mesa: Allow depth = 0 parameter for TexImage3D.

Fixes the tests for the depth parameter for TexImage3D calls when the
target type is GL_TEXTURE_2D_ARRAY or GL_TEXTURE_CUBE_MAP_ARRAY
so that a depth value of 0 is accepted. Previously, the check
incorrectly required the depth argument to be atleast 1.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index a57c7da45ed7babac19e59fad64335cbdf2a5851..59a9870ed1b7ce6a8a4a7c5e2d22b2cc6d39060a 100644 (file)
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -1568,7 +1568,7 @@ _mesa_legal_texture_dimensions(struct gl_context *ctx, GLenum target,
          return GL_FALSE;
       if (height < 2 * border || height > 2 * border + maxSize)
          return GL_FALSE;
-      if (depth < 1 || depth > ctx->Const.MaxArrayTextureLayers)
+      if (depth < 0 || depth > ctx->Const.MaxArrayTextureLayers)
          return GL_FALSE;
       if (!ctx->Extensions.ARB_texture_non_power_of_two) {
          if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
@@ -1585,7 +1585,7 @@ _mesa_legal_texture_dimensions(struct gl_context *ctx, GLenum target,
          return GL_FALSE;
       if (height < 2 * border || height > 2 * border + maxSize)
          return GL_FALSE;
-      if (depth < 1 || depth > ctx->Const.MaxArrayTextureLayers || depth % 6)
+      if (depth < 0 || depth > ctx->Const.MaxArrayTextureLayers || depth % 6)
          return GL_FALSE;
       if (width != height)
          return GL_FALSE;