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Revert "gallium/hud: don't use user vertex buffers"

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The approach taken in this commit only works on drivers that expose
the PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT capability. For drivers
that don't, the buffer has been unmapped by the time we get to
hud_draw_colored_prims, leading to crashes.

It's not easy to fix the code, but drivers that do support coherent
mapping will most likely do the right think themseleves, so let's just
go back to using user-buffers here.

This reverts commit 4fe1fd4df4.

Fixes: 4fe1fd4df4 ("gallium/hud: don't use user vertex buffers")
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/3106
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5417>
This commit is contained in:
Erik Faye-Lund 2020-06-10 19:56:49 +02:00 • committed by Marge Bot
parent 167fa2887f
commit 7b86920ae2
2 changed files with 8 additions and 22 deletions
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28
src/gallium/auxiliary/hud/hud_context.c
View file

@ -73,13 +73,7 @@ hud_draw_colored_prims(struct hud_context *hud, unsigned prim,
int xoffset, int yoffset, float yscale)
{
struct cso_context *cso = hud->cso;
unsigned size = num_vertices * hud->color_prims.vbuf.stride;
/* If a recording context is inactive, don't draw anything. */
if (size > hud->color_prims.buffer_size)
return;
memcpy(hud->color_prims.vertices, buffer, size);
struct pipe_vertex_buffer vbuffer = {0};
hud->constants.color[0] = r;
hud->constants.color[1] = g;
@ -91,13 +85,13 @@ hud_draw_colored_prims(struct hud_context *hud, unsigned prim,
hud->constants.scale[1] = yscale * hud_scale;
cso_set_constant_buffer(cso, PIPE_SHADER_VERTEX, 0, &hud->constbuf);
cso_set_vertex_buffers(cso, 0, 1, &hud->color_prims.vbuf);
vbuffer.is_user_buffer = true;
vbuffer.buffer.user = buffer;
vbuffer.stride = 2 * sizeof(float);
cso_set_vertex_buffers(cso, 0, 1, &vbuffer);
cso_set_fragment_shader_handle(hud->cso, hud->fs_color);
cso_draw_arrays(cso, prim, 0, num_vertices);
hud->color_prims.vertices += size / sizeof(float);
hud->color_prims.vbuf.buffer_offset += size;
hud->color_prims.buffer_size -= size;
}
static void
@ -645,7 +639,6 @@ hud_stop_queries(struct hud_context *hud, struct pipe_context *pipe)
hud_prepare_vertices(hud, &hud->bg, 16 * 256, 2 * sizeof(float));
hud_prepare_vertices(hud, &hud->whitelines, 4 * 256, 2 * sizeof(float));
hud_prepare_vertices(hud, &hud->text, 16 * 1024, 4 * sizeof(float));
hud_prepare_vertices(hud, &hud->color_prims, 32 * 1024, 2 * sizeof(float));
/* Allocate everything once and divide the storage into 3 portions
* manually, because u_upload_alloc can unmap memory from previous calls.
@ -653,8 +646,7 @@ hud_stop_queries(struct hud_context *hud, struct pipe_context *pipe)
u_upload_alloc(pipe->stream_uploader, 0,
hud->bg.buffer_size +
hud->whitelines.buffer_size +
hud->text.buffer_size +
hud->color_prims.buffer_size,
hud->text.buffer_size,
16, &hud->bg.vbuf.buffer_offset, &hud->bg.vbuf.buffer.resource,
(void**)&hud->bg.vertices);
if (!hud->bg.vertices)
@ -662,7 +654,6 @@ hud_stop_queries(struct hud_context *hud, struct pipe_context *pipe)
pipe_resource_reference(&hud->whitelines.vbuf.buffer.resource, hud->bg.vbuf.buffer.resource);
pipe_resource_reference(&hud->text.vbuf.buffer.resource, hud->bg.vbuf.buffer.resource);
pipe_resource_reference(&hud->color_prims.vbuf.buffer.resource, hud->bg.vbuf.buffer.resource);
hud->whitelines.vbuf.buffer_offset = hud->bg.vbuf.buffer_offset +
hud->bg.buffer_size;
@ -674,11 +665,6 @@ hud_stop_queries(struct hud_context *hud, struct pipe_context *pipe)
hud->text.vertices = hud->whitelines.vertices +
hud->whitelines.buffer_size / sizeof(float);
hud->color_prims.vbuf.buffer_offset = hud->text.vbuf.buffer_offset +
hud->text.buffer_size;
hud->color_prims.vertices = hud->text.vertices +
hud->text.buffer_size / sizeof(float);
/* prepare all graphs */
hud_batch_query_update(hud->batch_query, pipe);

2
src/gallium/auxiliary/hud/hud_private.h
View file

@ -90,7 +90,7 @@ struct hud_context {
unsigned max_num_vertices;
unsigned num_vertices;
unsigned buffer_size;
} text, bg, whitelines, color_prims;
} text, bg, whitelines;
bool has_srgb;
};