*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
- * Copyright 2008 VMware, Inc. All rights reserved.
+ * Copyright 2008-2010 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
compute_lambda_1d(const struct sp_sampler_varient *samp,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
- const float p[QUAD_SIZE],
- float lodbias)
+ const float p[QUAD_SIZE])
{
const struct pipe_texture *texture = samp->texture;
const struct pipe_sampler_state *sampler = samp->sampler;
float dsdx = fabsf(s[QUAD_BOTTOM_RIGHT] - s[QUAD_BOTTOM_LEFT]);
float dsdy = fabsf(s[QUAD_TOP_LEFT] - s[QUAD_BOTTOM_LEFT]);
- float rho = MAX2(dsdx, dsdy) * texture->width[0];
- float lambda;
-
- lambda = util_fast_log2(rho);
- lambda += lodbias + sampler->lod_bias;
- lambda = CLAMP(lambda, sampler->min_lod, sampler->max_lod);
+ float rho = MAX2(dsdx, dsdy) * texture->width0;
- return lambda;
+ return util_fast_log2(rho);
}
compute_lambda_2d(const struct sp_sampler_varient *samp,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
- const float p[QUAD_SIZE],
- float lodbias)
+ const float p[QUAD_SIZE])
{
const struct pipe_texture *texture = samp->texture;
const struct pipe_sampler_state *sampler = samp->sampler;
float dsdy = fabsf(s[QUAD_TOP_LEFT] - s[QUAD_BOTTOM_LEFT]);
float dtdx = fabsf(t[QUAD_BOTTOM_RIGHT] - t[QUAD_BOTTOM_LEFT]);
float dtdy = fabsf(t[QUAD_TOP_LEFT] - t[QUAD_BOTTOM_LEFT]);
- float maxx = MAX2(dsdx, dsdy) * texture->width[0];
- float maxy = MAX2(dtdx, dtdy) * texture->height[0];
+ float maxx = MAX2(dsdx, dsdy) * texture->width0;
+ float maxy = MAX2(dtdx, dtdy) * texture->height0;
float rho = MAX2(maxx, maxy);
- float lambda;
- lambda = util_fast_log2(rho);
- lambda += lodbias + sampler->lod_bias;
- lambda = CLAMP(lambda, sampler->min_lod, sampler->max_lod);
-
- return lambda;
+ return util_fast_log2(rho);
}
compute_lambda_3d(const struct sp_sampler_varient *samp,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
- const float p[QUAD_SIZE],
- float lodbias)
+ const float p[QUAD_SIZE])
{
const struct pipe_texture *texture = samp->texture;
const struct pipe_sampler_state *sampler = samp->sampler;
float dtdy = fabsf(t[QUAD_TOP_LEFT] - t[QUAD_BOTTOM_LEFT]);
float dpdx = fabsf(p[QUAD_BOTTOM_RIGHT] - p[QUAD_BOTTOM_LEFT]);
float dpdy = fabsf(p[QUAD_TOP_LEFT] - p[QUAD_BOTTOM_LEFT]);
- float maxx = MAX2(dsdx, dsdy) * texture->width[0];
- float maxy = MAX2(dtdx, dtdy) * texture->height[0];
- float maxz = MAX2(dpdx, dpdy) * texture->depth[0];
- float rho, lambda;
+ float maxx = MAX2(dsdx, dsdy) * texture->width0;
+ float maxy = MAX2(dtdx, dtdy) * texture->height0;
+ float maxz = MAX2(dpdx, dpdy) * texture->depth0;
+ float rho;
rho = MAX2(maxx, maxy);
rho = MAX2(rho, maxz);
- lambda = util_fast_log2(rho);
- lambda += lodbias + sampler->lod_bias;
- lambda = CLAMP(lambda, sampler->min_lod, sampler->max_lod);
-
- return lambda;
+ return util_fast_log2(rho);
}
/**
* Compute lambda for a vertex texture sampler.
- * Since there aren't derivatives to use, just return the LOD bias.
