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src/glx/indirect_texture_compression.c

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+/*
+ * (C) Copyright IBM Corporation 2004
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file glx_texture_compression.c
+ * Contains the routines required to implement GLX protocol for
+ * ARB_texture_compression and related extensions.
+ *
+ * \sa http://oss.sgi.com/projects/ogl-sample/registry/ARB/texture_compression.txt
+ *
+ * \author Ian Romanick <[email protected]>
+ */
+
+#include "packrender.h"
+#include "packsingle.h"
+#include "indirect.h"
+
+#include <assert.h>
+
+
+void
+__indirect_glGetCompressedTexImage(GLenum target, GLint level,
+                                      GLvoid * img)
+{
+   __GLX_SINGLE_DECLARE_VARIABLES();
+   xGLXGetTexImageReply reply;
+   size_t image_bytes;
+
+   __GLX_SINGLE_LOAD_VARIABLES();
+   __GLX_SINGLE_BEGIN(X_GLsop_GetCompressedTexImage, 8);
+   __GLX_SINGLE_PUT_LONG(0, target);
+   __GLX_SINGLE_PUT_LONG(4, level);
+   __GLX_SINGLE_READ_XREPLY();
+
+   image_bytes = reply.width;
+   assert(image_bytes <= ((4 * reply.length) - 0));
+   assert(image_bytes >= ((4 * reply.length) - 3));
+
+   if (image_bytes != 0) {
+      _XRead(dpy, (char *) img, image_bytes);
+      if (image_bytes < (4 * reply.length)) {
+         _XEatData(dpy, (4 * reply.length) - image_bytes);
+      }
+   }
+
+   __GLX_SINGLE_END();
+}
+
+
+/**
+ * Internal function used for \c glCompressedTexImage1D and
+ * \c glCompressedTexImage2D.
+ */
+static void
+CompressedTexImage1D2D(GLenum target, GLint level,
+                       GLenum internal_format,
+                       GLsizei width, GLsizei height,
+                       GLint border, GLsizei image_size,
+                       const GLvoid * data, CARD32 rop)
+{
+   __GLX_DECLARE_VARIABLES();
+
+   __GLX_LOAD_VARIABLES();
+   if (gc->currentDpy == NULL) {
+      return;
+   }
+
+   if ((target == GL_PROXY_TEXTURE_1D)
+       || (target == GL_PROXY_TEXTURE_2D)
+       || (target == GL_PROXY_TEXTURE_CUBE_MAP)) {
+      compsize = 0;
+   }
+   else {
+      compsize = image_size;
+   }
+
+   cmdlen = __GLX_PAD(__GLX_COMPRESSED_TEXIMAGE_CMD_HDR_SIZE + compsize);
+   if (cmdlen <= gc->maxSmallRenderCommandSize) {
+      __GLX_BEGIN_VARIABLE(rop, cmdlen);
+      __GLX_PUT_LONG(4, target);
+      __GLX_PUT_LONG(8, level);
+      __GLX_PUT_LONG(12, internal_format);
+      __GLX_PUT_LONG(16, width);
+      __GLX_PUT_LONG(20, height);
+      __GLX_PUT_LONG(24, border);
+      __GLX_PUT_LONG(28, image_size);
+      if (compsize != 0) {
+         __GLX_PUT_CHAR_ARRAY(__GLX_COMPRESSED_TEXIMAGE_CMD_HDR_SIZE,
+                              data, image_size);
+      }
+      __GLX_END(cmdlen);
+   }
+   else {
+      assert(compsize != 0);
+
+      __GLX_BEGIN_VARIABLE_LARGE(rop, cmdlen + 4);
+      __GLX_PUT_LONG(8, target);
+      __GLX_PUT_LONG(12, level);
+      __GLX_PUT_LONG(16, internal_format);
+      __GLX_PUT_LONG(20, width);
+      __GLX_PUT_LONG(24, height);
+      __GLX_PUT_LONG(28, border);
+      __GLX_PUT_LONG(32, image_size);
+      __glXSendLargeCommand(gc, gc->pc,
+                            __GLX_COMPRESSED_TEXIMAGE_CMD_HDR_SIZE + 4,
+                            data, image_size);
+   }
+}
+
+
+/**
+ * Internal function used for \c glCompressedTexSubImage1D and
+ * \c glCompressedTexSubImage2D.
