mesa xserver git update 28 jan 2012

1 files changed, 146 insertions, 50 deletions

diff --git a/mesalib/src/mesa/main/formats.c b/mesalib/src/mesa/main/formats.c
index 96317dbf4..cecb70c01 100644
--- a/mesalib/src/mesa/main/formats.c
+++ b/mesalib/src/mesa/main/formats.c
@@ -2516,14 +2516,16 @@ _mesa_format_to_type_and_comps(gl_format format,
 /**
  * Check if a gl_format exactly matches a GL formaat/type combination
  * such that we can use memcpy() from one to the other.
- *
- * Note: this matching assumes that GL_PACK/UNPACK_SWAP_BYTES is unset.
- *
+ * \param gl_format  a MESA_FORMAT_x value
+ * \param format  the user-specified image format
+ * \param type  the user-specified image datatype
+ * \param swapBytes  typically the current pixel pack/unpack byteswap state
  * \return GL_TRUE if the formats match, GL_FALSE otherwise.
  */
 GLboolean
 _mesa_format_matches_format_and_type(gl_format gl_format,
-				     GLenum format, GLenum type)
+				     GLenum format, GLenum type,
+                                     GLboolean swapBytes)
 {
    const GLboolean littleEndian = _mesa_little_endian();
 
@@ -2543,21 +2545,77 @@ _mesa_format_matches_format_and_type(gl_format gl_format,
       return GL_FALSE;
 
    case MESA_FORMAT_RGBA8888:
-      return ((format == GL_RGBA && (type == GL_UNSIGNED_INT_8_8_8_8 ||
-				     (type == GL_UNSIGNED_BYTE && !littleEndian))) ||
-	      (format == GL_ABGR_EXT && (type == GL_UNSIGNED_INT_8_8_8_8_REV ||
-					 (type == GL_UNSIGNED_BYTE && littleEndian))));
+      if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8 && !swapBytes)
+         return GL_TRUE;
+
+      if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8_REV && swapBytes)
+         return GL_TRUE;
+
+      if (format == GL_RGBA && type == GL_UNSIGNED_BYTE && !littleEndian)
+         return GL_TRUE;
+
+      if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8_REV
+          && !swapBytes)
+         return GL_TRUE;
+
+      if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8
+          && swapBytes)
+         return GL_TRUE;
+
+      if (format == GL_ABGR_EXT && type == GL_UNSIGNED_BYTE && littleEndian)
+         return GL_TRUE;
+
+      return GL_FALSE;
 
    case MESA_FORMAT_RGBA8888_REV:
-      return ((format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8_REV));
+      if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
+          !swapBytes)
+         return GL_TRUE;
+
+      if (format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8 && swapBytes)
+         return GL_TRUE;
+
+      if (format == GL_RGBA && type == GL_UNSIGNED_BYTE && littleEndian)
+         return GL_TRUE;
+
+      if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8 &&
+          !swapBytes)
+         return GL_TRUE;
+
+      if (format == GL_ABGR_EXT && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
+          swapBytes)
+         return GL_TRUE;
+
+      if (format == GL_ABGR_EXT && type == GL_UNSIGNED_BYTE && !littleEndian)
+         return GL_TRUE;
+
+      return GL_FALSE;
 
    case MESA_FORMAT_ARGB8888:
-      return ((format == GL_BGRA && (type == GL_UNSIGNED_INT_8_8_8_8_REV ||
-				     (type == GL_UNSIGNED_BYTE && littleEndian))));
+      if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
+          !swapBytes)
+         return GL_TRUE;
+
+      if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8 && swapBytes)
+         return GL_TRUE;
+
+      if (format == GL_BGRA && type == GL_UNSIGNED_BYTE && littleEndian)
+         return GL_TRUE;
+
+      return GL_FALSE;
 
    case MESA_FORMAT_ARGB8888_REV:
-      return ((format == GL_BGRA && (type == GL_UNSIGNED_INT_8_8_8_8 ||
-				     (type == GL_UNSIGNED_BYTE && !littleEndian))));
+      if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8 && !swapBytes)
+         return GL_TRUE;
+
+      if (format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV &&
+          swapBytes)
+         return GL_TRUE;
+
+      if (format == GL_BGRA && type == GL_UNSIGNED_BYTE && !littleEndian)
+         return GL_TRUE;
+
+      return GL_FALSE;
 
