mesa: initial support for unnormalized integer texture formats

As defined by GL_EXT_texture_integer.

1 files changed, 91 insertions, 1 deletions

diff --git a/src/mesa/main/formats.c b/src/mesa/main/formats.c
index 3671140e859..49463fcc3c2 100644
--- a/src/mesa/main/formats.c
+++ b/src/mesa/main/formats.c
@@ -48,7 +48,7 @@ struct gl_format_info
 
    /**
     * Logical data type: one of  GL_UNSIGNED_NORMALIZED, GL_SIGNED_NORMALED,
-    * GL_UNSIGNED_INT, GL_SIGNED_INT, GL_FLOAT.
+    * GL_UNSIGNED_INT, GL_INT, GL_FLOAT.
     */
    GLenum DataType;
 
@@ -628,6 +628,66 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
       0, 16, 0, 0, 0,
       1, 1, 2
    },
+
+   /* unnormalized signed int formats */
+   {
+      MESA_FORMAT_RGBA_INT8,
+      "MESA_FORMAT_RGBA_INT8",
+      GL_RGBA,
+      GL_INT,
+      8, 8, 8, 8,
+      0, 0, 0, 0, 0,
+      1, 1, 4
+   },
+   {
+      MESA_FORMAT_RGBA_INT16,
+      "MESA_FORMAT_RGBA_INT16",
+      GL_RGBA,
+      GL_INT,
+      16, 16, 16, 16,
+      0, 0, 0, 0, 0,
+      1, 1, 8
+   },
+   {
+      MESA_FORMAT_RGBA_INT32,
+      "MESA_FORMAT_RGBA_INT32",
+      GL_RGBA,
+      GL_INT,
+      32, 32, 32, 32,
+      0, 0, 0, 0, 0,
+      1, 1, 16
+   },
+
+   /* unnormalized unsigned int formats */
+   {
+      MESA_FORMAT_RGBA_UINT8,
+      "MESA_FORMAT_RGBA_UINT8",
+      GL_RGBA,
+      GL_UNSIGNED_INT,
+      8, 8, 8, 8,
+      0, 0, 0, 0, 0,
+      1, 1, 4
+   },
+   {
+      MESA_FORMAT_RGBA_UINT16,
+      "MESA_FORMAT_RGBA_UINT16",
+      GL_RGBA,
+      GL_UNSIGNED_INT,
+      16, 16, 16, 16,
+      0, 0, 0, 0, 0,
+      1, 1, 8
+   },
+   {
+      MESA_FORMAT_RGBA_UINT32,
+      "MESA_FORMAT_RGBA_UINT32",
+      GL_RGBA,
+      GL_UNSIGNED_INT,
+      32, 32, 32, 32,
+      0, 0, 0, 0, 0,
+      1, 1, 16
+   },
+
+
    {
       MESA_FORMAT_DUDV8,
       "MESA_FORMAT_DUDV8",
@@ -1230,6 +1290,36 @@ _mesa_format_to_type_and_comps(gl_format format,
       *comps = 1;
       return;
 
+   case MESA_FORMAT_RGBA_INT8:
+      *datatype = GL_BYTE;
+      *comps = 4;
+      return;
+   case MESA_FORMAT_RGBA_INT16:
+      *datatype = GL_SHORT;
+      *comps = 4;
+      return;
+   case MESA_FORMAT_RGBA_INT32:
+      *datatype = GL_INT;
+      *comps = 4;
+      return;
+
+   /**
+    * \name Non-normalized unsigned integer formats.
+    */
+   case MESA_FORMAT_RGBA_UINT8:
+      *datatype = GL_UNSIGNED_BYTE;
+      *comps = 4;
+      return;
+   case MESA_FORMAT_RGBA_UINT16:
+      *datatype = GL_UNSIGNED_SHORT;
+      *comps = 4;
+      return;
+   case MESA_FORMAT_RGBA_UINT32:
+      *datatype = GL_UNSIGNED_INT;
+      *comps = 4;
+      return;
+
+
    default:
       _mesa_problem(NULL, "bad format in _mesa_format_to_type_and_comps");
       *datatype = 0;