| … | |
… | |
| 71 | |
71 | |
| 72 | // since we require rgb24/argb32 formats from xrender we assume |
72 | // since we require rgb24/argb32 formats from xrender we assume |
| 73 | // that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
73 | // that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
| 74 | int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24; |
74 | int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24; |
| 75 | |
75 | |
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76 | int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
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77 | |
| 76 | XImage xi; |
78 | XImage xi; |
| 77 | |
79 | |
| 78 | xi.width = width; |
80 | xi.width = width; |
| 79 | xi.height = height; |
81 | xi.height = height; |
| 80 | xi.xoffset = 0; |
82 | xi.xoffset = 0; |
| 81 | xi.format = ZPixmap; |
83 | xi.format = ZPixmap; |
| 82 | xi.byte_order = LSBFirst; // maybe go for host byte order, because servers are usually local? |
84 | xi.byte_order = ImageByteOrder (dpy); |
| 83 | xi.bitmap_unit = 32; |
85 | xi.bitmap_unit = 0; //XY only, unused |
| 84 | xi.bitmap_bit_order = LSBFirst; |
86 | xi.bitmap_bit_order = 0; //XY only, unused |
| 85 | xi.bitmap_pad = BitmapPad (dpy); |
87 | xi.bitmap_pad = BitmapPad (dpy); |
| 86 | xi.depth = depth; |
88 | xi.depth = depth; |
| 87 | xi.bytes_per_line = 0; |
89 | xi.bytes_per_line = 0; |
| 88 | xi.bits_per_pixel = 32; |
90 | xi.bits_per_pixel = 32; //Z only |
| 89 | xi.red_mask = 0x000000ff; |
91 | xi.red_mask = 0x00000000; //Z only, unused |
| 90 | xi.green_mask = 0x0000ff00; |
92 | xi.green_mask = 0x00000000; //Z only, unused |
| 91 | xi.blue_mask = 0x00ff0000; |
93 | xi.blue_mask = 0x00000000; //Z only, unused |
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94 | xi.obdata = 0; // probably unused |
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95 | |
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96 | bool byte_order_mismatch = byte_order != xi.byte_order; |
| 92 | |
97 | |
| 93 | if (!XInitImage (&xi)) |
98 | if (!XInitImage (&xi)) |
| 94 | rxvt_fatal ("unable to initialise ximage, please report.\n"); |
99 | rxvt_fatal ("unable to initialise ximage, please report.\n"); |
| 95 | |
100 | |
| 96 | if (height > INT_MAX / xi.bytes_per_line) |
101 | if (height > INT_MAX / xi.bytes_per_line) |
| … | |
… | |
| 114 | { |
119 | { |
| 115 | uint8_t r = *src++; |
120 | uint8_t r = *src++; |
| 116 | uint8_t g = *src++; |
121 | uint8_t g = *src++; |
| 117 | uint8_t b = *src++; |
122 | uint8_t b = *src++; |
| 118 | |
123 | |
| 119 | uint32_t v = r | (g << 8) | (b << 16); |
124 | uint32_t v = (r << 16) | (g << 8) | b; |
| 120 | |
125 | |
| 121 | if (ecb_big_endian ()) |
126 | if (ecb_big_endian ()) |
| 122 | v = ecb_bswap32 (v); |
127 | v = ecb_bswap32 (v); |
| 123 | |
128 | |
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129 | if (byte_order_mismatch) |
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130 | v = ecb_bswap32 (v); |
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131 | |
| 124 | *dst++ = x; |
132 | *dst++ = v; |
| 125 | } |
133 | } |
| 126 | else |
134 | else |
| 127 | for (int x = 0; x < width; x++) |
135 | for (int x = 0; x < width; x++) |
| 128 | { |
136 | { |
| 129 | uint32_t v = *(uint32_t *)src; src += 4; |
137 | uint32_t v = *(uint32_t *)src; src += 4; |
| 130 | v = ecb_big_endian () ? ecb_rotr32 (v, 8) : ecb_rotl32 (v, 8); |
138 | |
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139 | if (ecb_little_endian ()) |
| 131 | *dst++ = ecb_bswap32 (v); |
140 | v = ecb_bswap32 (v); |
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141 | |
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142 | v = ecb_rotr32 (v, 8); |
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143 | |
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144 | if (byte_order_mismatch) |
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145 | v = ecb_bswap32 (v); |
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146 | |
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147 | *dst++ = v; |
| 132 | } |
148 | } |
| 133 | |
149 | |
| 134 | row += rowstride; |
150 | row += rowstride; |
| 135 | line += xi.bytes_per_line; |
151 | line += xi.bytes_per_line; |
| 136 | } |
152 | } |
