From 6ca9b532d825797741a2fef519f17c21e0d6cb94 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Fri, 30 Aug 2013 12:37:15 -0700 Subject: [PATCH] i965: Stop allocating miptrees with first_level != 0. If the caller shows up with GL_BASE_LEVEL != 0, it doesn't mean that the texture will over the course of its lifetime have that nonzero baselevel, it means that the caller is filling the texture from the bottom up for some reason (one could imagine demand-loading detailed texture layers at runtime, for example). If we allocate from just the current baselevel, it means when they come along with the next level up, we'll have to allocate a new miptree and copy all of our bits out of the first miptree. Reviewed-by: Chad Versace --- src/mesa/drivers/dri/i965/intel_tex_image.c | 23 ++++++--------------- 1 file changed, 6 insertions(+), 17 deletions(-) diff --git a/src/mesa/drivers/dri/i965/intel_tex_image.c b/src/mesa/drivers/dri/i965/intel_tex_image.c index 725d3155b29..fe274bf1ae3 100644 --- a/src/mesa/drivers/dri/i965/intel_tex_image.c +++ b/src/mesa/drivers/dri/i965/intel_tex_image.c @@ -35,7 +35,6 @@ intel_miptree_create_for_teximage(struct brw_context *brw, struct intel_texture_image *intelImage, bool expect_accelerated_upload) { - GLuint firstLevel; GLuint lastLevel; int width, height, depth; GLuint i; @@ -45,16 +44,8 @@ intel_miptree_create_for_teximage(struct brw_context *brw, DBG("%s\n", __FUNCTION__); - /* If this image disrespects BaseLevel, allocate from level zero. - * Usually BaseLevel == 0, so it's unlikely to happen. - */ - if (intelImage->base.Base.Level < intelObj->base.BaseLevel) - firstLevel = 0; - else - firstLevel = intelObj->base.BaseLevel; - /* Figure out image dimensions at start level. */ - for (i = intelImage->base.Base.Level; i > firstLevel; i--) { + for (i = intelImage->base.Base.Level; i > 0; i--) { width <<= 1; if (height != 1) height <<= 1; @@ -69,19 +60,17 @@ intel_miptree_create_for_teximage(struct brw_context *brw, */ if ((intelObj->base.Sampler.MinFilter == GL_NEAREST || intelObj->base.Sampler.MinFilter == GL_LINEAR) && - intelImage->base.Base.Level == firstLevel && - firstLevel == 0) { - lastLevel = firstLevel; + intelImage->base.Base.Level == 0) { + lastLevel = 0; } else { - lastLevel = (firstLevel + - _mesa_get_tex_max_num_levels(intelObj->base.Target, - width, height, depth) - 1); + lastLevel = _mesa_get_tex_max_num_levels(intelObj->base.Target, + width, height, depth) - 1; } return intel_miptree_create(brw, intelObj->base.Target, intelImage->base.Base.TexFormat, - firstLevel, + 0, lastLevel, width, height, -- 2.30.2