src/gallium/drivers/softpipe/sp_state_sampler.c - platform/external/mesa3d - Git at Google

 /**************************************************************************
  *
  * Copyright 2007 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, 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 VMWARE 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.
  *
  **************************************************************************/

 /* Authors:
  *  Brian Paul
  */

 #include "util/u_memory.h"
 #include "util/u_inlines.h"
 #include "util/format/u_format.h"

 #include "draw/draw_context.h"

 #include "sp_context.h"
 #include "sp_state.h"
 #include "sp_texture.h"
 #include "sp_tex_sample.h"
 #include "sp_tex_tile_cache.h"
 #include "sp_screen.h"
 #include "frontend/sw_winsys.h"


 /**
  * Bind a range [start, start+num-1] of samplers for a shader stage.
  */
 static void
 softpipe_bind_sampler_states(struct pipe_context *pipe,
                              enum pipe_shader_type shader,
                              unsigned start,
                              unsigned num,
                              void **samplers)
 {
    struct softpipe_context *softpipe = softpipe_context(pipe);
    unsigned i;

    assert(shader < PIPE_SHADER_TYPES);
    assert(start + num <= ARRAY_SIZE(softpipe->samplers[shader]));

    draw_flush(softpipe->draw);

    /* set the new samplers */
    for (i = 0; i < num; i++) {
       softpipe->samplers[shader][start + i] = samplers[i];
    }

    /* find highest non-null samplers[] entry */
    {
       unsigned j = MAX2(softpipe->num_samplers[shader], start + num);
       while (j > 0 && softpipe->samplers[shader][j - 1] == NULL)
          j--;
       softpipe->num_samplers[shader] = j;
    }

    if (shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_GEOMETRY) {
       draw_set_samplers(softpipe->draw,
                         shader,
                         softpipe->samplers[shader],
                         softpipe->num_samplers[shader]);
    }

    softpipe->dirty |= SP_NEW_SAMPLER;
 }


 static void
 softpipe_sampler_view_destroy(struct pipe_context *pipe,
                               struct pipe_sampler_view *view)
 {
    pipe_resource_reference(&view->texture, NULL);
    FREE(view);
 }


 void
 softpipe_set_sampler_views(struct pipe_context *pipe,
                            enum pipe_shader_type shader,
                            unsigned start,
                            unsigned num,
                            struct pipe_sampler_view **views)
 {
    struct softpipe_context *softpipe = softpipe_context(pipe);
    uint i;

    assert(shader < PIPE_SHADER_TYPES);
    assert(start + num <= ARRAY_SIZE(softpipe->sampler_views[shader]));

    draw_flush(softpipe->draw);

    /* set the new sampler views */
    for (i = 0; i < num; i++) {
       struct sp_sampler_view *sp_sviewsrc;
       struct sp_sampler_view *sp_sviewdst =
          &softpipe->tgsi.sampler[shader]->sp_sview[start + i];
       struct pipe_sampler_view **pview = &softpipe->sampler_views[shader][start + i];
       pipe_sampler_view_reference(pview, views[i]);
       sp_tex_tile_cache_set_sampler_view(softpipe->tex_cache[shader][start + i],
                                          views[i]);
       /*
        * We don't really have variants, however some bits are different per shader,
        * so just copy?
        */
       sp_sviewsrc = (struct sp_sampler_view *)*pview;
       if (sp_sviewsrc) {
          memcpy(sp_sviewdst, sp_sviewsrc, sizeof(*sp_sviewsrc));
          sp_sviewdst->compute_lambda = softpipe_get_lambda_func(&sp_sviewdst->base, shader);
          sp_sviewdst->compute_lambda_from_grad = softpipe_get_lambda_from_grad_func(&sp_sviewdst->base, shader);
          sp_sviewdst->cache = softpipe->tex_cache[shader][start + i];
       }
       else {
          memset(sp_sviewdst, 0,  sizeof(*sp_sviewsrc));
       }
    }


