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/*
* Copyright 2007 VMware, Inc.
* Copyright 2016 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file
*
* Common helper functions for PBO up- and downloads.
*/
#include "state_tracker/st_context.h"
#include "state_tracker/st_pbo.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_screen.h"
#include "cso_cache/cso_context.h"
void
st_init_pbo_helpers(struct st_context *st)
{
struct pipe_context *pipe = st->pipe;
struct pipe_screen *screen = pipe->screen;
st->pbo_upload.enabled =
screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OBJECTS) &&
screen->get_param(screen, PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT) >= 1 &&
screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_INTEGERS);
if (!st->pbo_upload.enabled)
return;
st->pbo_upload.rgba_only =
screen->get_param(screen, PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY);
if (screen->get_param(screen, PIPE_CAP_TGSI_INSTANCEID)) {
if (screen->get_param(screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT)) {
st->pbo_upload.upload_layers = true;
} else if (screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES) >= 3) {
st->pbo_upload.upload_layers = true;
st->pbo_upload.use_gs = true;
}
}
/* Blend state */
memset(&st->pbo_upload.blend, 0, sizeof(struct pipe_blend_state));
st->pbo_upload.blend.rt[0].colormask = PIPE_MASK_RGBA;
/* Rasterizer state */
memset(&st->pbo_upload.raster, 0, sizeof(struct pipe_rasterizer_state));
st->pbo_upload.raster.half_pixel_center = 1;
}
void
st_destroy_pbo_helpers(struct st_context *st)
{
if (st->pbo_upload.fs) {
cso_delete_fragment_shader(st->cso_context, st->pbo_upload.fs);
st->pbo_upload.fs = NULL;
}
if (st->pbo_upload.gs) {
cso_delete_geometry_shader(st->cso_context, st->pbo_upload.gs);
st->pbo_upload.gs = NULL;
}
if (st->pbo_upload.vs) {
cso_delete_vertex_shader(st->cso_context, st->pbo_upload.vs);
st->pbo_upload.vs = NULL;
}
}
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