+ */
+static void
+CompressedTexSubImage1D2D(GLenum target, GLint level,
+                          GLsizei xoffset, GLsizei yoffset,
+                          GLsizei width, GLsizei height,
+                          GLenum format, GLsizei image_size,
+                          const GLvoid * data, CARD32 rop)
+{
+   __GLX_DECLARE_VARIABLES();
+
+   __GLX_LOAD_VARIABLES();
+   if (gc->currentDpy == NULL) {
+      return;
+   }
+
+   if (target == GL_PROXY_TEXTURE_3D) {
+      compsize = 0;
+   }
+   else {
+      compsize = image_size;
+   }
+
+   cmdlen = __GLX_PAD(__GLX_COMPRESSED_TEXSUBIMAGE_CMD_HDR_SIZE + compsize);
+   if (cmdlen <= gc->maxSmallRenderCommandSize) {
+      __GLX_BEGIN_VARIABLE(rop, cmdlen);
+      __GLX_PUT_LONG(4, target);
+      __GLX_PUT_LONG(8, level);
+      __GLX_PUT_LONG(12, xoffset);
+      __GLX_PUT_LONG(16, yoffset);
+      __GLX_PUT_LONG(20, width);
+      __GLX_PUT_LONG(24, height);
+      __GLX_PUT_LONG(28, format);
+      __GLX_PUT_LONG(32, image_size);
+      if (compsize != 0) {
+         __GLX_PUT_CHAR_ARRAY(__GLX_COMPRESSED_TEXSUBIMAGE_CMD_HDR_SIZE,
+                              data, image_size);
+      }
+      __GLX_END(cmdlen);
+   }
+   else {
+      assert(compsize != 0);
+
+      __GLX_BEGIN_VARIABLE_LARGE(rop, cmdlen + 4);
+      __GLX_PUT_LONG(8, target);
+      __GLX_PUT_LONG(12, level);
+      __GLX_PUT_LONG(16, xoffset);
+      __GLX_PUT_LONG(20, yoffset);
+      __GLX_PUT_LONG(24, width);
+      __GLX_PUT_LONG(28, height);
+      __GLX_PUT_LONG(32, format);
+      __GLX_PUT_LONG(36, image_size);
+      __glXSendLargeCommand(gc, gc->pc,
+                            __GLX_COMPRESSED_TEXSUBIMAGE_CMD_HDR_SIZE + 4,
+                            data, image_size);
+   }
+}
+
+
+void
+__indirect_glCompressedTexImage1D(GLenum target, GLint level,
+                                     GLenum internal_format, GLsizei width,
+                                     GLint border, GLsizei image_size,
+                                     const GLvoid * data)
+{
+   CompressedTexImage1D2D(target, level, internal_format, width, 0,
+                          border, image_size, data,
+                          X_GLrop_CompressedTexImage1D);
+}
+
+
+void
+__indirect_glCompressedTexImage2D(GLenum target, GLint level,
+                                     GLenum internal_format,
+                                     GLsizei width, GLsizei height,
+                                     GLint border, GLsizei image_size,
+                                     const GLvoid * data)
+{
+   CompressedTexImage1D2D(target, level, internal_format, width, height,
+                          border, image_size, data,
+                          X_GLrop_CompressedTexImage2D);
+}
+
+
+void
+__indirect_glCompressedTexImage3D(GLenum target, GLint level,
+                                     GLenum internal_format,
+                                     GLsizei width, GLsizei height,
+                                     GLsizei depth, GLint border,
+                                     GLsizei image_size, const GLvoid * data)
+{
+   __GLX_DECLARE_VARIABLES();
+
+   __GLX_LOAD_VARIABLES();
+   if (gc->currentDpy == NULL) {
+      return;
+   }
+
+   cmdlen = __GLX_PAD(__GLX_COMPRESSED_TEXIMAGE_3D_CMD_HDR_SIZE + image_size);
+   if (cmdlen <= gc->maxSmallRenderCommandSize) {
+      __GLX_BEGIN_VARIABLE(X_GLrop_CompressedTexImage3D, cmdlen);
+      __GLX_PUT_LONG(4, target);
+      __GLX_PUT_LONG(8, level);
+      __GLX_PUT_LONG(12, internal_format);
+      __GLX_PUT_LONG(16, width);
+      __GLX_PUT_LONG(20, height);
+      __GLX_PUT_LONG(24, depth);
+      __GLX_PUT_LONG(28, border);
+      __GLX_PUT_LONG(32, image_size);
+      if (image_size != 0) {
