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/**********************************************************
* Copyright 2008-2009 VMware, Inc. All rights reserved.
*
* 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 the rights to use, copy,
* modify, merge, publish, distribute, sublicense, 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 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
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* 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.
*
**********************************************************/
#include "util/u_inlines.h"
#include "pipe/p_defines.h"
#include "util/u_math.h"
#include "tgsi/tgsi_parse.h"
#include "svga_context.h"
#include "svga_resource_buffer.h"
/***********************************************************************
* Constant buffers
*/
struct svga_constbuf
{
unsigned type;
float (*data)[4];
unsigned count;
};
static void svga_set_constant_buffer(struct pipe_context *pipe,
uint shader, uint index,
struct pipe_constant_buffer *cb)
{
struct svga_screen *svgascreen = svga_screen(pipe->screen);
struct svga_context *svga = svga_context(pipe);
struct pipe_resource *buf = cb ? cb->buffer : NULL;
unsigned buffer_size = 0;
if (cb) {
buffer_size = cb->buffer_size;
if (cb->user_buffer) {
buf = svga_user_buffer_create(pipe->screen,
(void *) cb->user_buffer,
cb->buffer_size,
PIPE_BIND_CONSTANT_BUFFER);
}
}
assert(shader < PIPE_SHADER_TYPES);
assert(index < Elements(svga->curr.constbufs[shader]));
assert(index < svgascreen->max_const_buffers);
(void) svgascreen;
pipe_resource_reference(&svga->curr.constbufs[shader][index].buffer, buf);
/* Make sure the constant buffer size to be updated is within the
* limit supported by the device.
*/
svga->curr.constbufs[shader][index].buffer_size =
MIN2(buffer_size, SVGA_MAX_CONST_BUF_SIZE);
svga->curr.constbufs[shader][index].buffer_offset = cb ? cb->buffer_offset : 0;
svga->curr.constbufs[shader][index].user_buffer = NULL; /* not used */
if (shader == PIPE_SHADER_FRAGMENT)
svga->dirty |= SVGA_NEW_FS_CONST_BUFFER;
else if (shader == PIPE_SHADER_VERTEX)
svga->dirty |= SVGA_NEW_VS_CONST_BUFFER;
else
svga->dirty |= SVGA_NEW_GS_CONST_BUFFER;
/* update bitmask of dirty const buffers */
svga->state.dirty_constbufs[shader] |= (1 << index);
if (cb && cb->user_buffer) {
pipe_resource_reference(&buf, NULL);
}
}
void svga_init_constbuffer_functions( struct svga_context *svga )
{
svga->pipe.set_constant_buffer = svga_set_constant_buffer;
}
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