src/gallium/drivers/llvmpipe/lp_state_sampler.c - platform/external/mesa3d - Git at Google

 /**************************************************************************
  *
  * Copyright 2007 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.
  *
  **************************************************************************/

 /* Authors:
  *  Brian Paul
  */

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

 #include "draw/draw_context.h"

 #include "lp_context.h"
 #include "lp_screen.h"
 #include "lp_state.h"
 #include "lp_debug.h"
 #include "state_tracker/sw_winsys.h"


 static void *
 llvmpipe_create_sampler_state(struct pipe_context *pipe,
                               const struct pipe_sampler_state *sampler)
 {
    struct pipe_sampler_state *state = mem_dup(sampler, sizeof *sampler);

    if (LP_PERF & PERF_NO_MIP_LINEAR) {
       if (state->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
 	 state->min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
    }

    if (LP_PERF & PERF_NO_MIPMAPS)
       state->min_mip_filter = PIPE_TEX_MIPFILTER_NONE;

    if (LP_PERF & PERF_NO_LINEAR) {
       state->mag_img_filter = PIPE_TEX_FILTER_NEAREST;
       state->min_img_filter = PIPE_TEX_FILTER_NEAREST;
    }

    return state;
 }


 static void
 llvmpipe_bind_sampler_states(struct pipe_context *pipe,
                              unsigned shader,
                              unsigned start,
                              unsigned num,
                              void **samplers)
 {
    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
    unsigned i;

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

    /* Check for no-op */
    if (start + num <= llvmpipe->num_samplers[shader] &&
        !memcmp(llvmpipe->samplers[shader] + start, samplers,
                num * sizeof(void *))) {
       return;
    }

    draw_flush(llvmpipe->draw);

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

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

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

    llvmpipe->dirty |= LP_NEW_SAMPLER;
 }


 static void
 llvmpipe_bind_fragment_sampler_states(struct pipe_context *pipe,
                                       unsigned num, void **samplers)
 {
    llvmpipe_bind_sampler_states(pipe, PIPE_SHADER_FRAGMENT, 0, num, samplers);
 }


 static void
 llvmpipe_bind_vertex_sampler_states(struct pipe_context *pipe,
                                     unsigned num, void **samplers)
 {
    llvmpipe_bind_sampler_states(pipe, PIPE_SHADER_VERTEX, 0, num, samplers);
 }


 static void
 llvmpipe_bind_geometry_sampler_states(struct pipe_context *pipe,
                                       unsigned num, void **samplers)
 {
    llvmpipe_bind_sampler_states(pipe, PIPE_SHADER_GEOMETRY, 0, num, samplers);
 }

 static void
 llvmpipe_set_sampler_views(struct pipe_context *pipe,
                            unsigned shader,
                            unsigned start,
                            unsigned num,
                            struct pipe_sampler_view **views)
 {
    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
    uint i;

    assert(num <= PIPE_MAX_SAMPLERS);

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

    /* Check for no-op */
    if (start + num <= llvmpipe->num_sampler_views[shader] &&
        !memcmp(llvmpipe->sampler_views[shader] + start, views,
                num * sizeof(struct pipe_sampler_view *))) {
       return;
    }

    draw_flush(llvmpipe->draw);

    /* set the new sampler views */
    for (i = 0; i < num; i++) {
       pipe_sampler_view_reference(&llvmpipe->sampler_views[shader][start + i],
                                   views[i]);
    }

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

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

    llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
 }


 static void
 llvmpipe_set_fragment_sampler_views(struct pipe_context *pipe,
                                     unsigned num,
                                     struct pipe_sampler_view **views)
 {
    llvmpipe_set_sampler_views(pipe, PIPE_SHADER_FRAGMENT, 0, num, views);
 }


 static void
 llvmpipe_set_vertex_sampler_views(struct pipe_context *pipe,
                                   unsigned num,
                                   struct pipe_sampler_view **views)
 {
    llvmpipe_set_sampler_views(pipe, PIPE_SHADER_VERTEX, 0, num, views);
 }


 static void
 llvmpipe_set_geometry_sampler_views(struct pipe_context *pipe,
                                     unsigned num,
                                     struct pipe_sampler_view **views)
 {
    llvmpipe_set_sampler_views(pipe, PIPE_SHADER_GEOMETRY, 0, num, views);
 }

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


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


 /**
  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
  */
 void
 llvmpipe_prepare_vertex_sampling(struct llvmpipe_context *lp,
                                  unsigned num,
                                  struct pipe_sampler_view **views)
 {
    unsigned i;
    uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
    uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
    const void *data[PIPE_MAX_TEXTURE_LEVELS];

