More texture image changes.

1. Added ctx->Driver.ChooseTextureFormat() function.  Examines user's
   internalFormat, format, type params and returns a gl_texture_format.
2. _mesa_store_teximage[123]d() calls ctx->Driver.ChooseTextureFormat(),
   allocates storage and transfers the image into the desired format.
3. _mesa_transfer_teximage() now takes a gl_texture_format to describe
   the destination format.  Any combination of input format/type and
   output gl_texture_format is accepted.  Uses optimized _mesa_convert_-
   texsubimage[123]d() functions when possible.
3. DRI driver's TexImage[123]D functions should be a lot simpler now.

1 files changed, 7 insertions, 4 deletions

diff --git a/src/mesa/main/texformat.h b/src/mesa/main/texformat.h
index 6f686265ef2..ac6dbc0cb72 100644
--- a/src/mesa/main/texformat.h
+++ b/src/mesa/main/texformat.h
@@ -1,4 +1,4 @@
-/* $Id: texformat.h,v 1.5 2001/03/22 06:26:18 gareth Exp $ */
+/* $Id: texformat.h,v 1.6 2001/04/04 21:54:21 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -83,9 +83,12 @@ enum _format {
 };
 
 
-extern void
-_mesa_init_tex_format( GLcontext *ctx, GLenum internalFormat,
-		       struct gl_texture_image *texImage );
+extern GLboolean
+_mesa_is_hardware_tex_format( const struct gl_texture_format *format );
+
+extern const struct gl_texture_format *
+_mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
+                         GLenum format, GLenum type );
 
 
 /* The default formats, GLchan per component: