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_prim.h"
  41 #include "util/u_upload_mgr.h"
  42 #include "pipe/p_screen.h"
  43
  44
  45 DEBUG_GET_ONCE_BOOL_OPTION(i915_no_vbuf, "I915_NO_VBUF", FALSE)
  46
  47
  48 /*
  49  * Draw functions
  50  */
  51
  52
  53 static void
  54 i915_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
  55 {
  56    struct i915_context *i915 = i915_context(pipe);
  57    struct draw_context *draw = i915->draw;
  58    const void *mapped_indices = NULL;
  59    unsigned i;
  60
  61    if (!u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
  62       return;
  63
  64    /*
  65     * Ack vs contants here, helps ipers a lot.
  66     */
  67    i915->dirty &= ~I915_NEW_VS_CONSTANTS;
  68
  69    if (i915->dirty)
  70       i915_update_derived(i915);
  71
  72    /*
  73     * Map vertex buffers
  74     */
  75    for (i = 0; i < i915->nr_vertex_buffers; i++) {
  76       const void *buf = i915->vertex_buffers[i].is_user_buffer ?
  77                            i915->vertex_buffers[i].buffer.user : NULL;
  78       if (!buf) {
  79          if (!i915->vertex_buffers[i].buffer.resource)
  80             continue;
  81          buf = i915_buffer(i915->vertex_buffers[i].buffer.resource)->data;
  82       }
  83       draw_set_mapped_vertex_buffer(draw, i, buf, ~0);
  84    }
  85
  86    /*
  87     * Map index buffer, if present
  88     */
  89    if (info->index_size) {
  90       mapped_indices = info->has_user_indices ? info->index.user : NULL;
  91       if (!mapped_indices)
  92          mapped_indices = i915_buffer(info->index.resource)->data;
  93       draw_set_indexes(draw,
  94                        (ubyte *) mapped_indices,
  95                        info->index_size, ~0);
  96    }
  97
  98    if (i915->constants[PIPE_SHADER_VERTEX])
  99       draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
 100                                       i915_buffer(i915->constants[PIPE_SHADER_VERTEX])->data,
 101                                       (i915->current.num_user_constants[PIPE_SHADER_VERTEX] *
 102                                       4 * sizeof(float)));
 103    else
 104       draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0, NULL, 0);
 105
 106    if (i915->num_vertex_sampler_views > 0)
 107       i915_prepare_vertex_sampling(i915);
 108
 109    /*
 110     * Do the drawing
 111     */
 112    draw_vbo(i915->draw, info);
 113
 114    /*
 115     * unmap vertex/index buffers
 116     */
 117    for (i = 0; i < i915->nr_vertex_buffers; i++) {
 118       draw_set_mapped_vertex_buffer(i915->draw, i, NULL, 0);
 119    }
 120    if (mapped_indices)
 121       draw_set_indexes(draw, NULL, 0, 0);
 122
 123    if (i915->num_vertex_sampler_views > 0)
 124       i915_cleanup_vertex_sampling(i915);
 125
 126    /*
 127     * Instead of flushing on every state change, we flush once here
 128     * when we fire the vbo.
 129     */
 130    draw_flush(i915->draw);
 131 }
 132
 133
 134 /*
 135  * Generic context functions
 136  */
 137
 138
 139 static void i915_destroy(struct pipe_context *pipe)
 140 {
 141    struct i915_context *i915 = i915_context(pipe);
 142    int i;
 143
 144    if (i915->blitter)
 145       util_blitter_destroy(i915->blitter);
 146
 147    draw_destroy(i915->draw);
 148
 149    if (i915->base.stream_uploader)
 150       u_upload_destroy(i915->base.stream_uploader);
 151
 152    if(i915->batch)
 153       i915->iws->batchbuffer_destroy(i915->batch);
 154
 155    /* unbind framebuffer */
 156    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 157       pipe_surface_reference(&i915->framebuffer.cbufs[i], NULL);
 158    }
 159    pipe_surface_reference(&i915->framebuffer.zsbuf, NULL);
 160
 161    /* unbind constant buffers */
 162    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 163       pipe_resource_reference(&i915->constants[i], NULL);
 164    }
 165
 166    FREE(i915);
 167 }
 168
 169 struct pipe_context *
 170 i915_create_context(struct pipe_screen *screen, void *priv, unsigned flags)
 171 {
 172    struct i915_context *i915;
 173
 174    i915 = CALLOC_STRUCT(i915_context);
 175    if (!i915)
 176       return NULL;
 177
 178    i915->iws = i915_screen(screen)->iws;
 179    i915->base.screen = screen;
 180    i915->base.priv = priv;
 181    i915->base.stream_uploader = u_upload_create_default(&i915->base);
 182    i915->base.const_uploader = i915->base.stream_uploader;
 183
 184    i915->base.destroy = i915_destroy;
 185
 186    if (i915_screen(screen)->debug.use_blitter)
 187       i915->base.clear = i915_clear_blitter;
 188    else
 189       i915->base.clear = i915_clear_render;
 190
 191    i915->base.draw_vbo = i915_draw_vbo;
 192
 193    /* init this before draw */
 194    slab_create(&i915->transfer_pool, sizeof(struct pipe_transfer),
 195                     16);
 196    slab_create(&i915->texture_transfer_pool, sizeof(struct i915_transfer),
 197                     16);
 198
 199    /* Batch stream debugging is a bit hacked up at the moment:
 200     */
 201    i915->batch = i915->iws->batchbuffer_create(i915->iws);
 202
 203    /*
 204     * Create drawing context and plug our rendering stage into it.
 205     */
 206    i915->draw = draw_create(&i915->base);
 207    assert(i915->draw);
 208    if (!debug_get_option_i915_no_vbuf()) {
 209       draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
 210    } else {
 211       draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
 212    }
 213
 214    i915_init_surface_functions(i915);
 215    i915_init_state_functions(i915);
 216    i915_init_flush_functions(i915);
 217    i915_init_resource_functions(i915);
 218    i915_init_query_functions(i915);
 219
 220    /* Create blitter. */
 221    i915->blitter = util_blitter_create(&i915->base);
 222    assert(i915->blitter);
 223
 224    /* must be done before installing Draw stages */
 225    util_blitter_cache_all_shaders(i915->blitter);
 226
 227    draw_install_aaline_stage(i915->draw, &i915->base);
 228    draw_install_aapoint_stage(i915->draw, &i915->base);
 229    draw_enable_point_sprites(i915->draw, TRUE);
 230
 231    i915->dirty = ~0;
 232    i915->hardware_dirty = ~0;
 233    i915->immediate_dirty = ~0;
 234    i915->dynamic_dirty = ~0;
 235    i915->static_dirty = ~0;
 236    i915->flush_dirty = 0;
 237
 238    return &i915->base;
 239 }