#include "pipe/p_compiler.h"
#include "pipe/p_format.h"
+#include "util/u_math.h"
/**
}
+/**
+ * Unpack RGBA from a packed pixel, returning values as ubytes in [0,255].
+ */
+static INLINE void
+util_unpack_color_ub(enum pipe_format format, const void *src,
+ ubyte *r, ubyte *g, ubyte *b, ubyte *a)
+{
+ switch (format) {
+ case PIPE_FORMAT_R8G8B8A8_UNORM:
+ {
+ uint p = ((const uint *) src)[0];
+ *r = (ubyte) ((p >> 24) & 0xff);
+ *g = (ubyte) ((p >> 16) & 0xff);
+ *b = (ubyte) ((p >> 8) & 0xff);
+ *a = (ubyte) ((p >> 0) & 0xff);
+ }
+ return;
+ case PIPE_FORMAT_R8G8B8X8_UNORM:
+ {
+ uint p = ((const uint *) src)[0];
+ *r = (ubyte) ((p >> 24) & 0xff);
+ *g = (ubyte) ((p >> 16) & 0xff);
+ *b = (ubyte) ((p >> 8) & 0xff);
+ *a = (ubyte) 0xff;
+ }
+ return;
+ case PIPE_FORMAT_A8R8G8B8_UNORM:
+ {
+ uint p = ((const uint *) src)[0];
+ *r = (ubyte) ((p >> 16) & 0xff);
+ *g = (ubyte) ((p >> 8) & 0xff);
+ *b = (ubyte) ((p >> 0) & 0xff);
+ *a = (ubyte) ((p >> 24) & 0xff);
+ }
+ return;
+ case PIPE_FORMAT_X8R8G8B8_UNORM:
+ {
+ uint p = ((const uint *) src)[0];
+ *r = (ubyte) ((p >> 16) & 0xff);
+ *g = (ubyte) ((p >> 8) & 0xff);
+ *b = (ubyte) ((p >> 0) & 0xff);
+ *a = (ubyte) 0xff;
+ }
+ return;
+ case PIPE_FORMAT_B8G8R8A8_UNORM:
+ {
+ uint p = ((const uint *) src)[0];
+ *r = (ubyte) ((p >> 8) & 0xff);
+ *g = (ubyte) ((p >> 16) & 0xff);
+ *b = (ubyte) ((p >> 24) & 0xff);
+ *a = (ubyte) ((p >> 0) & 0xff);
+ }
+ return;
+ case PIPE_FORMAT_B8G8R8X8_UNORM:
+ {
+ uint p = ((const uint *) src)[0];
+ *r = (ubyte) ((p >> 8) & 0xff);
+ *g = (ubyte) ((p >> 16) & 0xff);
+ *b = (ubyte) ((p >> 24) & 0xff);
+ *a = (ubyte) 0xff;
+ }
+ return;
+ case PIPE_FORMAT_R5G6B5_UNORM:
+ {
+ ushort p = ((const ushort *) src)[0];
+ *r = (ubyte) (((p >> 8) & 0xf8) | ((p >> 13) & 0x7));
+ *g = (ubyte) (((p >> 3) & 0xfc) | ((p >> 9) & 0x3));
+ *b = (ubyte) (((p << 3) & 0xf8) | ((p >> 2) & 0x7));
+ *a = (ubyte) 0xff;
+ }
+ return;
+ case PIPE_FORMAT_A1R5G5B5_UNORM:
+ {
+ ushort p = ((const ushort *) src)[0];
+ *r = (ubyte) (((p >> 7) & 0xf8) | ((p >> 12) & 0x7));
+ *g = (ubyte) (((p >> 2) & 0xf8) | ((p >> 7) & 0x7));
+ *b = (ubyte) (((p << 3) & 0xf8) | ((p >> 2) & 0x7));
+ *a = (ubyte) (0xff * (p >> 15));
+ }
+ return;
+ case PIPE_FORMAT_A4R4G4B4_UNORM:
+ {
+ ushort p = ((const ushort *) src)[0];
+ *r = (ubyte) (((p >> 4) & 0xf0) | ((p >> 8) & 0xf));
+ *g = (ubyte) (((p >> 0) & 0xf0) | ((p >> 4) & 0xf));
+ *b = (ubyte) (((p << 4) & 0xf0) | ((p >> 0) & 0xf));
+ *a = (ubyte) (((p >> 8) & 0xf0) | ((p >> 12) & 0xf));
+ }
+ return;
+ case PIPE_FORMAT_A8_UNORM:
+ {
+ ubyte p = ((const ubyte *) src)[0];
+ *r = *g = *b = (ubyte) 0xff;
+ *a = p;
+ }
+ return;
+ case PIPE_FORMAT_L8_UNORM:
+ {
+ ubyte p = ((const ubyte *) src)[0];
+ *r = *g = *b = p;
+ *a = (ubyte) 0xff;
