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    void *mapped_indices = NULL;
  57    unsigned cbuf_dirty;
  58
  59
  60    /*
  61     * Ack vs contants here, helps ipers a lot.
  62     */
  63    cbuf_dirty = i915->dirty & I915_NEW_VS_CONSTANTS;
  64    i915->dirty &= ~I915_NEW_VS_CONSTANTS;
  65
  66    if (i915->dirty)
  67       i915_update_derived(i915);
  68
  69    /*
  70     * Map index buffer, if present
  71     */
  72    if (info->indexed && i915->index_buffer.buffer)
  73       mapped_indices = i915_buffer(i915->index_buffer.buffer)->data;
  74    draw_set_mapped_index_buffer(draw, mapped_indices);
  75
  76    if (cbuf_dirty) {
  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
  86    /*
  87     * Do the drawing
  88     */
  89    draw_vbo(i915->draw, info);
  90
  91    if (mapped_indices)
  92       draw_set_mapped_index_buffer(draw, NULL);
  93 }
  94
  95
  96 /*
  97  * Generic context functions
  98  */
  99
 100
 101 static void i915_destroy(struct pipe_context *pipe)
 102 {
 103    struct i915_context *i915 = i915_context(pipe);
 104    int i;
 105
 106    draw_destroy(i915->draw);
 107
 108    if (i915->blitter)
 109       util_blitter_destroy(i915->blitter);
 110
 111    if(i915->batch)
 112       i915->iws->batchbuffer_destroy(i915->batch);
 113
 114    /* unbind framebuffer */
 115    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 116       pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
 117    }
 118    pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
 119
 120    /* unbind constant buffers */
 121    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 122       pipe_resource_reference(&i915->constants[i], NULL);
 123    }
 124
 125    FREE(i915);
 126 }
 127
 128 struct pipe_context *
 129 i915_create_context(struct pipe_screen *screen, void *priv)
 130 {
 131    struct i915_context *i915;
 132
 133    i915 = CALLOC_STRUCT(i915_context);
 134    if (i915 == NULL)
 135       return NULL;
 136
 137    i915->iws = i915_screen(screen)->iws;
 138    i915->base.winsys = NULL;
 139    i915->base.screen = screen;
 140    i915->base.priv = priv;
 141
 142    i915->base.destroy = i915_destroy;
 143
 144    if (i915_screen(screen)->debug.use_blitter)
 145       i915->base.clear = i915_clear_blitter;
 146    else
 147       i915->base.clear = i915_clear_render;
 148
 149    i915->base.draw_vbo = i915_draw_vbo;
 150
 151    /* init this before draw */
 152    util_slab_create(&i915->transfer_pool, sizeof(struct pipe_transfer),
 153                     16, UTIL_SLAB_SINGLETHREADED);
 154    util_slab_create(&i915->texture_transfer_pool, sizeof(struct i915_transfer),
 155                     16, UTIL_SLAB_SINGLETHREADED);
 156
 157    /* Batch stream debugging is a bit hacked up at the moment:
 158     */
 159    i915->batch = i915->iws->batchbuffer_create(i915->iws);
 160
 161    /*
 162     * Create drawing context and plug our rendering stage into it.
 163     */
 164    i915->draw = draw_create(&i915->base);
 165    assert(i915->draw);
 166    if (!debug_get_option_i915_no_vbuf()) {
 167       draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
 168    } else {
 169       draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
 170    }
 171
 172    i915_init_surface_functions(i915);
 173    i915_init_state_functions(i915);
 174    i915_init_flush_functions(i915);
 175    i915_init_resource_functions(i915);
 176    i915_init_query_functions(i915);
 177
 178    draw_install_aaline_stage(i915->draw, &i915->base);
 179    draw_install_aapoint_stage(i915->draw, &i915->base);
 180    draw_enable_point_sprites(i915->draw, TRUE);
 181
 182    /* augmented draw pipeline clobbers state functions */
 183    i915_init_fixup_state_functions(i915);
 184
 185    /* Create blitter last - calls state creation functions. */
 186    i915->blitter = util_blitter_create(&i915->base);
 187    assert(i915->blitter);
 188
 189    i915->dirty = ~0;
 190    i915->hardware_dirty = ~0;
 191    i915->immediate_dirty = ~0;
 192    i915->dynamic_dirty = ~0;
 193    i915->static_dirty = ~0;
 194    i915->flush_dirty = 0;
 195
 196    return &i915->base;
 197 }