util: Describe, implement, and test the new D3D9 color formats.

1 files changed, 267 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/util/u_format_other.c b/src/gallium/auxiliary/util/u_format_other.c
new file mode 100644
index 00000000000..cecbe5e5a12
--- /dev/null
+++ b/src/gallium/auxiliary/util/u_format_other.c
@@ -0,0 +1,267 @@
+/**************************************************************************
+ *
+ * Copyright 2010 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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 above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ **************************************************************************/
+
+
+#include "u_math.h"
+#include "u_format_other.h"
+
+
+void
+util_format_r9g9b9e5_float_unpack_float(float *dst_row, unsigned dst_stride,
+                                        const uint8_t *src_row, unsigned src_stride,
+                                        unsigned width, unsigned height)
+{
+
+}
+
+void
+util_format_r9g9b9e5_float_pack_float(uint8_t *dst_row, unsigned dst_stride,
+                                      const float *src_row, unsigned src_stride,
+                                      unsigned width, unsigned height)
+{
+
+}
+
+void
+util_format_r9g9b9e5_float_fetch_float(float *dst, const uint8_t *src,
+                                       unsigned i, unsigned j)
+{
+
+}
+
+
+void
+util_format_r9g9b9e5_float_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride,
+                                         const uint8_t *src_row, unsigned src_stride,
+                                         unsigned width, unsigned height)
+{
+
+}
+
+
+void
+util_format_r9g9b9e5_float_pack_8unorm(uint8_t *dst_row, unsigned dst_stride,
+                                       const uint8_t *src_row, unsigned src_stride,
+                                       unsigned width, unsigned height)
+{
+
+}
+
+
+void
+util_format_r1_unorm_unpack_float(float *dst_row, unsigned dst_stride,
+                                  const uint8_t *src_row, unsigned src_stride,
+                                  unsigned width, unsigned height)
+{
+
+}
+
+
+void
+util_format_r1_unorm_pack_float(uint8_t *dst_row, unsigned dst_stride,
+                                const float *src_row, unsigned src_stride,
+                                unsigned width, unsigned height)
+{
+
+}
+
+
+void
+util_format_r1_unorm_fetch_float(float *dst, const uint8_t *src,
+                                 unsigned i, unsigned j)
+{
+
+}
+
+
+void
+util_format_r1_unorm_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride,
+                                   const uint8_t *src_row, unsigned src_stride,
+                                   unsigned width, unsigned height)
+{
+
+}
+
+
+void
+util_format_r1_unorm_pack_8unorm(uint8_t *dst_row, unsigned dst_stride,
+                                 const uint8_t *src_row, unsigned src_stride,
+                                 unsigned width, unsigned height)
+{
+}
+
+
+/*
+ * PIPE_FORMAT_R8G8Bx_SNORM
+ *
+ * A.k.a. D3DFMT_CxV8U8
+ */
+
+
+void
+util_format_r8g8bx_snorm_unpack_float(float *dst_row, unsigned dst_stride,
+                                      const uint8_t *src_row, unsigned src_stride,
+                                      unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for(y = 0; y < height; y += 1) {
+      float *dst = dst_row;
+      const uint16_t *src = (const uint16_t *)src_row;
+      for(x = 0; x < width; x += 1) {
+         uint16_t value = *src++;
+         int16_t r, g;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         r = ((int16_t)(value << 8)) >> 8;
+         g = ((int16_t)(value << 0)) >> 8;
+
+         dst[0] = (float)(r * (1.0f/0x7f)); /* r */
+         dst[1] = (float)(g * (1.0f/0x7f)); /* g */
+         dst[2] = sqrtf(1.0f - dst[0] * dst[0] - dst[1] * dst[1]); /* b */
+         dst[3] = 1.0f; /* a */
+         dst += 4;
+      }
+      src_row += src_stride;
+      dst_row += dst_stride/sizeof(*dst_row);
+   }
+}
+
+
+void
+util_format_r8g8bx_snorm_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride,
+                                       const uint8_t *src_row, unsigned src_stride,
+                                       unsigned width, unsigned height)
+{
+   unsigned x, y;
+   for(y = 0; y < height; y += 1) {
+      uint8_t *dst = dst_row;
+      const uint16_t *src = (const uint16_t *)src_row;
+      for(x = 0; x < width; x += 1) {
+         uint16_t value = *src++;
+         int16_t r, g;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         r = ((int16_t)(value << 8)) >> 8;
+         g = ((int16_t)(value << 0)) >> 8;
+
+         dst[0] = (uint8_t)(((uint16_t)MAX2(r, 0)) * 0xff / 0x7f); /* r */
+         dst[1] = (uint8_t)(((uint16_t)MAX2(g, 0)) * 0xff / 0x7f); /* g */
+         dst[2] = (uint8_t)sqrtf(0x7f*0x7f - r * r - g * g) * 0xff / 0x7f; /* b */
+         dst[3] = 255; /* a */
+         dst += 4;
+      }
+      src_row += src_stride;
+      dst_row += dst_stride/sizeof(*dst_row);
+   }
+}
+
+
+void
+util_format_r8g8bx_snorm_pack_float(uint8_t *dst_row, unsigned dst_stride,
+                                    const float *src_row, unsigned src_stride,
+                                    unsigned width, unsigned height)
+{
+   unsigned x, y;
+   for(y = 0; y < height; y += 1) {
+      const float *src = src_row;
+      uint16_t *dst = (uint16_t *)dst_row;
+      for(x = 0; x < width; x += 1) {
+         uint16_t value = 0;
+
+         value |= (uint16_t)(((int8_t)(CLAMP(src[0], -1, 1) * 0x7f)) & 0xff) ;
+         value |= (uint16_t)((((int8_t)(CLAMP(src[1], -1, 1) * 0x7f)) & 0xff) << 8) ;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst++ = value;
+
+         src += 4;
+      }
+      dst_row += dst_stride;
+      src_row += src_stride/sizeof(*src_row);
+   }
+}
+
+
+void
+util_format_r8g8bx_snorm_pack_8unorm(uint8_t *dst_row, unsigned dst_stride,
+                                     const uint8_t *src_row, unsigned src_stride,
+                                     unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for(y = 0; y < height; y += 1) {
+      const uint8_t *src = src_row;
+      uint16_t *dst = (uint16_t *)dst_row;
+      for(x = 0; x < width; x += 1) {
+         uint16_t value = 0;
+
+         value |= src[0] >> 1;
+         value |= (src[1] >> 1) << 8;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst++ = value;
+
+         src += 4;
+      }
+      dst_row += dst_stride;
+      src_row += src_stride/sizeof(*src_row);
+   }
+}
+
+
+void
+util_format_r8g8bx_snorm_fetch_float(float *dst, const uint8_t *src,
+                                     unsigned i, unsigned j)
+{
+   uint16_t value = *(const uint16_t *)src;
+   int16_t r, g;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+   value = util_bswap32(value);
+#endif
+
+   r = ((int16_t)(value << 8)) >> 8;
+   g = ((int16_t)(value << 0)) >> 8;
+
+   dst[0] = r * (1.0f/0x7f); /* r */
+   dst[1] = g * (1.0f/0x7f); /* g */
+   dst[2] = sqrtf(1.0f - dst[0] * dst[0] - dst[1] * dst[1]); /* b */
+   dst[3] = 1.0f; /* a */
+}