src/gallium/state_trackers/python/st_device.c - fp2-dev/platform/external/mesa3d - Gitiles

 /**************************************************************************
  *
  * Copyright 2008 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 "pipe/p_screen.h"
 #include "pipe/p_context.h"
 #include "pipe/p_shader_tokens.h"
 #include "pipe/p_inlines.h"
 #include "cso_cache/cso_context.h"
 #include "util/u_math.h"
 #include "util/u_memory.h"
 #include "util/u_simple_shaders.h"
 #include "trace/tr_screen.h"
 #include "trace/tr_context.h"

 #include "st_device.h"
 #include "st_winsys.h"


 static void
 st_device_really_destroy(struct st_device *st_dev)
 {
    if(st_dev->screen) {
       /* FIXME: Don't really destroy until we keep track of every single
        * reference or we end up causing a segmentation fault every time
        * python exits. */
 #if 0
       st_dev->screen->destroy(st_dev->screen);
 #endif
    }

    FREE(st_dev);
 }


 static void
 st_device_reference(struct st_device **ptr, struct st_device *st_dev)
 {
    struct st_device *old_dev = *ptr;

    if (pipe_reference((struct pipe_reference **)ptr, &st_dev->reference))
       st_device_really_destroy(old_dev);
 }


 void
 st_device_destroy(struct st_device *st_dev)
 {
    st_device_reference(&st_dev, NULL);
 }


 static struct st_device *
 st_device_create_from_st_winsys(const struct st_winsys *st_ws)
 {
    struct st_device *st_dev;

    if(!st_ws->screen_create ||
       !st_ws->context_create)
       return NULL;

    st_dev = CALLOC_STRUCT(st_device);
    if(!st_dev)
       return NULL;

    pipe_reference_init(&st_dev->reference, 1);
    st_dev->st_ws = st_ws;

    st_dev->real_screen = st_ws->screen_create();
    if(!st_dev->real_screen) {
       st_device_destroy(st_dev);
       return NULL;
    }

    st_dev->screen = trace_screen_create(st_dev->real_screen);
    if(!st_dev->screen) {
       st_device_destroy(st_dev);
       return NULL;
    }

    return st_dev;
 }


 struct st_device *
 st_device_create(boolean hardware) {
    if(hardware)
       return st_device_create_from_st_winsys(&st_hardpipe_winsys);
    else
       return st_device_create_from_st_winsys(&st_softpipe_winsys);
 }


 void
 st_context_destroy(struct st_context *st_ctx)
 {
    unsigned i;

    if(st_ctx) {
       struct st_device *st_dev = st_ctx->st_dev;

       if(st_ctx->cso) {
          cso_delete_vertex_shader(st_ctx->cso, st_ctx->vs);
          cso_delete_fragment_shader(st_ctx->cso, st_ctx->fs);

          cso_destroy_context(st_ctx->cso);
       }

       if(st_ctx->pipe)
          st_ctx->pipe->destroy(st_ctx->pipe);

       for(i = 0; i < PIPE_MAX_SAMPLERS; ++i)
          pipe_texture_reference(&st_ctx->sampler_textures[i], NULL);
       pipe_texture_reference(&st_ctx->default_texture, NULL);

       FREE(st_ctx);

       st_device_reference(&st_dev, NULL);
    }
 }


 struct st_context *
 st_context_create(struct st_device *st_dev)
 {
    struct st_context *st_ctx;

    st_ctx = CALLOC_STRUCT(st_context);
    if(!st_ctx)
       return NULL;

    st_device_reference(&st_ctx->st_dev, st_dev);

    st_ctx->real_pipe = st_dev->st_ws->context_create(st_dev->real_screen);
    if(!st_ctx->real_pipe) {
       st_context_destroy(st_ctx);
       return NULL;
    }

    st_ctx->pipe = trace_context_create(st_dev->screen, st_ctx->real_pipe);
    if(!st_ctx->pipe) {
       st_context_destroy(st_ctx);
       return NULL;
    }

    st_ctx->cso = cso_create_context(st_ctx->pipe);
    if(!st_ctx->cso) {
       st_context_destroy(st_ctx);
       return NULL;
    }

