mirror of https://gitlab.freedesktop.org/mesa/mesa
331 lines
8.4 KiB
C
331 lines
8.4 KiB
C
/*
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* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
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* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
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*
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* SPDX-License-Identifier: SGI-B-2.0
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*/
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#include "glxclient.h"
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#include "indirect.h"
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#include "util/rounding.h"
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#if !defined(__GNUC__)
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# define __builtin_expect(x, y) x
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#endif
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/**
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* Send glPixelStore command to the server
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*
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* \param gc Current GLX context
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* \param sop Either \c X_GLsop_PixelStoref or \c X_GLsop_PixelStorei
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* \param pname Selector of which pixel parameter is to be set.
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* \param param Value that \c pname is set to.
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*
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* \sa __indirect_glPixelStorei, __indirect_glPixelStoref
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*/
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static void
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send_PixelStore(struct glx_context * gc, unsigned sop, GLenum pname,
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const void *param)
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{
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Display *const dpy = gc->currentDpy;
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const GLuint cmdlen = 8;
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if (__builtin_expect(dpy != NULL, 1)) {
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GLubyte const *pc = __glXSetupSingleRequest(gc, sop, cmdlen);
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(void) memcpy((void *) (pc + 0), (void *) (&pname), 4);
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(void) memcpy((void *) (pc + 4), param, 4);
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UnlockDisplay(dpy);
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SyncHandle();
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}
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return;
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}
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/*
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** Specify parameters that control the storage format of pixel arrays.
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*/
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void
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__indirect_glPixelStoref(GLenum pname, GLfloat param)
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{
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struct glx_context *gc = __glXGetCurrentContext();
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__GLXattribute *state = gc->client_state_private;
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Display *dpy = gc->currentDpy;
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GLuint a;
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if (!dpy)
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return;
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switch (pname) {
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case GL_PACK_ROW_LENGTH:
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a = _mesa_lroundevenf(param);
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if (((GLint) a) < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storePack.rowLength = a;
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break;
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case GL_PACK_IMAGE_HEIGHT:
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a = _mesa_lroundevenf(param);
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if (((GLint) a) < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storePack.imageHeight = a;
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break;
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case GL_PACK_SKIP_ROWS:
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a = _mesa_lroundevenf(param);
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if (((GLint) a) < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storePack.skipRows = a;
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break;
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case GL_PACK_SKIP_PIXELS:
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a = _mesa_lroundevenf(param);
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if (((GLint) a) < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storePack.skipPixels = a;
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break;
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case GL_PACK_SKIP_IMAGES:
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a = _mesa_lroundevenf(param);
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if (((GLint) a) < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storePack.skipImages = a;
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break;
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case GL_PACK_ALIGNMENT:
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a = _mesa_lroundevenf(param);
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switch (a) {
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case 1:
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case 2:
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case 4:
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case 8:
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state->storePack.alignment = a;
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break;
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default:
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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break;
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case GL_PACK_SWAP_BYTES:
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state->storePack.swapEndian = (param != 0);
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break;
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case GL_PACK_LSB_FIRST:
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state->storePack.lsbFirst = (param != 0);
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break;
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case GL_UNPACK_ROW_LENGTH:
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a = _mesa_lroundevenf(param);
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if (((GLint) a) < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storeUnpack.rowLength = a;
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break;
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case GL_UNPACK_IMAGE_HEIGHT:
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a = _mesa_lroundevenf(param);
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if (((GLint) a) < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storeUnpack.imageHeight = a;
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break;
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case GL_UNPACK_SKIP_ROWS:
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a = _mesa_lroundevenf(param);
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if (((GLint) a) < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storeUnpack.skipRows = a;
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break;
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case GL_UNPACK_SKIP_PIXELS:
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a = _mesa_lroundevenf(param);
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if (((GLint) a) < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storeUnpack.skipPixels = a;
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break;
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case GL_UNPACK_SKIP_IMAGES:
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a = _mesa_lroundevenf(param);
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if (((GLint) a) < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storeUnpack.skipImages = a;
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break;
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case GL_UNPACK_ALIGNMENT:
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a = _mesa_lroundevenf(param);
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switch (a) {
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case 1:
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case 2:
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case 4:
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case 8:
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state->storeUnpack.alignment = a;
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break;
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default:
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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break;
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case GL_UNPACK_SWAP_BYTES:
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state->storeUnpack.swapEndian = (param != 0);
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break;
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case GL_UNPACK_LSB_FIRST:
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state->storeUnpack.lsbFirst = (param != 0);
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break;
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/* Group all of the pixel store modes that need to be sent to the
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* server here. Care must be used to only send modes to the server that
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* won't affect the size of the data sent to or received from the
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* server. GL_PACK_INVERT_MESA is safe in this respect, but other,
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* future modes may not be.
