From 900a5c91eeb3acae7ee0ad331154531c4dba96e1 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Tue, 1 Mar 2011 14:46:50 +0000 Subject: i965: Use negative relocation deltas to minimse vertex uploads With relaxed relocation checking in the kernel, we can specify a negative delta (i.e. pointing outside of the target bo) in order to fake a range in a large buffer. We only then need to upload the elements used and adjust the buffer offset such that they correspond with the indices used in the DrawArrays. (Depends on libdrm 0209428b3918c4336018da9293cdcbf7f8fedfb6) Signed-off-by: Chris Wilson --- src/mesa/drivers/dri/intel/intel_screen.c | 11 +++++++++++ src/mesa/drivers/dri/intel/intel_screen.h | 1 + 2 files changed, 12 insertions(+) (limited to 'src/mesa/drivers/dri/intel') diff --git a/src/mesa/drivers/dri/intel/intel_screen.c b/src/mesa/drivers/dri/intel/intel_screen.c index 746da462ee..5c95c72732 100644 --- a/src/mesa/drivers/dri/intel/intel_screen.c +++ b/src/mesa/drivers/dri/intel/intel_screen.c @@ -309,6 +309,13 @@ intel_get_param(__DRIscreen *psp, int param, int *value) return GL_TRUE; } +static GLboolean +intel_get_boolean(__DRIscreen *psp, int param) +{ + int value = 0; + return intel_get_param(psp, param, &value) && value; +} + static void nop_callback(GLuint key, void *data, void *userData) { @@ -482,6 +489,10 @@ intel_init_bufmgr(struct intel_screen *intelScreen) intelScreen->named_regions = _mesa_NewHashTable(); + intelScreen->relaxed_relocations = 0; + intelScreen->relaxed_relocations |= + intel_get_boolean(spriv, I915_PARAM_HAS_RELAXED_DELTA) << 0; + return GL_TRUE; } diff --git a/src/mesa/drivers/dri/intel/intel_screen.h b/src/mesa/drivers/dri/intel/intel_screen.h index 5863093f00..0f0b5be56d 100644 --- a/src/mesa/drivers/dri/intel/intel_screen.h +++ b/src/mesa/drivers/dri/intel/intel_screen.h @@ -43,6 +43,7 @@ struct intel_screen __DRIscreen *driScrnPriv; GLboolean no_hw; + GLuint relaxed_relocations; GLboolean no_vbo; dri_bufmgr *bufmgr; -- cgit v1.2.3