move _mesa_format_to_type_and_comps() to texformat.c

(cherry picked from commit 42eac65da45fb58bffdf94ab8f9860d8cee5b256)

3 files changed, 178 insertions, 167 deletions

diff --git a/src/mesa/main/mipmap.c b/src/mesa/main/mipmap.c
index 09709d1787..b3e40c2da9 100644
--- a/src/mesa/main/mipmap.c
+++ b/src/mesa/main/mipmap.c
@@ -45,172 +45,6 @@ bytes_per_pixel(GLenum datatype, GLuint comps)
 }
 
 
-static void
-mesa_format_to_type_and_comps(const struct gl_texture_format *format,
-                              GLenum *datatype, GLuint *comps)
-{
-   switch (format->MesaFormat) {
-   case MESA_FORMAT_RGBA8888:
-   case MESA_FORMAT_RGBA8888_REV:
-   case MESA_FORMAT_ARGB8888:
-   case MESA_FORMAT_ARGB8888_REV:
-      *datatype = CHAN_TYPE;
-      *comps = 4;
-      return;
-   case MESA_FORMAT_RGB888:
-   case MESA_FORMAT_BGR888:
-      *datatype = GL_UNSIGNED_BYTE;
-      *comps = 3;
-      return;
-   case MESA_FORMAT_RGB565:
-   case MESA_FORMAT_RGB565_REV:
-      *datatype = GL_UNSIGNED_SHORT_5_6_5;
-      *comps = 3;
-      return;
-
-   case MESA_FORMAT_ARGB4444:
-   case MESA_FORMAT_ARGB4444_REV:
-      *datatype = GL_UNSIGNED_SHORT_4_4_4_4;
-      *comps = 4;
-      return;
-
-   case MESA_FORMAT_ARGB1555:
-   case MESA_FORMAT_ARGB1555_REV:
-      *datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV;
-      *comps = 3;
-      return;
-
-   case MESA_FORMAT_AL88:
-   case MESA_FORMAT_AL88_REV:
-      *datatype = GL_UNSIGNED_BYTE;
-      *comps = 2;
-      return;
-   case MESA_FORMAT_RGB332:
-      *datatype = GL_UNSIGNED_BYTE_3_3_2;
-      *comps = 3;
-      return;
-
-   case MESA_FORMAT_A8:
-   case MESA_FORMAT_L8:
-   case MESA_FORMAT_I8:
-   case MESA_FORMAT_CI8:
-      *datatype = GL_UNSIGNED_BYTE;
-      *comps = 1;
-      return;
-
-   case MESA_FORMAT_YCBCR:
-   case MESA_FORMAT_YCBCR_REV:
-      *datatype = GL_UNSIGNED_SHORT;
-      *comps = 2;
-      return;
-
-   case MESA_FORMAT_Z24_S8:
-      *datatype = GL_UNSIGNED_INT;
-      *comps = 1; /* XXX OK? */
-      return;
-
-   case MESA_FORMAT_Z16:
-      *datatype = GL_UNSIGNED_SHORT;
-      *comps = 1;
-      return;
-
-   case MESA_FORMAT_Z32:
-      *datatype = GL_UNSIGNED_INT;
-      *comps = 1;
-      return;
-
-   case MESA_FORMAT_SRGB8:
-      *datatype = GL_UNSIGNED_BYTE;
-      *comps = 3;
-      return;
-   case MESA_FORMAT_SRGBA8:
-      *datatype = GL_UNSIGNED_BYTE;
-      *comps = 4;
-      return;
-   case MESA_FORMAT_SL8:
-      *datatype = GL_UNSIGNED_BYTE;
-      *comps = 1;
-      return;
-   case MESA_FORMAT_SLA8:
-      *datatype = GL_UNSIGNED_BYTE;
-      *comps = 2;
-      return;
-
-   case MESA_FORMAT_RGB_FXT1:
-   case MESA_FORMAT_RGBA_FXT1:
-   case MESA_FORMAT_RGB_DXT1:
-   case MESA_FORMAT_RGBA_DXT1:
-   case MESA_FORMAT_RGBA_DXT3:
-   case MESA_FORMAT_RGBA_DXT5:
-      /* XXX generate error instead? */
-      *datatype = GL_UNSIGNED_BYTE;
-      *comps = 0;
-      return;
-
-   case MESA_FORMAT_RGBA:
-      *datatype = CHAN_TYPE;
-      *comps = 4;
-      return;
-   case MESA_FORMAT_RGB:
-      *datatype = CHAN_TYPE;
-      *comps = 3;
-      return;
-   case MESA_FORMAT_LUMINANCE_ALPHA:
-      *datatype = CHAN_TYPE;
-      *comps = 2;
-      return;
-   case MESA_FORMAT_ALPHA:
-   case MESA_FORMAT_LUMINANCE:
-   case MESA_FORMAT_INTENSITY:
-      *datatype = CHAN_TYPE;
-      *comps = 1;
-      return;
-
-   case MESA_FORMAT_RGBA_FLOAT32:
-      *datatype = GL_FLOAT;
-      *comps = 4;
-      return;
-   case MESA_FORMAT_RGBA_FLOAT16:
-      *datatype = GL_HALF_FLOAT_ARB;
-      *comps = 4;
-      return;
-   case MESA_FORMAT_RGB_FLOAT32:
-      *datatype = GL_FLOAT;
-      *comps = 3;
-      return;
-   case MESA_FORMAT_RGB_FLOAT16:
-      *datatype = GL_HALF_FLOAT_ARB;
-      *comps = 3;
-      return;
-   case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
-      *datatype = GL_FLOAT;
-      *comps = 2;
-      return;
-   case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
-      *datatype = GL_HALF_FLOAT_ARB;
-      *comps = 2;
-      return;
-   case MESA_FORMAT_ALPHA_FLOAT32:
-   case MESA_FORMAT_LUMINANCE_FLOAT32:
-   case MESA_FORMAT_INTENSITY_FLOAT32:
-      *datatype = GL_FLOAT;
-      *comps = 1;
-      return;
-   case MESA_FORMAT_ALPHA_FLOAT16:
-   case MESA_FORMAT_LUMINANCE_FLOAT16:
-   case MESA_FORMAT_INTENSITY_FLOAT16:
-      *datatype = GL_HALF_FLOAT_ARB;
-      *comps = 1;
-      return;
-
-   default:
-      _mesa_problem(NULL, "bad texture format in mesa_format_to_type_and_comps");
-      *datatype = 0;
-      *comps = 1;
-   }
-}
-
-
 /**
  * Average together two rows of a source image to produce a single new
  * row in the dest image.  It's legal for the two source rows to point
@@ -1087,7 +921,7 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
       convertFormat = srcImage->TexFormat;
    }
 