    case MESA_FORMAT_RGBX8888:
    case MESA_FORMAT_RGBX8888_REV:
@@ -2568,13 +2626,14 @@ _mesa_format_matches_format_and_type(gl_format gl_format,
       return GL_FALSE;
 
    case MESA_FORMAT_RGB888:
-      return format == GL_RGB && type == GL_UNSIGNED_BYTE && littleEndian;
+      return format == GL_BGR && type == GL_UNSIGNED_BYTE && littleEndian;
 
    case MESA_FORMAT_BGR888:
-      return GL_FALSE;
+      return format == GL_RGB && type == GL_UNSIGNED_BYTE && littleEndian;
 
    case MESA_FORMAT_RGB565:
-      return format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5;
+      return format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5 && !swapBytes;
+
    case MESA_FORMAT_RGB565_REV:
       /* Some of the 16-bit MESA_FORMATs that would seem to correspond to
        * GL_UNSIGNED_SHORT_* are byte-swapped instead of channel-reversed,
@@ -2583,15 +2642,20 @@ _mesa_format_matches_format_and_type(gl_format gl_format,
       return GL_FALSE;
 
    case MESA_FORMAT_ARGB4444:
-      return format == GL_BGRA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV;
+      return format == GL_BGRA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV &&
+         !swapBytes;
+
    case MESA_FORMAT_ARGB4444_REV:
       return GL_FALSE;
 
    case MESA_FORMAT_RGBA5551:
-      return format == GL_RGBA && type == GL_UNSIGNED_SHORT_5_5_5_1;
+      return format == GL_RGBA && type == GL_UNSIGNED_SHORT_5_5_5_1 &&
+         !swapBytes;
 
    case MESA_FORMAT_ARGB1555:
-      return format == GL_BGRA && type == GL_UNSIGNED_SHORT_1_5_5_5_REV;
+      return format == GL_BGRA && type == GL_UNSIGNED_SHORT_1_5_5_5_REV &&
+         !swapBytes;
+
    case MESA_FORMAT_ARGB1555_REV:
       return GL_FALSE;
 
@@ -2603,7 +2667,7 @@ _mesa_format_matches_format_and_type(gl_format gl_format,
       return GL_FALSE;
 
    case MESA_FORMAT_AL1616:
-      return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_SHORT && littleEndian;
+      return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_SHORT && littleEndian && !swapBytes;
    case MESA_FORMAT_AL1616_REV:
       return GL_FALSE;
 
@@ -2613,15 +2677,18 @@ _mesa_format_matches_format_and_type(gl_format gl_format,
    case MESA_FORMAT_A8:
       return format == GL_ALPHA && type == GL_UNSIGNED_BYTE;
    case MESA_FORMAT_A16:
-      return format == GL_ALPHA && type == GL_UNSIGNED_SHORT && littleEndian;
+      return format == GL_ALPHA && type == GL_UNSIGNED_SHORT &&
+         littleEndian && !swapBytes;
    case MESA_FORMAT_L8:
       return format == GL_LUMINANCE && type == GL_UNSIGNED_BYTE;
    case MESA_FORMAT_L16:
-      return format == GL_LUMINANCE && type == GL_UNSIGNED_SHORT && littleEndian;
+      return format == GL_LUMINANCE && type == GL_UNSIGNED_SHORT &&
+         littleEndian && !swapBytes;
    case MESA_FORMAT_I8:
       return format == GL_INTENSITY && type == GL_UNSIGNED_BYTE;
    case MESA_FORMAT_I16:
-      return format == GL_INTENSITY && type == GL_UNSIGNED_SHORT && littleEndian;
+      return format == GL_INTENSITY && type == GL_UNSIGNED_SHORT &&
+         littleEndian && !swapBytes;
 
    case MESA_FORMAT_YCBCR:
    case MESA_FORMAT_YCBCR_REV:
@@ -2635,32 +2702,38 @@ _mesa_format_matches_format_and_type(gl_format gl_format,
       return GL_FALSE;
 
