render2.c

mesa-6.5-minigui源码

/* $XFree86: xc/lib/GL/glx/render2.c,v 1.6 2004/01/31 09:29:33 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 "packrender.h"
#include "indirect.h"
#include "indirect_size.h"

/*
** This file contains routines that might need to be transported as
** GLXRender or GLXRenderLarge commands, and these commands don't
** use the pixel header.  See renderpix.c for those routines.
*/

void __indirect_glMap1d(GLenum target, GLdouble u1, GLdouble u2, GLint stride,
	     GLint order, const GLdouble *pnts)
{
    __GLX_DECLARE_VARIABLES();
    GLint k;

    __GLX_LOAD_VARIABLES();
    k = __glMap1d_size(target);
    if (k == 0) {
	__glXSetError(gc, GL_INVALID_ENUM);
	return;
    } else if (stride < k || order <= 0) {
	__glXSetError(gc, GL_INVALID_VALUE);
	return;
    }
    compsize = k * order * __GLX_SIZE_FLOAT64;
    cmdlen = 28+compsize;
    if (!gc->currentDpy) return;

    if (cmdlen <= gc->maxSmallRenderCommandSize) {
	/* Use GLXRender protocol to send small command */
	__GLX_BEGIN_VARIABLE(X_GLrop_Map1d,cmdlen);
	__GLX_PUT_DOUBLE(4,u1);
	__GLX_PUT_DOUBLE(12,u2);
	__GLX_PUT_LONG(20,target);
	__GLX_PUT_LONG(24,order);
	/*
	** NOTE: the doubles that follow are not aligned because of 3
	** longs preceeding
	*/
	__glFillMap1d(k, order, stride, pnts, (pc+28));
	__GLX_END(cmdlen);
    } else {
	/* Use GLXRenderLarge protocol to send command */
	__GLX_BEGIN_VARIABLE_LARGE(X_GLrop_Map1d,cmdlen+4);
	__GLX_PUT_DOUBLE(8,u1);
	__GLX_PUT_DOUBLE(16,u2);
	__GLX_PUT_LONG(24,target);
	__GLX_PUT_LONG(28,order);

	/*
	** NOTE: the doubles that follow are not aligned because of 3
	** longs preceeding
	*/
	if (stride != k) {
	    GLubyte *buf;

	    buf = (GLubyte *) Xmalloc(compsize);
	    if (!buf) {
		__glXSetError(gc, GL_OUT_OF_MEMORY);
		return;
	    }
	    __glFillMap1d(k, order, stride, pnts, buf);
	    __glXSendLargeCommand(gc, pc, 32, buf, compsize);
	    Xfree((char*) buf);
	} else {
	    /* Data is already packed.  Just send it out */
	    __glXSendLargeCommand(gc, pc, 32, pnts, compsize);
	}
    }
}

void __indirect_glMap1f(GLenum target, GLfloat u1, GLfloat u2, GLint stride,
	     GLint order, const GLfloat *pnts)
{
    __GLX_DECLARE_VARIABLES();
    GLint k;

    __GLX_LOAD_VARIABLES();
    k = __glMap1f_size(target);
    if (k == 0) {
	__glXSetError(gc, GL_INVALID_ENUM);
	return;
    } else if (stride < k || order <= 0) {
	__glXSetError(gc, GL_INVALID_VALUE);
	return;
    }
    compsize = k * order * __GLX_SIZE_FLOAT32;
    cmdlen = 20+compsize;
    if (!gc->currentDpy) return;

    /*
    ** The order that arguments are packed is different from the order
    ** for glMap1d.
    */
    if (cmdlen <= gc->maxSmallRenderCommandSize) {
	/* Use GLXRender protocol to send small command */
	__GLX_BEGIN_VARIABLE(X_GLrop_Map1f,cmdlen);
	__GLX_PUT_LONG(4,target);
	__GLX_PUT_FLOAT(8,u1);
	__GLX_PUT_FLOAT(12,u2);
	__GLX_PUT_LONG(16,order);
	__glFillMap1f(k, order, stride, pnts, (GLubyte*) (pc+20));
	__GLX_END(cmdlen);
    } else {
	/* Use GLXRenderLarge protocol to send command */
	__GLX_BEGIN_VARIABLE_LARGE(X_GLrop_Map1f,cmdlen+4);
	__GLX_PUT_LONG(8,target);
	__GLX_PUT_FLOAT(12,u1);
	__GLX_PUT_FLOAT(16,u2);
	__GLX_PUT_LONG(20,order);

