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FS-7506 improve anti-aliasing when use a NULL bgcolor for transparent text
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@ -653,14 +653,13 @@ static void draw_bitmap(switch_img_txt_handle_t *handle, switch_image_t *img, FT
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if (bitmap->width == 0) return;
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switch_color_rgb2yuv(&handle->color, &yuv_color);
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switch (bitmap->pixel_mode) {
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case FT_PIXEL_MODE_GRAY: // it should always be GRAY since we use FT_LOAD_RENDER?
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break;
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case FT_PIXEL_MODE_NONE:
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case FT_PIXEL_MODE_MONO:
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{
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switch_color_rgb2yuv(&handle->color, &yuv_color);
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for ( j = y, q = 0; j < y_max; j++, q++ ) {
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for ( i = x, p = 0; i < x_max; i++, p++ ) {
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@ -693,9 +692,16 @@ static void draw_bitmap(switch_img_txt_handle_t *handle, switch_image_t *img, FT
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if (handle->use_bgcolor) {
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switch_img_draw_pixel(img, i, j, &handle->gradient_table[gradient * MAX_GRADIENT / 256]);
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} else {
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if (gradient > 128) {
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switch_img_draw_pixel(img, i, j, &yuv_color);
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}
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switch_rgb_color_t rgb_color;
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switch_rgb_color_t c;
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switch_img_get_rgb_pixel(img, &rgb_color, i, j);
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c.r = ((rgb_color.r * (255 - gradient)) >> 8) + ((handle->color.r * gradient) >> 8);
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c.g = ((rgb_color.g * (255 - gradient)) >> 8) + ((handle->color.g * gradient) >> 8);
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c.b = ((rgb_color.b * (255 - gradient)) >> 8) + ((handle->color.b * gradient) >> 8);
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switch_color_rgb2yuv(&c, &yuv_color);
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switch_img_draw_pixel(img, i, j, &yuv_color);
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}
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}
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}
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