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

 /**************************************************************************
  *
  * Copyright 2007 VMware, Inc.
  * All Rights Reserved.
  * Copyright 2008 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.
  *
  **************************************************************************/

 /* Author:
  *    Keith Whitwell <keithw@vmware.com>
  */

 #include "draw/draw_context.h"
 #include "draw/draw_vbuf.h"
 #include "pipe/p_defines.h"
 #include "util/u_inlines.h"
 #include "util/u_math.h"
 #include "util/u_memory.h"
 #include "util/simple_list.h"
 #include "util/u_upload_mgr.h"
 #include "lp_clear.h"
 #include "lp_context.h"
 #include "lp_flush.h"
 #include "lp_perf.h"
 #include "lp_state.h"
 #include "lp_surface.h"
 #include "lp_query.h"
 #include "lp_setup.h"
 #include "lp_screen.h"

 /* This is only safe if there's just one concurrent context */
 #ifdef EMBEDDED_DEVICE
 #define USE_GLOBAL_LLVM_CONTEXT
 #endif

 static void llvmpipe_destroy( struct pipe_context *pipe )
 {
    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
    uint i;

    lp_print_counters();

    if (llvmpipe->csctx) {
       lp_csctx_destroy(llvmpipe->csctx);
    }
    if (llvmpipe->blitter) {
       util_blitter_destroy(llvmpipe->blitter);
    }

    if (llvmpipe->pipe.stream_uploader)
       u_upload_destroy(llvmpipe->pipe.stream_uploader);

    /* This will also destroy llvmpipe->setup:
     */
    if (llvmpipe->draw)
       draw_destroy( llvmpipe->draw );

    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
       pipe_surface_reference(&llvmpipe->framebuffer.cbufs[i], NULL);
    }

    pipe_surface_reference(&llvmpipe->framebuffer.zsbuf, NULL);

    for (enum pipe_shader_type s = PIPE_SHADER_VERTEX; s < PIPE_SHADER_TYPES; s++) {
       for (i = 0; i < ARRAY_SIZE(llvmpipe->sampler_views[0]); i++) {
          pipe_sampler_view_reference(&llvmpipe->sampler_views[s][i], NULL);
       }
       for (i = 0; i < LP_MAX_TGSI_SHADER_IMAGES; i++) {
          pipe_resource_reference(&llvmpipe->images[s][i].resource, NULL);
       }
       for (i = 0; i < LP_MAX_TGSI_SHADER_BUFFERS; i++) {
          pipe_resource_reference(&llvmpipe->ssbos[s][i].buffer, NULL);
       }
       for (i = 0; i < ARRAY_SIZE(llvmpipe->constants[s]); i++) {
          pipe_resource_reference(&llvmpipe->constants[s][i].buffer, NULL);
       }
    }

    for (i = 0; i < llvmpipe->num_vertex_buffers; i++) {
       pipe_vertex_buffer_unreference(&llvmpipe->vertex_buffer[i]);
    }

    lp_delete_setup_variants(llvmpipe);

 #ifndef USE_GLOBAL_LLVM_CONTEXT
    LLVMContextDispose(llvmpipe->context);
 #endif
    llvmpipe->context = NULL;

    align_free( llvmpipe );
 }

 static void
 do_flush( struct pipe_context *pipe,
           struct pipe_fence_handle **fence,
           unsigned flags)
 {
    llvmpipe_flush(pipe, fence, __FUNCTION__);
 }


 static void
 llvmpipe_render_condition(struct pipe_context *pipe,
                           struct pipe_query *query,
                           bool condition,
                           enum pipe_render_cond_flag mode)
 {
    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );

    llvmpipe->render_cond_query = query;
    llvmpipe->render_cond_mode = mode;
    llvmpipe->render_cond_cond = condition;
 }

 static void
 llvmpipe_texture_barrier(struct pipe_context *pipe, unsigned flags)
 {
    llvmpipe_flush(pipe, NULL, __FUNCTION__);
 }

