| 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_opcodes.h"
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| 9 |
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| 10 | static GLboolean __handleFogData( GLenum pname, const GLfloat *params )
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| 11 | {
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| 12 | CR_GET_PACKER_CONTEXT(pc);
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| 13 | int params_length = 0;
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| 14 | int packet_length = sizeof( int ) + sizeof( pname );
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| 15 | unsigned char *data_ptr;
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| 16 | switch( pname )
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| 17 | {
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| 18 | case GL_FOG_MODE:
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| 19 | case GL_FOG_DENSITY:
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| 20 | case GL_FOG_START:
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| 21 | case GL_FOG_END:
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| 22 | case GL_FOG_INDEX:
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| 23 | params_length = sizeof( *params );
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| 24 | break;
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| 25 | case GL_FOG_COLOR:
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| 26 | params_length = 4*sizeof( *params );
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| 27 | break;
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| 28 | default:
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| 29 | params_length = __packFogParamsLength( pname );
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| 30 | if (!params_length)
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| 31 | {
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| 32 | char msg[100];
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| 33 | sprintf(msg, "Invalid pname in Fog: %d", (int) pname );
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| 34 | __PackError( __LINE__, __FILE__, GL_INVALID_ENUM, msg);
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| 35 | return GL_FALSE;
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| 36 | }
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| 37 | break;
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| 38 | }
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| 39 | packet_length += params_length;
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| 40 |
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| 41 | CR_GET_BUFFERED_POINTER(pc, packet_length );
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| 42 | WRITE_DATA( 0, int, packet_length );
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| 43 | WRITE_DATA( 4, GLenum, pname );
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| 44 | WRITE_DATA( 8, GLfloat, params[0] );
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| 45 | if (packet_length > 12)
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| 46 | {
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| 47 | WRITE_DATA( 12, GLfloat, params[1] );
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| 48 | WRITE_DATA( 16, GLfloat, params[2] );
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| 49 | WRITE_DATA( 20, GLfloat, params[3] );
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| 50 | }
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| 51 | return GL_TRUE;
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| 52 | }
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| 53 |
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| 54 | void PACK_APIENTRY crPackFogfv(GLenum pname, const GLfloat *params)
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| 55 | {
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| 56 | CR_GET_PACKER_CONTEXT(pc);
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| 57 | if (__handleFogData( pname, params ))
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| 58 | WRITE_OPCODE( pc, CR_FOGFV_OPCODE );
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| 59 | CR_UNLOCK_PACKER_CONTEXT(pc);
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| 60 | }
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| 61 |
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| 62 | void PACK_APIENTRY crPackFogiv(GLenum pname, const GLint *params)
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| 63 | {
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| 64 | CR_GET_PACKER_CONTEXT(pc);
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| 65 | /* floats and ints are the same size, so the packing should be the same */
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| 66 | if (__handleFogData( pname, (const GLfloat *) params ))
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| 67 | WRITE_OPCODE( pc, CR_FOGIV_OPCODE );
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| 68 | CR_UNLOCK_PACKER_CONTEXT(pc);
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| 69 | }
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