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mesa: Make use of u_bit_scan{,64}.

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Reviewed-by: Brian Paul <brianp@vmware.com>
Tested-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Mathias Fröhlich <Mathias.Froehlich@web.de>
This commit is contained in:
Mathias Fröhlich 2016-06-09 06:35:34 +02:00
parent c3b6656676
commit ed2dae86ae
2 changed files with 5 additions and 5 deletions
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6
src/mesa/main/arrayobj.c
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@ -52,6 +52,7 @@
#include "mtypes.h"
#include "varray.h"
#include "main/dispatch.h"
#include "util/bitscan.h"
/**
@ -342,13 +343,12 @@ _mesa_update_vao_client_arrays(struct gl_context *ctx,
GLbitfield64 arrays = vao->NewArrays;
while (arrays) {
const int attrib = u_bit_scan64(&arrays);
struct gl_client_array *client_array;
struct gl_vertex_attrib_array *attrib_array;
struct gl_vertex_buffer_binding *buffer_binding;
GLint attrib = ffsll(arrays) - 1;
arrays ^= BITFIELD64_BIT(attrib);
attrib_array = &vao->VertexAttrib[attrib];
buffer_binding = &vao->VertexBinding[attrib_array->VertexBinding];
client_array = &vao->_VertexAttrib[attrib];

4
src/mesa/main/buffers.c
View file

@ -36,6 +36,7 @@
#include "enums.h"
#include "fbobject.h"
#include "mtypes.h"
#include "util/bitscan.h"
#define BAD_MASK ~0u
@ -595,13 +596,12 @@ _mesa_drawbuffers(struct gl_context *ctx, struct gl_framebuffer *fb,
if (n > 0 && _mesa_bitcount(destMask[0]) > 1) {
GLuint count = 0, destMask0 = destMask[0];
while (destMask0) {
GLint bufIndex = ffs(destMask0) - 1;
const int bufIndex = u_bit_scan(&destMask0);
if (fb->_ColorDrawBufferIndexes[count] != bufIndex) {
updated_drawbuffers(ctx, fb);
fb->_ColorDrawBufferIndexes[count] = bufIndex;
}
count++;
destMask0 &= ~(1 << bufIndex);
}
fb->ColorDrawBuffer[0] = buffers[0];
fb->_NumColorDrawBuffers = count;