Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 190 insertions, 0 deletions

diff --git a/nx-X11/extras/Mesa/src/glx/x11/compsize.c b/nx-X11/extras/Mesa/src/glx/x11/compsize.c
new file mode 100644
index 000000000..193570c84
--- /dev/null
+++ b/nx-X11/extras/Mesa/src/glx/x11/compsize.c
@@ -0,0 +1,190 @@
+/* $XFree86: xc/lib/GL/glx/compsize.c,v 1.6 2004/01/28 18:11:38 alanh Exp $ */
+/*
+** License Applicability. Except to the extent portions of this file are
+** made subject to an alternative license as permitted in the SGI Free
+** Software License B, Version 1.1 (the "License"), the contents of this
+** file are subject only to the provisions of the License. You may not use
+** this file except in compliance with the License. You may obtain a copy
+** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
+** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
+** 
+** http://oss.sgi.com/projects/FreeB
+** 
+** Note that, as provided in the License, the Software is distributed on an
+** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
+** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
+** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
+** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+** 
+** Original Code. The Original Code is: OpenGL Sample Implementation,
+** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
+** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
+** Copyright in any portions created by third parties is as indicated
+** elsewhere herein. All Rights Reserved.
+** 
+** Additional Notice Provisions: The application programming interfaces
+** established by SGI in conjunction with the Original Code are The
+** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
+** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
+** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
+** Window System(R) (Version 1.3), released October 19, 1998. This software
+** was created using the OpenGL(R) version 1.2.1 Sample Implementation
+** published by SGI, but has not been independently verified as being
+** compliant with the OpenGL(R) version 1.2.1 Specification.
+**
+*/
+
+#include <GL/gl.h>
+#include "indirect_size.h"
+
+/*
+** Return the number of elements per group of a specified format
+*/
+GLint __glElementsPerGroup(GLenum format, GLenum type) 
+{
+    /*
+    ** To make row length computation valid for image extraction,
+    ** packed pixel types assume elements per group equals one.
+    */
+    switch(type) {
+    case GL_UNSIGNED_BYTE_3_3_2:
+    case GL_UNSIGNED_BYTE_2_3_3_REV:
+    case GL_UNSIGNED_SHORT_5_6_5:
+    case GL_UNSIGNED_SHORT_5_6_5_REV:
+    case GL_UNSIGNED_SHORT_4_4_4_4:
+    case GL_UNSIGNED_SHORT_4_4_4_4_REV:
+    case GL_UNSIGNED_SHORT_5_5_5_1:
+    case GL_UNSIGNED_SHORT_1_5_5_5_REV:
+    case GL_UNSIGNED_SHORT_8_8_APPLE:
+    case GL_UNSIGNED_SHORT_8_8_REV_APPLE:
+    case GL_UNSIGNED_SHORT_15_1_MESA:
+    case GL_UNSIGNED_SHORT_1_15_REV_MESA:
+    case GL_UNSIGNED_INT_8_8_8_8:
+    case GL_UNSIGNED_INT_8_8_8_8_REV:
+    case GL_UNSIGNED_INT_10_10_10_2:
+    case GL_UNSIGNED_INT_2_10_10_10_REV:
+    case GL_UNSIGNED_INT_24_8_NV:
+    case GL_UNSIGNED_INT_24_8_MESA:
+    case GL_UNSIGNED_INT_8_24_REV_MESA:
+      return 1;
+    default:
+      break;
+    }
+
+    switch(format) {
+      case GL_RGB:
+      case GL_BGR:
+	return 3;
+      case GL_422_EXT:
+      case GL_422_REV_EXT:
+      case GL_422_AVERAGE_EXT:
+      case GL_422_REV_AVERAGE_EXT:
+      case GL_YCBCR_422_APPLE:
+      case GL_LUMINANCE_ALPHA:
+	return 2;
+      case GL_RGBA:
+      case GL_BGRA:
+      case GL_ABGR_EXT:
+	return 4;
+      case GL_COLOR_INDEX:
+      case GL_STENCIL_INDEX:
+      case GL_DEPTH_COMPONENT:
+      case GL_RED:
+      case GL_GREEN:
+      case GL_BLUE:
+      case GL_ALPHA:
+      case GL_LUMINANCE:
+      case GL_INTENSITY:
+	return 1;
+      default:
+	return 0;
+    }
+}
+
+/*
+** Return the number of bytes per element, based on the element type (other
+** than GL_BITMAP).
