[igt-dev] [PATCH i-g-t v4 1/4] lib/rendercopy_gen7: Reorganizing batch allocations

* [igt-dev] [PATCH i-g-t v4 1/4] lib/rendercopy_gen7: Reorganizing batch allocations
@ 2018-04-20 11:15 Lukasz Kalamarz
  2018-04-20 11:15 ` [igt-dev] [PATCH i-g-t v4 2/4] lib/rendercopy_gen7: Cosmetic changes in code Lukasz Kalamarz
                   ` (6 more replies)
  0 siblings, 7 replies; 14+ messages in thread
From: Lukasz Kalamarz @ 2018-04-20 11:15 UTC (permalink / raw)
  To: igt-dev

This lib was written in a different manner than all other libs,
which was causing some issues during refactoring. Previous
implementation was using two pointers (ptr and state) to
access two parts of batchbuffer in the same time. Current
implementation is reusing ptr with a downside of needing
to ensure the state/command ordering is proper.

v3: Modified commit message and added batch boundary check

Signed-off-by: Lukasz Kalamarz <lukasz.kalamarz@intel.com>
Cc: Katarzyna Dec <katarzyna.dec@intel.com>
Cc: Radoslaw Szwichtenberg <radoslaw.szwichtenberg@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
---
 lib/rendercopy_gen7.c | 77 ++++++++++++++++++++++++++++++---------------------
 1 file changed, 45 insertions(+), 32 deletions(-)

diff --git a/lib/rendercopy_gen7.c b/lib/rendercopy_gen7.c
index 3b92406..2649ae3 100644
--- a/lib/rendercopy_gen7.c
+++ b/lib/rendercopy_gen7.c
@@ -35,7 +35,7 @@ static const uint32_t ps_kernel[][4] = {
 static uint32_t
 batch_used(struct intel_batchbuffer *batch)
 {
-	return batch->state - batch->buffer;
+	return batch->ptr - batch->buffer;
 }
 
 static uint32_t
@@ -43,7 +43,7 @@ batch_align(struct intel_batchbuffer *batch, uint32_t align)
 {
 	uint32_t offset = batch_used(batch);
 	offset = ALIGN(offset, align);
-	batch->state = batch->buffer + offset;
+	batch->ptr = batch->buffer + offset;
 	return offset;
 }
 
@@ -51,7 +51,7 @@ static void *
 batch_alloc(struct intel_batchbuffer *batch, uint32_t size, uint32_t align)
 {
 	uint32_t offset = batch_align(batch, align);
-	batch->state += size;
+	batch->ptr += size;
 	return memset(batch->buffer + offset, 0, size);
 }
 
@@ -198,15 +198,9 @@ gen7_create_vertex_buffer(struct intel_batchbuffer *batch,
 static void gen7_emit_vertex_buffer(struct intel_batchbuffer *batch,
 				    int src_x, int src_y,
 				    int dst_x, int dst_y,
-				    int width, int height)
+				    int width, int height,
+				    uint32_t offset)
 {
-	uint32_t offset;
-
-	offset = gen7_create_vertex_buffer(batch,
-					   src_x, src_y,
-					   dst_x, dst_y,
-					   width, height);
-
 	OUT_BATCH(GEN7_3DSTATE_VERTEX_BUFFERS | (5 - 2));
 	OUT_BATCH(0 << GEN7_VB0_BUFFER_INDEX_SHIFT |
 		  GEN7_VB0_VERTEXDATA |
@@ -238,10 +232,11 @@ gen7_bind_surfaces(struct intel_batchbuffer *batch,
 static void
 gen7_emit_binding_table(struct intel_batchbuffer *batch,
 			struct igt_buf *src,
-			struct igt_buf *dst)
+			struct igt_buf *dst,
+			uint32_t bind_surf_off)
 {
 	OUT_BATCH(GEN7_3DSTATE_BINDING_TABLE_POINTERS_PS | (2 - 2));
-	OUT_BATCH(gen7_bind_surfaces(batch, src, dst));
+	OUT_BATCH(bind_surf_off);
 }
 
 static void
@@ -298,13 +293,14 @@ gen7_create_cc_viewport(struct intel_batchbuffer *batch)
 }
 
 static void
-gen7_emit_cc(struct intel_batchbuffer *batch)
+gen7_emit_cc(struct intel_batchbuffer *batch, uint32_t blend_state,
+	     uint32_t cc_viewport)
 {
-        OUT_BATCH(GEN7_3DSTATE_BLEND_STATE_POINTERS | (2 - 2));
-        OUT_BATCH(gen7_create_blend_state(batch));
+	OUT_BATCH(GEN7_3DSTATE_BLEND_STATE_POINTERS | (2 - 2));
+	OUT_BATCH(blend_state);
 
