src/mesa/pipe/softpipe/sp_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 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 /* Author:
  29  *    Keith Whitwell <keith@tungstengraphics.com>
  30  */
  31
  32 #include "main/imports.h"
  33 #include "main/macros.h"
  34 #include "pipe/draw/draw_context.h"
  35 #include "pipe/p_defines.h"
  36 #include "sp_buffer.h"
  37 #include "sp_clear.h"
  38 #include "sp_context.h"
  39 #include "sp_prim_setup.h"
  40 #include "sp_region.h"
  41 #include "sp_state.h"
  42 #include "sp_surface.h"
  43 #include "sp_tex_layout.h"
  44 #include "sp_winsys.h"
  45
  46
  47
  48 /**
  49  * Return list of supported surface/texture formats.
  50  * If we find texture and drawable support differs, add a selector
  51  * parameter or another function.
  52  */
  53 static const GLuint *
  54 softpipe_supported_formats(struct pipe_context *pipe, GLuint *numFormats)
  55 {
  56    static const GLuint supported[] = {
  57       PIPE_FORMAT_U_R8_G8_B8_A8,
  58       PIPE_FORMAT_U_A8_R8_G8_B8,
  59       PIPE_FORMAT_U_R5_G6_B5,
  60       PIPE_FORMAT_U_L8,
  61       PIPE_FORMAT_U_A8,
  62       PIPE_FORMAT_U_I8,
  63       PIPE_FORMAT_U_L8_A8,
  64       PIPE_FORMAT_S_R16_G16_B16_A16,
  65       PIPE_FORMAT_YCBCR,
  66       PIPE_FORMAT_YCBCR_REV,
  67       PIPE_FORMAT_U_Z16,
  68       PIPE_FORMAT_U_Z32,
  69       PIPE_FORMAT_F_Z32,
  70       PIPE_FORMAT_S8_Z24,
  71       PIPE_FORMAT_U_S8
  72    };
  73
  74    *numFormats = sizeof(supported)/sizeof(supported[0]);
  75    return supported;
  76 }
  77
  78
  79
  80 static void map_surfaces(struct softpipe_context *sp)
  81 {
  82    struct pipe_context *pipe = &sp->pipe;
  83    GLuint i;
  84
  85    for (i = 0; i < sp->framebuffer.num_cbufs; i++) {
  86       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.cbufs[i]);      pipe->region_map(pipe, sps->surface.region);
  87    }
  88
  89    if (sp->framebuffer.zbuf) {
  90       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.zbuf);
  91       pipe->region_map(pipe, sps->surface.region);
  92    }
  93
  94    /* XXX depth & stencil bufs */
  95 }
  96
  97
  98 static void unmap_surfaces(struct softpipe_context *sp)
  99 {
 100    struct pipe_context *pipe = &sp->pipe;
 101    GLuint i;
 102
 103    for (i = 0; i < sp->framebuffer.num_cbufs; i++) {
 104       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.cbufs[i]);
 105       pipe->region_unmap(pipe, sps->surface.region);
 106    }
 107
 108    if (sp->framebuffer.zbuf) {
 109       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.zbuf);
 110       pipe->region_unmap(pipe, sps->surface.region);
 111    }
 112    /* XXX depth & stencil bufs */
 113 }
 114
 115
 116 static void softpipe_destroy( struct pipe_context *pipe )
 117 {
 118    struct softpipe_context *softpipe = softpipe_context( pipe );
 119
 120    draw_destroy( softpipe->draw );
 121
 122    free( softpipe );
 123 }
 124
 125
 126 static void softpipe_draw_vb( struct pipe_context *pipe,
 127                              struct vertex_buffer *VB )
 128 {
 129    struct softpipe_context *softpipe = softpipe_context( pipe );
 130
 131    if (softpipe->dirty)
 132       softpipe_update_derived( softpipe );
 133
 134    /* XXX move mapping/unmapping to higher/coarser level? */
 135    map_surfaces(softpipe);
 136    draw_vb( softpipe->draw, VB );
 137    unmap_surfaces(softpipe);
 138 }
 139
 140
 141 static void
 142 softpipe_draw_vertices(struct pipe_context *pipe,
 143                        GLuint mode,
 144                        GLuint numVertex, const GLfloat *verts,
 145                        GLuint numAttribs, const GLuint attribs[])
 146 {
 147    struct softpipe_context *softpipe = softpipe_context( pipe );
 148
 149    if (softpipe->dirty)
 150       softpipe_update_derived( softpipe );
