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-rw-r--r--src/intel/vulkan/anv_cmd_buffer.c1
-rw-r--r--src/intel/vulkan/anv_pipeline.c22
-rw-r--r--src/intel/vulkan/anv_private.h2
-rw-r--r--src/intel/vulkan/genX_cmd_buffer.c78
-rw-r--r--src/intel/vulkan/genX_pipeline_util.h12
5 files changed, 71 insertions, 44 deletions
diff --git a/src/intel/vulkan/anv_cmd_buffer.c b/src/intel/vulkan/anv_cmd_buffer.c
index bba24e82337..db7793ee462 100644
--- a/src/intel/vulkan/anv_cmd_buffer.c
+++ b/src/intel/vulkan/anv_cmd_buffer.c
@@ -130,6 +130,7 @@ anv_cmd_state_reset(struct anv_cmd_buffer *cmd_buffer)
state->descriptors_dirty = 0;
state->push_constants_dirty = 0;
state->pipeline = NULL;
+ state->push_constant_stages = 0;
state->restart_index = UINT32_MAX;
state->dynamic = default_dynamic_state;
state->need_query_wa = true;
diff --git a/src/intel/vulkan/anv_pipeline.c b/src/intel/vulkan/anv_pipeline.c
index d63e50e228b..789bc1a4f1e 100644
--- a/src/intel/vulkan/anv_pipeline.c
+++ b/src/intel/vulkan/anv_pipeline.c
@@ -940,28 +940,6 @@ anv_compute_urb_partition(struct anv_pipeline *pipeline)
pipeline->urb.start[MESA_SHADER_TESS_EVAL] = push_constant_chunks;
pipeline->urb.size[MESA_SHADER_TESS_EVAL] = 1;
pipeline->urb.entries[MESA_SHADER_TESS_EVAL] = 0;
-
- const unsigned stages =
- _mesa_bitcount(pipeline->active_stages & VK_SHADER_STAGE_ALL_GRAPHICS);
- unsigned size_per_stage = stages ? (push_constant_kb / stages) : 0;
- unsigned used_kb = 0;
-
- /* Broadwell+ and Haswell gt3 require that the push constant sizes be in
- * units of 2KB. Incidentally, these are the same platforms that have
- * 32KB worth of push constant space.
- */
- if (push_constant_kb == 32)
- size_per_stage &= ~1u;
-
- for (int i = MESA_SHADER_VERTEX; i < MESA_SHADER_FRAGMENT; i++) {
- pipeline->urb.push_size[i] =
- (pipeline->active_stages & (1 << i)) ? size_per_stage : 0;
- used_kb += pipeline->urb.push_size[i];
- assert(used_kb <= push_constant_kb);
- }
-
- pipeline->urb.push_size[MESA_SHADER_FRAGMENT] =
- push_constant_kb - used_kb;
}
static void
diff --git a/src/intel/vulkan/anv_private.h b/src/intel/vulkan/anv_private.h
index 6ac0745b665..d8fffc3bf6d 100644
--- a/src/intel/vulkan/anv_private.h
+++ b/src/intel/vulkan/anv_private.h
@@ -1177,6 +1177,7 @@ struct anv_cmd_state {
uint32_t restart_index;
struct anv_vertex_binding vertex_bindings[MAX_VBS];
struct anv_descriptor_set * descriptors[MAX_SETS];
+ VkShaderStageFlags push_constant_stages;
struct anv_push_constants * push_constants[MESA_SHADER_STAGES];
struct anv_state binding_tables[MESA_SHADER_STAGES];
struct anv_state samplers[MESA_SHADER_STAGES];
@@ -1411,7 +1412,6 @@ struct anv_pipeline {
uint32_t scratch_start[MESA_SHADER_STAGES];
uint32_t total_scratch;
struct {
- uint8_t push_size[MESA_SHADER_FRAGMENT + 1];
uint32_t start[MESA_SHADER_GEOMETRY + 1];
uint32_t size[MESA_SHADER_GEOMETRY + 1];
uint32_t entries[MESA_SHADER_GEOMETRY + 1];
diff --git a/src/intel/vulkan/genX_cmd_buffer.c b/src/intel/vulkan/genX_cmd_buffer.c
index ee47c2926e0..f5e3530b59d 100644
--- a/src/intel/vulkan/genX_cmd_buffer.c
+++ b/src/intel/vulkan/genX_cmd_buffer.c
@@ -274,6 +274,72 @@ void genX(CmdPipelineBarrier)(
}
}
+static void
+cmd_buffer_alloc_push_constants(struct anv_cmd_buffer *cmd_buffer)
+{
+ VkShaderStageFlags stages = cmd_buffer->state.pipeline->active_stages;
+
+ /* In order to avoid thrash, we assume that vertex and fragment stages
+ * always exist. In the rare case where one is missing *and* the other
+ * uses push concstants, this may be suboptimal. However, avoiding stalls
+ * seems more important.
