From: Paul Berry <stereotype...@gmail.com>
---
src/mesa/drivers/common/driverfuncs.c | 3 +++
src/mesa/main/dd.h | 18 ++++++++++++++++++
2 files changed, 21 insertions(+)
diff --git a/src/mesa/drivers/common/driverfuncs.c
b/src/mesa/drivers/common/driverfuncs.c
index 6069138..642cd91 100644
--- a/src/mesa/drivers/common/driverfuncs.c
+++ b/src/mesa/drivers/common/driverfuncs.c
@@ -194,20 +194,23 @@ _mesa_init_driver_functions(struct dd_function_table
*driver)
driver->LightingSpaceChange = NULL;
/* GL_ARB_texture_storage */
driver->AllocTextureStorage = _mesa_AllocTextureStorage_sw;
/* GL_ARB_texture_view */
driver->TextureView = NULL;
/* GL_ARB_texture_multisample */
driver->GetSamplePosition = NULL;
+
+ /* Multithreading */
+ driver->SetBackgroundContext = NULL;
}
/**
* Call the ctx->Driver.* state functions with current values to initialize
* driver state.
* Only the Intel drivers use this so far.
*/
void
_mesa_init_driver_state(struct gl_context *ctx)
diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index 63fc621..f300ad6 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -1018,20 +1018,38 @@ struct dd_function_table {
const GLuint *num_groups,
const GLuint *group_size);
/*@}*/
/**
* Query information about memory. Device memory is e.g. VRAM. Staging
* memory is e.g. GART. All sizes are in kilobytes.
*/
void (*QueryMemoryInfo)(struct gl_context *ctx,
struct gl_memory_info *info);
+
+ /**
+ * Indicate that this thread is being used by Mesa as a background drawing
+ * thread for the given GL context.
+ *
+ * If this function is called more than once from any given thread, each
+ * subsequent call overrides the context that was passed in the previous
+ * call. Mesa takes advantage of this to re-use a background thread to
+ * perform drawing on behalf of multiple contexts.
+ *
+ * Mesa may sometimes call this function from a non-background thread
+ * (i.e. a thread that has already been bound to a context using
+ * __DriverAPIRec::MakeCurrent()); when this happens, ctx will be equal to
+ * the context that is bound to this thread.
+ *
+ * Mesa will only call this function if GL multithreading is enabled.
+ */
+ void (*SetBackgroundContext)(struct gl_context *ctx);
};
/**
* Per-vertex functions.
*
* These are the functions which can appear between glBegin and glEnd.
* Depending on whether we're inside or outside a glBegin/End pair
* and whether we're in immediate mode or building a display list, these
* functions behave differently. This structure allows us to switch
--
2.9.3
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