[Mesa-dev] [PATCH 09/25] radeonsi: add code for combining and uploading shaders from 3 shader parts

[Marek Olšák]

From: Marek Olšák <marek.olsak at amd.com>

---
 src/gallium/drivers/radeonsi/si_shader.c | 35 ++++++++++++++++++++++++--------
 src/gallium/drivers/radeonsi/si_shader.h |  9 ++++++++
 2 files changed, 36 insertions(+), 8 deletions(-)

diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index dbb9217..a6a0984 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -4036,26 +4036,45 @@ void si_shader_apply_scratch_relocs(struct si_context *sctx,
 
 int si_shader_binary_upload(struct si_screen *sscreen, struct si_shader *shader)
 {
-	const struct radeon_shader_binary *binary = &shader->binary;
-	unsigned code_size = binary->code_size + binary->rodata_size;
+	const struct radeon_shader_binary *prolog =
+		shader->prolog ? &shader->prolog->binary : NULL;
+	const struct radeon_shader_binary *epilog =
+		shader->epilog ? &shader->epilog->binary : NULL;
+	const struct radeon_shader_binary *mainb = &shader->binary;
+	unsigned bo_size =
+		(prolog ? prolog->code_size : 0) +
+		mainb->code_size +
+		(epilog ? epilog->code_size : mainb->rodata_size);
 	unsigned char *ptr;
 
+	assert(!prolog || !prolog->rodata_size);
+	assert((!prolog && !epilog) || !mainb->rodata_size);
+	assert(!epilog || !epilog->rodata_size);
+
 	r600_resource_reference(&shader->bo, NULL);
 	shader->bo = si_resource_create_custom(&sscreen->b.b,
 					       PIPE_USAGE_IMMUTABLE,
-					       code_size);
+					       bo_size);
 	if (!shader->bo)
 		return -ENOMEM;
 
+	/* Upload. */
 	ptr = sscreen->b.ws->buffer_map(shader->bo->buf, NULL,
 					PIPE_TRANSFER_READ_WRITE);
-	util_memcpy_cpu_to_le32(ptr, binary->code, binary->code_size);
-	if (binary->rodata_size > 0) {
-		ptr += binary->code_size;
-		util_memcpy_cpu_to_le32(ptr, binary->rodata,
-					binary->rodata_size);
+
+	if (prolog) {
+		util_memcpy_cpu_to_le32(ptr, prolog->code, prolog->code_size);
+		ptr += prolog->code_size;
 	}
 
+	util_memcpy_cpu_to_le32(ptr, mainb->code, mainb->code_size);
+	ptr += mainb->code_size;
+
+	if (epilog)
+		util_memcpy_cpu_to_le32(ptr, epilog->code, epilog->code_size);
+	else if (mainb->rodata_size > 0)
+		util_memcpy_cpu_to_le32(ptr, mainb->rodata, mainb->rodata_size);
+
 	sscreen->b.ws->buffer_unmap(shader->bo->buf);
 	return 0;
 }
diff --git a/src/gallium/drivers/radeonsi/si_shader.h b/src/gallium/drivers/radeonsi/si_shader.h
index 9331156..4c3c14a 100644
--- a/src/gallium/drivers/radeonsi/si_shader.h
+++ b/src/gallium/drivers/radeonsi/si_shader.h
@@ -304,6 +304,9 @@ struct si_shader {
 	struct si_shader_selector	*selector;
 	struct si_shader		*next_variant;
 
+	struct si_shader_part		*prolog;
+	struct si_shader_part		*epilog;
+
 	struct si_shader		*gs_copy_shader;
 	struct si_pm4_state		*pm4;
 	struct r600_resource		*bo;
@@ -322,6 +325,12 @@ struct si_shader {
 	unsigned		nr_param_exports;
 };
 
+struct si_shader_part {
+	struct si_shader_part *next;
+	struct radeon_shader_binary binary;
+	struct si_shader_config config;
+};
+
 static inline struct tgsi_shader_info *si_get_vs_info(struct si_context *sctx)
 {
 	if (sctx->gs_shader.cso)
-- 
2.5.0