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@@ -34,7 +34,7 @@ |
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/* pixel mode constants */
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typedef enum grPixelMode
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{
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- gr_pixel_mode_none = 0,
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+ gr_pixel_mode_none = 0, /* driver inquiry mode */
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gr_pixel_mode_mono, /* monochrome bitmaps */
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gr_pixel_mode_pal4, /* 4-bit paletted - 16 colors */
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gr_pixel_mode_pal8, /* 8-bit paletted - 256 colors */
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@@ -221,7 +221,8 @@ |
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* bitmap with fewer levels of grays, as this would much probably
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* give unpleasant results..
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*
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- * This function performs clipping.
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+ * This function performs clipping. This function does not implement
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+ * gamma correction.
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*
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**********************************************************************/
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@@ -378,7 +379,7 @@ |
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* "device chain"
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*
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* <Fields>
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- * name :: ASCII name of the device, e.g. "x11", "os2pm", etc..
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+ * name :: ASCII name of the device, e.g. "x11", "win32", etc..
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* device :: handle to the device descriptor.
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* next :: next element in chain
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*
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@@ -467,17 +468,9 @@ |
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* error code. 0 means success. invalid device name otherwise
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*
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* <Note>
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- * All drivers are _required_ to support at least the following
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- * pixel formats :
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- *
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- * - gr_pixel_mode_mono : i.e. monochrome bitmaps
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- * - gr_pixel_mode_gray : with any number of gray levels between
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- * 2 and 256.
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- *
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- * the pixel modes do not provide the number of grays in the case
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- * of "gray" devices. You should try to create a surface with the
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- * maximal number (256, that is) and see the value returned in
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- * the bitmap descriptor.
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+ * This feature is not implemented in the common drivers. Use
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+ * grNewSurface with gr_pixel_mode.none instead to let the driver
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+ * set the mode.
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*
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**********************************************************************/
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@@ -510,15 +503,11 @@ |
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* handle to the corresponding surface object. 0 in case of error
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*
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* <Note>
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- * If the requsted mode is gr_pixel_mode_mono, the driver can choose
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- * a mode that is convenient for the driver.
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+ * If the requsted mode is gr_pixel_mode_none, the driver chooses
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+ * a mode that is convenient for the device.
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*
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* All drivers are _required_ to support at least the following
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- * pixel formats :
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- *
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- * - gr_pixel_mode_mono : i.e. monochrome bitmaps
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- * - gr_pixel_mode_gray : with any number of gray levels between
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- * 2 and 256.
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+ * pixel formats: gray, rgb555, rgb565, rgb24, or rgb32.
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*
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* This function might change the bitmap descriptor's fields. For
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* example, when displaying a full-screen surface, the bitmap's
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@@ -604,9 +593,8 @@ |
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* as 8-bit (gray) bitmaps, or for individual color channels in various
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* LCD arrangements.
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*
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- * It also handles mono and BGRA bitmaps as special cases.
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- *
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- * This function performs clipping.
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+ * This function performs clipping. It also handles mono and BGRA
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+ * bitmaps without ganna correction.
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*
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**********************************************************************/
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