    /* find highest non-null sampler_views[] entry */
    {
       unsigned j = MAX2(softpipe->num_sampler_views[shader], start + num);
       while (j > 0 && softpipe->sampler_views[shader][j - 1] == NULL)
          j--;
       softpipe->num_sampler_views[shader] = j;
    }

    if (shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_GEOMETRY) {
       draw_set_sampler_views(softpipe->draw,
                              shader,
                              softpipe->sampler_views[shader],
                              softpipe->num_sampler_views[shader]);
    }

    softpipe->dirty |= SP_NEW_TEXTURE;
 }


 static void
 softpipe_delete_sampler_state(struct pipe_context *pipe,
                               void *sampler)
 {
    FREE( sampler );
 }


 static void
 prepare_shader_sampling(
    struct softpipe_context *sp,
    unsigned num,
    struct pipe_sampler_view **views,
    enum pipe_shader_type shader_type,
    struct pipe_resource *mapped_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS])
 {

    unsigned i;
    uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
    uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
    uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS];
    const void *addr;

    assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
    if (!num)
       return;

    for (i = 0; i < num; i++) {
       struct pipe_sampler_view *view = views[i];

       if (view) {
          struct pipe_resource *tex = view->texture;
          struct softpipe_resource *sp_tex = softpipe_resource(tex);
          unsigned width0 = tex->width0;
          unsigned num_layers = tex->depth0;
          unsigned first_level = 0;
          unsigned last_level = 0;

          /* We're referencing the texture's internal data, so save a
           * reference to it.
           */
          pipe_resource_reference(&mapped_tex[i], tex);

          if (!sp_tex->dt) {
             /* regular texture - setup array of mipmap level offsets */
             ASSERTED struct pipe_resource *res = view->texture;
             int j;

             if (view->target != PIPE_BUFFER) {
                first_level = view->u.tex.first_level;
                last_level = view->u.tex.last_level;
                assert(first_level <= last_level);
                assert(last_level <= res->last_level);
                addr = sp_tex->data;

                for (j = first_level; j <= last_level; j++) {
                   mip_offsets[j] = sp_tex->level_offset[j];
                   row_stride[j] = sp_tex->stride[j];
                   img_stride[j] = sp_tex->img_stride[j];
                }
                if (tex->target == PIPE_TEXTURE_1D_ARRAY ||
                    tex->target == PIPE_TEXTURE_2D_ARRAY ||
                    tex->target == PIPE_TEXTURE_CUBE ||
                    tex->target == PIPE_TEXTURE_CUBE_ARRAY) {
                   num_layers = view->u.tex.last_layer - view->u.tex.first_layer + 1;
                   for (j = first_level; j <= last_level; j++) {
                      mip_offsets[j] += view->u.tex.first_layer *
                                        sp_tex->img_stride[j];
                   }
                   if (view->target == PIPE_TEXTURE_CUBE ||
                       view->target == PIPE_TEXTURE_CUBE_ARRAY) {
                      assert(num_layers % 6 == 0);
                   }
                   assert(view->u.tex.first_layer <= view->u.tex.last_layer);
                   assert(view->u.tex.last_layer < res->array_size);
                }
             }
             else {
                unsigned view_blocksize = util_format_get_blocksize(view->format);
                addr = sp_tex->data;
                /* probably don't really need to fill that out */
                mip_offsets[0] = 0;
                row_stride[0] = 0;
                img_stride[0] = 0;

                /* everything specified in number of elements here. */
                width0 = view->u.buf.size / view_blocksize;
                addr = (uint8_t *)addr + view->u.buf.offset;
                assert(view->u.buf.offset + view->u.buf.size <= res->width0);
             }
          }
          else {
             /* display target texture/surface */
             /*
              * XXX: Where should this be unmapped?
              */
             struct softpipe_screen *screen = softpipe_screen(tex->screen);
             struct sw_winsys *winsys = screen->winsys;
             addr = winsys->displaytarget_map(winsys, sp_tex->dt,
                                              PIPE_MAP_READ);
             row_stride[0] = sp_tex->stride[0];
             img_stride[0] = sp_tex->img_stride[0];
             mip_offsets[0] = 0;
             assert(addr);
          }
          draw_set_mapped_texture(sp->draw,
                                  shader_type,
                                  i,
                                  width0, tex->height0, num_layers,
                                  first_level, last_level, 0, 0,
                                  addr,
                                  row_stride, img_stride, mip_offsets);
       }
    }
 }


