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-rw-r--r--src/glx/pixelstore.c352
1 files changed, 352 insertions, 0 deletions
diff --git a/src/glx/pixelstore.c b/src/glx/pixelstore.c
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+++ b/src/glx/pixelstore.c
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+/*
+ * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
+ * Copyright (C) 1991-2000 Silicon Graphics, Inc. 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
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * 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 including the dates of first publication and
+ * either this permission notice or a reference to
+ * http://oss.sgi.com/projects/FreeB/
+ * 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * SILICON GRAPHICS, INC. 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.
+ *
+ * Except as contained in this notice, the name of Silicon Graphics, Inc.
+ * shall not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization from
+ * Silicon Graphics, Inc.
+ */
+
+#include "glxclient.h"
+#include "indirect.h"
+
+#if !defined __GNUC__ || __GNUC__ < 3
+# define __builtin_expect(x, y) x
+#endif
+
+/**
+ * Send glPixelStore command to the server
+ *
+ * \param gc Current GLX context
+ * \param sop Either \c X_GLsop_PixelStoref or \c X_GLsop_PixelStorei
+ * \param pname Selector of which pixel parameter is to be set.
+ * \param param Value that \c pname is set to.
+ *
+ * \sa __indirect_glPixelStorei, __indirect_glPixelStoref
+ */
+static void
+send_PixelStore(__GLXcontext * gc, unsigned sop, GLenum pname,
+ const void *param)
+{
+ Display *const dpy = gc->currentDpy;
+ const GLuint cmdlen = 8;
+ if (__builtin_expect(dpy != NULL, 1)) {
+ GLubyte const *pc = __glXSetupSingleRequest(gc, sop, cmdlen);
+ (void) memcpy((void *) (pc + 0), (void *) (&pname), 4);
+ (void) memcpy((void *) (pc + 4), param, 4);
+ UnlockDisplay(dpy);
+ SyncHandle();
+ }
+ return;
+}
+
+/*
+** Specify parameters that control the storage format of pixel arrays.
+*/
+void
+__indirect_glPixelStoref(GLenum pname, GLfloat param)
+{
+ __GLXcontext *gc = __glXGetCurrentContext();
+ __GLXattribute *state = gc->client_state_private;
+ Display *dpy = gc->currentDpy;
+ GLuint a;
+
+ if (!dpy)
+ return;
+
+ switch (pname) {
+ case GL_PACK_ROW_LENGTH:
+ a = (GLuint) (param + 0.5);
+ if (((GLint) a) < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storePack.rowLength = a;
+ break;
+ case GL_PACK_IMAGE_HEIGHT:
+ a = (GLuint) (param + 0.5);
+ if (((GLint) a) < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storePack.imageHeight = a;
+ break;
+ case GL_PACK_SKIP_ROWS:
+ a = (GLuint) (param + 0.5);
+ if (((GLint) a) < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storePack.skipRows = a;
+ break;
+ case GL_PACK_SKIP_PIXELS:
+ a = (GLuint) (param + 0.5);
+ if (((GLint) a) < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storePack.skipPixels = a;
+ break;
+ case GL_PACK_SKIP_IMAGES:
+ a = (GLuint) (param + 0.5);
+ if (((GLint) a) < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storePack.skipImages = a;
+ break;
+ case GL_PACK_ALIGNMENT:
+ a = (GLint) (param + 0.5);
+ switch (a) {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ state->storePack.alignment = a;
+ break;
+ default:
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ break;
+ case GL_PACK_SWAP_BYTES:
+ state->storePack.swapEndian = (param != 0);
+ break;
+ case GL_PACK_LSB_FIRST:
+ state->storePack.lsbFirst = (param != 0);
+ break;
+
+ case GL_UNPACK_ROW_LENGTH:
+ a = (GLuint) (param + 0.5);
+ if (((GLint) a) < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storeUnpack.rowLength = a;
+ break;
+ case GL_UNPACK_IMAGE_HEIGHT:
+ a = (GLuint) (param + 0.5);
+ if (((GLint) a) < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storeUnpack.imageHeight = a;
+ break;
+ case GL_UNPACK_SKIP_ROWS:
+ a = (GLuint) (param + 0.5);
+ if (((GLint) a) < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storeUnpack.skipRows = a;
+ break;
+ case GL_UNPACK_SKIP_PIXELS:
+ a = (GLuint) (param + 0.5);
+ if (((GLint) a) < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storeUnpack.skipPixels = a;
+ break;
+ case GL_UNPACK_SKIP_IMAGES:
+ a = (GLuint) (param + 0.5);
+ if (((GLint) a) < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storeUnpack.skipImages = a;
+ break;
+ case GL_UNPACK_ALIGNMENT:
+ a = (GLint) (param + 0.5);
+ switch (a) {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ state->storeUnpack.alignment = a;
+ break;
+ default:
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ break;
+ case GL_UNPACK_SWAP_BYTES:
+ state->storeUnpack.swapEndian = (param != 0);
+ break;
+ case GL_UNPACK_LSB_FIRST:
+ state->storeUnpack.lsbFirst = (param != 0);
+ break;
+
+ /* Group all of the pixel store modes that need to be sent to the
+ * server here. Care must be used to only send modes to the server that
+ * won't affect the size of the data sent to or received from the
+ * server. GL_PACK_INVERT_MESA is safe in this respect, but other,
+ * future modes may not be.
