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