| 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 __handleCombinerParameterData( GLenum pname, const GLfloat *params, GLenum extended_opcode )
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| 11 | {
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| 12 | CR_GET_PACKER_CONTEXT(pc);
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| 13 | unsigned int params_length = 0;
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| 14 | unsigned int packet_length = sizeof( int ) + sizeof( extended_opcode ) + sizeof( pname );
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| 15 | unsigned char *data_ptr;
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| 16 |
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| 17 | switch( pname )
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| 18 | {
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| 19 | case GL_CONSTANT_COLOR0_NV:
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| 20 | case GL_CONSTANT_COLOR1_NV:
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| 21 | params_length = 4 * sizeof( *params );
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| 22 | break;
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| 23 | case GL_NUM_GENERAL_COMBINERS_NV:
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| 24 | case GL_COLOR_SUM_CLAMP_NV:
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| 25 | params_length = sizeof( *params );
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| 26 | break;
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| 27 | default:
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| 28 | __PackError( __LINE__, __FILE__, GL_INVALID_ENUM,
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| 29 | "crPackCombinerParameter(bad pname)" );
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| 30 | CRASSERT(0);
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| 31 | return GL_FALSE;
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| 32 | }
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| 33 | packet_length += params_length;
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| 34 | CR_GET_BUFFERED_POINTER(pc, packet_length );
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| 35 | WRITE_DATA( 0, int, packet_length );
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| 36 | WRITE_DATA( sizeof( int ) + 0, GLenum, extended_opcode );
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| 37 | WRITE_DATA( sizeof( int ) + 4, GLenum, pname );
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| 38 | WRITE_DATA( sizeof( int ) + 8, GLfloat, params[0] );
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| 39 | if (params_length > sizeof( *params ))
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| 40 | {
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| 41 | WRITE_DATA( sizeof( int ) + 12, GLfloat, params[1] );
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| 42 | WRITE_DATA( sizeof( int ) + 16, GLfloat, params[2] );
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| 43 | WRITE_DATA( sizeof( int ) + 20, GLfloat, params[3] );
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| 44 | CRASSERT(packet_length == sizeof(int) + 20 + 4);
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| 45 | }
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| 46 | return GL_TRUE;
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| 47 | }
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| 48 |
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| 49 | void PACK_APIENTRY crPackCombinerParameterfvNV( GLenum pname, const GLfloat *params )
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| 50 | {
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| 51 | CR_GET_PACKER_CONTEXT(pc);
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| 52 | if (__handleCombinerParameterData( pname, params, CR_COMBINERPARAMETERFVNV_EXTEND_OPCODE ))
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| 53 | WRITE_OPCODE( pc, CR_EXTEND_OPCODE );
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| 54 | CR_UNLOCK_PACKER_CONTEXT(pc);
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| 55 | }
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| 56 |
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| 57 | void PACK_APIENTRY crPackCombinerParameterivNV( GLenum pname, const GLint *params )
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| 58 | {
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| 59 | /* floats and ints are the same size, so the packing should be the same */
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| 60 | CR_GET_PACKER_CONTEXT(pc);
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| 61 | if (__handleCombinerParameterData( pname, (const GLfloat *) params, CR_COMBINERPARAMETERIVNV_EXTEND_OPCODE ))
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| 62 | WRITE_OPCODE( pc, CR_EXTEND_OPCODE );
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| 63 | CR_UNLOCK_PACKER_CONTEXT(pc);
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| 64 | }
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| 65 |
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| 66 | void PACK_APIENTRY crPackCombinerStageParameterfvNV( GLenum stage, GLenum pname, const GLfloat *params )
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| 67 | {
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| 68 | CR_GET_PACKER_CONTEXT(pc);
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| 69 | unsigned char *data_ptr;
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| 70 |
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| 71 | CR_GET_BUFFERED_POINTER(pc, 32 );
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| 72 | WRITE_DATA( 0, GLint, 32 );
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| 73 | WRITE_DATA( 4, GLenum, CR_COMBINERSTAGEPARAMETERFVNV_EXTEND_OPCODE );
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| 74 | WRITE_DATA( 8, GLenum, stage );
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| 75 | WRITE_DATA( 12, GLenum, pname );
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| 76 | WRITE_DATA( 16, GLfloat, params[0] );
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| 77 | WRITE_DATA( 20, GLfloat, params[1] );
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| 78 | WRITE_DATA( 24, GLfloat, params[2] );
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| 79 | WRITE_DATA( 28, GLfloat, params[3] );
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| 80 | WRITE_OPCODE( pc, CR_EXTEND_OPCODE );
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| 81 | CR_UNLOCK_PACKER_CONTEXT(pc);
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| 82 | }
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