src/gallium/drivers/freedreno/a3xx/fd3_texture.c - third_party/mesa - Git at Google

 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */

 /*
  * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
  *
  * 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 (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 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.
  *
  * Authors:
  *    Rob Clark <robclark@freedesktop.org>
  */

 #include "pipe/p_state.h"
 #include "util/u_string.h"
 #include "util/u_memory.h"
 #include "util/u_inlines.h"
 #include "util/u_format.h"

 #include "fd3_texture.h"
 #include "fd3_format.h"

 static enum a3xx_tex_clamp
 tex_clamp(unsigned wrap, bool clamp_to_edge, bool *needs_border)
 {
 	/* Hardware does not support _CLAMP, but we emulate it: */
 	if (wrap == PIPE_TEX_WRAP_CLAMP) {
 		wrap = (clamp_to_edge) ?
 			PIPE_TEX_WRAP_CLAMP_TO_EDGE : PIPE_TEX_WRAP_CLAMP_TO_BORDER;
 	}

 	switch (wrap) {
 	case PIPE_TEX_WRAP_REPEAT:
 		return A3XX_TEX_REPEAT;
 	case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
 		return A3XX_TEX_CLAMP_TO_EDGE;
 	case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
 		*needs_border = true;
 		return A3XX_TEX_CLAMP_TO_BORDER;
 	case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
 		/* only works for PoT.. need to emulate otherwise! */
 		return A3XX_TEX_MIRROR_CLAMP;
 	case PIPE_TEX_WRAP_MIRROR_REPEAT:
 		return A3XX_TEX_MIRROR_REPEAT;
 	case PIPE_TEX_WRAP_MIRROR_CLAMP:
 	case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
 		/* these two we could perhaps emulate, but we currently
 		 * just don't advertise PIPE_CAP_TEXTURE_MIRROR_CLAMP
 		 */
 	default:
 		DBG("invalid wrap: %u", wrap);
 		return 0;
 	}
 }

 static enum a3xx_tex_filter
 tex_filter(unsigned filter, bool aniso)
 {
 	switch (filter) {
 	case PIPE_TEX_FILTER_NEAREST:
 		return A3XX_TEX_NEAREST;
 	case PIPE_TEX_FILTER_LINEAR:
 		return aniso ? A3XX_TEX_ANISO : A3XX_TEX_LINEAR;
 	default:
 		DBG("invalid filter: %u", filter);
 		return 0;
 	}
 }

 static void *
 fd3_sampler_state_create(struct pipe_context *pctx,
 		const struct pipe_sampler_state *cso)
 {
 	struct fd3_sampler_stateobj *so = CALLOC_STRUCT(fd3_sampler_stateobj);
 	unsigned aniso = util_last_bit(MIN2(cso->max_anisotropy >> 1, 8));
 	bool miplinear = false;
 	bool clamp_to_edge;

 	if (!so)
 		return NULL;

 	if (cso->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
 		miplinear = true;

 	so->base = *cso;

 	/*
 	 * For nearest filtering, _CLAMP means _CLAMP_TO_EDGE;  for linear
 	 * filtering, _CLAMP means _CLAMP_TO_BORDER while additionally
 	 * clamping the texture coordinates to [0.0, 1.0].
 	 *
 	 * The clamping will be taken care of in the shaders.  There are two
 	 * filters here, but let the minification one has a say.
 	 */
 	clamp_to_edge = (cso->min_img_filter == PIPE_TEX_FILTER_NEAREST);
 	if (!clamp_to_edge) {
 		so->saturate_s = (cso->wrap_s == PIPE_TEX_WRAP_CLAMP);
 		so->saturate_t = (cso->wrap_t == PIPE_TEX_WRAP_CLAMP);
 		so->saturate_r = (cso->wrap_r == PIPE_TEX_WRAP_CLAMP);
 	}

