From ded0ec1ea5db8e08b0bec8ac0d9d30f98e360003 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Thu, 12 Nov 2009 14:57:30 -0800 Subject: i965: Use bo_map instead of subdata to upload the bits of constant buffer. Saves CPU time, resulting in a 2.5% FPS win on ETQW. --- src/mesa/drivers/dri/i965/brw_vs_surface_state.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'src/mesa/drivers/dri/i965/brw_vs_surface_state.c') diff --git a/src/mesa/drivers/dri/i965/brw_vs_surface_state.c b/src/mesa/drivers/dri/i965/brw_vs_surface_state.c index 5dac632969..3bc9840a97 100644 --- a/src/mesa/drivers/dri/i965/brw_vs_surface_state.c +++ b/src/mesa/drivers/dri/i965/brw_vs_surface_state.c @@ -68,10 +68,13 @@ brw_vs_update_constant_buffer(struct brw_context *brw) */ _mesa_load_state_parameters(&brw->intel.ctx, vp->program.Base.Parameters); + intel_bo_map_gtt_preferred(intel, const_buffer, GL_TRUE); for (i = 0; i < params->NumParameters; i++) { - dri_bo_subdata(const_buffer, i * 4 * sizeof(float), 4 * sizeof(float), - params->ParameterValues[i]); + memcpy(const_buffer->virtual + i * 4 * sizeof(float), + params->ParameterValues[i], + 4 * sizeof(float)); } + intel_bo_unmap_gtt_preferred(intel, const_buffer); return const_buffer; } -- cgit v1.2.3