/*
* Mesa 3-D graphics library
- * Version: 7.3
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
*/
#include "config.h"
#include "macros.h"
-#include "mtypes.h"
-
-
-/** \def BYTE_TO_CHAN
- * Convert from GLbyte to GLchan */
-
-/** \def UBYTE_TO_CHAN
- * Convert from GLubyte to GLchan */
-
-/** \def SHORT_TO_CHAN
- * Convert from GLshort to GLchan */
-
-/** \def USHORT_TO_CHAN
- * Convert from GLushort to GLchan */
-
-/** \def INT_TO_CHAN
- * Convert from GLint to GLchan */
-
-/** \def UINT_TO_CHAN
- * Convert from GLuint to GLchan */
-
-/** \def CHAN_TO_UBYTE
- * Convert from GLchan to GLubyte */
-
-/** \def CHAN_TO_FLOAT
- * Convert from GLchan to GLfloat */
-
-/** \def CLAMPED_FLOAT_TO_CHAN
- * Convert from GLclampf to GLchan */
-
-/** \def UNCLAMPED_FLOAT_TO_CHAN
- * Convert from GLfloat to GLchan */
-
-/** \def COPY_CHAN4
- * Copy a GLchan[4] array */
-
-#if CHAN_BITS == 8
-
-#define BYTE_TO_CHAN(b) ((b) < 0 ? 0 : (GLchan) (b))
-#define UBYTE_TO_CHAN(b) (b)
-#define SHORT_TO_CHAN(s) ((s) < 0 ? 0 : (GLchan) ((s) >> 7))
-#define USHORT_TO_CHAN(s) ((GLchan) ((s) >> 8))
-#define INT_TO_CHAN(i) ((i) < 0 ? 0 : (GLchan) ((i) >> 23))
-#define UINT_TO_CHAN(i) ((GLchan) ((i) >> 24))
-
-#define CHAN_TO_UBYTE(c) (c)
-#define CHAN_TO_FLOAT(c) UBYTE_TO_FLOAT(c)
-
-#define CLAMPED_FLOAT_TO_CHAN(c, f) CLAMPED_FLOAT_TO_UBYTE(c, f)
-#define UNCLAMPED_FLOAT_TO_CHAN(c, f) UNCLAMPED_FLOAT_TO_UBYTE(c, f)
-
-#define COPY_CHAN4(DST, SRC) COPY_4UBV(DST, SRC)
-
-#elif CHAN_BITS == 16
-
-#define BYTE_TO_CHAN(b) ((b) < 0 ? 0 : (((GLchan) (b)) * 516))
-#define UBYTE_TO_CHAN(b) ((((GLchan) (b)) << 8) | ((GLchan) (b)))
-#define SHORT_TO_CHAN(s) ((s) < 0 ? 0 : (GLchan) (s))
-#define USHORT_TO_CHAN(s) (s)
-#define INT_TO_CHAN(i) ((i) < 0 ? 0 : (GLchan) ((i) >> 15))
-#define UINT_TO_CHAN(i) ((GLchan) ((i) >> 16))
-
-#define CHAN_TO_UBYTE(c) ((c) >> 8)
-#define CHAN_TO_FLOAT(c) ((GLfloat) ((c) * (1.0 / CHAN_MAXF)))
-
-#define CLAMPED_FLOAT_TO_CHAN(c, f) CLAMPED_FLOAT_TO_USHORT(c, f)
-#define UNCLAMPED_FLOAT_TO_CHAN(c, f) UNCLAMPED_FLOAT_TO_USHORT(c, f)
-
-#define COPY_CHAN4(DST, SRC) COPY_4V(DST, SRC)
-
-#elif CHAN_BITS == 32
-
-/* XXX floating-point color channels not fully thought-out */
-#define BYTE_TO_CHAN(b) ((GLfloat) ((b) * (1.0F / 127.0F)))
-#define UBYTE_TO_CHAN(b) ((GLfloat) ((b) * (1.0F / 255.0F)))
-#define SHORT_TO_CHAN(s) ((GLfloat) ((s) * (1.0F / 32767.0F)))
-#define USHORT_TO_CHAN(s) ((GLfloat) ((s) * (1.0F / 65535.0F)))
-#define INT_TO_CHAN(i) ((GLfloat) ((i) * (1.0F / 2147483647.0F)))
-#define UINT_TO_CHAN(i) ((GLfloat) ((i) * (1.0F / 4294967295.0F)))
-
-#define CHAN_TO_UBYTE(c) FLOAT_TO_UBYTE(c)
-#define CHAN_TO_FLOAT(c) (c)
-
-#define CLAMPED_FLOAT_TO_CHAN(c, f) c = (f)
-#define UNCLAMPED_FLOAT_TO_CHAN(c, f) c = (f)
-
-#define COPY_CHAN4(DST, SRC) COPY_4V(DST, SRC)
-
-#else
-
-#error unexpected CHAN_BITS size
-
-#endif
/**
- * Convert 3 channels at once.
