/**********************************************************
* 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_format.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "tgsi/tgsi_parse.h"
#include "svga_context.h"
#include "svga_resource_texture.h"
#include "svga_debug.h"
static INLINE unsigned
translate_wrap_mode(unsigned wrap)
{
switch (wrap) {
case PIPE_TEX_WRAP_REPEAT:
return SVGA3D_TEX_ADDRESS_WRAP;
case PIPE_TEX_WRAP_CLAMP:
return SVGA3D_TEX_ADDRESS_CLAMP;
case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
/* Unfortunately SVGA3D_TEX_ADDRESS_EDGE not respected by
* hardware.
*/
return SVGA3D_TEX_ADDRESS_CLAMP;
case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
return SVGA3D_TEX_ADDRESS_BORDER;
case PIPE_TEX_WRAP_MIRROR_REPEAT:
return SVGA3D_TEX_ADDRESS_MIRROR;
case PIPE_TEX_WRAP_MIRROR_CLAMP:
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
return SVGA3D_TEX_ADDRESS_MIRRORONCE;
default:
return SVGA3D_TEX_ADDRESS_WRAP;
}
}
static INLINE unsigned translate_img_filter( unsigned filter )
{
switch (filter) {
case PIPE_TEX_FILTER_NEAREST: return SVGA3D_TEX_FILTER_NEAREST;
case PIPE_TEX_FILTER_LINEAR: return SVGA3D_TEX_FILTER_LINEAR;
default:
return SVGA3D_TEX_FILTER_NEAREST;
}
}
static INLINE unsigned translate_mip_filter( unsigned filter )
{
switch (filter) {
case PIPE_TEX_MIPFILTER_NONE: return SVGA3D_TEX_FILTER_NONE;
case PIPE_TEX_MIPFILTER_NEAREST: return SVGA3D_TEX_FILTER_NEAREST;
case PIPE_TEX_MIPFILTER_LINEAR: return SVGA3D_TEX_FILTER_LINEAR;
default:
return SVGA3D_TEX_FILTER_NONE;
}
}
static void *
svga_create_sampler_state(struct pipe_context *pipe,
const struct pipe_sampler_state *sampler)
{
struct svga_context *svga = svga_context(pipe);
struct svga_sampler_state *cso = CALLOC_STRUCT( svga_sampler_state );
if (!cso)
return NULL;
cso->mipfilter = translate_mip_filter(sampler->min_mip_filter);
cso->magfilter = translate_img_filter( sampler->mag_img_filter );
cso->minfilter = translate_img_filter( sampler->min_img_filter );
cso->aniso_level = MAX2( sampler->max_anisotropy, 1 );
if(sampler->max_anisotropy)
cso->magfilter = cso->minfilter = SVGA3D_TEX_FILTER_ANISOTROPIC;
cso->lod_bias = sampler->lod_bias;
cso->addressu = translate_wrap_mode(sampler->wrap_s);
cso->addressv = translate_wrap_mode(sampler->wrap_t);
cso->addressw = translate_wrap_mode(sampler->wrap_r);
cso->normalized_coords = sampler->normalized_coords;
cso->compare_mode = sampler->compare_mode;
cso->compare_func = sampler->compare_func;
{
uint32 r = float_to_ubyte(sampler->border_color.f[0]);
uint32 g = float_to_ubyte(sampler->border_color.f[1]);
uint32 b = float_to_ubyte(sampler->border_color.f[2]);
uint32 a = float_to_ubyte(sampler->border_color.f[3]);
cso->bordercolor = (a << 24) | (r << 16) | (g << 8) | b;
}
/* No SVGA3D support for:
* - min/max LOD clamping
*/
cso->min_lod = 0;
cso->view_min_lod = MAX2((int) (sampler->min_lod + 0.5), 0);
cso->view_max_lod = MAX2((int) (sampler->max_lod + 0.5), 0);
/* Use min_mipmap */
if (svga->debug.use_min_mipmap) {
if (cso->view_min_lod == cso->view_max_lod) {
cso->min_lod = cso->view_min_lod;
cso->view_min_lod = 0;
cso->view_max_lod = 1000; /* Just a high number */
cso->mipfilter = SVGA3D_TEX_FILTER_NONE;
}
}
SVGA_DBG(DEBUG_VIEWS, "min %u, view(min %u, max %u) lod, mipfilter %s\n",
cso->min_lod, cso->view_min_lod, cso->view_max_lod,
