From 0481ed25c9c35178bf5151c80f4c36ad42b75648 Mon Sep 17 00:00:00 2001 From: Luca Barbieri Date: Sun, 18 Apr 2010 16:43:19 +0200 Subject: [PATCH] nvfx: new 2D: use a CPU copy for up to 4 pixels, up from 0 Seems a reasonable threshold for now. Significantly speeds up Piglit's 1x1 glReadPixels (but, you know, reading pixels in 1x1 blocks is NOT a good idea, especially if you might be running on a less-than-perfect driver). --- src/gallium/drivers/nvfx/nvfx_surface.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/src/gallium/drivers/nvfx/nvfx_surface.c b/src/gallium/drivers/nvfx/nvfx_surface.c index 8208c67f2a2..7efdd954b4b 100644 --- a/src/gallium/drivers/nvfx/nvfx_surface.c +++ b/src/gallium/drivers/nvfx/nvfx_surface.c @@ -250,11 +250,7 @@ nvfx_resource_copy_region(struct pipe_context *pipe, static int copy_threshold = -1; if(copy_threshold < 0) - { - copy_threshold = debug_get_num_option("NOUVEAU_COPY_THRESHOLD", 0); - if(copy_threshold < 0) - copy_threshold = 0; - } + copy_threshold = debug_get_num_option("NOUVEAU_COPY_THRESHOLD", 4); int dst_to_gpu = dstr->usage != PIPE_USAGE_DYNAMIC && dstr->usage != PIPE_USAGE_STAGING; int src_on_gpu = nvfx_resource_on_gpu(srcr); -- 2.30.2