etnaviv: Consolidate buffer references from framebuffers

We were leaking surfaces because the references taken in
etna_set_framebuffer_state weren't being released on context destroy.

Instead of just directly releasing those references in
etna_context_destroy, use the util_copy_framebuffer_state helper.

Take the chance to remove the duplicated buffer references in
compiled_framebuffer_state to avoid confusion.

The leak can be reproduced with a client that continuously creates and
destroys contexts.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reported-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
(cherry picked from commit bf1dfcc3e8120400c9a78d03dd914a786728b5f7)
[Emil: resolve trivial conflict - dummy_rt does not exist in branch]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>

Conflicts:
	src/gallium/drivers/etnaviv/etnaviv_context.c

3 files changed, 9 insertions, 10 deletions

diff --git a/src/gallium/drivers/etnaviv/etnaviv_context.c b/src/gallium/drivers/etnaviv/etnaviv_context.c
index 3038d210e10..303dff583aa 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_context.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_context.c
@@ -60,6 +60,8 @@ etna_context_destroy(struct pipe_context *pctx)
 {
    struct etna_context *ctx = etna_context(pctx);
 
+   util_copy_framebuffer_state(&ctx->framebuffer_s, NULL);
+
    if (ctx->primconvert)
       util_primconvert_destroy(ctx->primconvert);
 
@@ -296,10 +298,10 @@ etna_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
    if (DBG_ENABLED(ETNA_DBG_FLUSH_ALL))
       pctx->flush(pctx, NULL, 0);
 
-   if (ctx->framebuffer.cbuf)
-      etna_resource(ctx->framebuffer.cbuf->texture)->seqno++;
-   if (ctx->framebuffer.zsbuf)
-      etna_resource(ctx->framebuffer.zsbuf->texture)->seqno++;
+   if (ctx->framebuffer_s.cbufs[0])
+      etna_resource(ctx->framebuffer_s.cbufs[0]->texture)->seqno++;
+   if (ctx->framebuffer_s.zsbuf)
+      etna_resource(ctx->framebuffer_s.zsbuf->texture)->seqno++;
    if (info->index_size && indexbuf != info->index.resource)
       pipe_resource_reference(&indexbuf, NULL);
 }
diff --git a/src/gallium/drivers/etnaviv/etnaviv_internal.h b/src/gallium/drivers/etnaviv/etnaviv_internal.h
index 3424d8a7715..77214d9ccba 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_internal.h
+++ b/src/gallium/drivers/etnaviv/etnaviv_internal.h
@@ -182,7 +182,6 @@ struct compiled_viewport_state {
 
 /* Compiled pipe_framebuffer_state */
 struct compiled_framebuffer_state {
-   struct pipe_surface *cbuf, *zsbuf; /* keep reference to surfaces */
    uint32_t GL_MULTI_SAMPLE_CONFIG;
    uint32_t PE_COLOR_FORMAT;
    uint32_t PE_DEPTH_CONFIG;
diff --git a/src/gallium/drivers/etnaviv/etnaviv_state.c b/src/gallium/drivers/etnaviv/etnaviv_state.c
index 87ba10b0dc9..520cc5a775f 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_state.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_state.c
@@ -37,6 +37,7 @@
 #include "etnaviv_surface.h"
 #include "etnaviv_translate.h"
 #include "etnaviv_util.h"
+#include "util/u_framebuffer.h"
 #include "util/u_helpers.h"
 #include "util/u_inlines.h"
 #include "util/u_math.h"
@@ -130,7 +131,6 @@ etna_set_framebuffer_state(struct pipe_context *pctx,
       assert(res->layout & ETNA_LAYOUT_BIT_TILE); /* Cannot render to linear surfaces */
       etna_update_render_resource(pctx, cbuf->base.texture);
 
-      pipe_surface_reference(&cs->cbuf, &cbuf->base);
       cs->PE_COLOR_FORMAT =
          VIVS_PE_COLOR_FORMAT_FORMAT(translate_rs_format(cbuf->base.format)) |
          VIVS_PE_COLOR_FORMAT_COMPONENTS__MASK |
@@ -182,7 +182,6 @@ etna_set_framebuffer_state(struct pipe_context *pctx,
 
       nr_samples_color = cbuf->base.texture->nr_samples;
    } else {
-      pipe_surface_reference(&cs->cbuf, NULL);
       /* Clearing VIVS_PE_COLOR_FORMAT_COMPONENTS__MASK and
        * VIVS_PE_COLOR_FORMAT_OVERWRITE prevents us from overwriting the
        * color target */
@@ -201,7 +200,6 @@ etna_set_framebuffer_state(struct pipe_context *pctx,
 
       etna_update_render_resource(pctx, zsbuf->base.texture);
 
-      pipe_surface_reference(&cs->zsbuf, &zsbuf->base);
       assert(res->layout &ETNA_LAYOUT_BIT_TILE); /* Cannot render to linear surfaces */
 
       uint32_t depth_format = translate_depth_format(zsbuf->base.format);
@@ -252,7 +250,6 @@ etna_set_framebuffer_state(struct pipe_context *pctx,
 
       nr_samples_depth = zsbuf->base.texture->nr_samples;
    } else {
-      pipe_surface_reference(&cs->zsbuf, NULL);
       cs->PE_DEPTH_CONFIG = VIVS_PE_DEPTH_CONFIG_DEPTH_MODE_NONE;
       cs->PE_DEPTH_ADDR.bo = NULL;
       cs->PE_DEPTH_STRIDE = 0;
@@ -325,7 +322,8 @@ etna_set_framebuffer_state(struct pipe_context *pctx,
     */
    cs->PE_LOGIC_OP = VIVS_PE_LOGIC_OP_SINGLE_BUFFER(ctx->specs.single_buffer ? 3 : 0);
 
-   ctx->framebuffer_s = *sv; /* keep copy of original structure */
+   /* keep copy of original structure */
+   util_copy_framebuffer_state(&ctx->framebuffer_s, sv);
    ctx->dirty |= ETNA_DIRTY_FRAMEBUFFER | ETNA_DIRTY_DERIVE_TS;
 }