	if (stride != k) {
	    GLubyte *buf;

	    buf = (GLubyte *) Xmalloc(compsize);
	    if (!buf) {
		__glXSetError(gc, GL_OUT_OF_MEMORY);
		return;
	    }
	    __glFillMap1f(k, order, stride, pnts, buf);
	    __glXSendLargeCommand(gc, pc, 24, buf, compsize);
	    Xfree((char*) buf);
	} else {
	    /* Data is already packed.  Just send it out */
	    __glXSendLargeCommand(gc, pc, 24, pnts, compsize);
	}
    }
}

void __indirect_glMap2d(GLenum target, GLdouble u1, GLdouble u2, GLint ustr, GLint uord,
	     GLdouble v1, GLdouble v2, GLint vstr, GLint vord,
	     const GLdouble *pnts)
{
    __GLX_DECLARE_VARIABLES();
    GLint k;

    __GLX_LOAD_VARIABLES();
    k = __glMap2d_size(target);
    if (k == 0) {
	__glXSetError(gc, GL_INVALID_ENUM);
	return;
    } else if (vstr < k || ustr < k || vord <= 0 || uord <= 0) {
	__glXSetError(gc, GL_INVALID_VALUE);
	return;
    }
    compsize = k * uord * vord * __GLX_SIZE_FLOAT64;
    cmdlen = 48+compsize; 
    if (!gc->currentDpy) return;

    if (cmdlen <= gc->maxSmallRenderCommandSize) {
	/* Use GLXRender protocol to send small command */
	__GLX_BEGIN_VARIABLE(X_GLrop_Map2d,cmdlen);
	__GLX_PUT_DOUBLE(4,u1);
	__GLX_PUT_DOUBLE(12,u2);
	__GLX_PUT_DOUBLE(20,v1);
	__GLX_PUT_DOUBLE(28,v2);
	__GLX_PUT_LONG(36,target);
	__GLX_PUT_LONG(40,uord);
	__GLX_PUT_LONG(44,vord);
	/*
	** Pack into a u-major ordering.
	** NOTE: the doubles that follow are not aligned because of 5
	** longs preceeding
	*/
	__glFillMap2d(k, uord, vord, ustr, vstr, pnts, (GLdouble*) (pc+48));
	__GLX_END(cmdlen);
    } else {
	/* Use GLXRenderLarge protocol to send command */
	__GLX_BEGIN_VARIABLE_LARGE(X_GLrop_Map2d,cmdlen+4);
	__GLX_PUT_DOUBLE(8,u1);
	__GLX_PUT_DOUBLE(16,u2);
	__GLX_PUT_DOUBLE(24,v1);
	__GLX_PUT_DOUBLE(32,v2);
	__GLX_PUT_LONG(40,target);
	__GLX_PUT_LONG(44,uord);
	__GLX_PUT_LONG(48,vord);

	/*
	** NOTE: the doubles that follow are not aligned because of 5
	** longs preceeding
	*/
	if ((vstr != k) || (ustr != k*vord)) {
	    GLdouble *buf;

	    buf = (GLdouble *) Xmalloc(compsize);
	    if (!buf) {
		__glXSetError(gc, GL_OUT_OF_MEMORY);
		return;
	    }
	    /*
	    ** Pack into a u-major ordering.
	    */
	    __glFillMap2d(k, uord, vord, ustr, vstr, pnts, buf);
	    __glXSendLargeCommand(gc, pc, 52, buf, compsize);
	    Xfree((char*) buf);
	} else {
	    /* Data is already packed.  Just send it out */
	    __glXSendLargeCommand(gc, pc, 52, pnts, compsize);
	}
    }
}

void __indirect_glMap2f(GLenum target, GLfloat u1, GLfloat u2, GLint ustr, GLint uord,
	     GLfloat v1, GLfloat v2, GLint vstr, GLint vord,
	     const GLfloat *pnts)
{
    __GLX_DECLARE_VARIABLES();
    GLint k;

