st_extensions.h File Reference

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Functions
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.

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Function Documentation

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.

{
   struct pipe_screen *screen = st->pipe->screen;
   GLcontext *ctx = st->ctx;

   /*
    * Extensions that are supported by all Gallium drivers:
    */
   ctx->Extensions.ARB_multisample = GL_TRUE; /* API support */
   ctx->Extensions.ARB_fragment_program = GL_TRUE;
   ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; /* XXX temp */
   ctx->Extensions.ARB_texture_compression = GL_TRUE; /* API support only */
   ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
   ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
   ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
   ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
   ctx->Extensions.ARB_vertex_program = GL_TRUE;
   ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;

   ctx->Extensions.EXT_blend_color = GL_TRUE;
   ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
   ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
   ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
   ctx->Extensions.EXT_blend_minmax = GL_TRUE;
   ctx->Extensions.EXT_blend_subtract = GL_TRUE;
   ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
   ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
   ctx->Extensions.EXT_fog_coord = GL_TRUE;
   ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;
   ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
   ctx->Extensions.EXT_point_parameters = GL_TRUE;
   ctx->Extensions.EXT_secondary_color = GL_TRUE;
   ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
   ctx->Extensions.EXT_texture_env_add = GL_TRUE;
   ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
   ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
   ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;

   ctx->Extensions.NV_blend_square = GL_TRUE;
   ctx->Extensions.NV_texgen_reflection = GL_TRUE;

   ctx->Extensions.SGI_color_matrix = GL_TRUE;
   ctx->Extensions.SGIS_generate_mipmap = GL_TRUE; /* XXX temp */

   /*
    * Extensions that depend on the driver/hardware:
    */
   if (screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS) > 0) {
      ctx->Extensions.ARB_draw_buffers = GL_TRUE;
   }

   if (screen->get_param(screen, PIPE_CAP_GLSL)) {
      ctx->Extensions.ARB_fragment_shader = GL_TRUE;
      ctx->Extensions.ARB_vertex_shader = GL_TRUE;
      ctx->Extensions.ARB_shader_objects = GL_TRUE;
      ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
      ctx->Extensions.ARB_shading_language_120 = GL_TRUE;
   }

   if (screen->get_param(screen, PIPE_CAP_TEXTURE_MIRROR_REPEAT) > 0) {
      ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
   }

   if (screen->get_param(screen, PIPE_CAP_TEXTURE_MIRROR_CLAMP) > 0) {
      ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE;
   }

   if (screen->get_param(screen, PIPE_CAP_NPOT_TEXTURES)) {
      ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
      ctx->Extensions.NV_texture_rectangle = GL_TRUE;
   }

   if (screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS) > 1) {
      ctx->Extensions.ARB_multitexture = GL_TRUE;
   }

   if (screen->get_param(screen, PIPE_CAP_TWO_SIDED_STENCIL)) {
      ctx->Extensions.ATI_separate_stencil = GL_TRUE;
   }

   if (screen->get_param(screen, PIPE_CAP_ANISOTROPIC_FILTER)) {
      ctx->Extensions.EXT_texture_filter_anisotropic = GL_TRUE;
   }

   if (screen->get_param(screen, PIPE_CAP_POINT_SPRITE)) {
      ctx->Extensions.ARB_point_sprite = GL_TRUE;
      ctx->Extensions.NV_point_sprite = GL_TRUE;
   }

   if (screen->get_param(screen, PIPE_CAP_OCCLUSION_QUERY)) {
      ctx->Extensions.ARB_occlusion_query = GL_TRUE;
   }

   if (screen->get_param(screen, PIPE_CAP_TEXTURE_SHADOW_MAP)) {
      ctx->Extensions.ARB_depth_texture = GL_TRUE;
      ctx->Extensions.ARB_shadow = GL_TRUE;
      ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
      /*ctx->Extensions.ARB_shadow_ambient = GL_TRUE;*/
   }

   /* GL_EXT_packed_depth_stencil requires both the ability to render to
    * a depth/stencil buffer and texture from depth/stencil source.
    */
   if (screen->is_format_supported(screen, PIPE_FORMAT_Z24S8_UNORM,
                                   PIPE_TEXTURE_2D, 
                                   PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0) &&
       screen->is_format_supported(screen, PIPE_FORMAT_Z24S8_UNORM,
                                   PIPE_TEXTURE_2D, 
                                   PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
      ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
   }
   else if (screen->is_format_supported(screen, PIPE_FORMAT_S8Z24_UNORM,
                                        PIPE_TEXTURE_2D, 
                                        PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0) &&
            screen->is_format_supported(screen, PIPE_FORMAT_S8Z24_UNORM,
                                        PIPE_TEXTURE_2D, 
                                        PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
      ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
   }

   if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SRGB,
                                   PIPE_TEXTURE_2D, 
                                   PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
      ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
   }

#if 01
   if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
                                   PIPE_TEXTURE_2D, 
                                   PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
      ctx->Extensions.EXT_texture_compression_s3tc = GL_TRUE;
   }
#endif
   if (screen->is_format_supported(screen, PIPE_FORMAT_YCBCR, 
                                   PIPE_TEXTURE_2D, 
                                   PIPE_TEXTURE_USAGE_SAMPLER, 0) ||
       screen->is_format_supported(screen, PIPE_FORMAT_YCBCR_REV, 
                                   PIPE_TEXTURE_2D, 
                                   PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
      ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
   }

}

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.

{
   struct pipe_screen *screen = st->pipe->screen;
   struct gl_constants *c = &st->ctx->Const;

   c->MaxTextureLevels
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
            MAX_TEXTURE_LEVELS);

   c->Max3DTextureLevels
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_3D_LEVELS),
            MAX_3D_TEXTURE_LEVELS);

   c->MaxCubeTextureLevels
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS),
            MAX_CUBE_TEXTURE_LEVELS);

   c->MaxTextureRectSize
      = _min(1 << (c->MaxTextureLevels - 1), MAX_TEXTURE_RECT_SIZE);

   c->MaxTextureUnits
      = c->MaxTextureImageUnits
      = c->MaxTextureCoordUnits
      = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS),
            MAX_TEXTURE_IMAGE_UNITS);

   c->MaxDrawBuffers
      = _clamp(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
              1, MAX_DRAW_BUFFERS);

   c->MaxLineWidth
      = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH));
   c->MaxLineWidthAA
      = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_LINE_WIDTH_AA));

   c->MaxPointSize
      = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH));
   c->MaxPointSizeAA
      = _maxf(1.0f, screen->get_paramf(screen, PIPE_CAP_MAX_POINT_WIDTH_AA));

   c->MaxTextureMaxAnisotropy
      = _maxf(2.0f, screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_ANISOTROPY));

   c->MaxTextureLodBias
      = screen->get_paramf(screen, PIPE_CAP_MAX_TEXTURE_LOD_BIAS);

   c->MaxDrawBuffers
      = CLAMP(screen->get_param(screen, PIPE_CAP_MAX_RENDER_TARGETS),
              1, MAX_DRAW_BUFFERS);
}

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