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wined3d: Introduce compare_uint(). 

Signed-off-by: Chip Davis <cdavis@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Chip Davis 2020-04-08 19:00:07 +04:30 committed by Alexandre Julliard
parent 03793f3a1f
commit e463fa29ef
1 changed files with 14 additions and 11 deletions
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25
dlls/wined3d/utils.c
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@ -3262,16 +3262,19 @@ static BOOL init_format_texture_info(struct wined3d_adapter *adapter, struct win
return TRUE;
}
static BOOL color_match(DWORD c1, DWORD c2, BYTE max_diff)
static BOOL compare_uint(unsigned int x, unsigned int y, unsigned int max_diff)
{
if (abs((c1 & 0xff) - (c2 & 0xff)) > max_diff) return FALSE;
c1 >>= 8; c2 >>= 8;
if (abs((c1 & 0xff) - (c2 & 0xff)) > max_diff) return FALSE;
c1 >>= 8; c2 >>= 8;
if (abs((c1 & 0xff) - (c2 & 0xff)) > max_diff) return FALSE;
c1 >>= 8; c2 >>= 8;
if (abs((c1 & 0xff) - (c2 & 0xff)) > max_diff) return FALSE;
return TRUE;
unsigned int diff = x > y ? x - y : y - x;
return diff <= max_diff;
}
static BOOL compare_colour(DWORD c1, DWORD c2, BYTE max_diff)
{
return compare_uint(c1 & 0xff, c2 & 0xff, max_diff)
&& compare_uint((c1 >> 8) & 0xff, (c2 >> 8) & 0xff, max_diff)
&& compare_uint((c1 >> 16) & 0xff, (c2 >> 16) & 0xff, max_diff)
&& compare_uint((c1 >> 24) & 0xff, (c2 >> 24) & 0xff, max_diff);
}
/* A context is provided by the caller */
@ -3345,8 +3348,8 @@ static BOOL check_filter(const struct wined3d_gl_info *gl_info, GLenum internal)
gl_info->gl_ops.gl.p_glBindTexture(GL_TEXTURE_2D, buffer);
memset(readback, 0x7f, sizeof(readback));
gl_info->gl_ops.gl.p_glGetTexImage(GL_TEXTURE_2D, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, readback);
if (color_match(readback[6], 0xffffffff, 5) || color_match(readback[6], 0x00000000, 5)
|| color_match(readback[9], 0xffffffff, 5) || color_match(readback[9], 0x00000000, 5))
if (compare_colour(readback[6], 0xffffffff, 5) || compare_colour(readback[6], 0x00000000, 5)
|| compare_colour(readback[9], 0xffffffff, 5) || compare_colour(readback[9], 0x00000000, 5))
{
TRACE("Read back colors 0x%08x and 0x%08x close to unfiltered color, assuming no filtering\n",
readback[6], readback[9]);