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    }
  75    draw_set_mapped_index_buffer(draw, mapped_indices);
  76
  77    if (i915->constants[PIPE_SHADER_VERTEX])
  78       draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
  79                                       i915_buffer(i915->constants[PIPE_SHADER_VERTEX])->data,
  80                                       (i915->current.num_user_constants[PIPE_SHADER_VERTEX] *
  81                                       4 * sizeof(float)));
  82    else
  83       draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0, NULL, 0);
  84
  85    if (i915->num_vertex_sampler_views > 0)
  86       i915_prepare_vertex_sampling(i915);
  87
  88    /*
  89     * Do the drawing
  90     */
  91    draw_vbo(i915->draw, info);
  92
  93    if (mapped_indices)
  94       draw_set_mapped_index_buffer(draw, NULL);
  95
  96    if (i915->num_vertex_sampler_views > 0)
  97       i915_cleanup_vertex_sampling(i915);
  98
  99    /*
 100     * Instead of flushing on every state change, we flush once here
 101     * when we fire the vbo.
 102     */
 103    draw_flush(i915->draw);
 104 }
 105
 106
 107 /*
 108  * Generic context functions
 109  */
 110
 111
 112 static void i915_destroy(struct pipe_context *pipe)
 113 {
 114    struct i915_context *i915 = i915_context(pipe);
 115    int i;
 116
 117    if (i915->blitter)
 118       util_blitter_destroy(i915->blitter);
 119
 120    draw_destroy(i915->draw);
 121
 122    if(i915->batch)
 123       i915->iws->batchbuffer_destroy(i915->batch);
 124
 125    /* unbind framebuffer */
 126    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 127       pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
 128    }
 129    pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
 130
 131    /* unbind constant buffers */
 132    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 133       pipe_resource_reference(&i915->constants[i], NULL);
 134    }
 135
 136    FREE(i915);
 137 }
 138
 139 struct pipe_context *
 140 i915_create_context(struct pipe_screen *screen, void *priv)
 141 {
 142    struct i915_context *i915;
 143
 144    i915 = CALLOC_STRUCT(i915_context);
 145    if (i915 == NULL)
 146       return NULL;
 147
 148    i915->iws = i915_screen(screen)->iws;
 149    i915->base.screen = screen;
 150    i915->base.priv = priv;
 151
 152    i915->base.destroy = i915_destroy;
 153
 154    if (i915_screen(screen)->debug.use_blitter)
 155       i915->base.clear = i915_clear_blitter;
 156    else
 157       i915->base.clear = i915_clear_render;
 158
 159    i915->base.draw_vbo = i915_draw_vbo;
 160
 161    /* init this before draw */
 162    util_slab_create(&i915->transfer_pool, sizeof(struct pipe_transfer),
 163                     16, UTIL_SLAB_SINGLETHREADED);
 164    util_slab_create(&i915->texture_transfer_pool, sizeof(struct i915_transfer),
 165                     16, UTIL_SLAB_SINGLETHREADED);
 166
 167    /* Batch stream debugging is a bit hacked up at the moment:
 168     */
 169    i915->batch = i915->iws->batchbuffer_create(i915->iws);
 170
 171    /*
 172     * Create drawing context and plug our rendering stage into it.
 173     */
 174    i915->draw = draw_create(&i915->base);
 175    assert(i915->draw);
 176    if (!debug_get_option_i915_no_vbuf()) {
 177       draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
 178    } else {
 179       draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
 180    }
 181
 182    i915_init_surface_functions(i915);
 183    i915_init_state_functions(i915);
 184    i915_init_flush_functions(i915);
 185    i915_init_resource_functions(i915);
 186    i915_init_query_functions(i915);
 187
 188    draw_install_aaline_stage(i915->draw, &i915->base);
 189    draw_install_aapoint_stage(i915->draw, &i915->base);
 190    draw_enable_point_sprites(i915->draw, TRUE);
 191
 192    /* augmented draw pipeline clobbers state functions */
 193    i915_init_fixup_state_functions(i915);
 194
 195    /* Create blitter last - calls state creation functions. */
 196    i915->blitter = util_blitter_create(&i915->base);
 197    assert(i915->blitter);
 198
 199    i915->dirty = ~0;
 200    i915->hardware_dirty = ~0;
 201    i915->immediate_dirty = ~0;
 202    i915->dynamic_dirty = ~0;
 203    i915->static_dirty = ~0;
 204    i915->flush_dirty = 0;
 205
 206    return &i915->base;
 207 }