 151
 152    /* XXX move mapping/unmapping to higher/coarser level? */
 153    map_surfaces(softpipe);
 154    draw_vertices(softpipe->draw, mode, numVertex, verts, numAttribs, attribs);
 155    unmap_surfaces(softpipe);
 156 }
 157
 158
 159
 160 static void softpipe_reset_occlusion_counter(struct pipe_context *pipe)
 161 {
 162    struct softpipe_context *softpipe = softpipe_context( pipe );
 163    softpipe->occlusion_counter = 0;
 164 }
 165
 166 /* XXX pipe param should be const */
 167 static GLuint softpipe_get_occlusion_counter(struct pipe_context *pipe)
 168 {
 169    struct softpipe_context *softpipe = softpipe_context( pipe );
 170    return softpipe->occlusion_counter;
 171 }
 172
 173
 174 struct pipe_context *softpipe_create( struct softpipe_winsys *sws )
 175 {
 176    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 177
 178    softpipe->pipe.destroy = softpipe_destroy;
 179
 180    softpipe->pipe.supported_formats = softpipe_supported_formats;
 181
 182    softpipe->pipe.set_alpha_test_state = softpipe_set_alpha_test_state;
 183    softpipe->pipe.set_blend_color = softpipe_set_blend_color;
 184    softpipe->pipe.set_blend_state = softpipe_set_blend_state;
 185    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
 186    softpipe->pipe.set_clear_color_state = softpipe_set_clear_color_state;
 187    softpipe->pipe.set_depth_state = softpipe_set_depth_test_state;
 188    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 189    softpipe->pipe.set_fs_state = softpipe_set_fs_state;
 190    softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
 191    softpipe->pipe.set_sampler_state = softpipe_set_sampler_state;
 192    softpipe->pipe.set_scissor_state = softpipe_set_scissor_state;
 193    softpipe->pipe.set_setup_state = softpipe_set_setup_state;
 194    softpipe->pipe.set_stencil_state = softpipe_set_stencil_state;
 195    softpipe->pipe.set_texture_state = softpipe_set_texture_state;
 196    softpipe->pipe.set_viewport_state = softpipe_set_viewport_state;
 197    softpipe->pipe.draw_vb = softpipe_draw_vb;
 198    softpipe->pipe.draw_vertices = softpipe_draw_vertices;
 199    softpipe->pipe.clear = softpipe_clear;
 200    softpipe->pipe.reset_occlusion_counter = softpipe_reset_occlusion_counter;
 201    softpipe->pipe.get_occlusion_counter = softpipe_get_occlusion_counter;
 202
 203    softpipe->pipe.mipmap_tree_layout = softpipe_mipmap_tree_layout;
 204
 205    softpipe->quad.polygon_stipple = sp_quad_polygon_stipple_stage(softpipe);
 206    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
 207    softpipe->quad.alpha_test = sp_quad_alpha_test_stage(softpipe);
 208    softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
 209    softpipe->quad.stencil_test = sp_quad_stencil_test_stage(softpipe);
 210    softpipe->quad.occlusion = sp_quad_occlusion_stage(softpipe);
 211    softpipe->quad.coverage = sp_quad_coverage_stage(softpipe);
 212    softpipe->quad.bufloop = sp_quad_bufloop_stage(softpipe);
 213    softpipe->quad.blend = sp_quad_blend_stage(softpipe);
 214    softpipe->quad.colormask = sp_quad_colormask_stage(softpipe);
 215    softpipe->quad.output = sp_quad_output_stage(softpipe);
 216
 217    softpipe->winsys = sws;
 218
 219    /*
 220     * Create drawing context and plug our rendering stage into it.
 221     */
 222    softpipe->draw = draw_create();
 223    assert(softpipe->draw);
 224    draw_set_setup_stage(softpipe->draw, sp_draw_render_stage(softpipe));
 225
 226    sp_init_buffer_functions(softpipe);
 227    sp_init_region_functions(softpipe);
 228    sp_init_surface_functions(softpipe);
 229
 230    /*
 231     * XXX we could plug GL selection/feedback into the drawing pipeline
 232     * by specifying a different setup/render stage.
 233     */
 234
 235    return &softpipe->pipe;
 236 }