+ * Since there aren't derivatives to use, just return 0.
*/
static float
compute_lambda_vert(const struct sp_sampler_varient *samp,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
- const float p[QUAD_SIZE],
- float lodbias)
+ const float p[QUAD_SIZE])
{
- return lodbias;
+ return 0.0f;
}
const struct pipe_texture *texture = samp->texture;
unsigned level = addr.bits.level;
- if (x < 0 || x >= (int) texture->width[level] ||
- y < 0 || y >= (int) texture->height[level]) {
+ if (x < 0 || x >= (int) u_minify(texture->width0, level) ||
+ y < 0 || y >= (int) u_minify(texture->height0, level)) {
return samp->sampler->border_color;
}
else {
const struct pipe_texture *texture = samp->texture;
unsigned level = addr.bits.level;
- if (x < 0 || x >= (int) texture->width[level] ||
- y < 0 || y >= (int) texture->height[level] ||
- z < 0 || z >= (int) texture->depth[level]) {
+ if (x < 0 || x >= (int) u_minify(texture->width0, level) ||
+ y < 0 || y >= (int) u_minify(texture->height0, level) ||
+ z < 0 || z >= (int) u_minify(texture->depth0, level)) {
return samp->sampler->border_color;
}
else {
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
const struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
const struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
const struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
const struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
union tex_tile_address addr;
level0 = samp->level;
- width = texture->width[level0];
+ width = u_minify(texture->width0, level0);
assert(width > 0);
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
const struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
level0 = samp->level;
- width = texture->width[level0];
- height = texture->height[level0];
+ width = u_minify(texture->width0, level0);
+ height = u_minify(texture->height0, level0);
assert(width > 0);
assert(height > 0);
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
const struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
union tex_tile_address addr;
level0 = samp->level;
- width = texture->width[level0];
- height = texture->height[level0];
+ width = u_minify(texture->width0, level0);
+ height = u_minify(texture->height0, level0);
assert(width > 0);
assert(height > 0);
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
const struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
union tex_tile_address addr;
level0 = samp->level;
- width = texture->width[level0];
- height = texture->height[level0];
- depth = texture->depth[level0];
+ width = u_minify(texture->width0, level0);
+ height = u_minify(texture->height0, level0);
+ depth = u_minify(texture->depth0, level0);
assert(width > 0);
assert(height > 0);
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
const struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
union tex_tile_address addr;
level0 = samp->level;
- width = texture->width[level0];
+ width = u_minify(texture->width0, level0);
assert(width > 0);
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
const struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
union tex_tile_address addr;
level0 = samp->level;
- width = texture->width[level0];
- height = texture->height[level0];
+ width = u_minify(texture->width0, level0);
+ height = u_minify(texture->height0, level0);
assert(width > 0);
assert(height > 0);
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
const struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
union tex_tile_address addr;
level0 = samp->level;
- width = texture->width[level0];
- height = texture->height[level0];
+ width = u_minify(texture->width0, level0);
+ height = u_minify(texture->height0, level0);
assert(width > 0);
assert(height > 0);
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
const struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
union tex_tile_address addr;
level0 = samp->level;
- width = texture->width[level0];
- height = texture->height[level0];
- depth = texture->depth[level0];
+ width = u_minify(texture->width0, level0);
+ height = u_minify(texture->height0, level0);
+ depth = u_minify(texture->depth0, level0);
addr.value = 0;
addr.bits.level = level0;
}
+/* Calculate level of detail for every fragment.
+ * Note that lambda has already been biased by global LOD bias.