    case MESA_FORMAT_R16:
-      return format == GL_RED && type == GL_UNSIGNED_SHORT && littleEndian;
+      return format == GL_RED && type == GL_UNSIGNED_SHORT && littleEndian &&
+         !swapBytes;
    case MESA_FORMAT_RG1616:
-      return format == GL_RG && type == GL_UNSIGNED_SHORT && littleEndian;
+      return format == GL_RG && type == GL_UNSIGNED_SHORT && littleEndian &&
+         !swapBytes;
    case MESA_FORMAT_RG1616_REV:
       return GL_FALSE;
 
    case MESA_FORMAT_ARGB2101010:
-      return format == GL_BGRA && type == GL_UNSIGNED_INT_2_10_10_10_REV;
+      return format == GL_BGRA && type == GL_UNSIGNED_INT_2_10_10_10_REV &&
+         !swapBytes;
 
    case MESA_FORMAT_Z24_S8:
-      return format == GL_DEPTH_STENCIL && type == GL_UNSIGNED_INT_24_8;
+      return format == GL_DEPTH_STENCIL && type == GL_UNSIGNED_INT_24_8 &&
+         !swapBytes;
    case MESA_FORMAT_Z24_X8:
    case MESA_FORMAT_S8_Z24:
       return GL_FALSE;
 
    case MESA_FORMAT_Z16:
-      return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_SHORT;
+      return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_SHORT &&
+         !swapBytes;
 
    case MESA_FORMAT_X8_Z24:
       return GL_FALSE;
 
    case MESA_FORMAT_Z32:
-      return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_INT;
+      return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_INT &&
+         !swapBytes;
 
    case MESA_FORMAT_S8:
-      return GL_FALSE;
+      return format == GL_STENCIL_INDEX && type == GL_UNSIGNED_BYTE;
 
    case MESA_FORMAT_SRGB8:
    case MESA_FORMAT_SRGBA8:
@@ -2682,44 +2755,44 @@ _mesa_format_matches_format_and_type(gl_format gl_format,
       return GL_FALSE;
 
    case MESA_FORMAT_RGBA_FLOAT32:
-      return format == GL_RGBA && type == GL_FLOAT;
+      return format == GL_RGBA && type == GL_FLOAT && !swapBytes;
    case MESA_FORMAT_RGBA_FLOAT16:
-      return format == GL_RGBA && type == GL_HALF_FLOAT;
+      return format == GL_RGBA && type == GL_HALF_FLOAT && !swapBytes;
 
    case MESA_FORMAT_RGB_FLOAT32:
-      return format == GL_RGB && type == GL_FLOAT;
+      return format == GL_RGB && type == GL_FLOAT && !swapBytes;
    case MESA_FORMAT_RGB_FLOAT16:
-      return format == GL_RGB && type == GL_HALF_FLOAT;
+      return format == GL_RGB && type == GL_HALF_FLOAT && !swapBytes;
 
    case MESA_FORMAT_ALPHA_FLOAT32:
-      return format == GL_ALPHA && type == GL_FLOAT;
+      return format == GL_ALPHA && type == GL_FLOAT && !swapBytes;
    case MESA_FORMAT_ALPHA_FLOAT16:
-      return format == GL_ALPHA && type == GL_HALF_FLOAT;
+      return format == GL_ALPHA && type == GL_HALF_FLOAT && !swapBytes;
 
    case MESA_FORMAT_LUMINANCE_FLOAT32:
-      return format == GL_LUMINANCE && type == GL_FLOAT;
+      return format == GL_LUMINANCE && type == GL_FLOAT && !swapBytes;
    case MESA_FORMAT_LUMINANCE_FLOAT16:
-      return format == GL_LUMINANCE && type == GL_HALF_FLOAT;
+      return format == GL_LUMINANCE && type == GL_HALF_FLOAT && !swapBytes;
 
    case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
-      return format == GL_LUMINANCE_ALPHA && type == GL_FLOAT;
+      return format == GL_LUMINANCE_ALPHA && type == GL_FLOAT && !swapBytes;
    case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
-      return format == GL_LUMINANCE_ALPHA && type == GL_HALF_FLOAT;
+      return format == GL_LUMINANCE_ALPHA && type == GL_HALF_FLOAT && !swapBytes;
 