 	so->needs_border = false;
 	so->texsamp0 =
 			COND(!cso->normalized_coords, A3XX_TEX_SAMP_0_UNNORM_COORDS) |
 			COND(!cso->seamless_cube_map, A3XX_TEX_SAMP_0_CUBEMAPSEAMLESSFILTOFF) |
 			COND(miplinear, A3XX_TEX_SAMP_0_MIPFILTER_LINEAR) |
 			A3XX_TEX_SAMP_0_XY_MAG(tex_filter(cso->mag_img_filter, aniso)) |
 			A3XX_TEX_SAMP_0_XY_MIN(tex_filter(cso->min_img_filter, aniso)) |
 			A3XX_TEX_SAMP_0_ANISO(aniso) |
 			A3XX_TEX_SAMP_0_WRAP_S(tex_clamp(cso->wrap_s, clamp_to_edge, &so->needs_border)) |
 			A3XX_TEX_SAMP_0_WRAP_T(tex_clamp(cso->wrap_t, clamp_to_edge, &so->needs_border)) |
 			A3XX_TEX_SAMP_0_WRAP_R(tex_clamp(cso->wrap_r, clamp_to_edge, &so->needs_border));

 	if (cso->compare_mode)
 		so->texsamp0 |= A3XX_TEX_SAMP_0_COMPARE_FUNC(cso->compare_func); /* maps 1:1 */

 	if (cso->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
 		so->texsamp1 =
 				A3XX_TEX_SAMP_1_LOD_BIAS(cso->lod_bias) |
 				A3XX_TEX_SAMP_1_MIN_LOD(cso->min_lod) |
 				A3XX_TEX_SAMP_1_MAX_LOD(cso->max_lod);
 	} else {
 		so->texsamp1 = 0x00000000;
 	}

 	return so;
 }

 static void
 fd3_sampler_states_bind(struct pipe_context *pctx,
 		enum pipe_shader_type shader, unsigned start,
 		unsigned nr, void **hwcso)
 {
 	struct fd_context *ctx = fd_context(pctx);
 	struct fd3_context *fd3_ctx = fd3_context(ctx);
 	uint16_t saturate_s = 0, saturate_t = 0, saturate_r = 0;
 	unsigned i;

 	if (!hwcso)
 		nr = 0;

 	for (i = 0; i < nr; i++) {
 		if (hwcso[i]) {
 			struct fd3_sampler_stateobj *sampler =
 					fd3_sampler_stateobj(hwcso[i]);
 			if (sampler->saturate_s)
 				saturate_s |= (1 << i);
 			if (sampler->saturate_t)
 				saturate_t |= (1 << i);
 			if (sampler->saturate_r)
 				saturate_r |= (1 << i);
 		}
 	}

 	fd_sampler_states_bind(pctx, shader, start, nr, hwcso);

 	if (shader == PIPE_SHADER_FRAGMENT) {
 		fd3_ctx->fsaturate =
 			(saturate_s != 0) ||
 			(saturate_t != 0) ||
 			(saturate_r != 0);
 		fd3_ctx->fsaturate_s = saturate_s;
 		fd3_ctx->fsaturate_t = saturate_t;
 		fd3_ctx->fsaturate_r = saturate_r;
 	} else if (shader == PIPE_SHADER_VERTEX) {
 		fd3_ctx->vsaturate =
 			(saturate_s != 0) ||
 			(saturate_t != 0) ||
 			(saturate_r != 0);
 		fd3_ctx->vsaturate_s = saturate_s;
 		fd3_ctx->vsaturate_t = saturate_t;
 		fd3_ctx->vsaturate_r = saturate_r;
 	}
 }

 static enum a3xx_tex_type
 tex_type(unsigned target)
 {
 	switch (target) {
 	default:
 		assert(0);
 	case PIPE_BUFFER:
 	case PIPE_TEXTURE_1D:
 	case PIPE_TEXTURE_1D_ARRAY:
 		return A3XX_TEX_1D;
 	case PIPE_TEXTURE_RECT:
 	case PIPE_TEXTURE_2D:
 	case PIPE_TEXTURE_2D_ARRAY:
 		return A3XX_TEX_2D;
 	case PIPE_TEXTURE_3D:
 		return A3XX_TEX_3D;
 	case PIPE_TEXTURE_CUBE:
 	case PIPE_TEXTURE_CUBE_ARRAY:
 		return A3XX_TEX_CUBE;
 	}
 }

