st_gen_mipmap.h File Reference

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Functions
void	st_init_generate_mipmap (struct st_context *st)
	one-time init for generate mipmap XXX Note: there may be other times we need no-op/simple state like this.
void	st_destroy_generate_mipmap (struct st_context *st)
void	st_generate_mipmap (GLcontext *ctx, GLenum target, struct gl_texture_object *texObj)

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Function Documentation

void st_destroy_generate_mipmap

(

struct st_context *

st

)

Definition at line 65 of file st_gen_mipmap.c.

References st_context::gen_mipmap, and util_destroy_gen_mipmap().

{
   util_destroy_gen_mipmap(st->gen_mipmap);
   st->gen_mipmap = NULL;
}

void st_generate_mipmap	(	GLcontext *	ctx,
		GLenum	target,
		struct gl_texture_object *	texObj
	)

Definition at line 157 of file st_gen_mipmap.c.

References pipe_texture::depth, fallback_generate_mipmap(), pipe_texture::height, pipe_texture::last_level, pipe_texture_reference(), st_texture_image::pt, st_get_texobj_texture(), st_render_mipmap(), and pipe_texture::width.

{
   struct st_context *st = ctx->st;
   struct pipe_texture *pt = st_get_texobj_texture(texObj);
   const uint baseLevel = texObj->BaseLevel;
   const uint lastLevel = pt->last_level;
   uint dstLevel;

   if (!st_render_mipmap(st, target, pt, baseLevel, lastLevel)) {
      fallback_generate_mipmap(ctx, target, texObj);
   }

   /* Fill in the Mesa gl_texture_image fields */
   for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
      const uint srcLevel = dstLevel - 1;
      const struct gl_texture_image *srcImage
         = _mesa_get_tex_image(ctx, texObj, target, srcLevel);
      struct gl_texture_image *dstImage;
      struct st_texture_image *stImage;
      uint dstWidth = pt->width[dstLevel];
      uint dstHeight = pt->height[dstLevel];
      uint dstDepth = pt->depth[dstLevel];
      uint border = srcImage->Border;

      dstImage = _mesa_get_tex_image(ctx, texObj, target, dstLevel);
      if (!dstImage) {
         _mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps");
         return;
      }

      if (dstImage->ImageOffsets)
         _mesa_free(dstImage->ImageOffsets);

      /* Free old image data */
      if (dstImage->Data)
         ctx->Driver.FreeTexImageData(ctx, dstImage);

      /* initialize new image */
      _mesa_init_teximage_fields(ctx, target, dstImage, dstWidth, dstHeight,
                                 dstDepth, border, srcImage->InternalFormat);

      dstImage->TexFormat = srcImage->TexFormat;

      stImage = (struct st_texture_image *) dstImage;
      pipe_texture_reference(&stImage->pt, pt);
   }
}

void st_init_generate_mipmap

(

struct st_context *

st

)

one-time init for generate mipmap XXX Note: there may be other times we need no-op/simple state like this.

In that case, some code refactoring would be good.

Definition at line 58 of file st_gen_mipmap.c.

References st_context::cso_context, st_context::gen_mipmap, st_context::pipe, and util_create_gen_mipmap().

{
   st->gen_mipmap = util_create_gen_mipmap(st->pipe, st->cso_context);
}

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