llvmpipe: Bump the maximum texture size (in pixels).

But cap the size in bytes, to avoid depleting the whole system memory,
with humongus textures.

Tested with max-texture-size piglit test.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_texture.c b/src/gallium/drivers/llvmpipe/lp_texture.c
index 4495e8de6cd..36041432312 100644
--- a/src/gallium/drivers/llvmpipe/lp_texture.c
+++ b/src/gallium/drivers/llvmpipe/lp_texture.c
@@ -112,6 +112,7 @@ llvmpipe_texture_layout(struct llvmpipe_screen *screen,
    unsigned width = pt->width0;
    unsigned height = pt->height0;
    unsigned depth = pt->depth0;
+   size_t total_size = 0;
 
    assert(LP_MAX_TEXTURE_2D_LEVELS <= LP_MAX_TEXTURE_LEVELS);
    assert(LP_MAX_TEXTURE_3D_LEVELS <= LP_MAX_TEXTURE_LEVELS);
@@ -168,6 +169,11 @@ llvmpipe_texture_layout(struct llvmpipe_screen *screen,
          }
       }
 
+      total_size += lpr->num_slices_faces[level] * lpr->img_stride[level];
+      if (total_size > LP_MAX_TEXTURE_SIZE) {
+         goto fail;
+      }
+
       /* Compute size of next mipmap level */
       width = u_minify(width, 1);
       height = u_minify(height, 1);