src/gallium/winsys/drm/intel/egl/intel_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 "i915simple/i915_screen.h"
  29
  30 #include "intel_device.h"
  31 #include "intel_context.h"
  32 #include "intel_batchbuffer.h"
  33
  34 #include "state_tracker/st_public.h"
  35 #include "pipe/p_defines.h"
  36 #include "pipe/p_context.h"
  37 #include "intel_egl.h"
  38 #include "utils.h"
  39
  40 #ifdef DEBUG
  41 int __intel_debug = 0;
  42 #endif
  43
  44
  45 #define need_GL_ARB_multisample
  46 #define need_GL_ARB_point_parameters
  47 #define need_GL_ARB_texture_compression
  48 #define need_GL_ARB_vertex_buffer_object
  49 #define need_GL_ARB_vertex_program
  50 #define need_GL_ARB_window_pos
  51 #define need_GL_EXT_blend_color
  52 #define need_GL_EXT_blend_equation_separate
  53 #define need_GL_EXT_blend_func_separate
  54 #define need_GL_EXT_blend_minmax
  55 #define need_GL_EXT_cull_vertex
  56 #define need_GL_EXT_fog_coord
  57 #define need_GL_EXT_framebuffer_object
  58 #define need_GL_EXT_multi_draw_arrays
  59 #define need_GL_EXT_secondary_color
  60 #define need_GL_NV_vertex_program
  61 #include "extension_helper.h"
  62
  63
  64 /**
  65  * Extension strings exported by the intel driver.
  66  *
  67  * \note
  68  * It appears that ARB_texture_env_crossbar has "disappeared" compared to the
  69  * old i830-specific driver.
  70  */
  71 const struct dri_extension card_extensions[] = {
  72         {"GL_ARB_multisample", GL_ARB_multisample_functions},
  73         {"GL_ARB_multitexture", NULL},
  74         {"GL_ARB_point_parameters", GL_ARB_point_parameters_functions},
  75         {"GL_ARB_texture_border_clamp", NULL},
  76         {"GL_ARB_texture_compression", GL_ARB_texture_compression_functions},
  77         {"GL_ARB_texture_cube_map", NULL},
  78         {"GL_ARB_texture_env_add", NULL},
  79         {"GL_ARB_texture_env_combine", NULL},
  80         {"GL_ARB_texture_env_dot3", NULL},
  81         {"GL_ARB_texture_mirrored_repeat", NULL},
  82         {"GL_ARB_texture_rectangle", NULL},
  83         {"GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions},
  84         {"GL_ARB_pixel_buffer_object", NULL},
  85         {"GL_ARB_vertex_program", GL_ARB_vertex_program_functions},
  86         {"GL_ARB_window_pos", GL_ARB_window_pos_functions},
  87         {"GL_EXT_blend_color", GL_EXT_blend_color_functions},
  88         {"GL_EXT_blend_equation_separate", GL_EXT_blend_equation_separate_functions},
  89         {"GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions},
  90         {"GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions},
  91         {"GL_EXT_blend_subtract", NULL},
  92         {"GL_EXT_cull_vertex", GL_EXT_cull_vertex_functions},
  93         {"GL_EXT_fog_coord", GL_EXT_fog_coord_functions},
  94         {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions},
  95         {"GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions},
  96         {"GL_EXT_packed_depth_stencil", NULL},
  97         {"GL_EXT_pixel_buffer_object", NULL},
  98         {"GL_EXT_secondary_color", GL_EXT_secondary_color_functions},
  99         {"GL_EXT_stencil_wrap", NULL},
 100         {"GL_EXT_texture_edge_clamp", NULL},
 101         {"GL_EXT_texture_env_combine", NULL},
 102         {"GL_EXT_texture_env_dot3", NULL},
 103         {"GL_EXT_texture_filter_anisotropic", NULL},
 104         {"GL_EXT_texture_lod_bias", NULL},
 105         {"GL_3DFX_texture_compression_FXT1", NULL},
 106         {"GL_APPLE_client_storage", NULL},
 107         {"GL_MESA_pack_invert", NULL},
 108         {"GL_MESA_ycbcr_texture", NULL},
 109         {"GL_NV_blend_square", NULL},
 110         {"GL_NV_vertex_program", GL_NV_vertex_program_functions},
 111         {"GL_NV_vertex_program1_1", NULL},
 112         {"GL_SGIS_generate_mipmap", NULL },
 113         {NULL, NULL}
 114 };
 115
 116
 117 /*
 118  * Hardware lock functions.
