src/gallium/drivers/i915/i915_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   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 VMWARE 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 "util/u_upload_mgr.h"
  41 #include "pipe/p_screen.h"
  42
  43
  44 DEBUG_GET_ONCE_BOOL_OPTION(i915_no_vbuf, "I915_NO_VBUF", FALSE)
  45
  46
  47 /*
  48  * Draw functions
  49  */
  50
  51
  52 static void
  53 i915_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
  54 {
  55    struct i915_context *i915 = i915_context(pipe);
  56    struct draw_context *draw = i915->draw;
  57    const void *mapped_indices = NULL;
  58    unsigned i;
  59
  60    /*
  61     * Ack vs contants here, helps ipers a lot.
  62     */
  63    i915->dirty &= ~I915_NEW_VS_CONSTANTS;
  64
  65    if (i915->dirty)
  66       i915_update_derived(i915);
  67
  68    /*
  69     * Map vertex buffers
  70     */
  71    for (i = 0; i < i915->nr_vertex_buffers; i++) {
  72       const void *buf = i915->vertex_buffers[i].user_buffer;
  73       if (!buf)
  74             buf = i915_buffer(i915->vertex_buffers[i].buffer)->data;
  75       draw_set_mapped_vertex_buffer(draw, i, buf, ~0);
  76    }
  77
  78    /*
  79     * Map index buffer, if present
  80     */
  81    if (info->indexed) {
  82       mapped_indices = i915->index_buffer.user_buffer;
  83       if (!mapped_indices)
  84          mapped_indices = i915_buffer(i915->index_buffer.buffer)->data;
  85       draw_set_indexes(draw,
  86                        (ubyte *) mapped_indices + i915->index_buffer.offset,
  87                        i915->index_buffer.index_size, ~0);
  88    }
  89
  90    if (i915->constants[PIPE_SHADER_VERTEX])
  91       draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
  92                                       i915_buffer(i915->constants[PIPE_SHADER_VERTEX])->data,
  93                                       (i915->current.num_user_constants[PIPE_SHADER_VERTEX] *
  94                                       4 * sizeof(float)));
  95    else
  96       draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0, NULL, 0);
  97
  98    if (i915->num_vertex_sampler_views > 0)
  99       i915_prepare_vertex_sampling(i915);
 100
 101    /*
 102     * Do the drawing
 103     */
 104    draw_vbo(i915->draw, info);
 105
 106    /*
 107     * unmap vertex/index buffers
 108     */
 109    for (i = 0; i < i915->nr_vertex_buffers; i++) {
 110       draw_set_mapped_vertex_buffer(i915->draw, i, NULL, 0);
 111    }
 112    if (mapped_indices)
 113       draw_set_indexes(draw, NULL, 0, 0);
 114
 115    if (i915->num_vertex_sampler_views > 0)
 116       i915_cleanup_vertex_sampling(i915);
 117
 118    /*
 119     * Instead of flushing on every state change, we flush once here
 120     * when we fire the vbo.
 121     */
 122    draw_flush(i915->draw);
 123 }
 124
 125
 126 /*
 127  * Generic context functions
 128  */
 129
 130
 131 static void i915_destroy(struct pipe_context *pipe)
 132 {
 133    struct i915_context *i915 = i915_context(pipe);
 134    int i;
 135
 136    if (i915->blitter)
 137       util_blitter_destroy(i915->blitter);
 138
 139    draw_destroy(i915->draw);
 140
 141    if (i915->base.stream_uploader)
 142       u_upload_destroy(i915->base.stream_uploader);
 143
 144    if(i915->batch)
 145       i915->iws->batchbuffer_destroy(i915->batch);
 146
 147    /* unbind framebuffer */
 148    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 149       pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
 150    }
 151    pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
 152
 153    /* unbind constant buffers */
 154    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 155       pipe_resource_reference(&i915->constants[i], NULL);
 156    }
 157
 158    FREE(i915);
 159 }
 160
 161 struct pipe_context *
 162 i915_create_context(struct pipe_screen *screen, void *priv, unsigned flags)
 163 {
 164    struct i915_context *i915;
 165
 166    i915 = CALLOC_STRUCT(i915_context);
 167    if (!i915)
 168       return NULL;
 169
 170    i915->iws = i915_screen(screen)->iws;
 171    i915->base.screen = screen;
 172    i915->base.priv = priv;
 173    i915->base.stream_uploader = u_upload_create_default(&i915->base);
 174    i915->base.const_uploader = i915->base.stream_uploader;
 175
 176    i915->base.destroy = i915_destroy;
 177
 178    if (i915_screen(screen)->debug.use_blitter)
 179       i915->base.clear = i915_clear_blitter;
 180    else
 181       i915->base.clear = i915_clear_render;
 182
 183    i915->base.draw_vbo = i915_draw_vbo;
 184
 185    /* init this before draw */
 186    slab_create(&i915->transfer_pool, sizeof(struct pipe_transfer),
 187                     16);
 188    slab_create(&i915->texture_transfer_pool, sizeof(struct i915_transfer),
 189                     16);
 190
 191    /* Batch stream debugging is a bit hacked up at the moment:
 192     */
 193    i915->batch = i915->iws->batchbuffer_create(i915->iws);
 194
 195    /*
 196     * Create drawing context and plug our rendering stage into it.
 197     */
 198    i915->draw = draw_create(&i915->base);
 199    assert(i915->draw);
 200    if (!debug_get_option_i915_no_vbuf()) {
 201       draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
 202    } else {
 203       draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
 204    }
 205
 206    i915_init_surface_functions(i915);
 207    i915_init_state_functions(i915);
 208    i915_init_flush_functions(i915);
 209    i915_init_resource_functions(i915);
 210    i915_init_query_functions(i915);
 211
 212    /* Create blitter. */
 213    i915->blitter = util_blitter_create(&i915->base);
 214    assert(i915->blitter);
 215
 216    /* must be done before installing Draw stages */
 217    util_blitter_cache_all_shaders(i915->blitter);
 218
 219    draw_install_aaline_stage(i915->draw, &i915->base);
 220    draw_install_aapoint_stage(i915->draw, &i915->base);
 221    draw_enable_point_sprites(i915->draw, TRUE);
 222
 223    i915->dirty = ~0;
 224    i915->hardware_dirty = ~0;
 225    i915->immediate_dirty = ~0;
 226    i915->dynamic_dirty = ~0;
 227    i915->static_dirty = ~0;
 228    i915->flush_dirty = 0;
 229
 230    return &i915->base;
 231 }