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authorMichel Dänzer <michel@tungstengraphics.com>2007-11-30 11:40:06 +0100
committerMichel Dänzer <michel@tungstengraphics.com>2007-12-03 09:28:49 +0100
commit2af613e0b8e6f89cc7528ff5a969e18f077e61fc (patch)
treed6d93fd4b2cc73b270a7187725f38e35338cffa3 /src
parent556cf9abff75eaa56c3ea11f1c59cb04d30c0b92 (diff)
i915: Fix up state changes for i8xx.
Diffstat (limited to 'src')
-rw-r--r--src/mesa/drivers/dri/i915/i830_vtbl.c62
1 files changed, 56 insertions, 6 deletions
diff --git a/src/mesa/drivers/dri/i915/i830_vtbl.c b/src/mesa/drivers/dri/i915/i830_vtbl.c
index eecff2729f..c23c02c060 100644
--- a/src/mesa/drivers/dri/i915/i830_vtbl.c
+++ b/src/mesa/drivers/dri/i915/i830_vtbl.c
@@ -383,9 +383,15 @@ do { \
} while (0)
static GLuint
+get_dirty(struct i830_hw_state *state)
+{
+ return state->active & ~state->emitted;
+}
+
+static GLuint
get_state_size(struct i830_hw_state *state)
{
- GLuint dirty = state->active & ~state->emitted;
+ GLuint dirty = get_dirty(state);
GLuint sz = 0;
GLuint i;
@@ -416,7 +422,7 @@ get_state_size(struct i830_hw_state *state)
/* Push the state into the sarea and/or texture memory.
*/
static void
-i830_emit_state(struct intel_context *intel)
+i830_do_emit_state(struct intel_context *intel)
{
struct i830_context *i830 = i830_context(&intel->ctx);
struct i830_hw_state *state = i830->current;
@@ -433,10 +439,32 @@ i830_emit_state(struct intel_context *intel)
*/
intel_batchbuffer_require_space(intel->batch, get_state_size(state), 0);
+ /* Workaround. There are cases I haven't been able to track down
+ * where we aren't emitting a full state at the start of a new
+ * batchbuffer. This code spots that we are on a new batchbuffer
+ * and forces a full state emit no matter what.
+ *
+ * In the normal case state->emitted is already zero, this code is
+ * another set of checks to make sure it really is.
+ */
+ if (intel->batch->id != intel->last_state_batch_id ||
+ intel->batch->map == intel->batch->ptr)
+ {
+ state->emitted = 0;
+ intel_batchbuffer_require_space(intel->batch, get_state_size(state), 0);
+ }
+
/* Do this here as we may have flushed the batchbuffer above,
* causing more state to be dirty!
*/
- dirty = state->active & ~state->emitted;
+ dirty = get_dirty(state);
+ state->emitted |= dirty;
+ assert(get_dirty(state) == 0);
+
+ if (intel->batch->id != intel->last_state_batch_id) {
+ assert(dirty & I830_UPLOAD_CTX);
+ intel->last_state_batch_id = intel->batch->id;
+ }
if (dirty & I830_UPLOAD_INVARIENT) {
DBG("I830_UPLOAD_INVARIENT:\n");
@@ -515,7 +543,30 @@ i830_emit_state(struct intel_context *intel)
}
}
- state->emitted |= dirty;
+ intel->batch->dirty_state &= ~dirty;
+ assert(get_dirty(state) == 0);
+}
+
+static void
+i830_emit_state(struct intel_context *intel)
+{
+ struct i830_context *i830 = i830_context(&intel->ctx);
+
+ i830_do_emit_state( intel );
+
+ /* Second chance - catch batchbuffer wrap in the middle of state
+ * emit. This shouldn't happen but it has been observed in
+ * testing.
+ */
+ if (get_dirty( i830->current )) {
+ /* Force a full re-emit if this happens.
+ */
+ i830->current->emitted = 0;
+ i830_do_emit_state( intel );
+ }
+
+ assert(get_dirty(i830->current) == 0);
+ assert((intel->batch->dirty_state & (1<<1)) == 0);
}
static void
@@ -652,8 +703,7 @@ i830_assert_not_dirty( struct intel_context *intel )
{
struct i830_context *i830 = i830_context(&intel->ctx);
struct i830_hw_state *state = i830->current;
- GLuint dirty = state->active & ~state->emitted;
- assert(!dirty);
+ assert(!get_dirty(state));
}