    case MESA_FORMAT_INTENSITY_FLOAT32:
-      return format == GL_INTENSITY && type == GL_FLOAT;
+      return format == GL_INTENSITY && type == GL_FLOAT && !swapBytes;
    case MESA_FORMAT_INTENSITY_FLOAT16:
-      return format == GL_INTENSITY && type == GL_HALF_FLOAT;
+      return format == GL_INTENSITY && type == GL_HALF_FLOAT && !swapBytes;
 
    case MESA_FORMAT_R_FLOAT32:
-      return format == GL_RED && type == GL_FLOAT;
+      return format == GL_RED && type == GL_FLOAT && !swapBytes;
    case MESA_FORMAT_R_FLOAT16:
-      return format == GL_RED && type == GL_HALF_FLOAT;
+      return format == GL_RED && type == GL_HALF_FLOAT && !swapBytes;
 
    case MESA_FORMAT_RG_FLOAT32:
-      return format == GL_RG && type == GL_FLOAT;
+      return format == GL_RG && type == GL_FLOAT && !swapBytes;
    case MESA_FORMAT_RG_FLOAT16:
-      return format == GL_RG && type == GL_HALF_FLOAT;
+      return format == GL_RG && type == GL_HALF_FLOAT && !swapBytes;
 
       /* FINISHME: What do we want to do for GL_EXT_texture_integer? */
    case MESA_FORMAT_ALPHA_UINT8:
@@ -2786,8 +2859,26 @@ _mesa_format_matches_format_and_type(gl_format gl_format,
    case MESA_FORMAT_SIGNED_R8:
    case MESA_FORMAT_SIGNED_RG88_REV:
    case MESA_FORMAT_SIGNED_RGBX8888:
+      return GL_FALSE;
+
    case MESA_FORMAT_SIGNED_RGBA8888:
+      if (format == GL_RGBA && type == GL_BYTE && !littleEndian)
+         return GL_TRUE;
+
+      if (format == GL_ABGR_EXT && type == GL_BYTE && littleEndian)
+         return GL_TRUE;
+
+      return GL_FALSE;
+
    case MESA_FORMAT_SIGNED_RGBA8888_REV:
+      if (format == GL_RGBA && type == GL_BYTE && littleEndian)
+         return GL_TRUE;
+
+      if (format == GL_ABGR_EXT && type == GL_BYTE && !littleEndian)
+         return GL_TRUE;
+
+      return GL_FALSE;
+
    case MESA_FORMAT_SIGNED_R16:
    case MESA_FORMAT_SIGNED_GR1616:
    case MESA_FORMAT_SIGNED_RGB_16:
@@ -2823,15 +2914,20 @@ _mesa_format_matches_format_and_type(gl_format gl_format,
       return GL_FALSE;
 
    case MESA_FORMAT_ARGB2101010_UINT:
-      return GL_FALSE;
+      return (format == GL_BGRA_INTEGER_EXT &&
+              type == GL_UNSIGNED_INT_2_10_10_10_REV &&
+              !swapBytes);
 
    case MESA_FORMAT_RGB9_E5_FLOAT:
-      return format == GL_RGB && type == GL_UNSIGNED_INT_5_9_9_9_REV;
+      return format == GL_RGB && type == GL_UNSIGNED_INT_5_9_9_9_REV &&
+         !swapBytes;
+
    case MESA_FORMAT_R11_G11_B10_FLOAT:
-      return format == GL_RGB && type == GL_UNSIGNED_INT_10F_11F_11F_REV;
+      return format == GL_RGB && type == GL_UNSIGNED_INT_10F_11F_11F_REV &&
+         !swapBytes;
 
    case MESA_FORMAT_Z32_FLOAT:
-      return format == GL_DEPTH_COMPONENT && type == GL_FLOAT;
+      return format == GL_DEPTH_COMPONENT && type == GL_FLOAT && !swapBytes;
 
    case MESA_FORMAT_Z32_FLOAT_X24S8:
       return GL_FALSE;