 static void lp_draw_disk_cache_find_shader(void *cookie,
                                            struct lp_cached_code *cache,
                                            unsigned char ir_sha1_cache_key[20])
 {
    struct llvmpipe_screen *screen = cookie;
    lp_disk_cache_find_shader(screen, cache, ir_sha1_cache_key);
 }

 static void lp_draw_disk_cache_insert_shader(void *cookie,
                                              struct lp_cached_code *cache,
                                              unsigned char ir_sha1_cache_key[20])
 {
    struct llvmpipe_screen *screen = cookie;
    lp_disk_cache_insert_shader(screen, cache, ir_sha1_cache_key);
 }

 static enum pipe_reset_status
 llvmpipe_get_device_reset_status(struct pipe_context *pipe)
 {
    return PIPE_NO_RESET;
 }

 struct pipe_context *
 llvmpipe_create_context(struct pipe_screen *screen, void *priv,
                         unsigned flags)
 {
    struct llvmpipe_context *llvmpipe;

    llvmpipe = align_malloc(sizeof(struct llvmpipe_context), 16);
    if (!llvmpipe)
       return NULL;

    util_init_math();

    memset(llvmpipe, 0, sizeof *llvmpipe);

    make_empty_list(&llvmpipe->fs_variants_list);

    make_empty_list(&llvmpipe->setup_variants_list);

    make_empty_list(&llvmpipe->cs_variants_list);

    llvmpipe->pipe.screen = screen;
    llvmpipe->pipe.priv = priv;

    /* Init the pipe context methods */
    llvmpipe->pipe.destroy = llvmpipe_destroy;
    llvmpipe->pipe.set_framebuffer_state = llvmpipe_set_framebuffer_state;
    llvmpipe->pipe.clear = llvmpipe_clear;
    llvmpipe->pipe.flush = do_flush;
    llvmpipe->pipe.texture_barrier = llvmpipe_texture_barrier;

    llvmpipe->pipe.render_condition = llvmpipe_render_condition;

    llvmpipe->pipe.get_device_reset_status = llvmpipe_get_device_reset_status;
    llvmpipe_init_blend_funcs(llvmpipe);
    llvmpipe_init_clip_funcs(llvmpipe);
    llvmpipe_init_draw_funcs(llvmpipe);
    llvmpipe_init_compute_funcs(llvmpipe);
    llvmpipe_init_sampler_funcs(llvmpipe);
    llvmpipe_init_query_funcs( llvmpipe );
    llvmpipe_init_vertex_funcs(llvmpipe);
    llvmpipe_init_so_funcs(llvmpipe);
    llvmpipe_init_fs_funcs(llvmpipe);
    llvmpipe_init_vs_funcs(llvmpipe);
    llvmpipe_init_gs_funcs(llvmpipe);
    llvmpipe_init_tess_funcs(llvmpipe);
    llvmpipe_init_rasterizer_funcs(llvmpipe);
    llvmpipe_init_context_resource_funcs( &llvmpipe->pipe );
    llvmpipe_init_surface_functions(llvmpipe);

 #ifdef USE_GLOBAL_LLVM_CONTEXT
    llvmpipe->context = LLVMGetGlobalContext();
 #else
    llvmpipe->context = LLVMContextCreate();
 #endif

    if (!llvmpipe->context)
       goto fail;

    /*
     * Create drawing context and plug our rendering stage into it.
     */
    llvmpipe->draw = draw_create_with_llvm_context(&llvmpipe->pipe,
                                                   llvmpipe->context);
    if (!llvmpipe->draw)
       goto fail;

    draw_set_disk_cache_callbacks(llvmpipe->draw,
                                  llvmpipe_screen(screen),
                                  lp_draw_disk_cache_find_shader,
                                  lp_draw_disk_cache_insert_shader);

    draw_set_constant_buffer_stride(llvmpipe->draw, lp_get_constant_buffer_stride(screen));

