[Mesa-dev] [PATCH] mesa: don't signal _NEW_TEXTURE in TexSubImage() functions

[Brian Paul]

glTexSubImage(), glCopyTexSubImage() and glCompressedTexSubImage()
only change the texel data, not other state like texture size or format.
If a driver really needs do something special it can hook into the
corresponding driver functions or Map/UnmapTextureImage().

This should avoid some needless state validation effort.
---
 src/mesa/main/teximage.c |   12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index 6f84b38..4d635fe 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -3442,7 +3442,9 @@ texsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
 
          check_gen_mipmap(ctx, target, texObj, level);
 
-         ctx->NewState |= _NEW_TEXTURE;
+         /* NOTE: Don't signal _NEW_TEXTURE since we've only changed
+          * the texel data, not the texture format, size, etc.
+          */
       }
    }
    _mesa_unlock_texture(ctx, texObj);
@@ -3729,7 +3731,9 @@ copytexsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
 
          check_gen_mipmap(ctx, target, texObj, level);
 
-         ctx->NewState |= _NEW_TEXTURE;
+         /* NOTE: Don't signal _NEW_TEXTURE since we've only changed
+          * the texel data, not the texture format, size, etc.
+          */
       }
    }
    _mesa_unlock_texture(ctx, texObj);
@@ -3954,7 +3958,9 @@ compressed_tex_sub_image(GLuint dims, GLenum target, GLint level,
 
          check_gen_mipmap(ctx, target, texObj, level);
 
-         ctx->NewState |= _NEW_TEXTURE;
+         /* NOTE: Don't signal _NEW_TEXTURE since we've only changed
+          * the texel data, not the texture format, size, etc.
+          */
       }
    }
    _mesa_unlock_texture(ctx, texObj);
-- 
1.7.10.4