src/mesa/state_tracker/st_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 #include "main/imports.h"
  29 #include "main/context.h"
  30 #include "vbo/vbo.h"
  31 #include "shader/shader_api.h"
  32 #include "glapi/glapi.h"
  33 #include "st_context.h"
  34 #include "st_debug.h"
  35 #include "st_cb_accum.h"
  36 #include "st_cb_bitmap.h"
  37 #include "st_cb_blit.h"
  38 #include "st_cb_bufferobjects.h"
  39 #include "st_cb_clear.h"
  40 #include "st_cb_condrender.h"
  41 #include "st_cb_drawpixels.h"
  42 #include "st_cb_rasterpos.h"
  43 #include "st_cb_drawtex.h"
  44 #include "st_cb_eglimage.h"
  45 #include "st_cb_fbo.h"
  46 #include "st_cb_feedback.h"
  47 #include "st_cb_program.h"
  48 #include "st_cb_queryobj.h"
  49 #include "st_cb_readpixels.h"
  50 #include "st_cb_texture.h"
  51 #include "st_cb_xformfb.h"
  52 #include "st_cb_flush.h"
  53 #include "st_cb_strings.h"
  54 #include "st_atom.h"
  55 #include "st_draw.h"
  56 #include "st_extensions.h"
  57 #include "st_gen_mipmap.h"
  58 #include "st_program.h"
  59 #include "pipe/p_context.h"
  60 #include "util/u_inlines.h"
  61 #include "util/u_rect.h"
  62 #include "util/u_surface.h"
  63 #include "cso_cache/cso_context.h"
  64
  65
  66 /**
  67  * Called via ctx->Driver.UpdateState()
  68  */
  69 void st_invalidate_state(GLcontext * ctx, GLuint new_state)
  70 {
  71    struct st_context *st = st_context(ctx);
  72
  73    st->dirty.mesa |= new_state;
  74    st->dirty.st |= ST_NEW_MESA;
  75
  76    /* This is the only core Mesa module we depend upon.
  77     * No longer use swrast, swsetup, tnl.
  78     */
  79    _vbo_InvalidateState(ctx, new_state);
  80 }
  81
  82
  83 /**
  84  * Check for multisample env var override.
  85  */
  86 int
  87 st_get_msaa(void)
  88 {
  89    const char *msaa = _mesa_getenv("__GL_FSAA_MODE");
  90    if (msaa)
  91       return atoi(msaa);
  92    return 0;
  93 }
  94
  95
  96 static struct st_context *
  97 st_create_context_priv( GLcontext *ctx, struct pipe_context *pipe )
  98 {
  99    uint i;
 100    struct st_context *st = ST_CALLOC_STRUCT( st_context );
 101
 102    ctx->st = st;
 103
 104    st->ctx = ctx;
 105    st->pipe = pipe;
 106
 107    /* XXX: this is one-off, per-screen init: */
 108    st_debug_init();
 109
 110    /* state tracker needs the VBO module */
 111    _vbo_CreateContext(ctx);
 112
 113    st->dirty.mesa = ~0;
 114    st->dirty.st = ~0;
 115
 116    st->cso_context = cso_create_context(pipe);
 117
 118    st_init_atoms( st );
 119    st_init_bitmap(st);
 120    st_init_clear(st);
 121    st_init_draw( st );
 122    st_init_generate_mipmap(st);
 123    st_init_blit(st);
 124
 125    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 126       st->state.sampler_list[i] = &st->state.samplers[i];
 127
 128    for (i = 0; i < 3; i++) {
 129       memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
 130       st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
 131       st->velems_util_draw[i].instance_divisor = 0;
 132       st->velems_util_draw[i].vertex_buffer_index = 0;
 133       st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 134    }
 135
 136    /* we want all vertex data to be placed in buffer objects */
 137    vbo_use_buffer_objects(ctx);
 138
 139    /* Need these flags:
 140     */
 141    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 142
 143    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 144
 145    st->pixel_xfer.cache = _mesa_new_program_cache();
 146
 147    st->force_msaa = st_get_msaa();
 148
 149    /* GL limits and extensions */
 150    st_init_limits(st);
 151    st_init_extensions(st);
 152
 153    return st;
 154 }
 155
 156
 157 struct st_context *st_create_context(struct pipe_context *pipe,
 158                                      const __GLcontextModes *visual,
 159                                      struct st_context *share)
 160 {
 161    GLcontext *ctx;
 162    GLcontext *shareCtx = share ? share->ctx : NULL;
 163    struct dd_function_table funcs;
 164
 165    memset(&funcs, 0, sizeof(funcs));
 166    st_init_driver_functions(&funcs);
 167
 168 #if FEATURE_GL
 169    ctx = _mesa_create_context_for_api(API_OPENGL,
 170                                       visual, shareCtx, &funcs, NULL);
 171 #elif FEATURE_ES1
 172    ctx = _mesa_create_context_for_api(API_OPENGLES,
 173                                       visual, shareCtx, &funcs, NULL);
 174 #elif FEATURE_ES2
 175    ctx = _mesa_create_context_for_api(API_OPENGLES2,
 176                                       visual, shareCtx, &funcs, NULL);
 177 #endif
 178
 179    /* XXX: need a capability bit in gallium to query if the pipe
 180     * driver prefers DP4 or MUL/MAD for vertex transformation.
