mesa » state_tracker

st_extensions.c File Reference

Include dependency graph for st_extensions.c:

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Functions

static int _min (int a, int b)
static float _maxf (float a, float b)
static int _clamp (int a, int min, int max)
void st_init_limits (struct st_context *st)
 Query driver to get implementation limits.
void st_init_extensions (struct st_context *st)
 XXX this needs careful review.

Function Documentation

static int _clamp ( int  a,
int  min,
int  max 
) [static]

Definition at line 51 of file st_extensions.c.

00052 {
00053    if (a < min)
00054       return min;
00055    else if (a > max)
00056       return max;
00057    else
00058       return a;
00059 }

static float _maxf ( float  a,
float  b 
) [static]

Definition at line 46 of file st_extensions.c.

00047 {
00048    return (a > b) ? a : b;
00049 }

static int _min ( int  a,
int  b 
) [static]

Definition at line 41 of file st_extensions.c.

00042 {
00043    return (a < b) ? a : b;
00044 }

void st_init_extensions ( struct st_context *  st  ) 

XXX this needs careful review.

Definition at line 121 of file st_extensions.c.

References st_context::ctx, pipe_screen::get_param, pipe_screen::is_format_supported, st_context::pipe, PIPE_CAP_ANISOTROPIC_FILTER, PIPE_CAP_GLSL, PIPE_CAP_MAX_RENDER_TARGETS, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS, PIPE_CAP_NPOT_TEXTURES, PIPE_CAP_OCCLUSION_QUERY, PIPE_CAP_POINT_SPRITE, PIPE_CAP_TEXTURE_MIRROR_CLAMP, PIPE_CAP_TEXTURE_MIRROR_REPEAT, PIPE_CAP_TEXTURE_SHADOW_MAP, PIPE_CAP_TWO_SIDED_STENCIL, PIPE_FORMAT_DXT5_RGBA, PIPE_FORMAT_R8G8B8A8_SRGB, PIPE_FORMAT_S8Z24_UNORM, PIPE_FORMAT_YCBCR, PIPE_FORMAT_YCBCR_REV, PIPE_FORMAT_Z24S8_UNORM, PIPE_TEXTURE_2D, PIPE_TEXTURE_USAGE_DEPTH_STENCIL, PIPE_TEXTURE_USAGE_SAMPLER, and pipe_context::screen.

00122 {
00123    struct pipe_screen *screen = st->pipe->screen;
00124    GLcontext *ctx = st->ctx;
00125 
00126    /*
00127     * Extensions that are supported by all Gallium drivers:
00128     */
00129    ctx->Extensions.ARB_multisample = GL_TRUE; /* API support */
00130    ctx->Extensions.ARB_fragment_program = GL_TRUE;
00131    ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
00132    ctx->Extensions.ARB_texture_compression = GL_TRUE; /* API support only */
00133    ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
00134    ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
00135    ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
00136    ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
00137    ctx->Extensions.ARB_vertex_program = GL_TRUE;
00138    ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;
00139 
00140    ctx->Extensions.EXT_blend_color = GL_TRUE;
00141    ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
00142    ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
00143    ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
00144    ctx->Extensions.EXT_blend_minmax = GL_TRUE;
00145    ctx->Extensions.EXT_blend_subtract = GL_TRUE;
00146    ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
00147    ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
00148    ctx->Extensions.EXT_fog_coord = GL_TRUE;
00149    ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;
00150    ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
00151    ctx->Extensions.EXT_point_parameters = GL_TRUE;
00152    ctx->Extensions.EXT_secondary_color = GL_TRUE;
00153    ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
00154    ctx->Extensions.EXT_texture_env_add = GL_TRUE;
00155    ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
00156    ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
00157    ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
00158 
00159    ctx->Extensions.NV_blend_square = GL_TRUE;
00160    ctx->Extensions.NV_texgen_reflection = GL_TRUE;
00161 
00162    ctx->Extensions.SGI_color_matrix = GL_TRUE;
00163    ctx->Extensions.SGIS_generate_mipmap = GL_TRUE; /* XXX temp */
00164 
00165    /*
00166     * Extensions that depend on the driver/hardware:
00167     */
00168    if (screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS) > 0) {
00169       ctx->Extensions.ARB_draw_buffers = GL_TRUE;
00170    }
00171 
00172    if (screen->get_param(screen, PIPE_CAP_GLSL)) {
00173       ctx->Extensions.ARB_fragment_shader = GL_TRUE;
00174       ctx->Extensions.ARB_vertex_shader = GL_TRUE;
00175       ctx->Extensions.ARB_shader_objects = GL_TRUE;
00176       ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
00177       ctx->Extensions.ARB_shading_language_120 = GL_TRUE;
00178    }
00179 
00180    if (screen->get_param(screen, PIPE_CAP_TEXTURE_MIRROR_REPEAT) > 0) {
00181       ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
00182    }
00183 
00184    if (screen->get_param(screen, PIPE_CAP_TEXTURE_MIRROR_CLAMP) > 0) {
00185       ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE;
00186    }
00187 
00188    if (screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES)) {
00189       ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
00190       ctx->Extensions.NV_texture_rectangle = GL_TRUE;
00191    }
00192 
00193    if (screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS) > 1) {
00194       ctx->Extensions.ARB_multitexture = GL_TRUE;
00195    }
00196 
00197    if (screen->get_param(screen, PIPE_CAP_TWO_SIDED_STENCIL)) {
00198       ctx->Extensions.ATI_separate_stencil = GL_TRUE;
00199    }
00200 
00201    if (screen->get_param(screen, PIPE_CAP_ANISOTROPIC_FILTER)) {
00202       ctx->Extensions.EXT_texture_filter_anisotropic = GL_TRUE;
00203    }
00204 
00205    if (screen->get_param(screen, PIPE_CAP_POINT_SPRITE)) {
00206       ctx->Extensions.ARB_point_sprite = GL_TRUE;
00207       ctx->Extensions.NV_point_sprite = GL_TRUE;
00208    }
00209 
00210    if (screen->get_param(screen, PIPE_CAP_OCCLUSION_QUERY)) {
00211       ctx->Extensions.ARB_occlusion_query = GL_TRUE;
00212    }
00213 
00214    if (screen->get_param(screen, PIPE_CAP_TEXTURE_SHADOW_MAP)) {
00215       ctx->Extensions.ARB_depth_texture = GL_TRUE;
00216       ctx->Extensions.ARB_shadow = GL_TRUE;
00217       ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
00218       /*ctx->Extensions.ARB_shadow_ambient = GL_TRUE;*/
00219    }
00220 
00221    /* GL_EXT_packed_depth_stencil requires both the ability to render to
00222     * a depth/stencil buffer and texture from depth/stencil source.
00223     */
00224    if (screen->is_format_supported(screen, PIPE_FORMAT_Z24S8_UNORM,
00225                                    PIPE_TEXTURE_2D, 
00226                                    PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0) &&
00227        screen->is_format_supported(screen, PIPE_FORMAT_Z24S8_UNORM,
00228                                    PIPE_TEXTURE_2D, 
00229                                    PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
00230       ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
00231    }
00232    else if (screen->is_format_supported(screen, PIPE_FORMAT_S8Z24_UNORM,
00233                                         PIPE_TEXTURE_2D, 
00234                                         PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0) &&
00235             screen->is_format_supported(screen, PIPE_FORMAT_S8Z24_UNORM,
00236                                         PIPE_TEXTURE_2D, 
00237                                         PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
00238       ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
00239    }
00240 
00241    if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SRGB,
00242                                    PIPE_TEXTURE_2D, 
00243                                    PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
00244       ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
00245    }
00246 
00247 #if 01
00248    if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
00249                                    PIPE_TEXTURE_2D, 
00250                                    PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
00251       ctx->Extensions.EXT_texture_compression_s3tc = GL_TRUE;
00252    }
00253 #endif
00254    if (screen->is_format_supported(screen, PIPE_FORMAT_YCBCR, 
00255                                    PIPE_TEXTURE_2D, 
00256                                    PIPE_TEXTURE_USAGE_SAMPLER, 0) ||
00257        screen->is_format_supported(screen, PIPE_FORMAT_YCBCR_REV, 
00258                                    PIPE_TEXTURE_2D, 
00259                                    PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
00260       ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
00261    }
00262 
00263 }