+ */
+ case GL_PACK_INVERT_MESA:
+ send_PixelStore(gc, X_GLsop_PixelStoref, pname, &param);
+ break;
+
+ default:
+ __glXSetError(gc, GL_INVALID_ENUM);
+ break;
+ }
+}
+
+void
+__indirect_glPixelStorei(GLenum pname, GLint param)
+{
+ __GLXcontext *gc = __glXGetCurrentContext();
+ __GLXattribute *state = gc->client_state_private;
+ Display *dpy = gc->currentDpy;
+
+ if (!dpy)
+ return;
+
+ switch (pname) {
+ case GL_PACK_ROW_LENGTH:
+ if (param < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storePack.rowLength = param;
+ break;
+ case GL_PACK_IMAGE_HEIGHT:
+ if (param < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storePack.imageHeight = param;
+ break;
+ case GL_PACK_SKIP_ROWS:
+ if (param < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storePack.skipRows = param;
+ break;
+ case GL_PACK_SKIP_PIXELS:
+ if (param < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storePack.skipPixels = param;
+ break;
+ case GL_PACK_SKIP_IMAGES:
+ if (param < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storePack.skipImages = param;
+ break;
+ case GL_PACK_ALIGNMENT:
+ switch (param) {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ state->storePack.alignment = param;
+ break;
+ default:
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ break;
+ case GL_PACK_SWAP_BYTES:
+ state->storePack.swapEndian = (param != 0);
+ break;
+ case GL_PACK_LSB_FIRST:
+ state->storePack.lsbFirst = (param != 0);
+ break;
+
+ case GL_UNPACK_ROW_LENGTH:
+ if (param < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storeUnpack.rowLength = param;
+ break;
+ case GL_UNPACK_IMAGE_HEIGHT:
+ if (param < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storeUnpack.imageHeight = param;
+ break;
+ case GL_UNPACK_SKIP_ROWS:
+ if (param < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storeUnpack.skipRows = param;
+ break;
+ case GL_UNPACK_SKIP_PIXELS:
+ if (param < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storeUnpack.skipPixels = param;
+ break;
+ case GL_UNPACK_SKIP_IMAGES:
+ if (param < 0) {
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ state->storeUnpack.skipImages = param;
+ break;
+ case GL_UNPACK_ALIGNMENT:
+ switch (param) {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ state->storeUnpack.alignment = param;
+ break;
+ default:
+ __glXSetError(gc, GL_INVALID_VALUE);
+ return;
+ }
+ break;
+ case GL_UNPACK_SWAP_BYTES:
+ state->storeUnpack.swapEndian = (param != 0);
+ break;
+ case GL_UNPACK_LSB_FIRST:
+ state->storeUnpack.lsbFirst = (param != 0);
+ break;
+
+ /* Group all of the pixel store modes that need to be sent to the
+ * server here. Care must be used to only send modes to the server that
+ * won't affect the size of the data sent to or received from the
+ * server. GL_PACK_INVERT_MESA is safe in this respect, but other,
+ * future modes may not be.
+ */
+ case GL_PACK_INVERT_MESA:
+ send_PixelStore(gc, X_GLsop_PixelStorei, pname, &param);
+ break;
+
+ default:
+ __glXSetError(gc, GL_INVALID_ENUM);
+ break;
+ }
+}
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