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st/mesa: assume that user constant buffers are always supported

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Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
This commit is contained in:
Marek Olšák
2018-01-10 20:03:28 +01:00
parent 5981a5226e
commit 85bbcdda34
4 changed files with 6 additions and 34 deletions
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13
src/mesa/state_tracker/st_atom_constbuf.c
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@@ -101,22 +101,9 @@ void st_upload_constants(struct st_context *st, struct gl_program *prog)
_mesa_shader_write_subroutine_indices(st->ctx, stage);
/* We always need to get a new buffer, to keep the drivers simple and
* avoid gratuitous rendering synchronization.
* Let's use a user buffer to avoid an unnecessary copy.
*/
if (!st->has_user_constbuf) {
cb.buffer = NULL;
cb.user_buffer = NULL;
u_upload_data(st->pipe->const_uploader, 0, paramBytes,
st->ctx->Const.UniformBufferOffsetAlignment,
params->ParameterValues, &cb.buffer_offset, &cb.buffer);
u_upload_unmap(st->pipe->const_uploader);
} else {
cb.buffer = NULL;
cb.user_buffer = params->ParameterValues;
cb.buffer_offset = 0;
}
cb.buffer_size = paramBytes;
if (ST_DEBUG & DEBUG_CONSTANTS) {

2
src/mesa/state_tracker/st_context.c
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@@ -372,8 +372,6 @@ st_create_context_priv(struct gl_context *ctx, struct pipe_context *pipe,
st->dirty = ST_ALL_STATES_MASK;
st->has_user_constbuf =
screen->get_param(screen, PIPE_CAP_USER_CONSTANT_BUFFERS);
st->can_bind_const_buffer_as_vertex =
screen->get_param(screen, PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX);

1
src/mesa/state_tracker/st_context.h
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@@ -110,7 +110,6 @@ struct st_context
boolean has_shareable_shaders;
boolean has_half_float_packing;
boolean has_multi_draw_indirect;
boolean has_user_constbuf;
boolean can_bind_const_buffer_as_vertex;
/**

12
src/mesa/state_tracker/st_pbo.c
View File

@@ -259,21 +259,9 @@ st_pbo_draw(struct st_context *st, const struct st_pbo_addresses *addr,
{
struct pipe_constant_buffer cb;
if (!st->has_user_constbuf) {
cb.buffer = NULL;
cb.user_buffer = NULL;
u_upload_data(st->pipe->const_uploader, 0, sizeof(addr->constants),
st->ctx->Const.UniformBufferOffsetAlignment,
&addr->constants, &cb.buffer_offset, &cb.buffer);
if (!cb.buffer)
return false;
u_upload_unmap(st->pipe->const_uploader);
} else {
cb.buffer = NULL;
cb.user_buffer = &addr->constants;
cb.buffer_offset = 0;
}
cb.buffer_size = sizeof(addr->constants);
cso_set_constant_buffer(cso, PIPE_SHADER_FRAGMENT, 0, &cb);