    /* disabled blending/masking */
    {
       struct pipe_blend_state blend;
       memset(&blend, 0, sizeof(blend));
       blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
       blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
       blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
       blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
       blend.colormask = PIPE_MASK_RGBA;
       cso_set_blend(st_ctx->cso, &blend);
    }

    /* no-op depth/stencil/alpha */
    {
       struct pipe_depth_stencil_alpha_state depthstencil;
       memset(&depthstencil, 0, sizeof(depthstencil));
       cso_set_depth_stencil_alpha(st_ctx->cso, &depthstencil);
    }

    /* rasterizer */
    {
       struct pipe_rasterizer_state rasterizer;
       memset(&rasterizer, 0, sizeof(rasterizer));
       rasterizer.front_winding = PIPE_WINDING_CW;
       rasterizer.cull_mode = PIPE_WINDING_NONE;
       cso_set_rasterizer(st_ctx->cso, &rasterizer);
    }

    /* clip */
    {
       struct pipe_clip_state clip;
       memset(&clip, 0, sizeof(clip));
       st_ctx->pipe->set_clip_state(st_ctx->pipe, &clip);
    }

    /* identity viewport */
    {
       struct pipe_viewport_state viewport;
       viewport.scale[0] = 1.0;
       viewport.scale[1] = 1.0;
       viewport.scale[2] = 1.0;
       viewport.scale[3] = 1.0;
       viewport.translate[0] = 0.0;
       viewport.translate[1] = 0.0;
       viewport.translate[2] = 0.0;
       viewport.translate[3] = 0.0;
       cso_set_viewport(st_ctx->cso, &viewport);
    }

    /* samplers */
    {
       struct pipe_sampler_state sampler;
       unsigned i;
       memset(&sampler, 0, sizeof(sampler));
       sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
       sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
       sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
       sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
       sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
       sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
       sampler.normalized_coords = 1;
       for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
          cso_single_sampler(st_ctx->cso, i, &sampler);
       cso_single_sampler_done(st_ctx->cso);
    }

    /* default textures */
    {
       struct pipe_screen *screen = st_dev->screen;
       struct pipe_texture templat;
       struct pipe_transfer *transfer;
       unsigned i;

       memset( &templat, 0, sizeof( templat ) );
       templat.target = PIPE_TEXTURE_2D;
       templat.format = PIPE_FORMAT_A8R8G8B8_UNORM;
       templat.block.size = 4;
       templat.block.width = 1;
       templat.block.height = 1;
       templat.width[0] = 1;
       templat.height[0] = 1;
       templat.depth[0] = 1;
       templat.last_level = 0;

       st_ctx->default_texture = screen->texture_create( screen, &templat );
       if(st_ctx->default_texture) {
          transfer = screen->get_tex_transfer(screen,
                                              st_ctx->default_texture,
                                              0, 0, 0,
                                              PIPE_TRANSFER_WRITE,
                                              0, 0,
                                              st_ctx->default_texture->width[0],
                                              st_ctx->default_texture->height[0]);
          if (transfer) {
             uint32_t *map;
             map = (uint32_t *) screen->transfer_map(screen, transfer);
             if(map) {
                *map = 0x00000000;
                screen->transfer_unmap(screen, transfer);
             }
             screen->tex_transfer_destroy(transfer);
          }
       }

       for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
          pipe_texture_reference(&st_ctx->sampler_textures[i], st_ctx->default_texture);

       cso_set_sampler_textures(st_ctx->cso, PIPE_MAX_SAMPLERS, st_ctx->sampler_textures);
    }

    /* vertex shader */
    {
       const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
                                       TGSI_SEMANTIC_GENERIC };
       const uint semantic_indexes[] = { 0, 0 };
       st_ctx->vs = util_make_vertex_passthrough_shader(st_ctx->pipe,
                                                        2,
                                                        semantic_names,
                                                        semantic_indexes);
       cso_set_vertex_shader_handle(st_ctx->cso, st_ctx->vs);
    }

