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_batch.h"
  33 #include "i915_resource.h"
  34
  35 #include "draw/draw_context.h"
  36 #include "pipe/p_defines.h"
  37 #include "util/u_inlines.h"
  38 #include "util/u_memory.h"
  39 #include "pipe/p_screen.h"
  40
  41
  42 DEBUG_GET_ONCE_BOOL_OPTION(i915_no_vbuf, "I915_NO_VBUF", FALSE);
  43
  44
  45 /*
  46  * Draw functions
  47  */
  48
  49
  50 static void
  51 i915_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
  52 {
  53    struct i915_context *i915 = i915_context(pipe);
  54    struct draw_context *draw = i915->draw;
  55    void *mapped_indices = NULL;
  56    unsigned cbuf_dirty;
  57
  58
  59    /*
  60     * Ack vs contants here, helps ipers a lot.
  61     */
  62    cbuf_dirty = i915->dirty & I915_NEW_VS_CONSTANTS;
  63    i915->dirty &= ~I915_NEW_VS_CONSTANTS;
  64
  65    if (i915->dirty)
  66       i915_update_derived(i915);
  67
  68    /*
  69     * Map index buffer, if present
  70     */
  71    if (info->indexed && i915->index_buffer.buffer)
  72       mapped_indices = i915_buffer(i915->index_buffer.buffer)->data;
  73    draw_set_mapped_index_buffer(draw, mapped_indices);
  74
  75    if (cbuf_dirty) {
  76       if (i915->constants[PIPE_SHADER_VERTEX])
  77          draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
  78                                          i915_buffer(i915->constants[PIPE_SHADER_VERTEX])->data,
  79                                          (i915->current.num_user_constants[PIPE_SHADER_VERTEX] *
  80                                          4 * sizeof(float)));
  81       else
  82          draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0, NULL, 0);
  83    }
  84
  85    /*
  86     * Do the drawing
  87     */
  88    draw_vbo(i915->draw, info);
  89
  90    if (mapped_indices)
  91       draw_set_mapped_index_buffer(draw, NULL);
  92 }
  93
  94
  95 /*
  96  * Generic context functions
  97  */
  98
  99
 100 static void i915_destroy(struct pipe_context *pipe)
 101 {
 102    struct i915_context *i915 = i915_context(pipe);
 103    int i;
 104
 105    draw_destroy(i915->draw);
 106
 107    if(i915->batch)
 108       i915->iws->batchbuffer_destroy(i915->batch);
 109
 110    /* unbind framebuffer */
 111    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 112       pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
 113    }
 114    pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
 115
 116    /* unbind constant buffers */
 117    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 118       pipe_resource_reference(&i915->constants[i], NULL);
 119    }
 120
 121    FREE(i915);
 122 }
 123
 124 struct pipe_context *
 125 i915_create_context(struct pipe_screen *screen, void *priv)
 126 {
 127    struct i915_context *i915;
 128
 129    i915 = CALLOC_STRUCT(i915_context);
 130    if (i915 == NULL)
 131       return NULL;
 132
 133    i915->iws = i915_screen(screen)->iws;
 134    i915->base.winsys = NULL;
 135    i915->base.screen = screen;
 136    i915->base.priv = priv;
 137
 138    i915->base.destroy = i915_destroy;
 139
 140    i915->base.clear = i915_clear;
 141
 142    i915->base.draw_vbo = i915_draw_vbo;
 143
 144    /* init this before draw */
 145    util_slab_create(&i915->transfer_pool, sizeof(struct pipe_transfer),
 146                     16, UTIL_SLAB_SINGLETHREADED);
 147
 148    /*
 149     * Create drawing context and plug our rendering stage into it.
 150     */
 151    i915->draw = draw_create(&i915->base);
 152    assert(i915->draw);
 153    if (!debug_get_option_i915_no_vbuf()) {
 154       draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
 155    } else {
 156       draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
 157    }
 158
 159    i915_init_surface_functions(i915);
 160    i915_init_state_functions(i915);
 161    i915_init_flush_functions(i915);
 162    i915_init_resource_functions(i915);
 163
 164    draw_install_aaline_stage(i915->draw, &i915->base);
 165    draw_install_aapoint_stage(i915->draw, &i915->base);
 166
 167    i915->dirty = ~0;
 168    i915->hardware_dirty = ~0;
 169    i915->immediate_dirty = ~0;
 170    i915->dynamic_dirty = ~0;
 171    i915->flush_dirty = 0;
 172
 173    /* Batch stream debugging is a bit hacked up at the moment:
 174     */
 175    i915->batch = i915->iws->batchbuffer_create(i915->iws);
 176
 177    return &i915->base;
 178 }