mesa: implement new texture format I16

diff --git a/src/mesa/main/formats.c b/src/mesa/main/formats.c
index 81d907f7a0e259807384904065386f5d80fcd07d..08efde53ecadacec3db83c0ab305f80b545ff809 100644 (file)
--- a/src/mesa/main/formats.c
+++ b/src/mesa/main/formats.c
@@ -320,6 +320,15 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
       0, 8, 0, 0, 0,               /* Lum/Int/Index/Depth/StencilBits */
       1, 1, 1                      /* BlockWidth/Height,Bytes */
    },
+   {
+      MESA_FORMAT_I16,             /* Name */
+      "MESA_FORMAT_I16",           /* StrName */
+      GL_INTENSITY,                /* BaseFormat */
+      GL_UNSIGNED_NORMALIZED,      /* DataType */
+      0, 0, 0, 0,                  /* Red/Green/Blue/AlphaBits */
+      0, 16, 0, 0, 0,              /* Lum/Int/Index/Depth/StencilBits */
+      1, 1, 2                      /* BlockWidth/Height,Bytes */
+   },
    {
       MESA_FORMAT_CI8,             /* Name */
       "MESA_FORMAT_CI8",           /* StrName */
@@ -1317,6 +1326,7 @@ _mesa_format_to_type_and_comps(gl_format format,
    case MESA_FORMAT_R16:
    case MESA_FORMAT_A16:
    case MESA_FORMAT_L16:
+   case MESA_FORMAT_I16:
       *datatype = GL_UNSIGNED_SHORT;
       *comps = 1;
       return;

diff --git a/src/mesa/main/formats.h b/src/mesa/main/formats.h
index afc91e3da46f585964f861cf1f62d2715918f4c5..b8e76664f85f9db90001cf00f65027dc8c76efb1 100644 (file)
--- a/src/mesa/main/formats.h
+++ b/src/mesa/main/formats.h
@@ -76,6 +76,7 @@ typedef enum
    MESA_FORMAT_L8,             /*                               LLLL LLLL */
    MESA_FORMAT_L16,             /*                     LLLL LLLL LLLL LLLL */
    MESA_FORMAT_I8,             /*                               IIII IIII */
+   MESA_FORMAT_I16,             /*                     IIII IIII IIII IIII */
    MESA_FORMAT_CI8,            /*                               CCCC CCCC */
    MESA_FORMAT_YCBCR,          /*                     YYYY YYYY UorV UorV */
    MESA_FORMAT_YCBCR_REV,      /*                     UorV UorV YYYY YYYY */

diff --git a/src/mesa/main/texfetch.c b/src/mesa/main/texfetch.c
index 4791e367598d9e9caf491dff42c34817d169089a..77bbc91795f23b0855b2166eb5af0cf90af9a141 100644 (file)
--- a/src/mesa/main/texfetch.c
+++ b/src/mesa/main/texfetch.c
@@ -313,6 +313,13 @@ texfetch_funcs[MESA_FORMAT_COUNT] =
       fetch_texel_3d_f_i8,
       store_texel_i8
    },
+   {
+      MESA_FORMAT_I16,
+      fetch_texel_1d_f_i16,
+      fetch_texel_2d_f_i16,
+      fetch_texel_3d_f_i16,
+      store_texel_i16
+   },
    {
       MESA_FORMAT_CI8,
       fetch_texel_1d_f_ci8,

diff --git a/src/mesa/main/texfetch_tmp.h b/src/mesa/main/texfetch_tmp.h
index 0951f86b7ba9318e11374f8436f04d1f9c009dfd..0b69b69add5aab8795eda7d8dc8f96fbbc220089 100644 (file)
--- a/src/mesa/main/texfetch_tmp.h
+++ b/src/mesa/main/texfetch_tmp.h
@@ -1244,6 +1244,30 @@ static void store_texel_i8(struct gl_texture_image *texImage,
 #endif
 
 
+/* MESA_FORMAT_I16 ***********************************************************/
+
+/* Fetch texel from 1D, 2D or 3D i16 texture, return 4 GLchans */
+static void FETCH(f_i16)( const struct gl_texture_image *texImage,
+                          GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLushort *src = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   texel[RCOMP] =
+   texel[GCOMP] =
+   texel[BCOMP] =
+   texel[ACOMP] = USHORT_TO_FLOAT( src[0] );
+}
+
+#if DIM == 3
+static void store_texel_i16(struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLushort *rgba = (const GLushort *) texel;
+   GLushort *dst = TEXEL_ADDR(GLushort, texImage, i, j, k, 1);
+   *dst = rgba[RCOMP];
+}
+#endif
+
+
 /* MESA_FORMAT_CI8 ***********************************************************/
 
 /* Fetch CI texel from 1D, 2D or 3D ci8 texture, lookup the index in a

diff --git a/src/mesa/main/texformat.c b/src/mesa/main/texformat.c
index c7011431310cb9648d89ee872babc3ed299572df..82427176fb602f448b1769b35d3e93b78520bc6d 100644 (file)
--- a/src/mesa/main/texformat.c
+++ b/src/mesa/main/texformat.c
@@ -137,11 +137,13 @@ _mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat,
 
       case GL_INTENSITY:
       case GL_INTENSITY4:
-      case GL_INTENSITY12:
-      case GL_INTENSITY16:
       case GL_INTENSITY8:
          return MESA_FORMAT_I8;
 
+      case GL_INTENSITY12:
+      case GL_INTENSITY16:
+         return MESA_FORMAT_I16;
+
       case GL_COLOR_INDEX:
       case GL_COLOR_INDEX1_EXT:
       case GL_COLOR_INDEX2_EXT:

diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index e43636eafcbb6a3b9eeef72671d03ba1695e6f65..acb390b781058a9e3d9f4ab041107e9da33420bf 100644 (file)
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -2357,7 +2357,7 @@ _mesa_texstore_unorm1616(TEXSTORE_PARAMS)
 }
 
 
-/* Texstore for R16, A16, L16. */
+/* Texstore for R16, A16, L16, I16. */
 static GLboolean
 _mesa_texstore_unorm16(TEXSTORE_PARAMS)
 {
@@ -2367,7 +2367,8 @@ _mesa_texstore_unorm16(TEXSTORE_PARAMS)
 
    ASSERT(dstFormat == MESA_FORMAT_R16 ||
           dstFormat == MESA_FORMAT_A16 ||
-          dstFormat == MESA_FORMAT_L16);
+          dstFormat == MESA_FORMAT_L16 ||
+          dstFormat == MESA_FORMAT_I16);
    ASSERT(texelBytes == 2);
 
    if (!ctx->_ImageTransferState &&
@@ -4053,6 +4054,7 @@ texstore_funcs[MESA_FORMAT_COUNT] =
    { MESA_FORMAT_L8, _mesa_texstore_a8 },
    { MESA_FORMAT_L16, _mesa_texstore_unorm16 },
    { MESA_FORMAT_I8, _mesa_texstore_a8 },
+   { MESA_FORMAT_I16, _mesa_texstore_unorm16 },
    { MESA_FORMAT_CI8, _mesa_texstore_ci8 },
    { MESA_FORMAT_YCBCR, _mesa_texstore_ycbcr },
    { MESA_FORMAT_YCBCR_REV, _mesa_texstore_ycbcr },