+ }
+ return;
+ case PIPE_FORMAT_I8_UNORM:
+ {
+ ubyte p = ((const ubyte *) src)[0];
+ *r = *g = *b = *a = p;
+ }
+ return;
+ case PIPE_FORMAT_R32G32B32A32_FLOAT:
+ {
+ const float *p = (const float *) src;
+ *r = float_to_ubyte(p[0]);
+ *g = float_to_ubyte(p[1]);
+ *b = float_to_ubyte(p[2]);
+ *a = float_to_ubyte(p[3]);
+ }
+ return;
+ case PIPE_FORMAT_R32G32B32_FLOAT:
+ {
+ const float *p = (const float *) src;
+ *r = float_to_ubyte(p[0]);
+ *g = float_to_ubyte(p[1]);
+ *b = float_to_ubyte(p[2]);
+ *a = (ubyte) 0xff;
+ }
+ return;
+
+ case PIPE_FORMAT_R32G32_FLOAT:
+ {
+ const float *p = (const float *) src;
+ *r = float_to_ubyte(p[0]);
+ *g = float_to_ubyte(p[1]);
+ *b = *a = (ubyte) 0xff;
+ }
+ return;
+
+ case PIPE_FORMAT_R32_FLOAT:
+ {
+ const float *p = (const float *) src;
+ *r = float_to_ubyte(p[0]);
+ *g = *b = *a = (ubyte) 0xff;
+ }
+ return;
+
+ /* XXX lots more cases to add */
+ default:
+ debug_print_format("gallium: unhandled format in util_unpack_color_ub()",
+ format);
+ assert(0);
+ }
+}
+
+
+
/**
* Note rgba outside [0,1] will be clamped for int pixel formats.
*/
if (pf_size_x(format) <= 8) {
/* format uses 8-bit components or less */
- UNCLAMPED_FLOAT_TO_UBYTE(r, rgba[0]);
- UNCLAMPED_FLOAT_TO_UBYTE(g, rgba[1]);
- UNCLAMPED_FLOAT_TO_UBYTE(b, rgba[2]);
- UNCLAMPED_FLOAT_TO_UBYTE(a, rgba[3]);
+ r = float_to_ubyte(rgba[0]);
+ g = float_to_ubyte(rgba[1]);
+ b = float_to_ubyte(rgba[2]);
+ a = float_to_ubyte(rgba[3]);
}
switch (format) {
static INLINE uint
util_pack_z(enum pipe_format format, double z)
{
+ if (z == 0.0)
+ return 0;
+
switch (format) {
case PIPE_FORMAT_Z16_UNORM:
+ if (z == 1.0)
+ return 0xffff;
return (uint) (z * 0xffff);
case PIPE_FORMAT_Z32_UNORM:
/* special-case to avoid overflow */
if (z == 1.0)
return 0xffffffff;
- else
- return (uint) (z * 0xffffffff);
+ return (uint) (z * 0xffffffff);
case PIPE_FORMAT_S8Z24_UNORM:
case PIPE_FORMAT_X8Z24_UNORM:
+ if (z == 1.0)
+ return 0xffffff;
return (uint) (z * 0xffffff);
case PIPE_FORMAT_Z24S8_UNORM:
case PIPE_FORMAT_Z24X8_UNORM:
+ if (z == 1.0)
+ return 0xffffff00;
return ((uint) (z * 0xffffff)) << 8;
default:
debug_print_format("gallium: unhandled format in util_pack_z()", format);
}
+/**
+ * Pack 4 ubytes into a 4-byte word
+ */
+static INLINE unsigned
+pack_ub4(ubyte b0, ubyte b1, ubyte b2, ubyte b3)
+{
+ return ((((unsigned int)b0) << 0) |
+ (((unsigned int)b1) << 8) |
+ (((unsigned int)b2) << 16) |
+ (((unsigned int)b3) << 24));
+}
+
+
+/**
+ * Pack/convert 4 floats into one 4-byte word.
+ */
+static INLINE unsigned
+pack_ui32_float4(float a, float b, float c, float d)
+{
+ return pack_ub4( float_to_ubyte(a),
+ float_to_ubyte(b),
+ float_to_ubyte(c),
+ float_to_ubyte(d) );
+}
+
+
+
#endif /* U_PACK_COLOR_H */
projects / mesa.git / blobdiff