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panfrost: Allow for dynamic UBO count

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We already uploaded UBOs, but only a fixed number (1) for uniforms;
let's upload as many as we compute we need.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This commit is contained in:
Alyssa Rosenzweig
2019-06-20 16:21:48 -07:00
parent 5d60be4e24
commit 4c6d751274
1 changed files with 16 additions and 11 deletions
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src/gallium/drivers/panfrost/pan_context.c
+16 -11
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@@ -1002,13 +1002,14 @@ panfrost_map_constant_buffer_cpu(struct panfrost_constant_buffer *buf, unsigned
}
/* Compute number of UBOs active (more specifically, compute the highest UBO
* number addressable -- if there are gaps, include them in the count anyway)
* */
* number addressable -- if there are gaps, include them in the count anyway).
* We always include UBO #0 in the count, since we *need* uniforms enabled for
* sysvals. */
static unsigned
panfrost_ubo_count(struct panfrost_context *ctx, enum pipe_shader_type stage)
{
unsigned mask = ctx->constant_buffer[stage].enabled_mask;
unsigned mask = ctx->constant_buffer[stage].enabled_mask | 1;
return 32 - __builtin_clz(mask);
}
@@ -1277,16 +1278,20 @@ panfrost_emit_for_draw(struct panfrost_context *ctx, bool with_vertex_data)
unreachable("Invalid shader stage\n");
}
/* Also attach the same buffer as a UBO for extended access */
/* Next up, attach UBOs. UBO #0 is the uniforms we just
* uploaded */
struct mali_uniform_buffer_meta uniform_buffers[] = {
{
.size = MALI_POSITIVE((2 + uniform_count)),
.ptr = transfer.gpu >> 2,
},
};
unsigned ubo_count = panfrost_ubo_count(ctx, i);
assert(ubo_count >= 1);
mali_ptr ubufs = panfrost_upload_transient(ctx, uniform_buffers, sizeof(uniform_buffers));
size_t sz = sizeof(struct mali_uniform_buffer_meta) * ubo_count;
struct mali_uniform_buffer_meta *ubos = calloc(sz, 1);
/* Upload uniforms as a UBO */
ubos[0].size = MALI_POSITIVE((2 + uniform_count));
ubos[0].ptr = transfer.gpu >> 2;
mali_ptr ubufs = panfrost_upload_transient(ctx, ubos, sz);
postfix->uniforms = transfer.gpu;
postfix->uniform_buffers = ubufs;