    /* fragment shader */
    {
       st_ctx->fs = util_make_fragment_passthrough_shader(st_ctx->pipe);
       cso_set_fragment_shader_handle(st_ctx->cso, st_ctx->fs);
    }

    return st_ctx;
 }
	/**************************************************************************
	*
	* Copyright 2008 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 "pipe/p_screen.h"
	#include "pipe/p_context.h"
	#include "pipe/p_shader_tokens.h"
	#include "pipe/p_inlines.h"
	#include "cso_cache/cso_context.h"
	#include "util/u_math.h"
	#include "util/u_memory.h"
	#include "util/u_simple_shaders.h"
	#include "trace/tr_screen.h"
	#include "trace/tr_context.h"

	#include "st_device.h"
	#include "st_winsys.h"


	static void
	st_device_really_destroy(struct st_device *st_dev)
	{
	if(st_dev->screen) {
	/* FIXME: Don't really destroy until we keep track of every single
	* reference or we end up causing a segmentation fault every time
	* python exits. */
	#if 0
	st_dev->screen->destroy(st_dev->screen);
	#endif
	}

	FREE(st_dev);
	}


	static void
	st_device_reference(struct st_device *ptr, struct st_device st_dev)
	{
	struct st_device old_dev = ptr;

	if (pipe_reference((struct pipe_reference **)ptr, &st_dev->reference))
	st_device_really_destroy(old_dev);
	}


	void
	st_device_destroy(struct st_device *st_dev)
	{
	st_device_reference(&st_dev, NULL);
	}


	static struct st_device *
	st_device_create_from_st_winsys(const struct st_winsys *st_ws)
	{
	struct st_device *st_dev;

	if(!st_ws->screen_create \|\|
	!st_ws->context_create)
	return NULL;

	st_dev = CALLOC_STRUCT(st_device);
	if(!st_dev)
	return NULL;

	pipe_reference_init(&st_dev->reference, 1);
	st_dev->st_ws = st_ws;

	st_dev->real_screen = st_ws->screen_create();
	if(!st_dev->real_screen) {
	st_device_destroy(st_dev);
	return NULL;
	}

	st_dev->screen = trace_screen_create(st_dev->real_screen);
	if(!st_dev->screen) {
	st_device_destroy(st_dev);
	return NULL;
	}

	return st_dev;
	}


	struct st_device *
	st_device_create(boolean hardware) {
	if(hardware)
	return st_device_create_from_st_winsys(&st_hardpipe_winsys);
	else
	return st_device_create_from_st_winsys(&st_softpipe_winsys);
	}


	void
	st_context_destroy(struct st_context *st_ctx)
	{
	unsigned i;

	if(st_ctx) {
	struct st_device *st_dev = st_ctx->st_dev;

	if(st_ctx->cso) {
	cso_delete_vertex_shader(st_ctx->cso, st_ctx->vs);
	cso_delete_fragment_shader(st_ctx->cso, st_ctx->fs);

	cso_destroy_context(st_ctx->cso);
	}

	if(st_ctx->pipe)
	st_ctx->pipe->destroy(st_ctx->pipe);

	for(i = 0; i < PIPE_MAX_SAMPLERS; ++i)
	pipe_texture_reference(&st_ctx->sampler_textures[i], NULL);
	pipe_texture_reference(&st_ctx->default_texture, NULL);

	FREE(st_ctx);

	st_device_reference(&st_dev, NULL);
	}
	}


	struct st_context *
	st_context_create(struct st_device *st_dev)
	{
	struct st_context *st_ctx;

	st_ctx = CALLOC_STRUCT(st_context);
	if(!st_ctx)
	return NULL;

	st_device_reference(&st_ctx->st_dev, st_dev);

	st_ctx->real_pipe = st_dev->st_ws->context_create(st_dev->real_screen);
	if(!st_ctx->real_pipe) {
	st_context_destroy(st_ctx);
	return NULL;
	}

	st_ctx->pipe = trace_context_create(st_dev->screen, st_ctx->real_pipe);
	if(!st_ctx->pipe) {
	st_context_destroy(st_ctx);
	return NULL;
	}

	st_ctx->cso = cso_create_context(st_ctx->pipe);
	if(!st_ctx->cso) {
	st_context_destroy(st_ctx);
	return NULL;
	}