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*/
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case GL_PACK_INVERT_MESA:
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send_PixelStore(gc, X_GLsop_PixelStoref, pname, ¶m);
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break;
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default:
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__glXSetError(gc, GL_INVALID_ENUM);
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break;
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}
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}
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void
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__indirect_glPixelStorei(GLenum pname, GLint param)
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{
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struct glx_context *gc = __glXGetCurrentContext();
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__GLXattribute *state = gc->client_state_private;
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Display *dpy = gc->currentDpy;
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if (!dpy)
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return;
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switch (pname) {
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case GL_PACK_ROW_LENGTH:
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if (param < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storePack.rowLength = param;
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break;
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case GL_PACK_IMAGE_HEIGHT:
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if (param < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storePack.imageHeight = param;
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break;
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case GL_PACK_SKIP_ROWS:
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if (param < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storePack.skipRows = param;
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break;
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case GL_PACK_SKIP_PIXELS:
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if (param < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storePack.skipPixels = param;
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break;
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case GL_PACK_SKIP_IMAGES:
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if (param < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storePack.skipImages = param;
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break;
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case GL_PACK_ALIGNMENT:
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switch (param) {
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case 1:
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case 2:
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case 4:
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case 8:
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state->storePack.alignment = param;
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break;
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default:
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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break;
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case GL_PACK_SWAP_BYTES:
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state->storePack.swapEndian = (param != 0);
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break;
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case GL_PACK_LSB_FIRST:
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state->storePack.lsbFirst = (param != 0);
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break;
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case GL_UNPACK_ROW_LENGTH:
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if (param < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storeUnpack.rowLength = param;
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break;
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case GL_UNPACK_IMAGE_HEIGHT:
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if (param < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storeUnpack.imageHeight = param;
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break;
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case GL_UNPACK_SKIP_ROWS:
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if (param < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storeUnpack.skipRows = param;
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break;
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case GL_UNPACK_SKIP_PIXELS:
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if (param < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storeUnpack.skipPixels = param;
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break;
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case GL_UNPACK_SKIP_IMAGES:
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if (param < 0) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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state->storeUnpack.skipImages = param;
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break;
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case GL_UNPACK_ALIGNMENT:
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switch (param) {
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case 1:
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case 2:
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case 4:
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case 8:
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state->storeUnpack.alignment = param;
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break;
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default:
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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break;
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case GL_UNPACK_SWAP_BYTES:
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state->storeUnpack.swapEndian = (param != 0);
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break;
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case GL_UNPACK_LSB_FIRST:
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state->storeUnpack.lsbFirst = (param != 0);
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break;
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/* Group all of the pixel store modes that need to be sent to the
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* server here. Care must be used to only send modes to the server that
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* won't affect the size of the data sent to or received from the
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* server. GL_PACK_INVERT_MESA is safe in this respect, but other,
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* future modes may not be.
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*/
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case GL_PACK_INVERT_MESA:
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send_PixelStore(gc, X_GLsop_PixelStorei, pname, ¶m);
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break;
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default:
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__glXSetError(gc, GL_INVALID_ENUM);
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break;
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}
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}
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