 181     */
 182    if (debug_get_bool_option("MESA_MVP_DP4", FALSE))
 183       _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
 184
 185    return st_create_context_priv(ctx, pipe);
 186 }
 187
 188
 189 static void st_destroy_context_priv( struct st_context *st )
 190 {
 191    uint i;
 192
 193    st_destroy_atoms( st );
 194    st_destroy_draw( st );
 195    st_destroy_generate_mipmap(st);
 196    st_destroy_blit(st);
 197    st_destroy_clear(st);
 198    st_destroy_bitmap(st);
 199    st_destroy_drawpix(st);
 200    st_destroy_drawtex(st);
 201
 202    for (i = 0; i < Elements(st->state.sampler_views); i++) {
 203       pipe_sampler_view_reference(&st->state.sampler_views[i], NULL);
 204    }
 205
 206    for (i = 0; i < Elements(st->state.constants); i++) {
 207       if (st->state.constants[i]) {
 208          pipe_resource_reference(&st->state.constants[i], NULL);
 209       }
 210    }
 211
 212    if (st->default_texture) {
 213       st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
 214       st->default_texture = NULL;
 215    }
 216
 217    free( st );
 218 }
 219
 220
 221 void st_destroy_context( struct st_context *st )
 222 {
 223    struct pipe_context *pipe = st->pipe;
 224    struct cso_context *cso = st->cso_context;
 225    GLcontext *ctx = st->ctx;
 226    GLuint i;
 227
 228    /* need to unbind and destroy CSO objects before anything else */
 229    cso_release_all(st->cso_context);
 230
 231    st_reference_fragprog(st, &st->fp, NULL);
 232    st_reference_vertprog(st, &st->vp, NULL);
 233
 234    /* release framebuffer surfaces */
 235    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 236       pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
 237    }
 238    pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
 239
 240    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 241
 242    _vbo_DestroyContext(st->ctx);
 243
 244    _mesa_free_context_data(ctx);
 245
 246    st_destroy_context_priv(st);
 247
 248    cso_destroy_context(cso);
 249
 250    pipe->destroy( pipe );
 251
 252    free(ctx);
 253 }
 254
 255
 256 void st_init_driver_functions(struct dd_function_table *functions)
 257 {
 258    _mesa_init_glsl_driver_functions(functions);
 259
 260    st_init_accum_functions(functions);
 261    st_init_blit_functions(functions);
 262    st_init_bufferobject_functions(functions);
 263    st_init_clear_functions(functions);
 264    st_init_bitmap_functions(functions);
 265    st_init_drawpixels_functions(functions);
 266    st_init_rasterpos_functions(functions);
 267
 268    st_init_drawtex_functions(functions);
 269
 270    st_init_eglimage_functions(functions);
 271
 272    st_init_fbo_functions(functions);
 273    st_init_feedback_functions(functions);
 274    st_init_program_functions(functions);
 275    st_init_query_functions(functions);
 276    st_init_cond_render_functions(functions);
 277    st_init_readpixels_functions(functions);
 278    st_init_texture_functions(functions);
 279    st_init_flush_functions(functions);
 280    st_init_string_functions(functions);
 281
 282    st_init_xformfb_functions(functions);
 283
 284    functions->UpdateState = st_invalidate_state;
 285 }