 static struct pipe_sampler_view *
 fd3_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
 		const struct pipe_sampler_view *cso)
 {
 	struct fd3_pipe_sampler_view *so = CALLOC_STRUCT(fd3_pipe_sampler_view);
 	struct fd_resource *rsc = fd_resource(prsc);
 	unsigned lvl;
 	uint32_t sz2 = 0;

 	if (!so)
 		return NULL;

 	so->base = *cso;
 	pipe_reference(NULL, &prsc->reference);
 	so->base.texture = prsc;
 	so->base.reference.count = 1;
 	so->base.context = pctx;

 	so->texconst0 =
 			A3XX_TEX_CONST_0_TYPE(tex_type(prsc->target)) |
 			A3XX_TEX_CONST_0_FMT(fd3_pipe2tex(cso->format)) |
 			fd3_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
 						cso->swizzle_b, cso->swizzle_a);

 	if (prsc->target == PIPE_BUFFER || util_format_is_pure_integer(cso->format))
 		so->texconst0 |= A3XX_TEX_CONST_0_NOCONVERT;
 	if (util_format_is_srgb(cso->format))
 		so->texconst0 |= A3XX_TEX_CONST_0_SRGB;

 	if (prsc->target == PIPE_BUFFER) {
 		lvl = 0;
 		so->texconst1 =
 			A3XX_TEX_CONST_1_FETCHSIZE(fd3_pipe2fetchsize(cso->format)) |
 			A3XX_TEX_CONST_1_WIDTH(cso->u.buf.size / util_format_get_blocksize(cso->format)) |
 			A3XX_TEX_CONST_1_HEIGHT(1);
 	} else {
 		unsigned miplevels;

 		lvl = fd_sampler_first_level(cso);
 		miplevels = fd_sampler_last_level(cso) - lvl;

 		so->texconst0 |= A3XX_TEX_CONST_0_MIPLVLS(miplevels);
 		so->texconst1 =
 			A3XX_TEX_CONST_1_FETCHSIZE(fd3_pipe2fetchsize(cso->format)) |
 			A3XX_TEX_CONST_1_WIDTH(u_minify(prsc->width0, lvl)) |
 			A3XX_TEX_CONST_1_HEIGHT(u_minify(prsc->height0, lvl));
 	}
 	/* when emitted, A3XX_TEX_CONST_2_INDX() must be OR'd in: */
 	so->texconst2 =
 			A3XX_TEX_CONST_2_PITCH(fd3_pipe2nblocksx(cso->format, rsc->slices[lvl].pitch) * rsc->cpp);
 	switch (prsc->target) {
 	case PIPE_TEXTURE_1D_ARRAY:
 	case PIPE_TEXTURE_2D_ARRAY:
 		so->texconst3 =
 				A3XX_TEX_CONST_3_DEPTH(prsc->array_size - 1) |
 				A3XX_TEX_CONST_3_LAYERSZ1(rsc->slices[0].size0);
 		break;
 	case PIPE_TEXTURE_3D:
 		so->texconst3 =
 				A3XX_TEX_CONST_3_DEPTH(u_minify(prsc->depth0, lvl)) |
 				A3XX_TEX_CONST_3_LAYERSZ1(rsc->slices[lvl].size0);
 		while (lvl < cso->u.tex.last_level && sz2 != rsc->slices[lvl+1].size0)
 			sz2 = rsc->slices[++lvl].size0;
 		so->texconst3 |= A3XX_TEX_CONST_3_LAYERSZ2(sz2);
 		break;
 	default:
 		so->texconst3 = 0x00000000;
 		break;
 	}

 	return &so->base;
 }

 void
 fd3_texture_init(struct pipe_context *pctx)
 {
 	pctx->create_sampler_state = fd3_sampler_state_create;
 	pctx->bind_sampler_states = fd3_sampler_states_bind;
 	pctx->create_sampler_view = fd3_sampler_view_create;
 	pctx->set_sampler_views = fd_set_sampler_views;
 }
	/* -- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -- */