 /**
  * Called during state validation when SP_NEW_TEXTURE is set.
  */
 void
 softpipe_prepare_vertex_sampling(struct softpipe_context *sp,
                                  unsigned num,
                                  struct pipe_sampler_view **views)
 {
    prepare_shader_sampling(sp, num, views, PIPE_SHADER_VERTEX,
                            sp->mapped_vs_tex);
 }

 void
 softpipe_cleanup_vertex_sampling(struct softpipe_context *ctx)
 {
    unsigned i;
    for (i = 0; i < ARRAY_SIZE(ctx->mapped_vs_tex); i++) {
       pipe_resource_reference(&ctx->mapped_vs_tex[i], NULL);
    }
 }


 /**
  * Called during state validation when SP_NEW_TEXTURE is set.
  */
 void
 softpipe_prepare_geometry_sampling(struct softpipe_context *sp,
                                    unsigned num,
                                    struct pipe_sampler_view **views)
 {
    prepare_shader_sampling(sp, num, views, PIPE_SHADER_GEOMETRY,
                            sp->mapped_gs_tex);
 }

 void
 softpipe_cleanup_geometry_sampling(struct softpipe_context *ctx)
 {
    unsigned i;
    for (i = 0; i < ARRAY_SIZE(ctx->mapped_gs_tex); i++) {
       pipe_resource_reference(&ctx->mapped_gs_tex[i], NULL);
    }
 }


 void
 softpipe_init_sampler_funcs(struct pipe_context *pipe)
 {
    pipe->create_sampler_state = softpipe_create_sampler_state;
    pipe->bind_sampler_states = softpipe_bind_sampler_states;
    pipe->delete_sampler_state = softpipe_delete_sampler_state;

    pipe->create_sampler_view = softpipe_create_sampler_view;
    pipe->set_sampler_views = softpipe_set_sampler_views;
    pipe->sampler_view_destroy = softpipe_sampler_view_destroy;
 }
	/**************************************************************************
	*
	* Copyright 2007 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, 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 VMWARE 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.
	*
	**************************************************************************/

	/* Authors:
	* Brian Paul
	*/

	#include "util/u_memory.h"
	#include "util/u_inlines.h"
	#include "util/format/u_format.h"

	#include "draw/draw_context.h"

	#include "sp_context.h"
	#include "sp_state.h"
	#include "sp_texture.h"
	#include "sp_tex_sample.h"
	#include "sp_tex_tile_cache.h"
	#include "sp_screen.h"
	#include "frontend/sw_winsys.h"


	/**
	* Bind a range [start, start+num-1] of samplers for a shader stage.
	*/
	static void
	softpipe_bind_sampler_states(struct pipe_context *pipe,
	enum pipe_shader_type shader,
	unsigned start,
	unsigned num,
	void **samplers)
	{
	struct softpipe_context *softpipe = softpipe_context(pipe);
	unsigned i;

	assert(shader < PIPE_SHADER_TYPES);
	assert(start + num <= ARRAY_SIZE(softpipe->samplers[shader]));

	draw_flush(softpipe->draw);

	/* set the new samplers */
	for (i = 0; i < num; i++) {
	softpipe->samplers[shader][start + i] = samplers[i];
	}

	/* find highest non-null samplers[] entry */
	{
	unsigned j = MAX2(softpipe->num_samplers[shader], start + num);
	while (j > 0 && softpipe->samplers[shader][j - 1] == NULL)
	j--;
	softpipe->num_samplers[shader] = j;
	}

	if (shader == PIPE_SHADER_VERTEX \|\| shader == PIPE_SHADER_GEOMETRY) {
	draw_set_samplers(softpipe->draw,
	shader,
	softpipe->samplers[shader],
	softpipe->num_samplers[shader]);
	}

	softpipe->dirty \|= SP_NEW_SAMPLER;
	}


	static void
	softpipe_sampler_view_destroy(struct pipe_context *pipe,
	struct pipe_sampler_view *view)
	{
	pipe_resource_reference(&view->texture, NULL);
	FREE(view);
	}


	void
	softpipe_set_sampler_views(struct pipe_context *pipe,
	enum pipe_shader_type shader,
	unsigned start,
	unsigned num,
	struct pipe_sampler_view **views)
	{
	struct softpipe_context *softpipe = softpipe_context(pipe);
	uint i;

	assert(shader < PIPE_SHADER_TYPES);
	assert(start + num <= ARRAY_SIZE(softpipe->sampler_views[shader]));

	draw_flush(softpipe->draw);