+         __GLX_PUT_CHAR_ARRAY(__GLX_COMPRESSED_TEXIMAGE_3D_CMD_HDR_SIZE,
+                              data, image_size);
+      }
+      __GLX_END(cmdlen);
+   }
+   else {
+      __GLX_BEGIN_VARIABLE_LARGE(X_GLrop_CompressedTexImage3D, cmdlen + 4);
+      __GLX_PUT_LONG(8, target);
+      __GLX_PUT_LONG(12, level);
+      __GLX_PUT_LONG(16, internal_format);
+      __GLX_PUT_LONG(20, width);
+      __GLX_PUT_LONG(24, height);
+      __GLX_PUT_LONG(28, depth);
+      __GLX_PUT_LONG(32, border);
+      __GLX_PUT_LONG(36, image_size);
+      __glXSendLargeCommand(gc, gc->pc,
+                            __GLX_COMPRESSED_TEXIMAGE_3D_CMD_HDR_SIZE + 4,
+                            data, image_size);
+   }
+}
+
+
+void
+__indirect_glCompressedTexSubImage1D(GLenum target, GLint level,
+                                        GLint xoffset,
+                                        GLsizei width,
+                                        GLenum format, GLsizei image_size,
+                                        const GLvoid * data)
+{
+   CompressedTexSubImage1D2D(target, level, xoffset, 0, width, 0,
+                             format, image_size, data,
+                             X_GLrop_CompressedTexSubImage1D);
+}
+
+
+void
+__indirect_glCompressedTexSubImage2D(GLenum target, GLint level,
+                                        GLint xoffset, GLint yoffset,
+                                        GLsizei width, GLsizei height,
+                                        GLenum format, GLsizei image_size,
+                                        const GLvoid * data)
+{
+   CompressedTexSubImage1D2D(target, level, xoffset, yoffset, width, height,
+                             format, image_size, data,
+                             X_GLrop_CompressedTexSubImage2D);
+}
+
+
+void
+__indirect_glCompressedTexSubImage3D(GLenum target, GLint level,
+                                        GLint xoffset, GLint yoffset,
+                                        GLint zoffset, GLsizei width,
+                                        GLsizei height, GLsizei depth,
+                                        GLenum format, GLsizei image_size,
+                                        const GLvoid * data)
+{
+   __GLX_DECLARE_VARIABLES();
+
+   __GLX_LOAD_VARIABLES();
+   if (gc->currentDpy == NULL) {
+      return;
+   }
+
+   cmdlen = __GLX_PAD(__GLX_COMPRESSED_TEXSUBIMAGE_3D_CMD_HDR_SIZE
+                      + image_size);
+   if (cmdlen <= gc->maxSmallRenderCommandSize) {
+      __GLX_BEGIN_VARIABLE(X_GLrop_CompressedTexSubImage3D, cmdlen);
+      __GLX_PUT_LONG(4, target);
+      __GLX_PUT_LONG(8, level);
+      __GLX_PUT_LONG(12, xoffset);
+      __GLX_PUT_LONG(16, yoffset);
+      __GLX_PUT_LONG(20, zoffset);
+      __GLX_PUT_LONG(24, width);
+      __GLX_PUT_LONG(28, height);
+      __GLX_PUT_LONG(32, depth);
+      __GLX_PUT_LONG(36, format);
+      __GLX_PUT_LONG(40, image_size);
+      if (image_size != 0) {
+         __GLX_PUT_CHAR_ARRAY(__GLX_COMPRESSED_TEXSUBIMAGE_3D_CMD_HDR_SIZE,
+                              data, image_size);
+      }
+      __GLX_END(cmdlen);
+   }
+   else {
+      __GLX_BEGIN_VARIABLE_LARGE(X_GLrop_CompressedTexSubImage3D, cmdlen + 4);
+      __GLX_PUT_LONG(8, target);
+      __GLX_PUT_LONG(12, level);
+      __GLX_PUT_LONG(16, xoffset);
+      __GLX_PUT_LONG(20, yoffset);
+      __GLX_PUT_LONG(24, zoffset);
+      __GLX_PUT_LONG(28, width);
+      __GLX_PUT_LONG(32, height);
+      __GLX_PUT_LONG(36, depth);
+      __GLX_PUT_LONG(40, format);
+      __GLX_PUT_LONG(44, image_size);
+      __glXSendLargeCommand(gc, gc->pc,
+                            __GLX_COMPRESSED_TEXSUBIMAGE_3D_CMD_HDR_SIZE + 4,
+                            data, image_size);
+   }
+}