	/*
	* Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
	*
	* 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 (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 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.
	*
	* Authors:
	* Rob Clark <robclark@freedesktop.org>
	*/

	#include "pipe/p_state.h"
	#include "util/u_string.h"
	#include "util/u_memory.h"
	#include "util/u_inlines.h"
	#include "util/u_format.h"

	#include "fd3_texture.h"
	#include "fd3_format.h"

	static enum a3xx_tex_clamp
	tex_clamp(unsigned wrap, bool clamp_to_edge, bool *needs_border)
	{
	/* Hardware does not support _CLAMP, but we emulate it: */
	if (wrap == PIPE_TEX_WRAP_CLAMP) {
	wrap = (clamp_to_edge) ?
	PIPE_TEX_WRAP_CLAMP_TO_EDGE : PIPE_TEX_WRAP_CLAMP_TO_BORDER;
	}

	switch (wrap) {
	case PIPE_TEX_WRAP_REPEAT:
	return A3XX_TEX_REPEAT;
	case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
	return A3XX_TEX_CLAMP_TO_EDGE;
	case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
	*needs_border = true;
	return A3XX_TEX_CLAMP_TO_BORDER;
	case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
	/* only works for PoT.. need to emulate otherwise! */
	return A3XX_TEX_MIRROR_CLAMP;
	case PIPE_TEX_WRAP_MIRROR_REPEAT:
	return A3XX_TEX_MIRROR_REPEAT;
	case PIPE_TEX_WRAP_MIRROR_CLAMP:
	case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
	/* these two we could perhaps emulate, but we currently
	* just don't advertise PIPE_CAP_TEXTURE_MIRROR_CLAMP
	*/
	default:
	DBG("invalid wrap: %u", wrap);
	return 0;
	}
	}

	static enum a3xx_tex_filter
	tex_filter(unsigned filter, bool aniso)
	{
	switch (filter) {
	case PIPE_TEX_FILTER_NEAREST:
	return A3XX_TEX_NEAREST;
	case PIPE_TEX_FILTER_LINEAR:
	return aniso ? A3XX_TEX_ANISO : A3XX_TEX_LINEAR;
	default:
	DBG("invalid filter: %u", filter);
	return 0;
	}
	}

	static void *
	fd3_sampler_state_create(struct pipe_context *pctx,
	const struct pipe_sampler_state *cso)
	{
	struct fd3_sampler_stateobj *so = CALLOC_STRUCT(fd3_sampler_stateobj);
	unsigned aniso = util_last_bit(MIN2(cso->max_anisotropy >> 1, 8));
	bool miplinear = false;
	bool clamp_to_edge;

	if (!so)
	return NULL;

	if (cso->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
	miplinear = true;

	so->base = *cso;

	/*
	* For nearest filtering, _CLAMP means _CLAMP_TO_EDGE; for linear
	* filtering, _CLAMP means _CLAMP_TO_BORDER while additionally
	* clamping the texture coordinates to [0.0, 1.0].
	*
	* The clamping will be taken care of in the shaders. There are two
	* filters here, but let the minification one has a say.
	*/
	clamp_to_edge = (cso->min_img_filter == PIPE_TEX_FILTER_NEAREST);
	if (!clamp_to_edge) {
	so->saturate_s = (cso->wrap_s == PIPE_TEX_WRAP_CLAMP);
	so->saturate_t = (cso->wrap_t == PIPE_TEX_WRAP_CLAMP);
	so->saturate_r = (cso->wrap_r == PIPE_TEX_WRAP_CLAMP);
	}

