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