	/* set the new sampler views */
	for (i = 0; i < num; i++) {
	struct sp_sampler_view *sp_sviewsrc;
	struct sp_sampler_view *sp_sviewdst =
	&softpipe->tgsi.sampler[shader]->sp_sview[start + i];
	struct pipe_sampler_view **pview = &softpipe->sampler_views[shader][start + i];
	pipe_sampler_view_reference(pview, views[i]);
	sp_tex_tile_cache_set_sampler_view(softpipe->tex_cache[shader][start + i],
	views[i]);
	/*
	* We don't really have variants, however some bits are different per shader,
	* so just copy?
	*/
	sp_sviewsrc = (struct sp_sampler_view )pview;
	if (sp_sviewsrc) {
	memcpy(sp_sviewdst, sp_sviewsrc, sizeof(*sp_sviewsrc));
	sp_sviewdst->compute_lambda = softpipe_get_lambda_func(&sp_sviewdst->base, shader);
	sp_sviewdst->compute_lambda_from_grad = softpipe_get_lambda_from_grad_func(&sp_sviewdst->base, shader);
	sp_sviewdst->cache = softpipe->tex_cache[shader][start + i];
	}
	else {
	memset(sp_sviewdst, 0, sizeof(*sp_sviewsrc));
	}
	}


	/* find highest non-null sampler_views[] entry */
	{
	unsigned j = MAX2(softpipe->num_sampler_views[shader], start + num);
	while (j > 0 && softpipe->sampler_views[shader][j - 1] == NULL)
	j--;
	softpipe->num_sampler_views[shader] = j;
	}

	if (shader == PIPE_SHADER_VERTEX \|\| shader == PIPE_SHADER_GEOMETRY) {
	draw_set_sampler_views(softpipe->draw,
	shader,
	softpipe->sampler_views[shader],
	softpipe->num_sampler_views[shader]);
	}

	softpipe->dirty \|= SP_NEW_TEXTURE;
	}


	static void
	softpipe_delete_sampler_state(struct pipe_context *pipe,
	void *sampler)
	{
	FREE( sampler );
	}


	static void
	prepare_shader_sampling(
	struct softpipe_context *sp,
	unsigned num,
	struct pipe_sampler_view **views,
	enum pipe_shader_type shader_type,
	struct pipe_resource *mapped_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS])
	{

	unsigned i;
	uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
	uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
	uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS];
	const void *addr;

	assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
	if (!num)
	return;

	for (i = 0; i < num; i++) {
	struct pipe_sampler_view *view = views[i];

	if (view) {
	struct pipe_resource *tex = view->texture;
	struct softpipe_resource *sp_tex = softpipe_resource(tex);
	unsigned width0 = tex->width0;
	unsigned num_layers = tex->depth0;
	unsigned first_level = 0;
	unsigned last_level = 0;

	/* We're referencing the texture's internal data, so save a
	* reference to it.
	*/
	pipe_resource_reference(&mapped_tex[i], tex);

	if (!sp_tex->dt) {
	/* regular texture - setup array of mipmap level offsets */
	ASSERTED struct pipe_resource *res = view->texture;
	int j;

	if (view->target != PIPE_BUFFER) {
	first_level = view->u.tex.first_level;
	last_level = view->u.tex.last_level;
	assert(first_level <= last_level);
	assert(last_level <= res->last_level);
	addr = sp_tex->data;