cso->mipfilter == SVGA3D_TEX_FILTER_NONE ? "SVGA3D_TEX_FILTER_NONE" : "SOMETHING");
return cso;
}
static void
svga_bind_sampler_states(struct pipe_context *pipe,
unsigned shader,
unsigned start,
unsigned num,
void **samplers)
{
struct svga_context *svga = svga_context(pipe);
unsigned i;
assert(shader
< PIPE_SHADER_TYPES
); assert(start
+ num
<= PIPE_MAX_SAMPLERS
);
/* we only support fragment shader samplers at this time */
if (shader != PIPE_SHADER_FRAGMENT)
return;
for (i = 0; i < num; i++)
svga->curr.sampler[start + i] = samplers[i];
/* find highest non-null sampler[] entry */
{
unsigned j = MAX2(svga->curr.num_samplers, start + num);
while (j > 0 && svga->curr.sampler[j - 1] == NULL)
j--;
svga->curr.num_samplers = j;
}
svga->dirty |= SVGA_NEW_SAMPLER;
}
static void svga_delete_sampler_state(struct pipe_context *pipe,
void *sampler)
{
FREE(sampler);
}
static struct pipe_sampler_view *
svga_create_sampler_view(struct pipe_context *pipe,
struct pipe_resource *texture,
const struct pipe_sampler_view *templ)
{
struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
if (view) {
*view = *templ;
view->reference.count = 1;
view->texture = NULL;
pipe_resource_reference(&view->texture, texture);
view->context = pipe;
}
return view;
}
static void
svga_sampler_view_destroy(struct pipe_context *pipe,
struct pipe_sampler_view *view)
{
pipe_resource_reference(&view->texture, NULL);
FREE(view);
}
static void
svga_set_sampler_views(struct pipe_context *pipe,
unsigned shader,
unsigned start,
unsigned num,
struct pipe_sampler_view **views)
{
struct svga_context *svga = svga_context(pipe);
unsigned flag_1d = 0;
unsigned flag_srgb = 0;
uint i;
assert(shader
< PIPE_SHADER_TYPES
); assert(start
+ num
<= Elements
(svga
->curr.
sampler_views));
/* we only support fragment shader sampler views at this time */
if (shader != PIPE_SHADER_FRAGMENT)
return;
for (i = 0; i < num; i++) {
if (svga->curr.sampler_views[start + i] != views[i]) {
/* Note: we're using pipe_sampler_view_release() here to work around
* a possible crash when the old view belongs to another context that
* was already destroyed.
*/
pipe_sampler_view_release(pipe, &svga->curr.sampler_views[start + i]);
pipe_sampler_view_reference(&svga->curr.sampler_views[start + i],
views[i]);
}
if (!views[i])
continue;
if (util_format_is_srgb(views[i]->format))
flag_srgb |= 1 << (start + i);
if (views[i]->texture->target == PIPE_TEXTURE_1D)
flag_1d |= 1 << (start + i);
}
/* find highest non-null sampler_views[] entry */
{
unsigned j = MAX2(svga->curr.num_sampler_views, start + num);
while (j > 0 && svga->curr.sampler_views[j - 1] == NULL)
j--;
svga->curr.num_sampler_views = j;
}
svga->dirty |= SVGA_NEW_TEXTURE_BINDING;
if (flag_srgb != svga->curr.tex_flags.flag_srgb ||
flag_1d != svga->curr.tex_flags.flag_1d)
{
svga->dirty |= SVGA_NEW_TEXTURE_FLAGS;
svga->curr.tex_flags.flag_1d = flag_1d;
svga->curr.tex_flags.flag_srgb = flag_srgb;
}
}
void svga_init_sampler_functions( struct svga_context *svga )
{
svga->pipe.create_sampler_state = svga_create_sampler_state;
svga->pipe.bind_sampler_states = svga_bind_sampler_states;
svga->pipe.delete_sampler_state = svga_delete_sampler_state;
svga->pipe.set_sampler_views = svga_set_sampler_views;
svga->pipe.create_sampler_view = svga_create_sampler_view;
svga->pipe.sampler_view_destroy = svga_sampler_view_destroy;
}