void st_init_limits ( struct st_context *  st  ) 

Query driver to get implementation limits.

Note that we have to limit/clamp against Mesa's internal limits too.

Definition at line 66 of file st_extensions.c.

References _clamp(), _maxf(), _min(), CLAMP, st_context::ctx, pipe_screen::get_param, pipe_screen::get_paramf, st_context::pipe, PIPE_CAP_MAX_LINE_WIDTH, PIPE_CAP_MAX_LINE_WIDTH_AA, PIPE_CAP_MAX_POINT_WIDTH, PIPE_CAP_MAX_POINT_WIDTH_AA, PIPE_CAP_MAX_RENDER_TARGETS, PIPE_CAP_MAX_TEXTURE_2D_LEVELS, PIPE_CAP_MAX_TEXTURE_3D_LEVELS, PIPE_CAP_MAX_TEXTURE_ANISOTROPY, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS, PIPE_CAP_MAX_TEXTURE_LOD_BIAS, and pipe_context::screen.

00067 {
00068    struct pipe_screen *screen = st->pipe->screen;
00069    struct gl_constants *c = &st->ctx->Const;
00070 
00071    c->MaxTextureLevels
00072       = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
00073             MAX_TEXTURE_LEVELS);
00074 
00075    c->Max3DTextureLevels
00076       = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
00077             MAX_3D_TEXTURE_LEVELS);
00078 
00079    c->MaxCubeTextureLevels
00080       = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
00081             MAX_CUBE_TEXTURE_LEVELS);
00082 
00083    c->MaxTextureRectSize
00084       = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);
00085 
00086    c->MaxTextureUnits
00087       = c->MaxTextureImageUnits
00088       = c->MaxTextureCoordUnits
00089       = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS),
00090             MAX_TEXTURE_IMAGE_UNITS);
00091 
00092    c->MaxDrawBuffers
00093       = _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
00094               1, MAX_DRAW_BUFFERS);
00095 
00096    c->MaxLineWidth
00097       = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH));
00098    c->MaxLineWidthAA
00099       = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH_AA));
00100 
00101    c->MaxPointSize
00102       = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH));
00103    c->MaxPointSizeAA
00104       = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH_AA));
00105 
00106    c->MaxTextureMaxAnisotropy
00107       = _maxf(2.0f, screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_ANISOTROPY));
00108 
00109    c->MaxTextureLodBias
00110       = screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_LOD_BIAS);
00111 
00112    c->MaxDrawBuffers
00113       = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
00114               1, MAX_DRAW_BUFFERS);
00115 }

Generated on Tue Sep 29 06:25:54 2009 for Gallium3D by  doxygen 1.5.4