+ */
+static INLINE void
+compute_lod(const struct pipe_sampler_state *sampler,
+ const float biased_lambda,
+ const float lodbias[QUAD_SIZE],
+ float lod[QUAD_SIZE])
+{
+ uint i;
+
+ for (i = 0; i < QUAD_SIZE; i++) {
+ lod[i] = biased_lambda + lodbias[i];
+ lod[i] = CLAMP(lod[i], sampler->min_lod, sampler->max_lod);
+ }
+}
+
+
static void
mip_filter_linear(struct tgsi_sampler *tgsi_sampler,
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
const struct pipe_texture *texture = samp->texture;
int level0;
float lambda;
+ float lod[QUAD_SIZE];
+
+ if (control == tgsi_sampler_lod_bias) {
+ lambda = samp->compute_lambda(samp, s, t, p) + samp->sampler->lod_bias;
+ compute_lod(samp->sampler, lambda, c0, lod);
+ } else {
+ assert(control == tgsi_sampler_lod_explicit);
- lambda = samp->compute_lambda(samp, s, t, p, lodbias);
+ memcpy(lod, c0, sizeof(lod));
+ }
+
+ /* XXX: Take into account all lod values.
+ */
+ lambda = lod[0];
level0 = (int)lambda;
if (lambda < 0.0) {
samp->level = 0;
- samp->mag_img_filter( tgsi_sampler, s, t, p, 0, rgba );
+ samp->mag_img_filter(tgsi_sampler, s, t, p, NULL, tgsi_sampler_lod_bias, rgba);
}
else if (level0 >= texture->last_level) {
samp->level = texture->last_level;
- samp->min_img_filter( tgsi_sampler, s, t, p, 0, rgba );
+ samp->min_img_filter(tgsi_sampler, s, t, p, NULL, tgsi_sampler_lod_bias, rgba);
}
else {
float levelBlend = lambda - level0;
int c,j;
samp->level = level0;
- samp->min_img_filter( tgsi_sampler, s, t, p, 0, rgba0 );
+ samp->min_img_filter(tgsi_sampler, s, t, p, NULL, tgsi_sampler_lod_bias, rgba0);
samp->level = level0+1;
- samp->min_img_filter( tgsi_sampler, s, t, p, 0, rgba1 );
+ samp->min_img_filter(tgsi_sampler, s, t, p, NULL, tgsi_sampler_lod_bias, rgba1);
for (j = 0; j < QUAD_SIZE; j++) {
for (c = 0; c < 4; c++) {
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
const struct pipe_texture *texture = samp->texture;
float lambda;
+ float lod[QUAD_SIZE];
- lambda = samp->compute_lambda(samp, s, t, p, lodbias);
+ if (control == tgsi_sampler_lod_bias) {
+ lambda = samp->compute_lambda(samp, s, t, p) + samp->sampler->lod_bias;
+ compute_lod(samp->sampler, lambda, c0, lod);
+ } else {
+ assert(control == tgsi_sampler_lod_explicit);
+
+ memcpy(lod, c0, sizeof(lod));
+ }
+
+ /* XXX: Take into account all lod values.
+ */
+ lambda = lod[0];
if (lambda < 0.0) {
samp->level = 0;
- samp->mag_img_filter( tgsi_sampler, s, t, p, 0, rgba );
+ samp->mag_img_filter(tgsi_sampler, s, t, p, NULL, tgsi_sampler_lod_bias, rgba);
}
else {
samp->level = (int)(lambda + 0.5) ;
samp->level = MIN2(samp->level, (int)texture->last_level);
- samp->min_img_filter( tgsi_sampler, s, t, p, 0, rgba );
+ samp->min_img_filter(tgsi_sampler, s, t, p, NULL, tgsi_sampler_lod_bias, rgba);
}
#if 0
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
- float lambda = samp->compute_lambda(samp, s, t, p, lodbias);
+ float lambda;
+ float lod[QUAD_SIZE];
+
+ if (control == tgsi_sampler_lod_bias) {
+ lambda = samp->compute_lambda(samp, s, t, p) + samp->sampler->lod_bias;
+ compute_lod(samp->sampler, lambda, c0, lod);
+ } else {
+ assert(control == tgsi_sampler_lod_explicit);
+
+ memcpy(lod, c0, sizeof(lod));
+ }
+
+ /* XXX: Take into account all lod values.