-        OUT_BATCH(GEN7_3DSTATE_VIEWPORT_STATE_POINTERS_CC | (2 - 2));
-	OUT_BATCH(gen7_create_cc_viewport(batch));
+	OUT_BATCH(GEN7_3DSTATE_VIEWPORT_STATE_POINTERS_CC | (2 - 2));
+	OUT_BATCH(cc_viewport);
 }
 
 static uint32_t
@@ -327,10 +323,10 @@ gen7_create_sampler(struct intel_batchbuffer *batch)
 }
 
 static void
-gen7_emit_sampler(struct intel_batchbuffer *batch)
+gen7_emit_sampler(struct intel_batchbuffer *batch, uint32_t sampler_off)
 {
-        OUT_BATCH(GEN7_3DSTATE_SAMPLER_STATE_POINTERS_PS | (2 - 2));
-        OUT_BATCH(gen7_create_sampler(batch));
+	OUT_BATCH(GEN7_3DSTATE_SAMPLER_STATE_POINTERS_PS | (2 - 2));
+	OUT_BATCH(sampler_off);
 }
 
 static void
@@ -468,7 +464,7 @@ gen7_emit_sbe(struct intel_batchbuffer *batch)
 }
 
 static void
-gen7_emit_ps(struct intel_batchbuffer *batch)
+gen7_emit_ps(struct intel_batchbuffer *batch, uint32_t kernel_off)
 {
 	int threads;
 
@@ -478,7 +474,7 @@ gen7_emit_ps(struct intel_batchbuffer *batch)
 		threads = 40 << IVB_PS_MAX_THREADS_SHIFT;
 
 	OUT_BATCH(GEN7_3DSTATE_PS | (8 - 2));
-	OUT_BATCH(batch_copy(batch, ps_kernel, sizeof(ps_kernel), 64));
+	OUT_BATCH(kernel_off);
 	OUT_BATCH(1 << GEN7_PS_SAMPLER_COUNT_SHIFT |
 		  2 << GEN7_PS_BINDING_TABLE_ENTRY_COUNT_SHIFT);
 	OUT_BATCH(0); /* scratch address */
@@ -535,12 +531,29 @@ void gen7_render_copyfunc(struct intel_batchbuffer *batch,
 			  unsigned width, unsigned height,
 			  struct igt_buf *dst, unsigned dst_x, unsigned dst_y)
 {
+	uint32_t ps_binding_table, ps_sampler_off, ps_kernel_off;
+	uint32_t blend_state, cc_viewport;
+	uint32_t vertex_buffer;
 	uint32_t batch_end;
 
 	intel_batchbuffer_flush_with_context(batch, context);
 
-	batch->state = &batch->buffer[BATCH_STATE_SPLIT];
+	batch->ptr = &batch->buffer[BATCH_STATE_SPLIT];
 
+
+	blend_state = gen7_create_blend_state(batch);
+	cc_viewport = gen7_create_cc_viewport(batch);
+	ps_sampler_off = gen7_create_sampler(batch);
+	ps_kernel_off = batch_copy(batch, ps_kernel, sizeof(ps_kernel), 64);
+	vertex_buffer = gen7_create_vertex_buffer(batch,
+						  src_x, src_y,
+						  dst_x, dst_y,
+						  width, height);
+	ps_binding_table = gen7_bind_surfaces(batch, src, dst);
+
+	igt_assert(batch->ptr < &batch->buffer[4095]);
+
+	batch->ptr = batch->buffer;
 	OUT_BATCH(GEN7_PIPELINE_SELECT | PIPELINE_SELECT_3D);
 
 	gen7_emit_state_base_address(batch);
@@ -556,18 +569,18 @@ void gen7_render_copyfunc(struct intel_batchbuffer *batch,
 	gen7_emit_wm(batch);
 	gen7_emit_streamout(batch);
 	gen7_emit_null_depth_buffer(batch);
-
-	gen7_emit_cc(batch);
-        gen7_emit_sampler(batch);
+	gen7_emit_cc(batch, blend_state, cc_viewport);
+	gen7_emit_sampler(batch, ps_sampler_off);
         gen7_emit_sbe(batch);
-        gen7_emit_ps(batch);
+	gen7_emit_ps(batch, ps_kernel_off);
         gen7_emit_vertex_elements(batch);
-        gen7_emit_vertex_buffer(batch,
-				src_x, src_y, dst_x, dst_y, width, height);
-	gen7_emit_binding_table(batch, src, dst);
+	gen7_emit_vertex_buffer(batch, src_x, src_y,
+				dst_x, dst_y, width,
+				height, vertex_buffer);
+	gen7_emit_binding_table(batch, src, dst, ps_binding_table);
 	gen7_emit_drawing_rectangle(batch, dst);
 
-        OUT_BATCH(GEN7_3DPRIMITIVE | (7- 2));
+	OUT_BATCH(GEN7_3DPRIMITIVE | (7 - 2));
         OUT_BATCH(GEN7_3DPRIMITIVE_VERTEX_SEQUENTIAL | _3DPRIM_RECTLIST);
         OUT_BATCH(3);
         OUT_BATCH(0);
-- 
2.9.5

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