-   mesa_format_to_type_and_comps(convertFormat, &datatype, &comps);
+   _mesa_format_to_type_and_comps(convertFormat, &datatype, &comps);
 
    for (level = texObj->BaseLevel; level < texObj->MaxLevel
            && level < maxLevels - 1; level++) {
diff --git a/src/mesa/main/texformat.c b/src/mesa/main/texformat.c
index 62acdba1bb..ae9ed0a84b 100644
--- a/src/mesa/main/texformat.c
+++ b/src/mesa/main/texformat.c
@@ -1603,3 +1603,174 @@ _mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
    _mesa_problem(ctx, "unexpected format in _mesa_choose_tex_format()");
    return NULL;
 }
+
+
+
+/**
+ * Return datatype and number of components per texel for the
+ * given gl_texture_format.
+ */
+void
+_mesa_format_to_type_and_comps(const struct gl_texture_format *format,
+                               GLenum *datatype, GLuint *comps)
+{
+   switch (format->MesaFormat) {
+   case MESA_FORMAT_RGBA8888:
+   case MESA_FORMAT_RGBA8888_REV:
+   case MESA_FORMAT_ARGB8888:
+   case MESA_FORMAT_ARGB8888_REV:
+      *datatype = CHAN_TYPE;
+      *comps = 4;
+      return;
+   case MESA_FORMAT_RGB888:
+   case MESA_FORMAT_BGR888:
+      *datatype = GL_UNSIGNED_BYTE;
+      *comps = 3;
+      return;
+   case MESA_FORMAT_RGB565:
+   case MESA_FORMAT_RGB565_REV:
+      *datatype = GL_UNSIGNED_SHORT_5_6_5;
+      *comps = 3;
+      return;
+
+   case MESA_FORMAT_ARGB4444:
+   case MESA_FORMAT_ARGB4444_REV:
+      *datatype = GL_UNSIGNED_SHORT_4_4_4_4;
+      *comps = 4;
+      return;
+
+   case MESA_FORMAT_ARGB1555:
+   case MESA_FORMAT_ARGB1555_REV:
+      *datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV;
+      *comps = 3;
+      return;
+
+   case MESA_FORMAT_AL88:
+   case MESA_FORMAT_AL88_REV:
+      *datatype = GL_UNSIGNED_BYTE;
+      *comps = 2;
+      return;
+   case MESA_FORMAT_RGB332:
+      *datatype = GL_UNSIGNED_BYTE_3_3_2;
+      *comps = 3;
+      return;
+
+   case MESA_FORMAT_A8:
+   case MESA_FORMAT_L8:
+   case MESA_FORMAT_I8:
+   case MESA_FORMAT_CI8:
+      *datatype = GL_UNSIGNED_BYTE;
+      *comps = 1;
+      return;
+
+   case MESA_FORMAT_YCBCR:
+   case MESA_FORMAT_YCBCR_REV:
+      *datatype = GL_UNSIGNED_SHORT;
+      *comps = 2;
+      return;
+
+   case MESA_FORMAT_Z24_S8:
+      *datatype = GL_UNSIGNED_INT;
+      *comps = 1; /* XXX OK? */
+      return;
+
+   case MESA_FORMAT_Z16:
+      *datatype = GL_UNSIGNED_SHORT;
+      *comps = 1;
+      return;
+
+   case MESA_FORMAT_Z32:
+      *datatype = GL_UNSIGNED_INT;
+      *comps = 1;
+      return;
+
+   case MESA_FORMAT_SRGB8:
+      *datatype = GL_UNSIGNED_BYTE;
+      *comps = 3;
+      return;
+   case MESA_FORMAT_SRGBA8:
+      *datatype = GL_UNSIGNED_BYTE;
