freedreno: add image view state tracking

It is unfortunate that image state isn't a real CSO, since (at least for
a4xx/a5xx) it is a combination of sampler and "SSBO" image state, and it
would be useful to pre-compute the state block "register" values rather
than doing it at emit time.

Signed-off-by: Rob Clark <[email protected]>

2 files changed, 56 insertions, 0 deletions

diff --git a/src/gallium/drivers/freedreno/freedreno_context.h b/src/gallium/drivers/freedreno/freedreno_context.h
index f10f7ef4ea5..61f1fb4ba4f 100644
--- a/src/gallium/drivers/freedreno/freedreno_context.h
+++ b/src/gallium/drivers/freedreno/freedreno_context.h
@@ -78,6 +78,12 @@ struct fd_shaderbuf_stateobj {
 	uint32_t dirty_mask;
 };
 
+struct fd_shaderimg_stateobj {
+	struct pipe_image_view si[PIPE_MAX_SHADER_IMAGES];
+	uint32_t enabled_mask;
+	uint32_t dirty_mask;
+};
+
 struct fd_vertexbuf_stateobj {
 	struct pipe_vertex_buffer vb[PIPE_MAX_ATTRIBS];
 	unsigned count;
@@ -149,6 +155,7 @@ enum fd_dirty_shader_state {
 	FD_DIRTY_SHADER_CONST = BIT(1),
 	FD_DIRTY_SHADER_TEX   = BIT(2),
 	FD_DIRTY_SHADER_SSBO  = BIT(3),
+	FD_DIRTY_SHADER_IMAGE = BIT(4),
 };
 
 struct fd_context {
@@ -274,6 +281,7 @@ struct fd_context {
 	struct pipe_viewport_state viewport;
 	struct fd_constbuf_stateobj constbuf[PIPE_SHADER_TYPES];
 	struct fd_shaderbuf_stateobj shaderbuf[PIPE_SHADER_TYPES];
+	struct fd_shaderimg_stateobj shaderimg[PIPE_SHADER_TYPES];
 	struct fd_streamout_stateobj streamout;
 	struct pipe_clip_state ucp;
 
diff --git a/src/gallium/drivers/freedreno/freedreno_state.c b/src/gallium/drivers/freedreno/freedreno_state.c
index 012e2b3e9bf..0b37bd31cc6 100644
--- a/src/gallium/drivers/freedreno/freedreno_state.c
+++ b/src/gallium/drivers/freedreno/freedreno_state.c
@@ -162,6 +162,53 @@ fd_set_shader_buffers(struct pipe_context *pctx,
 }
 
 static void
+fd_set_shader_images(struct pipe_context *pctx,
+		enum pipe_shader_type shader,
+		unsigned start, unsigned count,
+		const struct pipe_image_view *images)
+{
+	struct fd_context *ctx = fd_context(pctx);
+	struct fd_shaderimg_stateobj *so = &ctx->shaderimg[shader];
+
+	unsigned mask = 0;
+
+	if (images) {
+		for (unsigned i = 0; i < count; i++) {
+			unsigned n = i + start;
+			struct pipe_image_view *buf = &so->si[n];
+
+			if ((buf->resource == images[i].resource) &&
+					(buf->format == images[i].format) &&
+					(buf->access == images[i].access) &&
+					!memcmp(&buf->u, &images[i].u, sizeof(buf->u)))
+				continue;
+
+			mask |= BIT(n);
+			util_copy_image_view(buf, &images[i]);
+
+			if (buf->resource)
+				so->enabled_mask |= BIT(n);
+			else
+				so->enabled_mask &= ~BIT(n);
+		}
+	} else {
+		mask = (BIT(count) - 1) << start;
+
+		for (unsigned i = 0; i < count; i++) {
+			unsigned n = i + start;
+			struct pipe_image_view *img = &so->si[n];
+
+			pipe_resource_reference(&img->resource, NULL);
+		}
+
+		so->enabled_mask &= ~mask;
+	}
+
+	so->dirty_mask |= mask;
+	ctx->dirty_shader[shader] |= FD_DIRTY_SHADER_IMAGE;
+}
+
+static void
 fd_set_framebuffer_state(struct pipe_context *pctx,
 		const struct pipe_framebuffer_state *framebuffer)
 {
@@ -468,6 +515,7 @@ fd_state_init(struct pipe_context *pctx)
 	pctx->set_sample_mask = fd_set_sample_mask;
 	pctx->set_constant_buffer = fd_set_constant_buffer;
 	pctx->set_shader_buffers = fd_set_shader_buffers;
+	pctx->set_shader_images = fd_set_shader_images;
 	pctx->set_framebuffer_state = fd_set_framebuffer_state;
 	pctx->set_polygon_stipple = fd_set_polygon_stipple;
 	pctx->set_scissor_states = fd_set_scissor_states;