- *
- * \param dst pointer to destination GLchan[3] array.
- * \param f pointer to source GLfloat[3] array.
- *
- * \sa #UNCLAMPED_FLOAT_TO_CHAN.
+ * Convert four float values in [0,1] to ubytes in [0,255] with clamping.
*/
-#define UNCLAMPED_FLOAT_TO_RGB_CHAN(dst, f) \
-do { \
- UNCLAMPED_FLOAT_TO_CHAN((dst)[0], (f)[0]); \
- UNCLAMPED_FLOAT_TO_CHAN((dst)[1], (f)[1]); \
- UNCLAMPED_FLOAT_TO_CHAN((dst)[2], (f)[2]); \
-} while (0)
-
-
-/**
- * Convert 4 channels at once.
- *
- * \param dst pointer to destination GLchan[4] array.
- * \param f pointer to source GLfloat[4] array.
- *
- * \sa #UNCLAMPED_FLOAT_TO_CHAN.
- */
-#define UNCLAMPED_FLOAT_TO_RGBA_CHAN(dst, f) \
-do { \
- UNCLAMPED_FLOAT_TO_CHAN((dst)[0], (f)[0]); \
- UNCLAMPED_FLOAT_TO_CHAN((dst)[1], (f)[1]); \
- UNCLAMPED_FLOAT_TO_CHAN((dst)[2], (f)[2]); \
- UNCLAMPED_FLOAT_TO_CHAN((dst)[3], (f)[3]); \
-} while (0)
-
+static inline void
+_mesa_unclamped_float_rgba_to_ubyte(GLubyte dst[4], const GLfloat src[4])
+{
+ int i;
+ for (i = 0; i < 4; i++)
+ UNCLAMPED_FLOAT_TO_UBYTE(dst[i], src[i]);
+}
/**
* \name Generic color packing macros. All inputs should be GLubytes.
- *
- * \todo We may move these into texstore.h at some point.
*/
/*@{*/
#define PACK_COLOR_8888( X, Y, Z, W ) \
(((X) << 24) | ((Y) << 16) | ((Z) << 8) | (W))
-#define PACK_COLOR_8888_REV( X, Y, Z, W ) \
- (((W) << 24) | ((Z) << 16) | ((Y) << 8) | (X))
-
-#define PACK_COLOR_888( X, Y, Z ) \
- (((X) << 16) | ((Y) << 8) | (Z))
-
#define PACK_COLOR_565( X, Y, Z ) \
((((X) & 0xf8) << 8) | (((Y) & 0xfc) << 3) | (((Z) & 0xf8) >> 3))
-#define PACK_COLOR_565_REV( X, Y, Z ) \
- (((X) & 0xf8) | ((Y) & 0xe0) >> 5 | (((Y) & 0x1c) << 11) | (((Z) & 0xf8) << 5))
-
-#define PACK_COLOR_5551( R, G, B, A ) \
- ((((R) & 0xf8) << 8) | (((G) & 0xf8) << 3) | (((B) & 0xf8) >> 2) | \
- ((A) ? 1 : 0))
-
#define PACK_COLOR_1555( A, B, G, R ) \
((((B) & 0xf8) << 7) | (((G) & 0xf8) << 2) | (((R) & 0xf8) >> 3) | \
- ((A) ? 0x8000 : 0))
-
-#define PACK_COLOR_1555_REV( A, B, G, R ) \
- ((((B) & 0xf8) >> 1) | (((G) & 0xc0) >> 6) | (((G) & 0x38) << 10) | (((R) & 0xf8) << 5) | \
- ((A) ? 0x80 : 0))
+ (((A) & 0x80) << 8))
#define PACK_COLOR_4444( R, G, B, A ) \
((((R) & 0xf0) << 8) | (((G) & 0xf0) << 4) | ((B) & 0xf0) | ((A) >> 4))
-#define PACK_COLOR_4444_REV( R, G, B, A ) \
- ((((B) & 0xf0) << 8) | (((A) & 0xf0) << 4) | ((R) & 0xf0) | ((G) >> 4))
-
#define PACK_COLOR_88( L, A ) \
(((L) << 8) | (A))
-#define PACK_COLOR_88_REV( L, A ) \
- (((A) << 8) | (L))
-
-#define PACK_COLOR_1616( L, A ) \
- (((L) << 16) | (A))
-
-#define PACK_COLOR_1616_REV( L, A ) \
- (((A) << 16) | (L))
-
-#define PACK_COLOR_332( R, G, B ) \
- (((R) & 0xe0) | (((G) & 0xe0) >> 3) | (((B) & 0xc0) >> 6))
-
-#define PACK_COLOR_233( B, G, R ) \
- (((B) & 0xc0) | (((G) & 0xe0) >> 2) | (((R) & 0xe0) >> 5))
-
/*@}*/
projects / mesa.git / blobdiff