+      *comps = 4;
+      return;
+   case MESA_FORMAT_SL8:
+      *datatype = GL_UNSIGNED_BYTE;
+      *comps = 1;
+      return;
+   case MESA_FORMAT_SLA8:
+      *datatype = GL_UNSIGNED_BYTE;
+      *comps = 2;
+      return;
+
+   case MESA_FORMAT_RGB_FXT1:
+   case MESA_FORMAT_RGBA_FXT1:
+   case MESA_FORMAT_RGB_DXT1:
+   case MESA_FORMAT_RGBA_DXT1:
+   case MESA_FORMAT_RGBA_DXT3:
+   case MESA_FORMAT_RGBA_DXT5:
+      /* XXX generate error instead? */
+      *datatype = GL_UNSIGNED_BYTE;
+      *comps = 0;
+      return;
+
+   case MESA_FORMAT_RGBA:
+      *datatype = CHAN_TYPE;
+      *comps = 4;
+      return;
+   case MESA_FORMAT_RGB:
+      *datatype = CHAN_TYPE;
+      *comps = 3;
+      return;
+   case MESA_FORMAT_LUMINANCE_ALPHA:
+      *datatype = CHAN_TYPE;
+      *comps = 2;
+      return;
+   case MESA_FORMAT_ALPHA:
+   case MESA_FORMAT_LUMINANCE:
+   case MESA_FORMAT_INTENSITY:
+      *datatype = CHAN_TYPE;
+      *comps = 1;
+      return;
+
+   case MESA_FORMAT_RGBA_FLOAT32:
+      *datatype = GL_FLOAT;
+      *comps = 4;
+      return;
+   case MESA_FORMAT_RGBA_FLOAT16:
+      *datatype = GL_HALF_FLOAT_ARB;
+      *comps = 4;
+      return;
+   case MESA_FORMAT_RGB_FLOAT32:
+      *datatype = GL_FLOAT;
+      *comps = 3;
+      return;
+   case MESA_FORMAT_RGB_FLOAT16:
+      *datatype = GL_HALF_FLOAT_ARB;
+      *comps = 3;
+      return;
+   case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
+      *datatype = GL_FLOAT;
+      *comps = 2;
+      return;
+   case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
+      *datatype = GL_HALF_FLOAT_ARB;
+      *comps = 2;
+      return;
+   case MESA_FORMAT_ALPHA_FLOAT32:
+   case MESA_FORMAT_LUMINANCE_FLOAT32:
+   case MESA_FORMAT_INTENSITY_FLOAT32:
+      *datatype = GL_FLOAT;
+      *comps = 1;
+      return;
+   case MESA_FORMAT_ALPHA_FLOAT16:
+   case MESA_FORMAT_LUMINANCE_FLOAT16:
+   case MESA_FORMAT_INTENSITY_FLOAT16:
+      *datatype = GL_HALF_FLOAT_ARB;
+      *comps = 1;
+      return;
+
+   default:
+      _mesa_problem(NULL, "bad format in _mesa_format_to_type_and_comps");
+      *datatype = 0;
+      *comps = 1;
+   }
+}
diff --git a/src/mesa/main/texformat.h b/src/mesa/main/texformat.h
index f5f851ca21..18900fe08b 100644
--- a/src/mesa/main/texformat.h
+++ b/src/mesa/main/texformat.h
@@ -243,4 +243,10 @@ extern const struct gl_texture_format *
 _mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
                          GLenum format, GLenum type );
 
+
+extern void
+_mesa_format_to_type_and_comps(const struct gl_texture_format *format,
+                               GLenum *datatype, GLuint *comps);
+
+
 #endif