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

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

       if (view) {
          struct pipe_resource *tex = view->texture;
          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);

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

          if (!lp_tex->dt) {
             /* regular texture - setup array of mipmap level pointers */
             int j;
             for (j = view->u.tex.first_level; j <= tex->last_level; j++) {
                data[j] =
                   llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
                                                  LP_TEX_LAYOUT_LINEAR);
                row_stride[j] = lp_tex->row_stride[j];
                img_stride[j] = lp_tex->img_stride[j];
             }
          }
          else {
             /* display target texture/surface */
             /*
              * XXX: Where should this be unmapped?
              */
             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
             struct sw_winsys *winsys = screen->winsys;
             data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
                                                 PIPE_TRANSFER_READ);
             row_stride[0] = lp_tex->row_stride[0];
             img_stride[0] = lp_tex->img_stride[0];
             assert(data[0]);
          }
          draw_set_mapped_texture(lp->draw,
                                  PIPE_SHADER_VERTEX,
                                  i,
                                  tex->width0, tex->height0, tex->depth0,
                                  view->u.tex.first_level, tex->last_level,
                                  row_stride, img_stride, data);
       }
    }
 }

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

 void
 llvmpipe_init_sampler_funcs(struct llvmpipe_context *llvmpipe)
 {
    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;

    llvmpipe->pipe.bind_fragment_sampler_states  = llvmpipe_bind_fragment_sampler_states;
    llvmpipe->pipe.bind_vertex_sampler_states  = llvmpipe_bind_vertex_sampler_states;
    llvmpipe->pipe.bind_geometry_sampler_states  = llvmpipe_bind_geometry_sampler_states;
    llvmpipe->pipe.set_fragment_sampler_views = llvmpipe_set_fragment_sampler_views;
    llvmpipe->pipe.set_vertex_sampler_views = llvmpipe_set_vertex_sampler_views;
    llvmpipe->pipe.set_geometry_sampler_views = llvmpipe_set_geometry_sampler_views;
    llvmpipe->pipe.create_sampler_view = llvmpipe_create_sampler_view;
    llvmpipe->pipe.sampler_view_destroy = llvmpipe_sampler_view_destroy;
    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 }
	/**************************************************************************
	*
	* Copyright 2007 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.
	*
	**************************************************************************/

	/* Authors:
	* Brian Paul
	*/

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

	#include "draw/draw_context.h"

	#include "lp_context.h"
	#include "lp_screen.h"
	#include "lp_state.h"
	#include "lp_debug.h"
	#include "state_tracker/sw_winsys.h"


	static void *
	llvmpipe_create_sampler_state(struct pipe_context *pipe,
	const struct pipe_sampler_state *sampler)
	{
	struct pipe_sampler_state state = mem_dup(sampler, sizeof sampler);

	if (LP_PERF & PERF_NO_MIP_LINEAR) {
	if (state->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
	state->min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
	}

	if (LP_PERF & PERF_NO_MIPMAPS)
	state->min_mip_filter = PIPE_TEX_MIPFILTER_NONE;

	if (LP_PERF & PERF_NO_LINEAR) {
	state->mag_img_filter = PIPE_TEX_FILTER_NEAREST;
	state->min_img_filter = PIPE_TEX_FILTER_NEAREST;
	}

	return state;
	}


	static void
	llvmpipe_bind_sampler_states(struct pipe_context *pipe,
	unsigned shader,
	unsigned start,
	unsigned num,
	void **samplers)
	{
	struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
	unsigned i;

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

	/* Check for no-op */
	if (start + num <= llvmpipe->num_samplers[shader] &&
	!memcmp(llvmpipe->samplers[shader] + start, samplers,
	num * sizeof(void *))) {
	return;
	}

	draw_flush(llvmpipe->draw);

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

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

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

	llvmpipe->dirty \|= LP_NEW_SAMPLER;
	}


	static void
	llvmpipe_bind_fragment_sampler_states(struct pipe_context *pipe,
	unsigned num, void **samplers)
	{
	llvmpipe_bind_sampler_states(pipe, PIPE_SHADER_FRAGMENT, 0, num, samplers);
	}


	static void
	llvmpipe_bind_vertex_sampler_states(struct pipe_context *pipe,
	unsigned num, void **samplers)
	{
	llvmpipe_bind_sampler_states(pipe, PIPE_SHADER_VERTEX, 0, num, samplers);
	}


	static void
	llvmpipe_bind_geometry_sampler_states(struct pipe_context *pipe,
	unsigned num, void **samplers)
	{
	llvmpipe_bind_sampler_states(pipe, PIPE_SHADER_GEOMETRY, 0, num, samplers);
	}

	static void
	llvmpipe_set_sampler_views(struct pipe_context *pipe,
	unsigned shader,
	unsigned start,
	unsigned num,
	struct pipe_sampler_view **views)
	{
	struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
	uint i;

	assert(num <= PIPE_MAX_SAMPLERS);

