icd: add common format functions

3 files changed, 163 insertions, 1 deletions

diff --git a/icd/common/CMakeLists.txt b/icd/common/CMakeLists.txt
index 45d2ad8f..7c8e8352 100644
--- a/icd/common/CMakeLists.txt
+++ b/icd/common/CMakeLists.txt
@@ -9,5 +9,5 @@ add_custom_command(OUTPUT icd-dispatch-entrypoints.c
 	           DEPENDS ${PROJECT_SOURCE_DIR}/xgl-generate.py
 	                   ${PROJECT_SOURCE_DIR}/xgl.py)
 
-add_library(icd OBJECT icd.c icd-dispatch-entrypoints.c icd-dispatch-table.h)
+add_library(icd OBJECT icd.c icd-dispatch-entrypoints.c icd-dispatch-table.h icd-format.c)
 set_target_properties(icd PROPERTIES POSITION_INDEPENDENT_CODE ON)
diff --git a/icd/common/icd-format.c b/icd/common/icd-format.c
new file mode 100644
index 00000000..dc17476a
--- /dev/null
+++ b/icd/common/icd-format.c
@@ -0,0 +1,69 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2014 LunarG, Inc.
+ *
+ * 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, sublicense,
+ * 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 above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * 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
+ * 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.
+ *
+ * Authors:
+ *    Chia-I Wu <olv@lunarg.com>
+ */
+
+#include "icd-format.h"
+
+static const struct icd_format_info {
+    XGL_SIZE size;
+} icd_format_table[XGL_MAX_CH_FMT + 1] = {
+    [XGL_CH_FMT_UNDEFINED]      = { 0 },
+    [XGL_CH_FMT_R4G4]           = { 1 },
+    [XGL_CH_FMT_R4G4B4A4]       = { 2 },
+    [XGL_CH_FMT_R5G6B5]         = { 2 },
+    [XGL_CH_FMT_B5G6R5]         = { 2 },
+    [XGL_CH_FMT_R5G5B5A1]       = { 2 },
+    [XGL_CH_FMT_R8]             = { 1 },
+    [XGL_CH_FMT_R8G8]           = { 2 },
+    [XGL_CH_FMT_R8G8B8A8]       = { 4 },
+    [XGL_CH_FMT_B8G8R8A8]       = { 4 },
+    [XGL_CH_FMT_R10G11B11]      = { 4 },
+    [XGL_CH_FMT_R11G11B10]      = { 4 },
+    [XGL_CH_FMT_R10G10B10A2]    = { 4 },
+    [XGL_CH_FMT_R16]            = { 2 },
+    [XGL_CH_FMT_R16G16]         = { 4 },
+    [XGL_CH_FMT_R16G16B16A16]   = { 8 },
+    [XGL_CH_FMT_R32]            = { 4 },
+    [XGL_CH_FMT_R32G32]         = { 8 },
+    [XGL_CH_FMT_R32G32B32]      = { 12 },
+    [XGL_CH_FMT_R32G32B32A32]   = { 16 },
+    [XGL_CH_FMT_R16G8]          = { 3 },
+    [XGL_CH_FMT_R32G8]          = { 5 },
+    [XGL_CH_FMT_R9G9B9E5]       = { 4 },
+    [XGL_CH_FMT_BC1]            = { 8 },
+    [XGL_CH_FMT_BC2]            = { 16 },
+    [XGL_CH_FMT_BC3]            = { 16 },
+    [XGL_CH_FMT_BC4]            = { 8 },
+    [XGL_CH_FMT_BC5]            = { 16 },
+    [XGL_CH_FMT_BC6U]           = { 16 },
+    [XGL_CH_FMT_BC6S]           = { 16 },
+    [XGL_CH_FMT_BC7]            = { 16 },
+};
+
+unsigned int icd_format_get_size(XGL_FORMAT format)
+{
+    return icd_format_table[format.channelFormat].size;
+}
diff --git a/icd/common/icd-format.h b/icd/common/icd-format.h
new file mode 100644
index 00000000..8c11680d
--- /dev/null
+++ b/icd/common/icd-format.h
@@ -0,0 +1,93 @@
+/*
+ * XGL
+ *
+ * Copyright (C) 2014 LunarG, Inc.
+ *
+ * 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, sublicense,
+ * 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 above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * 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
+ * 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.
+ */
+
+#ifndef ICD_FORMAT_H
+#define ICD_FORMAT_H
+
+#include <stdbool.h>
+#include "icd.h"
+
+static inline bool icd_format_is_undef(XGL_FORMAT format)
+{
+    return (format.numericFormat == XGL_NUM_FMT_UNDEFINED);
+}
+
+static inline bool icd_format_is_ds(XGL_FORMAT format)
+{
+    return (format.numericFormat == XGL_NUM_FMT_DS);
+}
+
+static inline bool icd_format_is_color(XGL_FORMAT format)
+{
+    return !(icd_format_is_undef(format) || icd_format_is_ds(format));
+}
+
+static inline bool icd_format_is_norm(XGL_FORMAT format)
+{
+    return (format.numericFormat == XGL_NUM_FMT_UNORM ||
+            format.numericFormat == XGL_NUM_FMT_SNORM);
+};
+
+static inline bool icd_format_is_int(XGL_FORMAT format)
+{
+    return (format.numericFormat == XGL_NUM_FMT_UINT ||
+            format.numericFormat == XGL_NUM_FMT_SINT);
+}
+
+static inline bool icd_format_is_float(XGL_FORMAT format)
+{
+    return (format.numericFormat == XGL_NUM_FMT_FLOAT);
+}
+
+static inline bool icd_format_is_srgb(XGL_FORMAT format)
+{
+    return (format.numericFormat == XGL_NUM_FMT_SRGB);
+}
+
+static inline bool icd_format_is_compressed(XGL_FORMAT format)
+{
+    switch (format.channelFormat) {
+    case XGL_CH_FMT_BC1:
+    case XGL_CH_FMT_BC2:
+    case XGL_CH_FMT_BC3:
+    case XGL_CH_FMT_BC4:
+    case XGL_CH_FMT_BC5:
+    case XGL_CH_FMT_BC6U:
+    case XGL_CH_FMT_BC6S:
+    case XGL_CH_FMT_BC7:
+        return true;
+    default:
+        return false;
+    }
+}
+
+static inline bool icd_format_get_block_width(XGL_FORMAT format)
+{
+    /* all compressed formats use 4x4 blocks */
+    return (icd_format_is_compressed(format)) ? 4 : 1;
+}
+
+unsigned int icd_format_get_size(XGL_FORMAT format);
+
+#endif /* ICD_FORMAT_H */