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authorBrian <brian@nostromo.localnet.net>2007-04-01 18:30:28 -0600
committerBrian <brian@nostromo.localnet.net>2007-04-01 18:30:28 -0600
commit3fd88089c03f2dbe634ba2611955c6d0a6b2ccd5 (patch)
tree70934c981bd7bcae84bdb8c43f6d9aae5fbd6eb5 /src/mesa
parent0683e4ce4bbbe381cbf59122aaef4ae3671d45e9 (diff)
Fix some bugs/issues related to alpha channel support. See bug 10483.
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/drivers/x11/xm_api.c54
1 files changed, 23 insertions, 31 deletions
diff --git a/src/mesa/drivers/x11/xm_api.c b/src/mesa/drivers/x11/xm_api.c
index 63b9ac51a5..24028a44ba 100644
--- a/src/mesa/drivers/x11/xm_api.c
+++ b/src/mesa/drivers/x11/xm_api.c
@@ -970,42 +970,33 @@ setup_truecolor(XMesaVisual v, XMesaBuffer buffer, XMesaColormap cmap)
&& GET_BLUEMASK(v) ==0xff0000
&& CHECK_BYTE_ORDER(v)
&& v->BitsPerPixel==32
- && sizeof(GLuint)==4
&& v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) {
/* common 32 bpp config used on SGI, Sun */
- v->undithered_pf = v->dithered_pf = PF_8A8B8G8R;
- }
- else if (GET_REDMASK(v) ==0xff0000
- && GET_GREENMASK(v)==0x00ff00
- && GET_BLUEMASK(v) ==0x0000ff
- && CHECK_BYTE_ORDER(v)
- && v->BitsPerPixel==32
- && sizeof(GLuint)==4
- && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) {
- /* common 32 bpp config used on Linux, HP, IBM */
- if (GET_VISUAL_DEPTH(v)==32)
- v->undithered_pf = v->dithered_pf = PF_8A8R8G8B;
- else
- v->undithered_pf = v->dithered_pf = PF_8R8G8B;
- }
- else if (GET_REDMASK(v) ==0xff0000
- && GET_GREENMASK(v)==0x00ff00
- && GET_BLUEMASK(v) ==0x0000ff
- && CHECK_BYTE_ORDER(v)
- && v->BitsPerPixel==24
- && sizeof(GLuint)==4
- && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) {
- /* common packed 24 bpp config used on Linux */
- v->undithered_pf = v->dithered_pf = PF_8R8G8B24;
+ v->undithered_pf = v->dithered_pf = PF_8A8B8G8R; /* ABGR */
+ }
+ else if (GET_REDMASK(v) == 0xff0000
+ && GET_GREENMASK(v)== 0x00ff00
+ && GET_BLUEMASK(v) == 0x0000ff
+ && CHECK_BYTE_ORDER(v)
+ && v->RedGamma == 1.0 && v->GreenGamma == 1.0 && v->BlueGamma == 1.0){
+ if (v->BitsPerPixel==32) {
+ /* if 32 bpp, and visual indicates 8 bpp alpha channel */
+ if (GET_VISUAL_DEPTH(v) == 32 && v->mesa_visual.alphaBits == 8)
+ v->undithered_pf = v->dithered_pf = PF_8A8R8G8B; /* ARGB */
+ else
+ v->undithered_pf = v->dithered_pf = PF_8R8G8B; /* xRGB */
+ }
+ else if (v->BitsPerPixel == 24) {
+ v->undithered_pf = v->dithered_pf = PF_8R8G8B24; /* RGB */
+ }
}
else if (GET_REDMASK(v) ==0xf800
&& GET_GREENMASK(v)==0x07e0
&& GET_BLUEMASK(v) ==0x001f
&& CHECK_BYTE_ORDER(v)
&& v->BitsPerPixel==16
- && sizeof(GLushort)==2
&& v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) {
- /* 5-6-5 color weight on common PC VGA boards */
+ /* 5-6-5 RGB */
v->undithered_pf = PF_5R6G5B;
v->dithered_pf = PF_Dither_5R6G5B;
}
@@ -1013,6 +1004,7 @@ setup_truecolor(XMesaVisual v, XMesaBuffer buffer, XMesaColormap cmap)
&& GET_GREENMASK(v)==0x1c
&& GET_BLUEMASK(v) ==0x03
&& CHECK_FOR_HPCR(v)) {
+ /* 8-bit HP color recovery */
setup_8bit_hpcr( v );
}
}
@@ -1414,6 +1406,9 @@ XMesaVisual XMesaCreateVisual( XMesaDisplay *display,
v->mesa_visual.visualRating = visualCaveat;
+ if (alpha_flag)
+ v->mesa_visual.alphaBits = 8;
+
(void) initialize_visual_and_buffer( 0, v, NULL, rgb_flag, 0, 0 );
{
@@ -1422,7 +1417,6 @@ XMesaVisual XMesaCreateVisual( XMesaDisplay *display,
red_bits = _mesa_bitcount(GET_REDMASK(v));
green_bits = _mesa_bitcount(GET_GREENMASK(v));
blue_bits = _mesa_bitcount(GET_BLUEMASK(v));
- alpha_bits = 0;
}
else {
/* this is an approximation */
@@ -1436,11 +1430,9 @@ XMesaVisual XMesaCreateVisual( XMesaDisplay *display,
alpha_bits = 0;
assert( red_bits + green_bits + blue_bits == GET_VISUAL_DEPTH(v) );
}
+ alpha_bits = v->mesa_visual.alphaBits;
}
- if (alpha_flag && alpha_bits == 0)
- alpha_bits = 8;
-
_mesa_initialize_visual( &v->mesa_visual,
rgb_flag, db_flag, stereo_flag,
red_bits, green_bits,