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_flush.h"
  40 #include "sp_prim_setup.h"
  41 #include "sp_region.h"
  42 #include "sp_state.h"
  43 #include "sp_surface.h"
  44 #include "sp_tex_layout.h"
  45 #include "sp_winsys.h"
  46
  47
  48
  49 /**
  50  * Return list of supported surface/texture formats.
  51  * If we find texture and drawable support differs, add a selector
  52  * parameter or another function.
  53  */
  54 static const GLuint *
  55 softpipe_supported_formats(struct pipe_context *pipe, GLuint *numFormats)
  56 {
  57    static const GLuint supported[] = {
  58       PIPE_FORMAT_U_R8_G8_B8_A8,
  59       PIPE_FORMAT_U_A8_R8_G8_B8,
  60       PIPE_FORMAT_U_R5_G6_B5,
  61       PIPE_FORMAT_U_L8,
  62       PIPE_FORMAT_U_A8,
  63       PIPE_FORMAT_U_I8,
  64       PIPE_FORMAT_U_L8_A8,
  65       PIPE_FORMAT_S_R16_G16_B16_A16,
  66       PIPE_FORMAT_YCBCR,
  67       PIPE_FORMAT_YCBCR_REV,
  68       PIPE_FORMAT_U_Z16,
  69       PIPE_FORMAT_U_Z32,
  70       PIPE_FORMAT_F_Z32,
  71       PIPE_FORMAT_S8_Z24,
  72       PIPE_FORMAT_U_S8
  73    };
  74
  75    *numFormats = sizeof(supported)/sizeof(supported[0]);
  76    return supported;
  77 }
  78
  79
  80
  81 static void map_surfaces(struct softpipe_context *sp)
  82 {
  83    struct pipe_context *pipe = &sp->pipe;
  84    GLuint i;
  85
  86    for (i = 0; i < sp->framebuffer.num_cbufs; i++) {
  87       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.cbufs[i]);      pipe->region_map(pipe, sps->surface.region);
  88    }
  89
  90    if (sp->framebuffer.zbuf) {
  91       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.zbuf);
  92       pipe->region_map(pipe, sps->surface.region);
  93    }
  94
  95    /* textures */
  96    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
  97       struct pipe_mipmap_tree *mt = sp->texture[i];
  98       if (mt) {
  99          pipe->region_map(pipe, mt->region);
 100       }
 101    }
 102
 103    /* XXX depth & stencil bufs */
 104 }
 105
 106
 107 static void unmap_surfaces(struct softpipe_context *sp)
 108 {
 109    struct pipe_context *pipe = &sp->pipe;
 110    GLuint i;
 111
 112    for (i = 0; i < sp->framebuffer.num_cbufs; i++) {
 113       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.cbufs[i]);
 114       pipe->region_unmap(pipe, sps->surface.region);
 115    }
 116
 117    if (sp->framebuffer.zbuf) {
 118       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.zbuf);
 119       pipe->region_unmap(pipe, sps->surface.region);
 120    }
 121
 122    /* textures */
 123    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 124       struct pipe_mipmap_tree *mt = sp->texture[i];
 125       if (mt) {
 126          pipe->region_unmap(pipe, mt->region);
 127       }
 128    }
 129
 130    /* XXX depth & stencil bufs */
 131 }
 132
 133
 134 static void softpipe_destroy( struct pipe_context *pipe )
 135 {
 136    struct softpipe_context *softpipe = softpipe_context( pipe );
 137
 138    draw_destroy( softpipe->draw );
 139
 140    free( softpipe );
 141 }
 142
 143
 144 static void softpipe_draw_vb( struct pipe_context *pipe,
 145                              struct vertex_buffer *VB )
 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_vb( softpipe->draw, VB );
 155    unmap_surfaces(softpipe);
 156 }
 157
 158
 159 static void
 160 softpipe_draw_vertices(struct pipe_context *pipe,
 161                        GLuint mode,
 162                        GLuint numVertex, const GLfloat *verts,
 163                        GLuint numAttribs, const GLuint attribs[])
 164 {
 165    struct softpipe_context *softpipe = softpipe_context( pipe );
 166
 167    if (softpipe->dirty)
 168       softpipe_update_derived( softpipe );
 169
 170    /* XXX move mapping/unmapping to higher/coarser level? */
 171    map_surfaces(softpipe);
