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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 "pipe/p_inlines.h"
#include "pipe/p_defines.h"
#include "svga_context.h"
#include "svga_state.h"
#include "svga_cmd.h"
#include "svga_tgsi.h"
#include "svga_debug.h"
#include "svga_hw_reg.h"
/***********************************************************************
* Hardware update
*/
/* Convert from PIPE_SHADER_* to SVGA3D_SHADERTYPE_*
*/
static int svga_shader_type( int unit )
{
return unit + 1;
}
static int emit_const( struct svga_context *svga,
int unit,
int i,
const float *value )
{
int ret = PIPE_OK;
if (memcmp(svga->state.hw_draw.cb[unit][i], value, 4 * sizeof(float)) != 0) {
if (SVGA_DEBUG & DEBUG_CONSTS)
debug_printf("%s %s %d: %f %f %f %f\n",
__FUNCTION__,
unit == PIPE_SHADER_VERTEX ? "VERT" : "FRAG",
i,
value[0],
value[1],
value[2],
value[3]);
ret = SVGA3D_SetShaderConst( svga->swc,
i,
svga_shader_type(unit),
SVGA3D_CONST_TYPE_FLOAT,
value );
if (ret)
return ret;
memcpy(svga->state.hw_draw.cb[unit][i], value, 4 * sizeof(float));
}
return ret;
}
static int emit_consts( struct svga_context *svga,
int offset,
int unit )
{
struct pipe_screen *screen = svga->pipe.screen;
unsigned count;
const float (*data)[4] = NULL;
unsigned i;
int ret = PIPE_OK;
if (svga->curr.cb[unit] == NULL)
goto done;
count = svga->curr.cb[unit]->size / (4 * sizeof(float));
data = (const float (*)[4])pipe_buffer_map(screen,
svga->curr.cb[unit],
PIPE_BUFFER_USAGE_CPU_READ);
if (data == NULL) {
ret = PIPE_ERROR_OUT_OF_MEMORY;
goto done;
}
for (i = 0; i < count; i++) {
ret = emit_const( svga, unit, offset + i, data[i] );
if (ret)
goto done;
}
done:
if (data)
pipe_buffer_unmap(screen, svga->curr.cb[unit]);
return ret;
}
static int emit_fs_consts( struct svga_context *svga,
unsigned dirty )
{
const struct svga_shader_result *result = svga->state.hw_draw.fs;
const struct svga_fs_compile_key *key = &result->key.fkey;
int ret = 0;
ret = emit_consts( svga, 0, PIPE_SHADER_FRAGMENT );
if (ret)
return ret;
/* The internally generated fragment shader for xor blending
* doesn't have a 'result' struct. It should be fixed to avoid
* this special case, but work around it with a NULL check:
*/
if (result != NULL &&
key->num_unnormalized_coords)
{
unsigned offset = result->shader->info.file_max[TGSI_FILE_CONSTANT] + 1;
int i;
for (i = 0; i < key->num_textures; i++) {
if (key->tex[i].unnormalized) {
struct pipe_texture *tex = svga->curr.texture[i];
float data[4];
data[0] = 1.0 / (float)tex->width0;
data[1] = 1.0 / (float)tex->height0;
data[2] = 1.0;
data[3] = 1.0;
ret = emit_const( svga,
PIPE_SHADER_FRAGMENT,
key->tex[i].width_height_idx + offset,
data );
if (ret)
return ret;
}
}
offset += key->num_unnormalized_coords;
}
return 0;
}
struct svga_tracked_state svga_hw_fs_parameters =
{
"hw fs params",
(SVGA_NEW_FS_CONST_BUFFER |
SVGA_NEW_FS_RESULT |
SVGA_NEW_TEXTURE_BINDING),
emit_fs_consts
};
/***********************************************************************
*/
static int emit_vs_consts( struct svga_context *svga,
unsigned dirty )
{
const struct svga_shader_result *result = svga->state.hw_draw.vs;
const struct svga_vs_compile_key *key = &result->key.vkey;
int ret = 0;
unsigned offset;
/* SVGA_NEW_VS_RESULT
*/
if (result == NULL)
return 0;
/* SVGA_NEW_VS_CONST_BUFFER
*/
ret = emit_consts( svga, 0, PIPE_SHADER_VERTEX );
if (ret)
return ret;
offset = result->shader->info.file_max[TGSI_FILE_CONSTANT] + 1;
/* SVGA_NEW_VS_RESULT
*/
if (key->need_prescale) {
ret = emit_const( svga, PIPE_SHADER_VERTEX, offset++,
svga->state.hw_clear.prescale.scale );
if (ret)
return ret;
ret = emit_const( svga, PIPE_SHADER_VERTEX, offset++,
svga->state.hw_clear.prescale.translate );
if (ret)
return ret;
}
/* SVGA_NEW_ZERO_STRIDE
*/
if (key->zero_stride_vertex_elements) {
unsigned i, curr_zero_stride = 0;
for (i = 0; i < PIPE_MAX_ATTRIBS; ++i) {
if (key->zero_stride_vertex_elements & (1 << i)) {
ret = emit_const( svga, PIPE_SHADER_VERTEX, offset++,
svga->curr.zero_stride_constants +
4 * curr_zero_stride );
if (ret)
return ret;
++curr_zero_stride;
}
}
}
return 0;
}
struct svga_tracked_state svga_hw_vs_parameters =
{
"hw vs params",
(SVGA_NEW_PRESCALE |
SVGA_NEW_VS_CONST_BUFFER |
SVGA_NEW_ZERO_STRIDE |
SVGA_NEW_VS_RESULT),
emit_vs_consts
};
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