From 6d540aa092d5d78dde643af40257444567bf7b95 Mon Sep 17 00:00:00 2001 From: "Juan A. Suarez Romero" Date: Wed, 29 Nov 2017 12:09:47 +0100 Subject: [PATCH] mesa: deal with vs_inputs as 64-bit unsigned integer MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Commit 78942e ("mesa: shrink VERT_ATTRIB bitfields to 32 bits") uses vs_prog_data->vs_inputs as if it were a 32-bit unsigned integer. But actually it is a 64-bit integer, and as such it is used in other parts of Mesa code. It is worth to note that bits from the entire range are used, and not only 32-bits. This is due our implementation for handling 64-bit dual-slot input attributes, which requires to use a larger bitfield to manage them. This commit reverts the changes done in brw_draw_upload.c, keeping the rest of the changes. This fixes the following tests: - KHR-GL45.enhanced_layouts.varying_array_locations - KHR-GL45.enhanced_layouts.varying_locations Fixes: 78942e ("mesa: shrink VERT_ATTRIB bitfields to 32 bits") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103942 CC: Marek Olšák CC: Ian Romanick Reviewed-by: Marek Olšák Reviewed-by: Iago Toral Quiroga Signed-off-by: Juan A. Suarez Romero --- src/mesa/drivers/dri/i965/brw_draw_upload.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/src/mesa/drivers/dri/i965/brw_draw_upload.c b/src/mesa/drivers/dri/i965/brw_draw_upload.c index 2204bf4..9b81999 100644 --- a/src/mesa/drivers/dri/i965/brw_draw_upload.c +++ b/src/mesa/drivers/dri/i965/brw_draw_upload.c @@ -458,7 +458,7 @@ brw_prepare_vertices(struct brw_context *brw) /* BRW_NEW_VS_PROG_DATA */ const struct brw_vs_prog_data *vs_prog_data = brw_vs_prog_data(brw->vs.base.prog_data); - GLbitfield vs_inputs = vs_prog_data->inputs_read; + GLbitfield64 vs_inputs = vs_prog_data->inputs_read; const unsigned char *ptr = NULL; GLuint interleaved = 0; unsigned int min_index = brw->vb.min_index + brw->basevertex; @@ -487,16 +487,16 @@ brw_prepare_vertices(struct brw_context *brw) /* Accumulate the list of enabled arrays. */ brw->vb.nr_enabled = 0; while (vs_inputs) { - GLuint first = ffs(vs_inputs) - 1; + GLuint first = ffsll(vs_inputs) - 1; assert (first < 64); GLuint index = first - DIV_ROUND_UP(_mesa_bitcount_64(vs_prog_data->double_inputs_read & BITFIELD64_MASK(first)), 2); struct brw_vertex_element *input = &brw->vb.inputs[index]; input->is_dual_slot = (vs_prog_data->double_inputs_read & BITFIELD64_BIT(first)) != 0; - vs_inputs &= ~BITFIELD_BIT(first); + vs_inputs &= ~BITFIELD64_BIT(first); if (input->is_dual_slot) - vs_inputs &= ~BITFIELD_BIT(first + 1); + vs_inputs &= ~BITFIELD64_BIT(first + 1); brw->vb.enabled[brw->vb.nr_enabled++] = input; } -- 2.7.4