	for (j = first_level; j <= last_level; j++) {
	mip_offsets[j] = sp_tex->level_offset[j];
	row_stride[j] = sp_tex->stride[j];
	img_stride[j] = sp_tex->img_stride[j];
	}
	if (tex->target == PIPE_TEXTURE_1D_ARRAY \|\|
	tex->target == PIPE_TEXTURE_2D_ARRAY \|\|
	tex->target == PIPE_TEXTURE_CUBE \|\|
	tex->target == PIPE_TEXTURE_CUBE_ARRAY) {
	num_layers = view->u.tex.last_layer - view->u.tex.first_layer + 1;
	for (j = first_level; j <= last_level; j++) {
	mip_offsets[j] += view->u.tex.first_layer *
	sp_tex->img_stride[j];
	}
	if (view->target == PIPE_TEXTURE_CUBE \|\|
	view->target == PIPE_TEXTURE_CUBE_ARRAY) {
	assert(num_layers % 6 == 0);
	}
	assert(view->u.tex.first_layer <= view->u.tex.last_layer);
	assert(view->u.tex.last_layer < res->array_size);
	}
	}
	else {
	unsigned view_blocksize = util_format_get_blocksize(view->format);
	addr = sp_tex->data;
	/* probably don't really need to fill that out */
	mip_offsets[0] = 0;
	row_stride[0] = 0;
	img_stride[0] = 0;

	/* everything specified in number of elements here. */
	width0 = view->u.buf.size / view_blocksize;
	addr = (uint8_t *)addr + view->u.buf.offset;
	assert(view->u.buf.offset + view->u.buf.size <= res->width0);
	}
	}
	else {
	/* display target texture/surface */
	/*
	* XXX: Where should this be unmapped?
	*/
	struct softpipe_screen *screen = softpipe_screen(tex->screen);
	struct sw_winsys *winsys = screen->winsys;
	addr = winsys->displaytarget_map(winsys, sp_tex->dt,
	PIPE_MAP_READ);
	row_stride[0] = sp_tex->stride[0];
	img_stride[0] = sp_tex->img_stride[0];
	mip_offsets[0] = 0;
	assert(addr);
	}
	draw_set_mapped_texture(sp->draw,
	shader_type,
	i,
	width0, tex->height0, num_layers,
	first_level, last_level, 0, 0,
	addr,
	row_stride, img_stride, mip_offsets);
	}
	}
	}


	/**
	* Called during state validation when SP_NEW_TEXTURE is set.
	*/
	void
	softpipe_prepare_vertex_sampling(struct softpipe_context *sp,
	unsigned num,
	struct pipe_sampler_view **views)
	{
	prepare_shader_sampling(sp, num, views, PIPE_SHADER_VERTEX,
	sp->mapped_vs_tex);
	}

	void
	softpipe_cleanup_vertex_sampling(struct softpipe_context *ctx)
	{
	unsigned i;
	for (i = 0; i < ARRAY_SIZE(ctx->mapped_vs_tex); i++) {
	pipe_resource_reference(&ctx->mapped_vs_tex[i], NULL);
	}
	}


	/**
	* Called during state validation when SP_NEW_TEXTURE is set.
	*/
	void
	softpipe_prepare_geometry_sampling(struct softpipe_context *sp,
	unsigned num,
	struct pipe_sampler_view **views)
	{
	prepare_shader_sampling(sp, num, views, PIPE_SHADER_GEOMETRY,
	sp->mapped_gs_tex);
	}

	void
	softpipe_cleanup_geometry_sampling(struct softpipe_context *ctx)
	{
	unsigned i;
	for (i = 0; i < ARRAY_SIZE(ctx->mapped_gs_tex); i++) {
	pipe_resource_reference(&ctx->mapped_gs_tex[i], NULL);
	}
	}


	void
	softpipe_init_sampler_funcs(struct pipe_context *pipe)
	{
	pipe->create_sampler_state = softpipe_create_sampler_state;
	pipe->bind_sampler_states = softpipe_bind_sampler_states;
	pipe->delete_sampler_state = softpipe_delete_sampler_state;

	pipe->create_sampler_view = softpipe_create_sampler_view;
	pipe->set_sampler_views = softpipe_set_sampler_views;
	pipe->sampler_view_destroy = softpipe_sampler_view_destroy;
	}