diff options
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/main/format_unpack.c | 83 | ||||
| -rw-r--r-- | src/mesa/main/format_unpack.h | 5 |
2 files changed, 87 insertions, 1 deletions
diff --git a/src/mesa/main/format_unpack.c b/src/mesa/main/format_unpack.c index c9d793f66cf..9cc8f4dbac8 100644 --- a/src/mesa/main/format_unpack.c +++ b/src/mesa/main/format_unpack.c @@ -4264,6 +4264,83 @@ _mesa_unpack_uint_24_8_depth_stencil_row(mesa_format format, GLuint n, } } +static void +unpack_float_32_uint_24_8_Z24_UNORM_S8_UINT(const GLuint *src, + GLuint *dst, GLuint n) +{ + GLuint i; + struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst; + const GLdouble scale = 1.0 / (GLdouble) 0xffffff; + + for (i = 0; i < n; i++) { + const GLuint z24 = src[i] & 0xffffff; + d[i].z = z24 * scale; + d[i].x24s8 = src[i] >> 24; + assert(d[i].z >= 0.0f); + assert(d[i].z <= 1.0f); + } +} + +static void +unpack_float_32_uint_24_8_Z32_FLOAT_S8X24_UINT(const GLuint *src, + GLuint *dst, GLuint n) +{ + memcpy(dst, src, n * sizeof(struct z32f_x24s8)); +} + +static void +unpack_float_32_uint_24_8_S8_UINT_Z24_UNORM(const GLuint *src, + GLuint *dst, GLuint n) +{ + GLuint i; + struct z32f_x24s8 *d = (struct z32f_x24s8 *) dst; + const GLdouble scale = 1.0 / (GLdouble) 0xffffff; + + for (i = 0; i < n; i++) { + const GLuint z24 = src[i] >> 8; + d[i].z = z24 * scale; + d[i].x24s8 = src[i] & 0xff; + assert(d[i].z >= 0.0f); + assert(d[i].z <= 1.0f); + } +} + +/** + * Unpack depth/stencil returning as GL_FLOAT_32_UNSIGNED_INT_24_8_REV. + * \param format the source data format + * + * In GL_FLOAT_32_UNSIGNED_INT_24_8_REV lower 4 bytes contain float + * component and higher 4 bytes contain packed 24-bit and 8-bit + * components. + * + * 31 30 29 28 ... 4 3 2 1 0 31 30 29 ... 9 8 7 6 5 ... 2 1 0 + * +-------------------------+ +--------------------------------+ + * | Float Component | | Unused | 8 bit stencil | + * +-------------------------+ +--------------------------------+ + * lower 4 bytes higher 4 bytes + */ +void +_mesa_unpack_float_32_uint_24_8_depth_stencil_row(mesa_format format, GLuint n, + const void *src, GLuint *dst) +{ + switch (format) { + case MESA_FORMAT_S8_UINT_Z24_UNORM: + unpack_float_32_uint_24_8_S8_UINT_Z24_UNORM(src, dst, n); + break; + case MESA_FORMAT_Z24_UNORM_S8_UINT: + unpack_float_32_uint_24_8_Z24_UNORM_S8_UINT(src, dst, n); + break; + case MESA_FORMAT_Z32_FLOAT_S8X24_UINT: + unpack_float_32_uint_24_8_Z32_FLOAT_S8X24_UINT(src, dst, n); + break; + default: + _mesa_problem(NULL, + "bad format %s in _mesa_unpack_uint_24_8_depth_stencil_row", + _mesa_get_format_name(format)); + return; + } +} + /** * Unpack depth/stencil * \param format the source data format @@ -4274,12 +4351,16 @@ _mesa_unpack_depth_stencil_row(mesa_format format, GLuint n, const void *src, GLenum type, GLuint *dst) { - assert(type == GL_UNSIGNED_INT_24_8); + assert(type == GL_UNSIGNED_INT_24_8 || + type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV); switch (type) { case GL_UNSIGNED_INT_24_8: _mesa_unpack_uint_24_8_depth_stencil_row(format, n, src, dst); break; + case GL_FLOAT_32_UNSIGNED_INT_24_8_REV: + _mesa_unpack_float_32_uint_24_8_depth_stencil_row(format, n, src, dst); + break; default: _mesa_problem(NULL, "bad type 0x%x in _mesa_unpack_depth_stencil_row", diff --git a/src/mesa/main/format_unpack.h b/src/mesa/main/format_unpack.h index 5904a28e755..51f97df4d77 100644 --- a/src/mesa/main/format_unpack.h +++ b/src/mesa/main/format_unpack.h @@ -64,6 +64,11 @@ _mesa_unpack_uint_24_8_depth_stencil_row(mesa_format format, GLuint n, const void *src, GLuint *dst); void +_mesa_unpack_float_32_uint_24_8_depth_stencil_row(mesa_format format, + GLuint n, + const void *src, + GLuint *dst); +void _mesa_unpack_depth_stencil_row(mesa_format format, GLuint n, const void *src, GLenum type, GLuint *dst); |