pack_fog.c revision e0e0c19eefceaf5d4ec40f9466b58a771f50e799
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync/* Copyright (c) 2001, Stanford University
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync * All rights reserved
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync *
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync * See the file LICENSE.txt for information on redistributing this software.
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync */
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync#include "packer.h"
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync#include "cr_opcodes.h"
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsyncstatic GLboolean __handleFogData( GLenum pname, const GLfloat *params )
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync{
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync GET_PACKER_CONTEXT(pc);
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync int params_length = 0;
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync int packet_length = sizeof( int ) + sizeof( pname );
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync unsigned char *data_ptr;
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync switch( pname )
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync {
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync case GL_FOG_MODE:
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync case GL_FOG_DENSITY:
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync case GL_FOG_START:
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync case GL_FOG_END:
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync case GL_FOG_INDEX:
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync params_length = sizeof( *params );
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync break;
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync case GL_FOG_COLOR:
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync params_length = 4*sizeof( *params );
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync break;
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync default:
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync params_length = __packFogParamsLength( pname );
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync if (!params_length)
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync {
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync char msg[100];
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync sprintf(msg, "Invalid pname in Fog: %d", (int) pname );
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync __PackError( __LINE__, __FILE__, GL_INVALID_ENUM, msg);
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync return GL_FALSE;
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync }
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync break;
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync }
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync packet_length += params_length;
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync GET_BUFFERED_POINTER(pc, packet_length );
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync WRITE_DATA( 0, int, packet_length );
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync WRITE_DATA( 4, GLenum, pname );
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync WRITE_DATA( 8, GLfloat, params[0] );
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync if (packet_length > 12)
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync {
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync WRITE_DATA( 12, GLfloat, params[1] );
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync WRITE_DATA( 16, GLfloat, params[2] );
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync WRITE_DATA( 20, GLfloat, params[3] );
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync }
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync return GL_TRUE;
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync}
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsyncvoid PACK_APIENTRY crPackFogfv(GLenum pname, const GLfloat *params)
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync{
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync GET_PACKER_CONTEXT(pc);
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync if (__handleFogData( pname, params ))
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync WRITE_OPCODE( pc, CR_FOGFV_OPCODE );
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync}
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsyncvoid PACK_APIENTRY crPackFogiv(GLenum pname, const GLint *params)
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync{
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync GET_PACKER_CONTEXT(pc);
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync /* floats and ints are the same size, so the packing should be the same */
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync if (__handleFogData( pname, (const GLfloat *) params ))
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync WRITE_OPCODE( pc, CR_FOGIV_OPCODE );
e0e0c19eefceaf5d4ec40f9466b58a771f50e799vboxsync}