+ */
+ stages |= VK_SHADER_STAGE_FRAGMENT_BIT | VK_SHADER_STAGE_VERTEX_BIT;
+
+ if (stages == cmd_buffer->state.push_constant_stages)
+ return;
+
+#if GEN_GEN >= 8
+ const unsigned push_constant_kb = 32;
+#elif GEN_IS_HASWELL
+ const unsigned push_constant_kb = cmd_buffer->device->info.gt == 3 ? 32 : 16;
+#else
+ const unsigned push_constant_kb = 16;
+#endif
+
+ const unsigned num_stages =
+ _mesa_bitcount(stages & VK_SHADER_STAGE_ALL_GRAPHICS);
+ unsigned size_per_stage = push_constant_kb / num_stages;
+
+ /* Broadwell+ and Haswell gt3 require that the push constant sizes be in
+ * units of 2KB. Incidentally, these are the same platforms that have
+ * 32KB worth of push constant space.
+ */
+ if (push_constant_kb == 32)
+ size_per_stage &= ~1u;
+
+ uint32_t kb_used = 0;
+ for (int i = MESA_SHADER_VERTEX; i < MESA_SHADER_FRAGMENT; i++) {
+ unsigned push_size = (stages & (1 << i)) ? size_per_stage : 0;
+ anv_batch_emit(&cmd_buffer->batch,
+ GENX(3DSTATE_PUSH_CONSTANT_ALLOC_VS), alloc) {
+ alloc._3DCommandSubOpcode = 18 + i;
+ alloc.ConstantBufferOffset = (push_size > 0) ? kb_used : 0;
+ alloc.ConstantBufferSize = push_size;
+ }
+ kb_used += push_size;
+ }
+
+ anv_batch_emit(&cmd_buffer->batch,
+ GENX(3DSTATE_PUSH_CONSTANT_ALLOC_PS), alloc) {
+ alloc.ConstantBufferOffset = kb_used;
+ alloc.ConstantBufferSize = push_constant_kb - kb_used;
+ }
+
+ cmd_buffer->state.push_constant_stages = stages;
+
+ /* From the BDW PRM for 3DSTATE_PUSH_CONSTANT_ALLOC_VS:
+ *
+ * "The 3DSTATE_CONSTANT_VS must be reprogrammed prior to
+ * the next 3DPRIMITIVE command after programming the
+ * 3DSTATE_PUSH_CONSTANT_ALLOC_VS"
+ *
+ * Since 3DSTATE_PUSH_CONSTANT_ALLOC_VS is programmed as part of
+ * pipeline setup, we need to dirty push constants.
+ */
+ cmd_buffer->state.push_constants_dirty |= VK_SHADER_STAGE_ALL_GRAPHICS;
+}
+
static uint32_t
cmd_buffer_flush_push_constants(struct anv_cmd_buffer *cmd_buffer)
{
@@ -384,16 +450,10 @@ genX(cmd_buffer_flush_state)(struct anv_cmd_buffer *cmd_buffer)
anv_batch_emit_batch(&cmd_buffer->batch, &pipeline->batch);
- /* From the BDW PRM for 3DSTATE_PUSH_CONSTANT_ALLOC_VS:
- *
- * "The 3DSTATE_CONSTANT_VS must be reprogrammed prior to
- * the next 3DPRIMITIVE command after programming the
- * 3DSTATE_PUSH_CONSTANT_ALLOC_VS"
- *
- * Since 3DSTATE_PUSH_CONSTANT_ALLOC_VS is programmed as part of
- * pipeline setup, we need to dirty push constants.
+ /* If the pipeline changed, we may need to re-allocate push constant
+ * space in the URB.
*/
- cmd_buffer->state.push_constants_dirty |= VK_SHADER_STAGE_ALL_GRAPHICS;
+ cmd_buffer_alloc_push_constants(cmd_buffer);
}
#if GEN_GEN <= 7
diff --git a/src/intel/vulkan/genX_pipeline_util.h b/src/intel/vulkan/genX_pipeline_util.h
index ecbe436e4ea..2ed55e016dc 100644
--- a/src/intel/vulkan/genX_pipeline_util.h
+++ b/src/intel/vulkan/genX_pipeline_util.h
@@ -205,18 +205,6 @@ emit_urb_setup(struct anv_pipeline *pipeline)
}
#endif
- unsigned push_start = 0;
- for (int i = MESA_SHADER_VERTEX; i <= MESA_SHADER_FRAGMENT; i++) {
- unsigned push_size = pipeline->urb.push_size[i];
- anv_batch_emit(&pipeline->batch,
- GENX(3DSTATE_PUSH_CONSTANT_ALLOC_VS), alloc) {
- alloc._3DCommandSubOpcode = 18 + i;
- alloc.ConstantBufferOffset = (push_size > 0) ? push_start : 0;
- alloc.ConstantBufferSize = push_size;
- }
- push_start += pipeline->urb.push_size[i];
- }
-
for (int i = MESA_SHADER_VERTEX; i <= MESA_SHADER_GEOMETRY; i++) {
anv_batch_emit(&pipeline->batch, GENX(3DSTATE_URB_VS), urb) {
urb._3DCommandSubOpcode = 48 + i;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 16:02:44 +0000