[Mesa-dev] [PATCH 1/2] gallium/pp: use user constant buffers

Marek Olšák maraeo at gmail.com
Wed Apr 4 20:11:17 UTC 2018


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

This fixes a radeonsi crash.
---
 src/gallium/auxiliary/cso_cache/cso_context.c  | 17 ++++++++++++
 src/gallium/auxiliary/cso_cache/cso_context.h  |  3 +++
 src/gallium/auxiliary/postprocess/pp_mlaa.c    | 37 ++++----------------------
 src/gallium/auxiliary/postprocess/pp_private.h |  1 -
 4 files changed, 25 insertions(+), 33 deletions(-)

diff --git a/src/gallium/auxiliary/cso_cache/cso_context.c b/src/gallium/auxiliary/cso_cache/cso_context.c
index 3fa57f16ff4..3a3a63a3327 100644
--- a/src/gallium/auxiliary/cso_cache/cso_context.c
+++ b/src/gallium/auxiliary/cso_cache/cso_context.c
@@ -1540,20 +1540,37 @@ cso_set_constant_buffer_resource(struct cso_context *cso,
       cb.buffer = buffer;
       cb.buffer_offset = 0;
       cb.buffer_size = buffer->width0;
       cb.user_buffer = NULL;
       cso_set_constant_buffer(cso, shader_stage, index, &cb);
    } else {
       cso_set_constant_buffer(cso, shader_stage, index, NULL);
    }
 }
 
+void
+cso_set_constant_user_buffer(struct cso_context *cso,
+                             enum pipe_shader_type shader_stage,
+                             unsigned index, void *ptr, unsigned size)
+{
+   if (ptr) {
+      struct pipe_constant_buffer cb;
+      cb.buffer = NULL;
+      cb.buffer_offset = 0;
+      cb.buffer_size = size;
+      cb.user_buffer = ptr;
+      cso_set_constant_buffer(cso, shader_stage, index, &cb);
+   } else {
+      cso_set_constant_buffer(cso, shader_stage, index, NULL);
+   }
+}
+
 void
 cso_save_constant_buffer_slot0(struct cso_context *cso,
                                enum pipe_shader_type shader_stage)
 {
    util_copy_constant_buffer(&cso->aux_constbuf_saved[shader_stage],
                              &cso->aux_constbuf_current[shader_stage]);
 }
 
 void
 cso_restore_constant_buffer_slot0(struct cso_context *cso,
diff --git a/src/gallium/auxiliary/cso_cache/cso_context.h b/src/gallium/auxiliary/cso_cache/cso_context.h
index b1bc0813442..3a4e808f0c0 100644
--- a/src/gallium/auxiliary/cso_cache/cso_context.h
+++ b/src/gallium/auxiliary/cso_cache/cso_context.h
@@ -207,20 +207,23 @@ cso_set_shader_images(struct cso_context *cso,
 
 /* constant buffers */
 
 void cso_set_constant_buffer(struct cso_context *cso,
                              enum pipe_shader_type shader_stage,
                              unsigned index, struct pipe_constant_buffer *cb);
 void cso_set_constant_buffer_resource(struct cso_context *cso,
                                       enum pipe_shader_type shader_stage,
                                       unsigned index,
                                       struct pipe_resource *buffer);
+void cso_set_constant_user_buffer(struct cso_context *cso,
+                                  enum pipe_shader_type shader_stage,
+                                  unsigned index, void *ptr, unsigned size);
 void cso_save_constant_buffer_slot0(struct cso_context *cso,
                                     enum pipe_shader_type shader_stage);
 void cso_restore_constant_buffer_slot0(struct cso_context *cso,
                                        enum pipe_shader_type shader_stage);
 
 
 /* drawing */
 
 void
 cso_draw_vbo(struct cso_context *cso,
diff --git a/src/gallium/auxiliary/postprocess/pp_mlaa.c b/src/gallium/auxiliary/postprocess/pp_mlaa.c
index 0edd01f3f5d..610cedbd1b3 100644
--- a/src/gallium/auxiliary/postprocess/pp_mlaa.c
+++ b/src/gallium/auxiliary/postprocess/pp_mlaa.c
@@ -50,76 +50,64 @@
 #include "util/u_inlines.h"
 #include "util/u_memory.h"
 #include "util/u_string.h"
 #include "pipe/p_screen.h"
 
 #define IMM_SPACE 80
 
 static float constants[] = { 1, 1, 0, 0 };
 static unsigned int dimensions[2] = { 0, 0 };
 
-/** Upload the constants. */
-static void
-up_consts(struct pp_queue_t *ppq)
-{
-   struct pipe_context *pipe = ppq->p->pipe;
-
-   pipe->buffer_subdata(pipe, ppq->constbuf, PIPE_TRANSFER_WRITE,
-                        0, sizeof(constants), constants);
-}
-
 /** Run function of the MLAA filter. */
 static void
 pp_jimenezmlaa_run(struct pp_queue_t *ppq, struct pipe_resource *in,
                    struct pipe_resource *out, unsigned int n, bool iscolor)
 {
 
    struct pp_program *p = ppq->p;
 
    struct pipe_depth_stencil_alpha_state mstencil;
    struct pipe_sampler_view v_tmp, *arr[3];
 
    unsigned int w = 0;
    unsigned int h = 0;
 
    const struct pipe_stencil_ref ref = { {1} };
 
