.c
index 47e514d..b42bc55 100644
--- a/src/glx/indirect_glx.c
+++ b/src/glx/indirect_glx.c
@@ -352,6 +352,11 @@ indirect_create_context(struct glx_screen *psc,
return NULL;
}
+ /* Check the renderType value */
+ if (!validate_renderType_against_config(mode, renderType)) {
+ return NULL;
+ }
+
/* Allocate our context record */
gc = calloc(1, sizeof *gc);
if (!gc) {
diff --git a/src/mesa/drivers/x11/fakeglx.c b/src/mesa/drivers/x11/fakeglx.c
index 7a2cfbe..c48fc40 100644
--- a/src/mesa/drivers/x11/fakeglx.c
+++ b/src/mesa/drivers/x11/fakeglx.c
@@ -2325,7 +2325,10 @@ Fake_glXCreateNewContext( Display *dpy, GLXFBConfig
config,
XMesaVisual xmvis = (XMesaVisual) config;
if (!dpy || !config ||
- (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
+ (renderType != GLX_RGBA_TYPE &&
+ renderType != GLX_COLOR_INDEX_TYPE &&
+ renderType != GLX_RGBA_FLOAT_TYPE_ARB &&
+ renderType != GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT))
return 0;
glxCtx = CALLOC_STRUCT(fake_glx_context);
--
1.7.9.5
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