    __GLX_LOAD_VARIABLES();
    k = __glMap2f_size(target);
    if (k == 0) {
	__glXSetError(gc, GL_INVALID_ENUM);
	return;
    } else if (vstr < k || ustr < k || vord <= 0 || uord <= 0) {
	__glXSetError(gc, GL_INVALID_VALUE);
	return;
    }
    compsize = k * uord * vord * __GLX_SIZE_FLOAT32;
    cmdlen = 32+compsize; 
    if (!gc->currentDpy) return;

    /*
    ** The order that arguments are packed is different from the order
    ** for glMap2d.
    */
    if (cmdlen <= gc->maxSmallRenderCommandSize) {
	/* Use GLXRender protocol to send small command */
	__GLX_BEGIN_VARIABLE(X_GLrop_Map2f,cmdlen);
	__GLX_PUT_LONG(4,target);
	__GLX_PUT_FLOAT(8,u1);
	__GLX_PUT_FLOAT(12,u2);
	__GLX_PUT_LONG(16,uord);
	__GLX_PUT_FLOAT(20,v1);
	__GLX_PUT_FLOAT(24,v2);
	__GLX_PUT_LONG(28,vord);
	/*
	** Pack into a u-major ordering.
	*/
	__glFillMap2f(k, uord, vord, ustr, vstr, pnts, (GLfloat*) (pc+32));
	__GLX_END(cmdlen);
    } else {
	/* Use GLXRenderLarge protocol to send command */
	__GLX_BEGIN_VARIABLE_LARGE(X_GLrop_Map2f,cmdlen+4);
	__GLX_PUT_LONG(8,target);
	__GLX_PUT_FLOAT(12,u1);
	__GLX_PUT_FLOAT(16,u2);
	__GLX_PUT_LONG(20,uord);
	__GLX_PUT_FLOAT(24,v1);
	__GLX_PUT_FLOAT(28,v2);
	__GLX_PUT_LONG(32,vord);

	if ((vstr != k) || (ustr != k*vord)) {
	    GLfloat *buf;

	    buf = (GLfloat *) Xmalloc(compsize);
	    if (!buf) {
		__glXSetError(gc, GL_OUT_OF_MEMORY);
		return;
	    }
	    /*
	    ** Pack into a u-major ordering.
	    */
	    __glFillMap2f(k, uord, vord, ustr, vstr, pnts, buf);
	    __glXSendLargeCommand(gc, pc, 36, buf, compsize);
	    Xfree((char*) buf);
	} else {
	    /* Data is already packed.  Just send it out */
	    __glXSendLargeCommand(gc, pc, 36, pnts, compsize);
	}
    }
}

void __indirect_glEnable(GLenum cap)
{
    __GLX_DECLARE_VARIABLES();

    __GLX_LOAD_VARIABLES();
    if (!gc->currentDpy) return;

    switch(cap) {
	case GL_COLOR_ARRAY:
	case GL_EDGE_FLAG_ARRAY:
	case GL_INDEX_ARRAY:
	case GL_NORMAL_ARRAY:
	case GL_TEXTURE_COORD_ARRAY:
	case GL_VERTEX_ARRAY:
	case GL_SECONDARY_COLOR_ARRAY:
	case GL_FOG_COORD_ARRAY:
	    __indirect_glEnableClientState(cap);
	    return;
	default:
	    break;
    }

    __GLX_BEGIN(X_GLrop_Enable,8);
    __GLX_PUT_LONG(4,cap);
    __GLX_END(8);
}

void __indirect_glDisable(GLenum cap)
{
    __GLX_DECLARE_VARIABLES();

    __GLX_LOAD_VARIABLES();
    if (!gc->currentDpy) return;

    switch(cap) {
	case GL_COLOR_ARRAY:
	case GL_EDGE_FLAG_ARRAY:
	case GL_INDEX_ARRAY:
	case GL_NORMAL_ARRAY:
	case GL_TEXTURE_COORD_ARRAY:
	case GL_VERTEX_ARRAY:
	case GL_SECONDARY_COLOR_ARRAY:
	case GL_FOG_COORD_ARRAY:
	    __indirect_glDisableClientState(cap);
	    return;
	default:
	    break;
    }

    __GLX_BEGIN(X_GLrop_Disable,8);
    __GLX_PUT_LONG(4,cap);
    __GLX_END(8);
}