    /* Insufficient initialization checks. */
    assert(p);
    assert(ppq);
-   assert(ppq->constbuf);
    assert(ppq->areamaptex);
    assert(ppq->inner_tmp);
    assert(ppq->shaders[n]);
 
    w = p->framebuffer.width;
    h = p->framebuffer.height;
 
    memset(&mstencil, 0, sizeof(mstencil));
 
    cso_set_stencil_ref(p->cso, &ref);
 
    /* Init the pixel size constant */
    if (dimensions[0] != p->framebuffer.width ||
        dimensions[1] != p->framebuffer.height) {
       constants[0] = 1.0f / p->framebuffer.width;
       constants[1] = 1.0f / p->framebuffer.height;
 
-      up_consts(ppq);
       dimensions[0] = p->framebuffer.width;
       dimensions[1] = p->framebuffer.height;
    }
 
-   cso_set_constant_buffer_resource(p->cso, PIPE_SHADER_VERTEX,
-                                    0, ppq->constbuf);
-   cso_set_constant_buffer_resource(p->cso, PIPE_SHADER_FRAGMENT,
-                                    0, ppq->constbuf);
+   cso_set_constant_user_buffer(p->cso, PIPE_SHADER_VERTEX,
+                                0, constants, sizeof(constants));
+   cso_set_constant_user_buffer(p->cso, PIPE_SHADER_FRAGMENT,
+                                0, constants, sizeof(constants));
 
    mstencil.stencil[0].enabled = 1;
    mstencil.stencil[0].valuemask = mstencil.stencil[0].writemask = ~0;
    mstencil.stencil[0].func = PIPE_FUNC_ALWAYS;
    mstencil.stencil[0].fail_op = PIPE_STENCIL_OP_KEEP;
    mstencil.stencil[0].zfail_op = PIPE_STENCIL_OP_KEEP;
    mstencil.stencil[0].zpass_op = PIPE_STENCIL_OP_REPLACE;
 
    p->framebuffer.zsbuf = ppq->stencils;
 
@@ -232,29 +220,20 @@ pp_jimenezmlaa_init_run(struct pp_queue_t *ppq, unsigned int n,
    char *tmp_text = NULL;
 
    tmp_text = CALLOC(sizeof(blend2fs_1) + sizeof(blend2fs_2) +
                      IMM_SPACE, sizeof(char));
 
    if (!tmp_text) {
       pp_debug("Failed to allocate shader space\n");
       return FALSE;
    }
 
-   ppq->constbuf = pipe_buffer_create(ppq->p->screen,
-                                      PIPE_BIND_CONSTANT_BUFFER,
-                                      PIPE_USAGE_DEFAULT,
-                                      sizeof(constants));
-   if (ppq->constbuf == NULL) {
-      pp_debug("Failed to allocate constant buffer\n");
-      goto fail;
-   }
-
    pp_debug("mlaa: using %u max search steps\n", val);
 
    util_sprintf(tmp_text, "%s"
                 "IMM FLT32 {    %.8f,     0.0000,     0.0000,     0.0000}\n"
                 "%s\n", blend2fs_1, (float) val, blend2fs_2);
 
    memset(&res, 0, sizeof(res));
 
    res.target = PIPE_TEXTURE_2D;
    res.format = PIPE_FORMAT_R8G8_UNORM;
@@ -345,19 +324,13 @@ pp_jimenezmlaa_color(struct pp_queue_t *ppq, struct pipe_resource *in,
 }
 
 
 /**
  * Short wrapper to free the mlaa filter resources. Shaders are freed in
  * the common code in pp_free.
  */
 void
 pp_jimenezmlaa_free(struct pp_queue_t *ppq, unsigned int n)
 {
-   if (ppq->areamaptex) {
-      pipe_resource_reference(&ppq->areamaptex, NULL);
-   }
-
-   if (ppq->constbuf) {
-      pipe_resource_reference(&ppq->constbuf, NULL);
-   }
+   pipe_resource_reference(&ppq->areamaptex, NULL);
 }
 
diff --git a/src/gallium/auxiliary/postprocess/pp_private.h b/src/gallium/auxiliary/postprocess/pp_private.h
index 0d032124115..710909b71e2 100644
--- a/src/gallium/auxiliary/postprocess/pp_private.h
+++ b/src/gallium/auxiliary/postprocess/pp_private.h
@@ -69,21 +69,20 @@ struct pp_queue_t
    pp_func *pp_queue;           /* An array of pp_funcs */
    unsigned int n_filters;      /* Number of enabled filters */
 
    struct pipe_resource *tmp[2];        /* Two temp FBOs for the queue */
    struct pipe_resource *inner_tmp[3];  /* Three for filter use */
 
    unsigned int n_tmp, n_inner_tmp;
 
    struct pipe_resource *depth; /* depth of original input */
    struct pipe_resource *stencil;       /* stencil shared by inner_tmps */
-   struct pipe_resource *constbuf;      /* MLAA constant buffer */
    struct pipe_resource *areamaptex;    /* MLAA area map texture */
 
    struct pipe_surface *tmps[2], *inner_tmps[3], *stencils;
 
    void ***shaders;             /* Shaders in TGSI form */
    unsigned int *filters;       /* Active filter to filters.h mapping. */
    struct pp_program *p;
 
    bool fbos_init;
 };
-- 
2.15.1



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