+static void
+tdfxGenerateMipmap(struct gl_context *ctx, GLenum target,
+ struct gl_texture_object *texObj)
+{
+ GLint mipWidth, mipHeight;
+ tdfxMipMapLevel *mip;
+ struct gl_texture_image *mipImage; /* the new/next image */
+ struct gl_texture_image *texImage;
+ const GLint maxLevels = _mesa_max_texture_levels(ctx, texObj->Target);
+ GLint level = texObj->BaseLevel;
+ GLsizei width, height, texelBytes;
+ const tdfxMipMapLevel *mml;
+
+ texImage = _mesa_get_tex_image(ctx, texObj, target, level);
+ texelBytes = _mesa_get_format_bytes(texImage->TexFormat);
+
+ mml = TDFX_TEXIMAGE_DATA(texImage);
+
+ width = texImage->Width;
+ height = texImage->Height;
+ while (level < texObj->MaxLevel && level < maxLevels - 1) {
+ mipWidth = width / 2;
+ if (!mipWidth) {
+ mipWidth = 1;
+ }
+ mipHeight = height / 2;
+ if (!mipHeight) {
+ mipHeight = 1;
+ }
+ if ((mipWidth == width) && (mipHeight == height)) {
+ break;
+ }
+ ++level;
+ mipImage = _mesa_select_tex_image(ctx, texObj, target, level);
+ mip = TDFX_TEXIMAGE_DATA(mipImage);
+ _mesa_halve2x2_teximage2d(ctx,
+ texImage,
+ texelBytes,
+ mml->width, mml->height,
+ texImage->Data, mipImage->Data);
+ texImage = mipImage;
+ mml = mip;
+ width = mipWidth;
+ height = mipHeight;
+ }
+}
+
+