	so->needs_border = false;
	so->texsamp0 =
	COND(!cso->normalized_coords, A3XX_TEX_SAMP_0_UNNORM_COORDS) \|
	COND(!cso->seamless_cube_map, A3XX_TEX_SAMP_0_CUBEMAPSEAMLESSFILTOFF) \|
	COND(miplinear, A3XX_TEX_SAMP_0_MIPFILTER_LINEAR) \|
	A3XX_TEX_SAMP_0_XY_MAG(tex_filter(cso->mag_img_filter, aniso)) \|
	A3XX_TEX_SAMP_0_XY_MIN(tex_filter(cso->min_img_filter, aniso)) \|
	A3XX_TEX_SAMP_0_ANISO(aniso) \|
	A3XX_TEX_SAMP_0_WRAP_S(tex_clamp(cso->wrap_s, clamp_to_edge, &so->needs_border)) \|
	A3XX_TEX_SAMP_0_WRAP_T(tex_clamp(cso->wrap_t, clamp_to_edge, &so->needs_border)) \|
	A3XX_TEX_SAMP_0_WRAP_R(tex_clamp(cso->wrap_r, clamp_to_edge, &so->needs_border));

	if (cso->compare_mode)
	so->texsamp0 \|= A3XX_TEX_SAMP_0_COMPARE_FUNC(cso->compare_func); /* maps 1:1 */

	if (cso->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
	so->texsamp1 =
	A3XX_TEX_SAMP_1_LOD_BIAS(cso->lod_bias) \|
	A3XX_TEX_SAMP_1_MIN_LOD(cso->min_lod) \|
	A3XX_TEX_SAMP_1_MAX_LOD(cso->max_lod);
	} else {
	so->texsamp1 = 0x00000000;
	}

	return so;
	}

	static void
	fd3_sampler_states_bind(struct pipe_context *pctx,
	enum pipe_shader_type shader, unsigned start,
	unsigned nr, void **hwcso)
	{
	struct fd_context *ctx = fd_context(pctx);
	struct fd3_context *fd3_ctx = fd3_context(ctx);
	uint16_t saturate_s = 0, saturate_t = 0, saturate_r = 0;
	unsigned i;

	if (!hwcso)
	nr = 0;

	for (i = 0; i < nr; i++) {
	if (hwcso[i]) {
	struct fd3_sampler_stateobj *sampler =
	fd3_sampler_stateobj(hwcso[i]);
	if (sampler->saturate_s)
	saturate_s \|= (1 << i);
	if (sampler->saturate_t)
	saturate_t \|= (1 << i);
	if (sampler->saturate_r)
	saturate_r \|= (1 << i);
	}
	}

	fd_sampler_states_bind(pctx, shader, start, nr, hwcso);

	if (shader == PIPE_SHADER_FRAGMENT) {
	fd3_ctx->fsaturate =
	(saturate_s != 0) \|\|
	(saturate_t != 0) \|\|
	(saturate_r != 0);
	fd3_ctx->fsaturate_s = saturate_s;
	fd3_ctx->fsaturate_t = saturate_t;
	fd3_ctx->fsaturate_r = saturate_r;
	} else if (shader == PIPE_SHADER_VERTEX) {
	fd3_ctx->vsaturate =
	(saturate_s != 0) \|\|
	(saturate_t != 0) \|\|
	(saturate_r != 0);
	fd3_ctx->vsaturate_s = saturate_s;
	fd3_ctx->vsaturate_t = saturate_t;
	fd3_ctx->vsaturate_r = saturate_r;
	}
	}

	static enum a3xx_tex_type
	tex_type(unsigned target)
	{
	switch (target) {
	default:
	assert(0);
	case PIPE_BUFFER:
	case PIPE_TEXTURE_1D:
	case PIPE_TEXTURE_1D_ARRAY:
	return A3XX_TEX_1D;
	case PIPE_TEXTURE_RECT:
	case PIPE_TEXTURE_2D:
	case PIPE_TEXTURE_2D_ARRAY:
	return A3XX_TEX_2D;
	case PIPE_TEXTURE_3D:
	return A3XX_TEX_3D;
	case PIPE_TEXTURE_CUBE:
	case PIPE_TEXTURE_CUBE_ARRAY:
	return A3XX_TEX_CUBE;
	}
	}

