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meta: Do power of two samples check only for samples > 0

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otherwise samples=0 passes the check, which is invalid.

Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Neil Roberts <neil@linux.intel.com>
This commit is contained in:
Anuj Phogat 2000-12-31 16:05:42 -08:00
parent cb25087c7b
commit 0a4ea87344
1 changed files with 2 additions and 2 deletions
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4
src/mesa/drivers/common/meta_blit.c
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@ -82,7 +82,7 @@ setup_glsl_msaa_blit_scaled_shader(struct gl_context *ctx,
y_scale = samples * 0.5;
/* We expect only power of 2 samples in source multisample buffer. */
assert((samples & (samples - 1)) == 0);
assert(samples > 0 && (samples & (samples - 1)) == 0);
while (samples >> (shader_offset + 1)) {
shader_offset++;
}
@ -261,7 +261,7 @@ setup_glsl_msaa_blit_shader(struct gl_context *ctx,
}
/* We expect only power of 2 samples in source multisample buffer. */
assert((samples & (samples - 1)) == 0);
assert(samples > 0 && (samples & (samples - 1)) == 0);
while (samples >> (shader_offset + 1)) {
shader_offset++;
}