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/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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, 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 TUNGSTEN GRAPHICS AND/OR ITS 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.
*
**************************************************************************/
//#include "mtypes.h"
//#include "enums.h"
//#include "texformat.h"
//#include "macros.h"
//#include "dri_bufmgr.h"
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "i915_state_inlines.h"
#include "i915_context.h"
#include "i915_reg.h"
//#include "i915_cache.h"
/* The i915 (and related graphics cores) do not support GL_CLAMP. The
* Intel drivers for "other operating systems" implement GL_CLAMP as
* GL_CLAMP_TO_EDGE, so the same is done here.
*/
static unsigned
translate_wrap_mode(unsigned wrap)
{
switch (wrap) {
case PIPE_TEX_WRAP_REPEAT:
return TEXCOORDMODE_WRAP;
case PIPE_TEX_WRAP_CLAMP:
return TEXCOORDMODE_CLAMP_EDGE; /* not quite correct */
case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
return TEXCOORDMODE_CLAMP_EDGE;
case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
return TEXCOORDMODE_CLAMP_BORDER;
// case PIPE_TEX_WRAP_MIRRORED_REPEAT:
// return TEXCOORDMODE_MIRROR;
default:
return TEXCOORDMODE_WRAP;
}
}
static unsigned translate_img_filter( unsigned filter )
{
switch (filter) {
case PIPE_TEX_FILTER_NEAREST:
return FILTER_NEAREST;
case PIPE_TEX_FILTER_LINEAR:
return FILTER_LINEAR;
default:
assert(0);
return FILTER_NEAREST;
}
}
static unsigned translate_mip_filter( unsigned filter )
{
switch (filter) {
case PIPE_TEX_MIPFILTER_NONE:
return MIPFILTER_NONE;
case PIPE_TEX_MIPFILTER_NEAREST:
return MIPFILTER_NEAREST;
case PIPE_TEX_FILTER_LINEAR:
return MIPFILTER_LINEAR;
default:
assert(0);
return MIPFILTER_NONE;
}
}
/* Recalculate all state from scratch. Perhaps not the most
* efficient, but this has gotten complex enough that we need
* something which is understandable and reliable.
*/
static void update_sampler(struct i915_context *i915,
const struct pipe_sampler_state *sampler,
const struct pipe_surface_state *surface,
unsigned surface_index,
unsigned target,
unsigned *state )
{
/* Need to do this after updating the maps, which call the
* intel_finalize_mipmap_tree and hence can update firstLevel:
*/
unsigned minFilt, magFilt;
unsigned mipFilt;
state[0] = state[1] = state[2] = 0;
mipFilt = translate_mip_filter( sampler->min_mip_filter );
if (tObj->MaxAnisotropy > 1.0) {
minFilt = FILTER_ANISOTROPIC;
magFilt = FILTER_ANISOTROPIC;
}
else {
minFilt = translate_img_filter( sampler->min_img_filter );
magFilt = translate_img_filter( sampler->mag_img_filter );
}
{
int b = sampler->lod_bias * 16.0;
b = CLAMP(b, -256, 255);
state[0] |= ((b << SS2_LOD_BIAS_SHIFT) & SS2_LOD_BIAS_MASK);
}
if (surface->format == MESA_FORMAT_YCBCR ||
surface->format == MESA_FORMAT_YCBCR_REV)
state[0] |= SS2_COLORSPACE_CONVERSION;
/* Shadow:
*/
if (sampler->compare_mode == PIPE_TEX_COMPARE_R_TO_TEXTURE)
{
state[0] |= (SS2_SHADOW_ENABLE |
translate_compare_func(sampler->compare_func));
minFilt = FILTER_4X4_FLAT;
magFilt = FILTER_4X4_FLAT;
}
state[0] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
(mipFilt << SS2_MIP_FILTER_SHIFT) |
(magFilt << SS2_MAG_FILTER_SHIFT));
if (0)
{
unsigned ws = tObj->WrapS;
unsigned wt = tObj->WrapT;
unsigned wr = tObj->WrapR;
/* 3D textures don't seem to respect the border color.
* Fallback if there's ever a danger that they might refer to
* it.
*
* Effectively this means fallback on 3D clamp or
* clamp_to_border.
*
* XXX: Check if this is true on i945.
* XXX: Check if this bug got fixed in release silicon.
*/
if (target == PIPE_TEXTURE_3D &&
(sampler->min_img_filter != PIPE_TEX_FILTER_NEAREST ||
sampler->mag_img_filter != PIPE_TEX_FILTER_NEAREST) &&
(ws == GL_CLAMP ||
wt == GL_CLAMP ||
wr == GL_CLAMP ||
ws == GL_CLAMP_TO_BORDER ||
wt == GL_CLAMP_TO_BORDER ||
wr == GL_CLAMP_TO_BORDER)) {
if (intel->strict_conformance) {
assert(0);
/* sampler->fallback = true; */
/* TODO */
}
}
state[1] =
((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
(translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
(translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT) |
(unit << SS3_TEXTUREMAP_INDEX_SHIFT));
if (target != TEXTURE_RECT_BIT)
state[1] |= SS3_NORMALIZED_COORDS;
state[2] = INTEL_PACKCOLOR8888(tObj->_BorderChan[0],
tObj->_BorderChan[1],
tObj->_BorderChan[2],
tObj->_BorderChan[3]);
}
void i915_update_samplers( struct i915_context *i915 )
{
int i, dirty = 0, nr = 0;
for (i = 0; i < I915_TEX_UNITS; i++) {
if (i915->sampler[i].enabled) { /* ??? */
update_sampler( i915, i,
i915->current.sampler[i] );
nr++;
dirty |= (1<<i);
}
}
}
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