	/* disabled blending/masking */
	{
	struct pipe_blend_state blend;
	memset(&blend, 0, sizeof(blend));
	blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
	blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
	blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
	blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
	blend.colormask = PIPE_MASK_RGBA;
	cso_set_blend(st_ctx->cso, &blend);
	}

	/* no-op depth/stencil/alpha */
	{
	struct pipe_depth_stencil_alpha_state depthstencil;
	memset(&depthstencil, 0, sizeof(depthstencil));
	cso_set_depth_stencil_alpha(st_ctx->cso, &depthstencil);
	}

	/* rasterizer */
	{
	struct pipe_rasterizer_state rasterizer;
	memset(&rasterizer, 0, sizeof(rasterizer));
	rasterizer.front_winding = PIPE_WINDING_CW;
	rasterizer.cull_mode = PIPE_WINDING_NONE;
	cso_set_rasterizer(st_ctx->cso, &rasterizer);
	}

	/* clip */
	{
	struct pipe_clip_state clip;
	memset(&clip, 0, sizeof(clip));
	st_ctx->pipe->set_clip_state(st_ctx->pipe, &clip);
	}

	/* identity viewport */
	{
	struct pipe_viewport_state viewport;
	viewport.scale[0] = 1.0;
	viewport.scale[1] = 1.0;
	viewport.scale[2] = 1.0;
	viewport.scale[3] = 1.0;
	viewport.translate[0] = 0.0;
	viewport.translate[1] = 0.0;
	viewport.translate[2] = 0.0;
	viewport.translate[3] = 0.0;
	cso_set_viewport(st_ctx->cso, &viewport);
	}

	/* samplers */
	{
	struct pipe_sampler_state sampler;
	unsigned i;
	memset(&sampler, 0, sizeof(sampler));
	sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
	sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
	sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
	sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
	sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
	sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
	sampler.normalized_coords = 1;
	for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
	cso_single_sampler(st_ctx->cso, i, &sampler);
	cso_single_sampler_done(st_ctx->cso);
	}

	/* default textures */
	{
	struct pipe_screen *screen = st_dev->screen;
	struct pipe_texture templat;
	struct pipe_transfer *transfer;
	unsigned i;

	memset( &templat, 0, sizeof( templat ) );
	templat.target = PIPE_TEXTURE_2D;
	templat.format = PIPE_FORMAT_A8R8G8B8_UNORM;
	templat.block.size = 4;
	templat.block.width = 1;
	templat.block.height = 1;
	templat.width[0] = 1;
	templat.height[0] = 1;
	templat.depth[0] = 1;
	templat.last_level = 0;

	st_ctx->default_texture = screen->texture_create( screen, &templat );
	if(st_ctx->default_texture) {
	transfer = screen->get_tex_transfer(screen,
	st_ctx->default_texture,
	0, 0, 0,
	PIPE_TRANSFER_WRITE,
	0, 0,
	st_ctx->default_texture->width[0],
	st_ctx->default_texture->height[0]);
	if (transfer) {
	uint32_t *map;
	map = (uint32_t *) screen->transfer_map(screen, transfer);
	if(map) {
	*map = 0x00000000;
	screen->transfer_unmap(screen, transfer);
	}
	screen->tex_transfer_destroy(transfer);
	}
	}

	for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
	pipe_texture_reference(&st_ctx->sampler_textures[i], st_ctx->default_texture);

	cso_set_sampler_textures(st_ctx->cso, PIPE_MAX_SAMPLERS, st_ctx->sampler_textures);
	}

	/* vertex shader */
	{
	const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
	TGSI_SEMANTIC_GENERIC };
	const uint semantic_indexes[] = { 0, 0 };
	st_ctx->vs = util_make_vertex_passthrough_shader(st_ctx->pipe,
	2,
	semantic_names,
	semantic_indexes);
	cso_set_vertex_shader_handle(st_ctx->cso, st_ctx->vs);
	}

	/* fragment shader */
	{
	st_ctx->fs = util_make_fragment_passthrough_shader(st_ctx->pipe);
	cso_set_fragment_shader_handle(st_ctx->cso, st_ctx->fs);
	}

	return st_ctx;
	}