64 lines
2.2 KiB
C
64 lines
2.2 KiB
C
/*
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* Copyright 2016 Red Hat.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "sp_context.h"
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#include "sp_buffer.h"
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#include "sp_texture.h"
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#include "util/format/u_format.h"
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static void *
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sp_tgsi_ssbo_lookup(const struct tgsi_buffer *buffer,
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uint32_t unit,
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uint32_t *size)
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{
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struct sp_tgsi_buffer *sp_buf = (struct sp_tgsi_buffer *)buffer;
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*size = 0;
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if (unit >= PIPE_MAX_SHADER_BUFFERS)
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return NULL;
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struct pipe_shader_buffer *bview = &sp_buf->sp_bview[unit];
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/* Sanity check the view size is within our buffer. */
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if (!bview->buffer ||
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bview->buffer_offset > bview->buffer->width0 ||
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bview->buffer_size > bview->buffer->width0 - bview->buffer_offset) {
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return NULL;
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}
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struct softpipe_resource *spr = softpipe_resource(bview->buffer);
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*size = bview->buffer_size;
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return (char *)spr->data + bview->buffer_offset;
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}
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struct sp_tgsi_buffer *
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sp_create_tgsi_buffer(void)
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{
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struct sp_tgsi_buffer *buf = CALLOC_STRUCT(sp_tgsi_buffer);
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if (!buf)
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return NULL;
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buf->base.lookup = sp_tgsi_ssbo_lookup;
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return buf;
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};
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