    /* FIXME: devise alternative to draw_texture_samplers */

    llvmpipe->setup = lp_setup_create( &llvmpipe->pipe,
                                       llvmpipe->draw );
    if (!llvmpipe->setup)
       goto fail;

    llvmpipe->csctx = lp_csctx_create( &llvmpipe->pipe );
    if (!llvmpipe->csctx)
       goto fail;
    llvmpipe->pipe.stream_uploader = u_upload_create_default(&llvmpipe->pipe);
    if (!llvmpipe->pipe.stream_uploader)
       goto fail;
    llvmpipe->pipe.const_uploader = llvmpipe->pipe.stream_uploader;

    llvmpipe->blitter = util_blitter_create(&llvmpipe->pipe);
    if (!llvmpipe->blitter) {
       goto fail;
    }

    /* must be done before installing Draw stages */
    util_blitter_cache_all_shaders(llvmpipe->blitter);

    /* plug in AA line/point stages */
    draw_install_aaline_stage(llvmpipe->draw, &llvmpipe->pipe);
    draw_install_aapoint_stage(llvmpipe->draw, &llvmpipe->pipe);
    draw_install_pstipple_stage(llvmpipe->draw, &llvmpipe->pipe);

    /* convert points and lines into triangles:
     * (otherwise, draw points and lines natively)
     */
    draw_wide_point_sprites(llvmpipe->draw, FALSE);
    draw_enable_point_sprites(llvmpipe->draw, FALSE);
    draw_wide_point_threshold(llvmpipe->draw, 10000.0);
    draw_wide_line_threshold(llvmpipe->draw, 10000.0);

    lp_reset_counters();

    /* If llvmpipe_set_scissor_states() is never called, we still need to
     * make sure that derived scissor state is computed.
     * See https://bugs.freedesktop.org/show_bug.cgi?id=101709
     */
    llvmpipe->dirty |= LP_NEW_SCISSOR;

    return &llvmpipe->pipe;

  fail:
    llvmpipe_destroy(&llvmpipe->pipe);
    return NULL;
 }
	/**************************************************************************
	*
	* Copyright 2007 VMware, Inc.
	* All Rights Reserved.
	* Copyright 2008 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.
	*
	**************************************************************************/

	/* Author:
	* Keith Whitwell <keithw@vmware.com>
	*/

	#include "draw/draw_context.h"
	#include "draw/draw_vbuf.h"
	#include "pipe/p_defines.h"
	#include "util/u_inlines.h"
	#include "util/u_math.h"
	#include "util/u_memory.h"
	#include "util/simple_list.h"
	#include "util/u_upload_mgr.h"
	#include "lp_clear.h"
	#include "lp_context.h"
	#include "lp_flush.h"
	#include "lp_perf.h"
	#include "lp_state.h"
	#include "lp_surface.h"
	#include "lp_query.h"
	#include "lp_setup.h"
	#include "lp_screen.h"

	/* This is only safe if there's just one concurrent context */
	#ifdef EMBEDDED_DEVICE
	#define USE_GLOBAL_LLVM_CONTEXT
	#endif

	static void llvmpipe_destroy( struct pipe_context *pipe )
	{
	struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
	uint i;

	lp_print_counters();

	if (llvmpipe->csctx) {
	lp_csctx_destroy(llvmpipe->csctx);
	}
	if (llvmpipe->blitter) {
	util_blitter_destroy(llvmpipe->blitter);
	}

	if (llvmpipe->pipe.stream_uploader)
	u_upload_destroy(llvmpipe->pipe.stream_uploader);