 172    draw_vertices(softpipe->draw, mode, numVertex, verts, numAttribs, attribs);
 173    unmap_surfaces(softpipe);
 174 }
 175
 176
 177
 178 static void softpipe_reset_occlusion_counter(struct pipe_context *pipe)
 179 {
 180    struct softpipe_context *softpipe = softpipe_context( pipe );
 181    softpipe->occlusion_counter = 0;
 182 }
 183
 184 /* XXX pipe param should be const */
 185 static GLuint softpipe_get_occlusion_counter(struct pipe_context *pipe)
 186 {
 187    struct softpipe_context *softpipe = softpipe_context( pipe );
 188    return softpipe->occlusion_counter;
 189 }
 190
 191
 192 struct pipe_context *softpipe_create( struct softpipe_winsys *sws )
 193 {
 194    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 195
 196    softpipe->pipe.destroy = softpipe_destroy;
 197
 198    softpipe->pipe.supported_formats = softpipe_supported_formats;
 199
 200    softpipe->pipe.set_alpha_test_state = softpipe_set_alpha_test_state;
 201    softpipe->pipe.set_blend_color = softpipe_set_blend_color;
 202    softpipe->pipe.set_blend_state = softpipe_set_blend_state;
 203    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
 204    softpipe->pipe.set_clear_color_state = softpipe_set_clear_color_state;
 205    softpipe->pipe.set_depth_state = softpipe_set_depth_test_state;
 206    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 207    softpipe->pipe.set_fs_state = softpipe_set_fs_state;
 208    softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
 209    softpipe->pipe.set_sampler_state = softpipe_set_sampler_state;
 210    softpipe->pipe.set_scissor_state = softpipe_set_scissor_state;
 211    softpipe->pipe.set_setup_state = softpipe_set_setup_state;
 212    softpipe->pipe.set_stencil_state = softpipe_set_stencil_state;
 213    softpipe->pipe.set_texture_state = softpipe_set_texture_state;
 214    softpipe->pipe.set_viewport_state = softpipe_set_viewport_state;
 215    softpipe->pipe.draw_vb = softpipe_draw_vb;
 216    softpipe->pipe.draw_vertices = softpipe_draw_vertices;
 217    softpipe->pipe.clear = softpipe_clear;
 218    softpipe->pipe.flush = softpipe_flush;
 219    softpipe->pipe.finish = softpipe_finish;
 220    softpipe->pipe.reset_occlusion_counter = softpipe_reset_occlusion_counter;
 221    softpipe->pipe.get_occlusion_counter = softpipe_get_occlusion_counter;
 222
 223    softpipe->pipe.mipmap_tree_layout = softpipe_mipmap_tree_layout;
 224    softpipe->pipe.get_tex_surface = softpipe_get_tex_surface;
 225
 226    softpipe->quad.polygon_stipple = sp_quad_polygon_stipple_stage(softpipe);
 227    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
 228    softpipe->quad.alpha_test = sp_quad_alpha_test_stage(softpipe);
 229    softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
 230    softpipe->quad.stencil_test = sp_quad_stencil_test_stage(softpipe);
 231    softpipe->quad.occlusion = sp_quad_occlusion_stage(softpipe);
 232    softpipe->quad.coverage = sp_quad_coverage_stage(softpipe);
 233    softpipe->quad.bufloop = sp_quad_bufloop_stage(softpipe);
 234    softpipe->quad.blend = sp_quad_blend_stage(softpipe);
 235    softpipe->quad.colormask = sp_quad_colormask_stage(softpipe);
 236    softpipe->quad.output = sp_quad_output_stage(softpipe);
 237
 238    softpipe->winsys = sws;
 239
 240    /*
 241     * Create drawing context and plug our rendering stage into it.
 242     */
 243    softpipe->draw = draw_create();
 244    assert(softpipe->draw);
 245    draw_set_setup_stage(softpipe->draw, sp_draw_render_stage(softpipe));
 246
 247    sp_init_buffer_functions(softpipe);
 248    sp_init_region_functions(softpipe);
 249    sp_init_surface_functions(softpipe);
 250
 251    /*
 252     * XXX we could plug GL selection/feedback into the drawing pipeline
 253     * by specifying a different setup/render stage.
 254     */
 255
 256    return &softpipe->pipe;
 257 }