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

	/* Check for no-op */
	if (start + num <= llvmpipe->num_sampler_views[shader] &&
	!memcmp(llvmpipe->sampler_views[shader] + start, views,
	num * sizeof(struct pipe_sampler_view *))) {
	return;
	}

	draw_flush(llvmpipe->draw);

	/* set the new sampler views */
	for (i = 0; i < num; i++) {
	pipe_sampler_view_reference(&llvmpipe->sampler_views[shader][start + i],
	views[i]);
	}

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

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

	llvmpipe->dirty \|= LP_NEW_SAMPLER_VIEW;
	}


	static void
	llvmpipe_set_fragment_sampler_views(struct pipe_context *pipe,
	unsigned num,
	struct pipe_sampler_view **views)
	{
	llvmpipe_set_sampler_views(pipe, PIPE_SHADER_FRAGMENT, 0, num, views);
	}


	static void
	llvmpipe_set_vertex_sampler_views(struct pipe_context *pipe,
	unsigned num,
	struct pipe_sampler_view **views)
	{
	llvmpipe_set_sampler_views(pipe, PIPE_SHADER_VERTEX, 0, num, views);
	}


	static void
	llvmpipe_set_geometry_sampler_views(struct pipe_context *pipe,
	unsigned num,
	struct pipe_sampler_view **views)
	{
	llvmpipe_set_sampler_views(pipe, PIPE_SHADER_GEOMETRY, 0, num, views);
	}

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


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


	/**
	* Called during state validation when LP_NEW_SAMPLER_VIEW is set.
	*/
	void
	llvmpipe_prepare_vertex_sampling(struct llvmpipe_context *lp,
	unsigned num,
	struct pipe_sampler_view **views)
	{
	unsigned i;
	uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
	uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
	const void *data[PIPE_MAX_TEXTURE_LEVELS];

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

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

	if (view) {
	struct pipe_resource *tex = view->texture;
	struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);

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

	if (!lp_tex->dt) {
	/* regular texture - setup array of mipmap level pointers */
	int j;
	for (j = view->u.tex.first_level; j <= tex->last_level; j++) {
	data[j] =
	llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
	LP_TEX_LAYOUT_LINEAR);
	row_stride[j] = lp_tex->row_stride[j];
	img_stride[j] = lp_tex->img_stride[j];
	}
	}
	else {
	/* display target texture/surface */
	/*
	* XXX: Where should this be unmapped?
	*/
	struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
	struct sw_winsys *winsys = screen->winsys;
	data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
	PIPE_TRANSFER_READ);
	row_stride[0] = lp_tex->row_stride[0];
	img_stride[0] = lp_tex->img_stride[0];
	assert(data[0]);
	}
	draw_set_mapped_texture(lp->draw,
	PIPE_SHADER_VERTEX,
	i,
	tex->width0, tex->height0, tex->depth0,
	view->u.tex.first_level, tex->last_level,
	row_stride, img_stride, data);
	}
	}
	}

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

	void
	llvmpipe_init_sampler_funcs(struct llvmpipe_context *llvmpipe)
	{
	llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;

	llvmpipe->pipe.bind_fragment_sampler_states = llvmpipe_bind_fragment_sampler_states;
	llvmpipe->pipe.bind_vertex_sampler_states = llvmpipe_bind_vertex_sampler_states;
	llvmpipe->pipe.bind_geometry_sampler_states = llvmpipe_bind_geometry_sampler_states;
	llvmpipe->pipe.set_fragment_sampler_views = llvmpipe_set_fragment_sampler_views;
	llvmpipe->pipe.set_vertex_sampler_views = llvmpipe_set_vertex_sampler_views;
	llvmpipe->pipe.set_geometry_sampler_views = llvmpipe_set_geometry_sampler_views;
	llvmpipe->pipe.create_sampler_view = llvmpipe_create_sampler_view;
	llvmpipe->pipe.sampler_view_destroy = llvmpipe_sampler_view_destroy;
	llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
	}