	static struct pipe_sampler_view *
	fd3_sampler_view_create(struct pipe_context pctx, struct pipe_resource prsc,
	const struct pipe_sampler_view *cso)
	{
	struct fd3_pipe_sampler_view *so = CALLOC_STRUCT(fd3_pipe_sampler_view);
	struct fd_resource *rsc = fd_resource(prsc);
	unsigned lvl;
	uint32_t sz2 = 0;

	if (!so)
	return NULL;

	so->base = *cso;
	pipe_reference(NULL, &prsc->reference);
	so->base.texture = prsc;
	so->base.reference.count = 1;
	so->base.context = pctx;

	so->texconst0 =
	A3XX_TEX_CONST_0_TYPE(tex_type(prsc->target)) \|
	A3XX_TEX_CONST_0_FMT(fd3_pipe2tex(cso->format)) \|
	fd3_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
	cso->swizzle_b, cso->swizzle_a);

	if (prsc->target == PIPE_BUFFER \|\| util_format_is_pure_integer(cso->format))
	so->texconst0 \|= A3XX_TEX_CONST_0_NOCONVERT;
	if (util_format_is_srgb(cso->format))
	so->texconst0 \|= A3XX_TEX_CONST_0_SRGB;

	if (prsc->target == PIPE_BUFFER) {
	lvl = 0;
	so->texconst1 =
	A3XX_TEX_CONST_1_FETCHSIZE(fd3_pipe2fetchsize(cso->format)) \|
	A3XX_TEX_CONST_1_WIDTH(cso->u.buf.size / util_format_get_blocksize(cso->format)) \|
	A3XX_TEX_CONST_1_HEIGHT(1);
	} else {
	unsigned miplevels;

	lvl = fd_sampler_first_level(cso);
	miplevels = fd_sampler_last_level(cso) - lvl;

	so->texconst0 \|= A3XX_TEX_CONST_0_MIPLVLS(miplevels);
	so->texconst1 =
	A3XX_TEX_CONST_1_FETCHSIZE(fd3_pipe2fetchsize(cso->format)) \|
	A3XX_TEX_CONST_1_WIDTH(u_minify(prsc->width0, lvl)) \|
	A3XX_TEX_CONST_1_HEIGHT(u_minify(prsc->height0, lvl));
	}
	/* when emitted, A3XX_TEX_CONST_2_INDX() must be OR'd in: */
	so->texconst2 =
	A3XX_TEX_CONST_2_PITCH(fd3_pipe2nblocksx(cso->format, rsc->slices[lvl].pitch) * rsc->cpp);
	switch (prsc->target) {
	case PIPE_TEXTURE_1D_ARRAY:
	case PIPE_TEXTURE_2D_ARRAY:
	so->texconst3 =
	A3XX_TEX_CONST_3_DEPTH(prsc->array_size - 1) \|
	A3XX_TEX_CONST_3_LAYERSZ1(rsc->slices[0].size0);
	break;
	case PIPE_TEXTURE_3D:
	so->texconst3 =
	A3XX_TEX_CONST_3_DEPTH(u_minify(prsc->depth0, lvl)) \|
	A3XX_TEX_CONST_3_LAYERSZ1(rsc->slices[lvl].size0);
	while (lvl < cso->u.tex.last_level && sz2 != rsc->slices[lvl+1].size0)
	sz2 = rsc->slices[++lvl].size0;
	so->texconst3 \|= A3XX_TEX_CONST_3_LAYERSZ2(sz2);
	break;
	default:
	so->texconst3 = 0x00000000;
	break;
	}

	return &so->base;
	}

	void
	fd3_texture_init(struct pipe_context *pctx)
	{
	pctx->create_sampler_state = fd3_sampler_state_create;
	pctx->bind_sampler_states = fd3_sampler_states_bind;
	pctx->create_sampler_view = fd3_sampler_view_create;
	pctx->set_sampler_views = fd_set_sampler_views;
	}