	/* This will also destroy llvmpipe->setup:
	*/
	if (llvmpipe->draw)
	draw_destroy( llvmpipe->draw );

	for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
	pipe_surface_reference(&llvmpipe->framebuffer.cbufs[i], NULL);
	}

	pipe_surface_reference(&llvmpipe->framebuffer.zsbuf, NULL);

	for (enum pipe_shader_type s = PIPE_SHADER_VERTEX; s < PIPE_SHADER_TYPES; s++) {
	for (i = 0; i < ARRAY_SIZE(llvmpipe->sampler_views[0]); i++) {
	pipe_sampler_view_reference(&llvmpipe->sampler_views[s][i], NULL);
	}
	for (i = 0; i < LP_MAX_TGSI_SHADER_IMAGES; i++) {
	pipe_resource_reference(&llvmpipe->images[s][i].resource, NULL);
	}
	for (i = 0; i < LP_MAX_TGSI_SHADER_BUFFERS; i++) {
	pipe_resource_reference(&llvmpipe->ssbos[s][i].buffer, NULL);
	}
	for (i = 0; i < ARRAY_SIZE(llvmpipe->constants[s]); i++) {
	pipe_resource_reference(&llvmpipe->constants[s][i].buffer, NULL);
	}
	}

	for (i = 0; i < llvmpipe->num_vertex_buffers; i++) {
	pipe_vertex_buffer_unreference(&llvmpipe->vertex_buffer[i]);
	}

	lp_delete_setup_variants(llvmpipe);

	#ifndef USE_GLOBAL_LLVM_CONTEXT
	LLVMContextDispose(llvmpipe->context);
	#endif
	llvmpipe->context = NULL;

	align_free( llvmpipe );
	}

	static void
	do_flush( struct pipe_context *pipe,
	struct pipe_fence_handle **fence,
	unsigned flags)
	{
	llvmpipe_flush(pipe, fence, __FUNCTION__);
	}


	static void
	llvmpipe_render_condition(struct pipe_context *pipe,
	struct pipe_query *query,
	bool condition,
	enum pipe_render_cond_flag mode)
	{
	struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );

	llvmpipe->render_cond_query = query;
	llvmpipe->render_cond_mode = mode;
	llvmpipe->render_cond_cond = condition;
	}

	static void
	llvmpipe_texture_barrier(struct pipe_context *pipe, unsigned flags)
	{
	llvmpipe_flush(pipe, NULL, __FUNCTION__);
	}

	static void lp_draw_disk_cache_find_shader(void *cookie,
	struct lp_cached_code *cache,
	unsigned char ir_sha1_cache_key[20])
	{
	struct llvmpipe_screen *screen = cookie;
	lp_disk_cache_find_shader(screen, cache, ir_sha1_cache_key);
	}

	static void lp_draw_disk_cache_insert_shader(void *cookie,
	struct lp_cached_code *cache,
	unsigned char ir_sha1_cache_key[20])
	{
	struct llvmpipe_screen *screen = cookie;
	lp_disk_cache_insert_shader(screen, cache, ir_sha1_cache_key);
	}

	static enum pipe_reset_status
	llvmpipe_get_device_reset_status(struct pipe_context *pipe)
	{
	return PIPE_NO_RESET;
	}

	struct pipe_context *
	llvmpipe_create_context(struct pipe_screen screen, void priv,
	unsigned flags)
	{
	struct llvmpipe_context *llvmpipe;

	llvmpipe = align_malloc(sizeof(struct llvmpipe_context), 16);
	if (!llvmpipe)
	return NULL;

	util_init_math();

	memset(llvmpipe, 0, sizeof *llvmpipe);

	make_empty_list(&llvmpipe->fs_variants_list);

	make_empty_list(&llvmpipe->setup_variants_list);

	make_empty_list(&llvmpipe->cs_variants_list);

	llvmpipe->pipe.screen = screen;
	llvmpipe->pipe.priv = priv;