 119  * Doesn't do anything in EGL
 120  */
 121
 122 static void
 123 intel_lock_hardware(struct intel_be_context *context)
 124 {
 125         (void)context;
 126 }
 127
 128 static void
 129 intel_unlock_hardware(struct intel_be_context *context)
 130 {
 131         (void)context;
 132 }
 133
 134 static boolean
 135 intel_locked_hardware(struct intel_be_context *context)
 136 {
 137         (void)context;
 138         return FALSE;
 139 }
 140
 141
 142 /*
 143  * Misc functions.
 144  */
 145
 146 int
 147 intel_create_context(struct egl_drm_context *egl_context, const __GLcontextModes *visual, void *sharedContextPrivate)
 148 {
 149         struct intel_context *intel = CALLOC_STRUCT(intel_context);
 150         struct intel_device *device = (struct intel_device *)egl_context->device->priv;
 151         struct pipe_context *pipe;
 152         struct st_context *st_share = NULL;
 153
 154         egl_context->priv = intel;
 155
 156         intel->intel_device = device;
 157         intel->egl_context = egl_context;
 158         intel->egl_device = egl_context->device;
 159
 160         intel->base.hardware_lock = intel_lock_hardware;
 161         intel->base.hardware_unlock = intel_unlock_hardware;
 162         intel->base.hardware_locked = intel_locked_hardware;
 163
 164         intel_be_init_context(&intel->base, &device->base);
 165
 166 #if 0
 167         pipe = intel_create_softpipe(intel, screen->winsys);
 168 #else
 169         pipe = i915_create_context(device->pipe, &device->base.base, &intel->base.base);
 170 #endif
 171
 172         pipe->priv = intel;
 173
 174         intel->st = st_create_context(pipe, visual, st_share);
 175
 176         device->dummy = intel;
 177
 178         return TRUE;
 179 }
 180
 181 int
 182 intel_destroy_context(struct egl_drm_context *egl_context)
 183 {
 184         struct intel_context *intel = egl_context->priv;
 185
 186         if (intel->intel_device->dummy == intel)
 187                 intel->intel_device->dummy = NULL;
 188
 189         st_destroy_context(intel->st);
 190         intel_be_destroy_context(&intel->base);
 191         free(intel);
 192         return TRUE;
 193 }
 194
 195 void
 196 intel_make_current(struct egl_drm_context *context, struct egl_drm_drawable *draw, struct egl_drm_drawable *read)
 197 {
 198         if (context) {
 199                 struct intel_context *intel = (struct intel_context *)context->priv;
 200                 struct intel_framebuffer *draw_fb = (struct intel_framebuffer *)draw->priv;
 201                 struct intel_framebuffer *read_fb = (struct intel_framebuffer *)read->priv;
 202
 203                 assert(draw_fb->stfb);
 204                 assert(read_fb->stfb);
 205
 206                 st_make_current(intel->st, draw_fb->stfb, read_fb->stfb);
 207
 208                 intel->egl_drawable = draw;
 209
 210                 st_resize_framebuffer(draw_fb->stfb, draw->w, draw->h);
 211
 212                 if (draw != read)
 213                         st_resize_framebuffer(read_fb->stfb, read->w, read->h);
 214
 215         } else {
 216                 st_make_current(NULL, NULL, NULL);
 217         }
 218 }
 219
 220 void
 221 intel_bind_frontbuffer(struct egl_drm_drawable *draw, struct egl_drm_frontbuffer *front)
 222 {
 223         struct intel_device *device = (struct intel_device *)draw->device->priv;
 224         struct intel_framebuffer *draw_fb = (struct intel_framebuffer *)draw->priv;
 225
 226         if (draw_fb->front_buffer)
 227                 driBOUnReference(draw_fb->front_buffer);
 228
 229         draw_fb->front_buffer = NULL;
 230         draw_fb->front = NULL;
 231
 232         /* to unbind just call this function with front == NULL */
 233         if (!front)
 234                 return;
 235
 236         draw_fb->front = front;
 237
 238         driGenBuffers(device->base.staticPool, "front", 1, &draw_fb->front_buffer, 0, 0, 0);
 239         driBOSetReferenced(draw_fb->front_buffer, front->handle);
 240
 241         st_resize_framebuffer(draw_fb->stfb, draw->w, draw->h);
 242 }