| 1 | /* Copyright (c) 2001, Stanford University
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| 2 | * All rights reserved
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| 3 | *
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| 4 | * See the file LICENSE.txt for information on redistributing this software.
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| 5 | */
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| 6 |
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| 7 | #include "packer.h"
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| 8 | #include "cr_error.h"
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| 9 | #include "cr_mem.h"
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| 10 |
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| 11 | static int __gl_CallListsNumBytes( GLenum type )
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| 12 | {
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| 13 | switch( type )
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| 14 | {
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| 15 | case GL_BYTE:
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| 16 | case GL_UNSIGNED_BYTE:
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| 17 | case GL_2_BYTES:
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| 18 | return 1;
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| 19 | case GL_SHORT:
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| 20 | case GL_UNSIGNED_SHORT:
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| 21 | case GL_3_BYTES:
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| 22 | return 2;
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| 23 | case GL_INT:
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| 24 | case GL_UNSIGNED_INT:
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| 25 | case GL_FLOAT:
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| 26 | case GL_4_BYTES:
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| 27 | return 4;
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| 28 | default:
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| 29 | return -1;
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| 30 | }
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| 31 | }
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| 32 |
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| 33 | void PACK_APIENTRY crPackCallLists(GLint n, GLenum type,
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| 34 | const GLvoid *lists )
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| 35 | {
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| 36 | unsigned char *data_ptr;
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| 37 | int packet_length;
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| 38 |
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| 39 | int num_bytes = __gl_CallListsNumBytes( type ) * n;
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| 40 | if (num_bytes < 0)
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| 41 | {
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| 42 | __PackError( __LINE__, __FILE__, GL_INVALID_ENUM,
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| 43 | "crPackCallLists(bad type)" );
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| 44 | return;
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| 45 | }
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| 46 |
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| 47 | packet_length =
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| 48 | sizeof( n ) +
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| 49 | sizeof( type ) +
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| 50 | num_bytes;
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| 51 |
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| 52 | data_ptr = (unsigned char *) crPackAlloc( packet_length );
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| 53 | WRITE_DATA( 0, GLint, n );
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| 54 | WRITE_DATA( 4, GLenum, type );
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| 55 | crMemcpy( data_ptr + 8, lists, num_bytes );
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| 56 |
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| 57 | crHugePacket( CR_CALLLISTS_OPCODE, data_ptr );
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| 58 | crPackFree( data_ptr );
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| 59 | }
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| 60 |
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| 61 |
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| 62 |
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| 63 | void PACK_APIENTRY crPackNewList( GLuint list, GLenum mode )
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| 64 | {
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| 65 | GET_PACKER_CONTEXT(pc);
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| 66 | unsigned char *data_ptr;
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| 67 | (void) pc;
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| 68 | GET_BUFFERED_POINTER( pc, 16 );
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| 69 | WRITE_DATA( 0, GLint, 16 );
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| 70 | WRITE_DATA( 4, GLenum, CR_NEWLIST_EXTEND_OPCODE );
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| 71 | WRITE_DATA( 8, GLuint, list );
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| 72 | WRITE_DATA( 12, GLenum, mode );
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| 73 | WRITE_OPCODE( pc, CR_EXTEND_OPCODE );
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| 74 | pc->buffer.in_List = GL_TRUE;
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| 75 | pc->buffer.holds_List = GL_TRUE;
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| 76 | }
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| 77 |
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| 78 | void PACK_APIENTRY crPackEndList( void )
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| 79 | {
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| 80 | GET_PACKER_CONTEXT(pc);
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| 81 | unsigned char *data_ptr;
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| 82 | GET_BUFFERED_POINTER( pc, 8 );
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| 83 | WRITE_DATA( 0, GLint, 8 );
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| 84 | WRITE_DATA( 4, GLenum, CR_ENDLIST_EXTEND_OPCODE );
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| 85 | WRITE_OPCODE( pc, CR_EXTEND_OPCODE );
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| 86 | pc->buffer.in_List = GL_FALSE;
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| 87 | }
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