src/gallium/drivers/i915/i915_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "i915_context.h"
  29 #include "i915_state.h"
  30 #include "i915_screen.h"
  31 #include "i915_surface.h"
  32 #include "i915_query.h"
  33 #include "i915_batch.h"
  34 #include "i915_resource.h"
  35
  36 #include "draw/draw_context.h"
  37 #include "pipe/p_defines.h"
  38 #include "util/u_inlines.h"
  39 #include "util/u_memory.h"
  40 #include "pipe/p_screen.h"
  41
  42
  43 DEBUG_GET_ONCE_BOOL_OPTION(i915_no_vbuf, "I915_NO_VBUF", FALSE)
  44
  45
  46 /*
  47  * Draw functions
  48  */
  49
  50
  51 static void
  52 i915_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
  53 {
  54    struct i915_context *i915 = i915_context(pipe);
  55    struct draw_context *draw = i915->draw;
  56    const void *mapped_indices = NULL;
  57
  58
  59    /*
  60     * Ack vs contants here, helps ipers a lot.
  61     */
  62    i915->dirty &= ~I915_NEW_VS_CONSTANTS;
  63
  64    if (i915->dirty)
  65       i915_update_derived(i915);
  66
  67    /*
  68     * Map index buffer, if present
  69     */
  70    if (info->indexed) {
  71       mapped_indices = i915->index_buffer.user_buffer;
  72       if (!mapped_indices)
  73          mapped_indices = i915_buffer(i915->index_buffer.buffer)->data;
  74       draw_set_indexes(draw,
  75                        (ubyte *) mapped_indices + i915->index_buffer.offset,
  76                        i915->index_buffer.index_size);
  77    }
  78
  79    if (i915->constants[PIPE_SHADER_VERTEX])
  80       draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
  81                                       i915_buffer(i915->constants[PIPE_SHADER_VERTEX])->data,
  82                                       (i915->current.num_user_constants[PIPE_SHADER_VERTEX] *
  83                                       4 * sizeof(float)));
  84    else
  85       draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0, NULL, 0);
  86
  87    if (i915->num_vertex_sampler_views > 0)
  88       i915_prepare_vertex_sampling(i915);
  89
  90    /*
  91     * Do the drawing
  92     */
  93    draw_vbo(i915->draw, info);
  94
  95    if (mapped_indices)
  96       draw_set_indexes(draw, NULL, 0);
  97
  98    if (i915->num_vertex_sampler_views > 0)
  99       i915_cleanup_vertex_sampling(i915);
 100
 101    /*
 102     * Instead of flushing on every state change, we flush once here
 103     * when we fire the vbo.
 104     */
 105    draw_flush(i915->draw);
 106 }
 107
 108
 109 /*
 110  * Generic context functions
 111  */
 112
 113
 114 static void i915_destroy(struct pipe_context *pipe)
 115 {
 116    struct i915_context *i915 = i915_context(pipe);
 117    int i;
 118
 119    if (i915->blitter)
 120       util_blitter_destroy(i915->blitter);
 121
 122    draw_destroy(i915->draw);
 123
 124    if(i915->batch)
 125       i915->iws->batchbuffer_destroy(i915->batch);
 126
 127    /* unbind framebuffer */
 128    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 129       pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
 130    }
 131    pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
 132
 133    /* unbind constant buffers */
 134    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 135       pipe_resource_reference(&i915->constants[i], NULL);
 136    }
 137
 138    FREE(i915);
 139 }
 140
 141 struct pipe_context *
 142 i915_create_context(struct pipe_screen *screen, void *priv)
 143 {
 144    struct i915_context *i915;
 145
 146    i915 = CALLOC_STRUCT(i915_context);
 147    if (i915 == NULL)
 148       return NULL;
 149
 150    i915->iws = i915_screen(screen)->iws;
 151    i915->base.screen = screen;
 152    i915->base.priv = priv;
 153
 154    i915->base.destroy = i915_destroy;
 155
 156    if (i915_screen(screen)->debug.use_blitter)
 157       i915->base.clear = i915_clear_blitter;
 158    else
 159       i915->base.clear = i915_clear_render;
 160
 161    i915->base.draw_vbo = i915_draw_vbo;
 162
 163    /* init this before draw */
 164    util_slab_create(&i915->transfer_pool, sizeof(struct pipe_transfer),
 165                     16, UTIL_SLAB_SINGLETHREADED);
 166    util_slab_create(&i915->texture_transfer_pool, sizeof(struct i915_transfer),
 167                     16, UTIL_SLAB_SINGLETHREADED);
 168
 169    /* Batch stream debugging is a bit hacked up at the moment:
 170     */
 171    i915->batch = i915->iws->batchbuffer_create(i915->iws);
 172
 173    /*
 174     * Create drawing context and plug our rendering stage into it.
 175     */
 176    i915->draw = draw_create(&i915->base);
 177    assert(i915->draw);
 178    if (!debug_get_option_i915_no_vbuf()) {
 179       draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
 180    } else {
 181       draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
 182    }
 183
 184    i915_init_surface_functions(i915);
 185    i915_init_state_functions(i915);
 186    i915_init_flush_functions(i915);
 187    i915_init_resource_functions(i915);
 188    i915_init_query_functions(i915);
 189
 190    /* Create blitter. */
 191    i915->blitter = util_blitter_create(&i915->base);
 192    assert(i915->blitter);
 193
 194    /* must be done before installing Draw stages */
 195    util_blitter_cache_all_shaders(i915->blitter);
 196
 197    draw_install_aaline_stage(i915->draw, &i915->base);
 198    draw_install_aapoint_stage(i915->draw, &i915->base);
 199    draw_enable_point_sprites(i915->draw, TRUE);
 200
 201    i915->dirty = ~0;
 202    i915->hardware_dirty = ~0;
 203    i915->immediate_dirty = ~0;
 204    i915->dynamic_dirty = ~0;
 205    i915->static_dirty = ~0;
 206    i915->flush_dirty = 0;
 207
 208    return &i915->base;
 209 }