+*/
+GLint __glBytesPerElement(GLenum type) 
+{
+    switch(type) {
+      case GL_UNSIGNED_SHORT:
+      case GL_SHORT:
+      case GL_UNSIGNED_SHORT_5_6_5:
+      case GL_UNSIGNED_SHORT_5_6_5_REV:
+      case GL_UNSIGNED_SHORT_4_4_4_4:
+      case GL_UNSIGNED_SHORT_4_4_4_4_REV:
+      case GL_UNSIGNED_SHORT_5_5_5_1:
+      case GL_UNSIGNED_SHORT_1_5_5_5_REV:
+      case GL_UNSIGNED_SHORT_8_8_APPLE:
+      case GL_UNSIGNED_SHORT_8_8_REV_APPLE:
+      case GL_UNSIGNED_SHORT_15_1_MESA:
+      case GL_UNSIGNED_SHORT_1_15_REV_MESA:
+	return 2;
+      case GL_UNSIGNED_BYTE:
+      case GL_BYTE:
+      case GL_UNSIGNED_BYTE_3_3_2:
+      case GL_UNSIGNED_BYTE_2_3_3_REV:
+	return 1;
+      case GL_INT:
+      case GL_UNSIGNED_INT:
+      case GL_FLOAT:
+      case GL_UNSIGNED_INT_8_8_8_8:
+      case GL_UNSIGNED_INT_8_8_8_8_REV:
+      case GL_UNSIGNED_INT_10_10_10_2:
+      case GL_UNSIGNED_INT_2_10_10_10_REV:
+      case GL_UNSIGNED_INT_24_8_NV:
+      case GL_UNSIGNED_INT_24_8_MESA:
+      case GL_UNSIGNED_INT_8_24_REV_MESA:
+	return 4;
+      default:
+	return 0;
+    }
+}
+
+/*
+** Compute memory required for internal packed array of data of given type
+** and format.
+*/
+GLint __glImageSize(GLsizei width, GLsizei height, GLsizei depth,
+		    GLenum format, GLenum type, GLenum target)
+{
+    int bytes_per_row;
+    int components;
+
+    switch( target ) {
+    case GL_PROXY_TEXTURE_1D:
+    case GL_PROXY_TEXTURE_2D:
+    case GL_PROXY_TEXTURE_3D:
+    case GL_PROXY_TEXTURE_4D_SGIS:
+    case GL_PROXY_TEXTURE_CUBE_MAP:
+    case GL_PROXY_TEXTURE_RECTANGLE_ARB:
+    case GL_PROXY_HISTOGRAM:
+    case GL_PROXY_COLOR_TABLE:
+    case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
+    case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
+    case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
+    case GL_PROXY_POST_IMAGE_TRANSFORM_COLOR_TABLE_HP:
+	return 0;
+    }
+
+    if (width < 0 || height < 0 || depth < 0) {
+	return 0;
+    }
+
+    /*
+    ** Zero is returned if either format or type are invalid.
+    */
+    components = __glElementsPerGroup(format,type);
+    if (type == GL_BITMAP) {
+	if (format == GL_COLOR_INDEX || format == GL_STENCIL_INDEX) {
+	    bytes_per_row = (width + 7) >> 3;
+	} else {
+	    return 0;
+	}
+    } else {
+	bytes_per_row = __glBytesPerElement(type) * width;
+    }
+
+    return bytes_per_row * height * depth * components;
+}