+ */
+ lambda = lod[0];
if (lambda < 0.0) {
- samp->mag_img_filter( tgsi_sampler, s, t, p, 0, rgba );
+ samp->mag_img_filter(tgsi_sampler, s, t, p, NULL, tgsi_sampler_lod_bias, rgba);
}
else {
- samp->min_img_filter( tgsi_sampler, s, t, p, 0, rgba );
+ samp->min_img_filter(tgsi_sampler, s, t, p, NULL, tgsi_sampler_lod_bias, rgba);
}
}
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
const struct pipe_texture *texture = samp->texture;
int level0;
float lambda;
+ float lod[QUAD_SIZE];
- lambda = compute_lambda_2d(samp, s, t, p, lodbias);
+ if (control == tgsi_sampler_lod_bias) {
+ lambda = samp->compute_lambda(samp, s, t, p) + samp->sampler->lod_bias;
+ compute_lod(samp->sampler, lambda, c0, lod);
+ } else {
+ assert(control == tgsi_sampler_lod_explicit);
+
+ memcpy(lod, c0, sizeof(lod));
+ }
+
+ /* XXX: Take into account all lod values.
+ */
+ lambda = lod[0];
level0 = (int)lambda;
/* Catches both negative and large values of level0:
else
samp->level = texture->last_level;
- img_filter_2d_linear_repeat_POT( tgsi_sampler, s, t, p, 0, rgba );
+ img_filter_2d_linear_repeat_POT(tgsi_sampler, s, t, p, NULL, tgsi_sampler_lod_bias, rgba);
}
else {
float levelBlend = lambda - level0;
int c,j;
samp->level = level0;
- img_filter_2d_linear_repeat_POT( tgsi_sampler, s, t, p, 0, rgba0 );
+ img_filter_2d_linear_repeat_POT(tgsi_sampler, s, t, p, NULL, tgsi_sampler_lod_bias, rgba0);
samp->level = level0+1;
- img_filter_2d_linear_repeat_POT( tgsi_sampler, s, t, p, 0, rgba1 );
+ img_filter_2d_linear_repeat_POT(tgsi_sampler, s, t, p, NULL, tgsi_sampler_lod_bias, rgba1);
for (j = 0; j < QUAD_SIZE; j++) {
for (c = 0; c < 4; c++) {
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
int j, k0, k1, k2, k3;
float val;
- samp->mip_filter( tgsi_sampler, s, t, p, lodbias, rgba );
+ samp->mip_filter(tgsi_sampler, s, t, p, c0, control, rgba);
/**
* Compare texcoord 'p' (aka R) against texture value 'rgba[0]'
const float s[QUAD_SIZE],
const float t[QUAD_SIZE],
const float p[QUAD_SIZE],
- float lodbias,
+ const float c0[QUAD_SIZE],
+ enum tgsi_sampler_control control,
float rgba[NUM_CHANNELS][QUAD_SIZE])
{
struct sp_sampler_varient *samp = sp_sampler_varient(tgsi_sampler);
* is not active, this will point somewhere deeper into the
* pipeline, eg. to mip_filter or even img_filter.
*/
- samp->compare(tgsi_sampler, ssss, tttt, NULL, lodbias, rgba);
+ samp->compare(tgsi_sampler, ssss, tttt, NULL, c0, control, rgba);
}
samp->texture = texture;
samp->cache = tex_cache;
- samp->xpot = util_unsigned_logbase2( texture->width[0] );
- samp->ypot = util_unsigned_logbase2( texture->height[0] );
+ samp->xpot = util_unsigned_logbase2( texture->width0 );
+ samp->ypot = util_unsigned_logbase2( texture->height0 );
samp->level = CLAMP((int) sampler->min_lod, 0, (int) texture->last_level);
}
break;
}
- if (sampler->compare_mode != FALSE) {
+ if (sampler->compare_mode != PIPE_TEX_COMPARE_NONE) {
samp->compare = sample_compare;
}
else {
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