src/mesa/state_tracker/st_extensions.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/macros.h"
  32
  33 #include "pipe/p_context.h"
  34 #include "pipe/p_defines.h"
  35 #include "pipe/p_screen.h"
  36
  37 #include "st_context.h"
  38 #include "st_extensions.h"
  39
  40
  41 static int _min(int a, int b)
  42 {
  43    return (a < b) ? a : b;
  44 }
  45
  46 static int _max(int a, int b)
  47 {
  48    return (a > b) ? a : b;
  49 }
  50
  51 static int _clamp(int a, int min, int max)
  52 {
  53    if (a < min)
  54       return min;
  55    else if (a > max)
  56       return max;
  57    else
  58       return a;
  59 }
  60
  61
  62 /**
  63  * Query driver to get implementation limits.
  64  * Note that we have to limit/clamp against Mesa's internal limits too.
  65  */
  66 void st_init_limits(struct st_context *st)
  67 {
  68    struct pipe_screen *screen = st->pipe->screen;
  69    struct gl_constants *c = &st->ctx->Const;
  70
  71    c->MaxTextureLevels
  72       = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
  73             MAX_TEXTURE_LEVELS);
  74
  75    c->Max3DTextureLevels
  76       = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
  77             MAX_3D_TEXTURE_LEVELS);
  78
  79    c->MaxCubeTextureLevels
  80       = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
  81             MAX_CUBE_TEXTURE_LEVELS);
  82
  83    c->MaxTextureRectSize
  84       = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
  85
  86    c->MaxTextureUnits
  87       = c->MaxTextureImageUnits
  88       = c->MaxTextureCoordUnits
  89       = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS),
  90             MAX_TEXTURE_IMAGE_UNITS);
  91
  92    c->MaxDrawBuffers
  93       = _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
  94               1, MAX_DRAW_BUFFERS);
  95
  96    c->MaxLineWidth
  97       = _max(1.0, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH));
  98    c->MaxLineWidthAA
  99       = _max(1.0, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH_AA));
 100
 101    c->MaxPointSize
 102       = _max(1.0, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH));
 103    c->MaxPointSizeAA
 104       = _max(1.0, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH_AA));
 105
 106    c->MaxTextureMaxAnisotropy
 107       = _max(2.0, screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_ANISOTROPY));
 108
 109    c->MaxTextureLodBias
 110       = screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_LOD_BIAS);
 111
 112    c->MaxDrawBuffers
 113       = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
 114               1, MAX_DRAW_BUFFERS);
 115 }
 116
 117
 118 /**
 119  * XXX this needs careful review
 120  */
 121 void st_init_extensions(struct st_context *st)
 122 {
 123    struct pipe_screen *screen = st->pipe->screen;
 124    GLcontext *ctx = st->ctx;
 125
 126    /*
 127     * Extensions that are supported by all Gallium drivers:
 128     */
 129    ctx->Extensions.ARB_multisample = GL_TRUE; /* API support */
 130    ctx->Extensions.ARB_fragment_program = GL_TRUE;
 131    ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
 132    ctx->Extensions.ARB_texture_compression = GL_TRUE; /* API support only */
 133    ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
 134    ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
 135    ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
 136    ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
 137    ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE; /* XXX temp */
 138
 139    ctx->Extensions.ARB_vertex_program = GL_TRUE;
 140    ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;
 141
 142    ctx->Extensions.EXT_blend_color = GL_TRUE;
 143    ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
 144    ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
 145    ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
 146    ctx->Extensions.EXT_blend_minmax = GL_TRUE;
 147    ctx->Extensions.EXT_blend_subtract = GL_TRUE;
 148    ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
 149    ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
 150    ctx->Extensions.EXT_fog_coord = GL_TRUE;
 151    ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;
 152    ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
 153    ctx->Extensions.EXT_point_parameters = GL_TRUE;
 154    ctx->Extensions.EXT_secondary_color = GL_TRUE;
 155    ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
 156    ctx->Extensions.EXT_texture_env_add = GL_TRUE;
 157    ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
 158    ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
 159    ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
 160
 161    ctx->Extensions.NV_blend_square = GL_TRUE;
 162    ctx->Extensions.NV_texgen_reflection = GL_TRUE;
 163
 164    ctx->Extensions.SGI_color_matrix = GL_TRUE;
 165    ctx->Extensions.SGIS_generate_mipmap = GL_TRUE; /* XXX temp */
 166
 167    /*
 168     * Extensions that depend on the driver/hardware:
 169     */
 170    if (screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS) > 0) {
 171       ctx->Extensions.ARB_draw_buffers = GL_TRUE;
 172    }
 173
 174    if (screen->get_param(screen, PIPE_CAP_GLSL)) {
 175       ctx->Extensions.ARB_fragment_shader = GL_TRUE;
 176       ctx->Extensions.ARB_vertex_shader = GL_TRUE;
 177       ctx->Extensions.ARB_shader_objects = GL_TRUE;
 178       ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
 179       ctx->Extensions.ARB_shading_language_120 = GL_TRUE;
 180    }
 181
 182    if (screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES)) {
 183       ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
 184       ctx->Extensions.NV_texture_rectangle = GL_TRUE;
 185    }
 186
 187    if (screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS) > 1) {
 188       ctx->Extensions.ARB_multitexture = GL_TRUE;
 189    }
 190
 191    if (screen->get_param(screen, PIPE_CAP_TWO_SIDED_STENCIL)) {
 192       ctx->Extensions.ATI_separate_stencil = GL_TRUE;
 193    }
 194
 195    if (screen->get_param(screen, PIPE_CAP_ANISOTROPIC_FILTER)) {
 196       ctx->Extensions.EXT_texture_filter_anisotropic = GL_TRUE;
 197    }
 198
 199    if (screen->get_param(screen, PIPE_CAP_POINT_SPRITE)) {
 200       ctx->Extensions.ARB_point_sprite = GL_TRUE;
 201       ctx->Extensions.NV_point_sprite = GL_TRUE;
 202    }
 203
 204    if (screen->get_param(screen, PIPE_CAP_OCCLUSION_QUERY)) {
 205       ctx->Extensions.ARB_occlusion_query = GL_TRUE;
 206    }
 207
 208    if (screen->get_param(screen, PIPE_CAP_TEXTURE_SHADOW_MAP)) {
 209       ctx->Extensions.ARB_depth_texture = GL_TRUE;
 210       ctx->Extensions.ARB_shadow = GL_TRUE;
 211       ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
 212       /*ctx->Extensions.ARB_shadow_ambient = GL_TRUE;*/
 213    }
 214
 215    if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SRGB,
 216                                    PIPE_TEXTURE)) {
 217       ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
 218    }
 219
 220 #if 01
 221    if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
 222                                    PIPE_TEXTURE)) {
 223       ctx->Extensions.EXT_texture_compression_s3tc = GL_TRUE;
 224    }
 225 #endif
 226    if (screen->is_format_supported(screen, PIPE_FORMAT_YCBCR, PIPE_TEXTURE) ||
 227        screen->is_format_supported(screen, PIPE_FORMAT_YCBCR_REV, PIPE_TEXTURE)) {
 228       ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
 229    }
 230
 231 }