	/* Init the pipe context methods */
	llvmpipe->pipe.destroy = llvmpipe_destroy;
	llvmpipe->pipe.set_framebuffer_state = llvmpipe_set_framebuffer_state;
	llvmpipe->pipe.clear = llvmpipe_clear;
	llvmpipe->pipe.flush = do_flush;
	llvmpipe->pipe.texture_barrier = llvmpipe_texture_barrier;

	llvmpipe->pipe.render_condition = llvmpipe_render_condition;

	llvmpipe->pipe.get_device_reset_status = llvmpipe_get_device_reset_status;
	llvmpipe_init_blend_funcs(llvmpipe);
	llvmpipe_init_clip_funcs(llvmpipe);
	llvmpipe_init_draw_funcs(llvmpipe);
	llvmpipe_init_compute_funcs(llvmpipe);
	llvmpipe_init_sampler_funcs(llvmpipe);
	llvmpipe_init_query_funcs( llvmpipe );
	llvmpipe_init_vertex_funcs(llvmpipe);
	llvmpipe_init_so_funcs(llvmpipe);
	llvmpipe_init_fs_funcs(llvmpipe);
	llvmpipe_init_vs_funcs(llvmpipe);
	llvmpipe_init_gs_funcs(llvmpipe);
	llvmpipe_init_tess_funcs(llvmpipe);
	llvmpipe_init_rasterizer_funcs(llvmpipe);
	llvmpipe_init_context_resource_funcs( &llvmpipe->pipe );
	llvmpipe_init_surface_functions(llvmpipe);

	#ifdef USE_GLOBAL_LLVM_CONTEXT
	llvmpipe->context = LLVMGetGlobalContext();
	#else
	llvmpipe->context = LLVMContextCreate();
	#endif

	if (!llvmpipe->context)
	goto fail;

	/*
	* Create drawing context and plug our rendering stage into it.
	*/
	llvmpipe->draw = draw_create_with_llvm_context(&llvmpipe->pipe,
	llvmpipe->context);
	if (!llvmpipe->draw)
	goto fail;

	draw_set_disk_cache_callbacks(llvmpipe->draw,
	llvmpipe_screen(screen),
	lp_draw_disk_cache_find_shader,
	lp_draw_disk_cache_insert_shader);

	draw_set_constant_buffer_stride(llvmpipe->draw, lp_get_constant_buffer_stride(screen));

	/* FIXME: devise alternative to draw_texture_samplers */

	llvmpipe->setup = lp_setup_create( &llvmpipe->pipe,
	llvmpipe->draw );
	if (!llvmpipe->setup)
	goto fail;

	llvmpipe->csctx = lp_csctx_create( &llvmpipe->pipe );
	if (!llvmpipe->csctx)
	goto fail;
	llvmpipe->pipe.stream_uploader = u_upload_create_default(&llvmpipe->pipe);
	if (!llvmpipe->pipe.stream_uploader)
	goto fail;
	llvmpipe->pipe.const_uploader = llvmpipe->pipe.stream_uploader;

	llvmpipe->blitter = util_blitter_create(&llvmpipe->pipe);
	if (!llvmpipe->blitter) {
	goto fail;
	}

	/* must be done before installing Draw stages */
	util_blitter_cache_all_shaders(llvmpipe->blitter);

	/* plug in AA line/point stages */
	draw_install_aaline_stage(llvmpipe->draw, &llvmpipe->pipe);
	draw_install_aapoint_stage(llvmpipe->draw, &llvmpipe->pipe);
	draw_install_pstipple_stage(llvmpipe->draw, &llvmpipe->pipe);

	/* convert points and lines into triangles:
	* (otherwise, draw points and lines natively)
	*/
	draw_wide_point_sprites(llvmpipe->draw, FALSE);
	draw_enable_point_sprites(llvmpipe->draw, FALSE);
	draw_wide_point_threshold(llvmpipe->draw, 10000.0);
	draw_wide_line_threshold(llvmpipe->draw, 10000.0);

	lp_reset_counters();

	/* If llvmpipe_set_scissor_states() is never called, we still need to
	* make sure that derived scissor state is computed.
	* See https://bugs.freedesktop.org/show_bug.cgi?id=101709
	*/
	llvmpipe->dirty \|= LP_NEW_SCISSOR;

	return &llvmpipe->pipe;

	fail:
	llvmpipe_destroy(&llvmpipe->pipe);
	return NULL;
	}