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 "main/extensions.h"
  31 #include "main/matrix.h"
  32 #include "main/buffers.h"
  33 #include "vbo/vbo.h"
  34 #include "shader/shader_api.h"
  35 #include "st_public.h"
  36 #include "st_context.h"
  37 #include "st_cb_accum.h"
  38 #include "st_cb_bufferobjects.h"
  39 #include "st_cb_clear.h"
  40 #include "st_cb_drawpixels.h"
  41 #include "st_cb_fbo.h"
  42 #include "st_cb_feedback.h"
  43 #include "st_cb_queryobj.h"
  44 #include "st_cb_rasterpos.h"
  45 #include "st_cb_readpixels.h"
  46 #include "st_cb_texture.h"
  47 #include "st_cb_flush.h"
  48 #include "st_cb_strings.h"
  49 #include "st_atom.h"
  50 #include "st_draw.h"
  51 #include "st_extensions.h"
  52 #include "st_program.h"
  53 #include "pipe/p_context.h"
  54 #include "pipe/p_winsys.h"
  55 #include "pipe/p_inlines.h"
  56 #include "pipe/draw/draw_context.h"
  57 #include "pipe/cso_cache/cso_cache.h"
  58
  59
  60 /**
  61  * Called via ctx->Driver.UpdateState()
  62  */
  63 void st_invalidate_state(GLcontext * ctx, GLuint new_state)
  64 {
  65    struct st_context *st = st_context(ctx);
  66
  67    st->dirty.mesa |= new_state;
  68    st->dirty.st |= ST_NEW_MESA;
  69
  70    /* This is the only core Mesa module we depend upon.
  71     * No longer use swrast, swsetup, tnl.
  72     */
  73    _vbo_InvalidateState(ctx, new_state);
  74 }
  75
  76
  77 static struct st_context *
  78 st_create_context_priv( GLcontext *ctx, struct pipe_context *pipe )
  79 {
  80    struct st_context *st = CALLOC_STRUCT( st_context );
  81
  82    ctx->st = st;
  83
  84    st->ctx = ctx;
  85    st->pipe = pipe;
  86
  87    /* state tracker needs the VBO module */
  88    _vbo_CreateContext(ctx);
  89
  90    st->draw = draw_create(); /* for selection/feedback */
  91
  92    st->dirty.mesa = ~0;
  93    st->dirty.st = ~0;
  94
  95    st->cache = cso_cache_create();
  96
  97    st_init_atoms( st );
  98    st_init_draw( st );
  99
 100    /* we want all vertex data to be placed in buffer objects */
 101    vbo_use_buffer_objects(ctx);
 102
 103    /* Need these flags:
 104     */
 105    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 106    st->ctx->FragmentProgram._UseTexEnvProgram = GL_TRUE;
 107
 108    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 109
 110    st->haveFramebufferSurfaces = GL_TRUE;
 111
 112    st->pixel_xfer.cache = _mesa_new_program_cache();
 113
 114    /* GL limits and extensions */
 115    st_init_limits(st);
 116    st_init_extensions(st);
 117
 118    return st;
 119 }
 120
 121
 122 struct st_context *st_create_context(struct pipe_context *pipe,
 123                                      const __GLcontextModes *visual,
 124                                      struct st_context *share)
 125 {
 126    GLcontext *ctx;
 127    GLcontext *shareCtx = share ? share->ctx : NULL;
 128    struct dd_function_table funcs;
 129
 130    memset(&funcs, 0, sizeof(funcs));
 131    st_init_driver_functions(&funcs);
 132
 133    ctx = _mesa_create_context(visual, shareCtx, &funcs, NULL);
 134
 135    return st_create_context_priv(ctx, pipe);
 136 }
 137
 138
 139 static void st_destroy_context_priv( struct st_context *st )
 140 {
 141    struct pipe_winsys *ws = st->pipe->winsys;
 142    uint i;
 143
 144    draw_destroy(st->draw);
 145    st_destroy_atoms( st );
 146    st_destroy_draw( st );
 147
 148    _vbo_DestroyContext(st->ctx);
 149
 150    cso_cache_delete( st->cache );
 151
 152    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 153
 154    for (i = 0; i < Elements(st->state.constants); i++) {
 155       if (st->state.constants[i].buffer) {
 156          pipe_buffer_reference(ws, &st->state.constants[i].buffer, NULL);
 157       }
 158    }
 159
 160    st->pipe->destroy( st->pipe );
 161    free( st );
 162 }
 163
 164
 165 void st_destroy_context( struct st_context *st )
 166 {
 167    GLcontext *ctx = st->ctx;
 168    _mesa_free_context_data(ctx);
 169    st_destroy_context_priv(st);
 170    free(ctx);
 171 }
 172
 173
 174 void st_make_current(struct st_context *st,
 175                      struct st_framebuffer *draw,
 176                      struct st_framebuffer *read)
 177 {
 178    if (st) {
 179       GLboolean firstTime = st->ctx->FirstTimeCurrent;
 180       _mesa_make_current(st->ctx, &draw->Base, &read->Base);
 181       /* Need to initialize viewport here since draw->Base->Width/Height
 182        * will still be zero at this point.
 183        * This could be improved, but would require rather extensive work
 184        * elsewhere (allocate rb surface storage sooner)
 185        */
 186       if (firstTime) {
 187          GLuint w = draw->InitWidth, h = draw->InitHeight;
 188          _mesa_set_viewport(st->ctx, 0, 0, w, h);
 189          _mesa_set_scissor(st->ctx, 0, 0, w, h);
 190
 191       }
 192    }
 193    else {
 194       _mesa_make_current(NULL, NULL, NULL);
 195    }
 196 }
 197
 198
 199 void st_copy_context_state(struct st_context *dst,
 200                            struct st_context *src,
 201                            uint mask)
 202 {
 203    _mesa_copy_context(dst->ctx, src->ctx, mask);
 204 }
 205
 206
 207 void st_init_driver_functions(struct dd_function_table *functions)
 208 {
 209    _mesa_init_glsl_driver_functions(functions);
 210
 211    st_init_accum_functions(functions);
 212    st_init_bufferobject_functions(functions);
 213    st_init_clear_functions(functions);
 214    st_init_drawpixels_functions(functions);
 215    st_init_fbo_functions(functions);
 216    st_init_feedback_functions(functions);
 217    st_init_program_functions(functions);
 218    st_init_query_functions(functions);
 219    st_init_rasterpos_functions(functions);
 220    st_init_readpixels_functions(functions);
 221    st_init_texture_functions(functions);
 222    st_init_flush_functions(functions);
 223    st_init_string_functions(functions);
 224
 225    functions->UpdateState = st_invalidate_state;
 226 }