Subversion Repositories Kolibri OS

/**************************************************************************

 *

 * Copyright 2003 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 "i915_context.h"

#include "i915_state.h"

#include "i915_screen.h"

#include "i915_surface.h"

#include "i915_query.h"

#include "i915_batch.h"

#include "i915_resource.h"

#include "draw/draw_context.h"

#include "pipe/p_defines.h"

#include "util/u_inlines.h"

#include "util/u_memory.h"

#include "pipe/p_screen.h"

DEBUG_GET_ONCE_BOOL_OPTION(i915_no_vbuf, "I915_NO_VBUF", FALSE)

/*

 * Draw functions

 */

static void

i915_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)

{

   struct i915_context *i915 = i915_context(pipe);

   struct draw_context *draw = i915->draw;

   const void *mapped_indices = NULL;

   unsigned i;

   /*

    * Ack vs contants here, helps ipers a lot.

    */

   i915->dirty &= ~I915_NEW_VS_CONSTANTS;

   if (i915->dirty)

      i915_update_derived(i915);

   /*

    * Map vertex buffers

    */

   for (i = 0; i < i915->nr_vertex_buffers; i++) {

      const void *buf = i915->vertex_buffers[i].user_buffer;

      if (!buf)

            buf = i915_buffer(i915->vertex_buffers[i].buffer)->data;

      draw_set_mapped_vertex_buffer(draw, i, buf, ~0);

   }

   /*

    * Map index buffer, if present

    */

   if (info->indexed) {

      mapped_indices = i915->index_buffer.user_buffer;

      if (!mapped_indices)

         mapped_indices = i915_buffer(i915->index_buffer.buffer)->data;

      draw_set_indexes(draw,

                       (ubyte *) mapped_indices + i915->index_buffer.offset,

                       i915->index_buffer.index_size, ~0);

   }

   if (i915->constants[PIPE_SHADER_VERTEX])

      draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,

                                      i915_buffer(i915->constants[PIPE_SHADER_VERTEX])->data,

                                      (i915->current.num_user_constants[PIPE_SHADER_VERTEX] *

                                      4 * sizeof(float)));

   else

      draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0, NULL, 0);

   if (i915->num_vertex_sampler_views > 0)

      i915_prepare_vertex_sampling(i915);

   /*

    * Do the drawing

    */

   draw_vbo(i915->draw, info);

   /*

    * unmap vertex/index buffers

    */

   for (i = 0; i < i915->nr_vertex_buffers; i++) {

      draw_set_mapped_vertex_buffer(i915->draw, i, NULL, 0);

   }

   if (mapped_indices)

      draw_set_indexes(draw, NULL, 0, 0);

   if (i915->num_vertex_sampler_views > 0)

      i915_cleanup_vertex_sampling(i915);

   /*

    * Instead of flushing on every state change, we flush once here

    * when we fire the vbo.

    */

   draw_flush(i915->draw);

}

/*

 * Generic context functions

 */

static void i915_destroy(struct pipe_context *pipe)

{

   struct i915_context *i915 = i915_context(pipe);

   int i;

   if (i915->blitter)

      util_blitter_destroy(i915->blitter);

   draw_destroy(i915->draw);

   if(i915->batch)

      i915->iws->batchbuffer_destroy(i915->batch);

   /* unbind framebuffer */

   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {

      pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);

   }

   pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);

   /* unbind constant buffers */

   for (i = 0; i < PIPE_SHADER_TYPES; i++) {

      pipe_resource_reference(&i915->constants[i], NULL);

   }

   FREE(i915);

}

struct pipe_context *

i915_create_context(struct pipe_screen *screen, void *priv)

{

   struct i915_context *i915;

   i915 = CALLOC_STRUCT(i915_context);

   if (i915 == NULL)

      return NULL;

   i915->iws = i915_screen(screen)->iws;

   i915->base.screen = screen;

   i915->base.priv = priv;

   i915->base.destroy = i915_destroy;

   if (i915_screen(screen)->debug.use_blitter)

      i915->base.clear = i915_clear_blitter;

   else

      i915->base.clear = i915_clear_render;

   i915->base.draw_vbo = i915_draw_vbo;

   /* init this before draw */

   util_slab_create(&i915->transfer_pool, sizeof(struct pipe_transfer),

                    16, UTIL_SLAB_SINGLETHREADED);

   util_slab_create(&i915->texture_transfer_pool, sizeof(struct i915_transfer),

                    16, UTIL_SLAB_SINGLETHREADED);

   /* Batch stream debugging is a bit hacked up at the moment:

    */

   i915->batch = i915->iws->batchbuffer_create(i915->iws);

   /*

    * Create drawing context and plug our rendering stage into it.

    */

   i915->draw = draw_create(&i915->base);

   assert(i915->draw);

   if (!debug_get_option_i915_no_vbuf()) {

      draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));

   } else {

      draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));

   }

   i915_init_surface_functions(i915);

   i915_init_state_functions(i915);

   i915_init_flush_functions(i915);

   i915_init_resource_functions(i915);

   i915_init_query_functions(i915);

   /* Create blitter. */

   i915->blitter = util_blitter_create(&i915->base);

   assert(i915->blitter);

   /* must be done before installing Draw stages */

   util_blitter_cache_all_shaders(i915->blitter);

   draw_install_aaline_stage(i915->draw, &i915->base);

   draw_install_aapoint_stage(i915->draw, &i915->base);

   draw_enable_point_sprites(i915->draw, TRUE);

   i915->dirty = ~0;

   i915->hardware_dirty = ~0;

   i915->immediate_dirty = ~0;

   i915->dynamic_dirty = ~0;

   i915->static_dirty = ~0;

   i915->flush_dirty = 0;

   return &i915->base;

}