void InitChromaticTwin2States()
{
//Set up the register combiners
glCombinerParameteriNV(GL_NUM_GENERAL_COMBINERS_NV, 1);
//Disable per-stage constants if we have been using them
if(NV_register_combiners2_supported)
glDisable(GL_PER_STAGE_CONSTANTS_NV);
//Send (1, 0, 0, 0) as constant color 0
GLfloat constant0[]={1.0f, 0.0f, 0.0f, 0.0f};
glCombinerParameterfvNV(GL_CONSTANT_COLOR0_NV, constant0);
//Combiner 0 does: red(tex0)->spare0.rgb
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_A_NV, GL_TEXTURE0_ARB,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_B_NV, GL_CONSTANT_COLOR0_NV,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerOutputNV( GL_COMBINER0_NV, GL_RGB, GL_SPARE0_NV, GL_DISCARD_NV, GL_DISCARD_NV,
GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE);
glFinalCombinerInputNV(GL_VARIABLE_A_NV, GL_PRIMARY_COLOR_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_B_NV, GL_TEXTURE1_ARB, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_C_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_D_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
//Bind vertex program
glBindProgramNV(GL_VERTEX_PROGRAM_NV, chromaticTwin2VP);
//Enable blend to add to first pass
glBlendFunc(GL_ONE, GL_ONE);
glEnable(GL_BLEND);
}
void SetDiffuseDecalStates(void)
{
//Bind textures
//Unit 0 - normal map
glEnable(GL_TEXTURE_2D);
if(showBumps)
glBindTexture(GL_TEXTURE_2D, normalMapTexture);
else
glBindTexture(GL_TEXTURE_2D, flatNormalMap);
//Unit 1 - normalisation cube map
glActiveTextureARB(GL_TEXTURE1_ARB);
glEnable(GL_TEXTURE_CUBE_MAP_ARB);
glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, normalisationCubeMap);
//Unit 2 - decal map
glActiveTextureARB(GL_TEXTURE2_ARB);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, decalTexture);
glActiveTextureARB(GL_TEXTURE0_ARB);
//Set up Register combiners
//1 general combiner
glCombinerParameteriNV(GL_NUM_GENERAL_COMBINERS_NV, 1);
//combiner 0 does tex0.rgb dot tex1.rgb -> spare0.rgb,
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_A_NV, GL_TEXTURE0_ARB,
GL_EXPAND_NORMAL_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_B_NV, GL_TEXTURE1_ARB,
GL_EXPAND_NORMAL_NV, GL_RGB);
glCombinerOutputNV( GL_COMBINER0_NV, GL_RGB, GL_SPARE0_NV, GL_DISCARD_NV, GL_DISCARD_NV,
GL_NONE, GL_NONE, GL_TRUE, GL_FALSE, GL_FALSE);
//final combiner outputs spare0.rgb*texture2.rgb
glFinalCombinerInputNV(GL_VARIABLE_A_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_B_NV, GL_TEXTURE2_ARB, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_C_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_D_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glEnable(GL_REGISTER_COMBINERS_NV);
//Set up vertex program
glEnable(GL_VERTEX_PROGRAM_NV);
glBindProgramNV(GL_VERTEX_PROGRAM_NV, diffuseDecalVertexProgram);
}
void GeneralFunctionStruct::Invoke(int stage, int portion, BiasScaleEnum bs)
{
GLenum portionEnum = (RCP_RGB == portion) ? GL_RGB : GL_ALPHA;
glCombinerInputNV(GL_COMBINER0_NV + stage,
portionEnum,
GL_VARIABLE_A_NV,
op[0].reg[1].reg.bits.name,
op[0].reg[1].map,
MAP_CHANNEL(op[0].reg[1].reg.bits.channel));
glCombinerInputNV(GL_COMBINER0_NV + stage,
portionEnum,
GL_VARIABLE_B_NV,
op[0].reg[2].reg.bits.name,
op[0].reg[2].map,
MAP_CHANNEL(op[0].reg[2].reg.bits.channel));
glCombinerInputNV(GL_COMBINER0_NV + stage,
portionEnum,
GL_VARIABLE_C_NV,
op[1].reg[1].reg.bits.name,
op[1].reg[1].map,
MAP_CHANNEL(op[1].reg[1].reg.bits.channel));
glCombinerInputNV(GL_COMBINER0_NV + stage,
portionEnum,
GL_VARIABLE_D_NV,
op[1].reg[2].reg.bits.name,
op[1].reg[2].map,
MAP_CHANNEL(op[1].reg[2].reg.bits.channel));
glCombinerOutputNV(GL_COMBINER0_NV + stage,
portionEnum,
op[0].reg[0].reg.bits.name,
op[1].reg[0].reg.bits.name,
op[2].reg[0].reg.bits.name,
bs.bits.scale,
bs.bits.bias,
op[0].op,
op[1].op,
(op[2].op == RCP_MUX) ? true : false);
}
void InitChromaticSingleStates()
{
//Set up the register combiners
glCombinerParameteriNV(GL_NUM_GENERAL_COMBINERS_NV, 2);
//Enable per stage constants
glEnable(GL_PER_STAGE_CONSTANTS_NV);
//Send (1, 0, 0, 0) and (0, 1, 0, 0) as combiner 0 constant colors
GLfloat combiner0Constant0[]={1.0f, 0.0f, 0.0f, 0.0f};
glCombinerStageParameterfvNV(GL_COMBINER0_NV, GL_CONSTANT_COLOR0_NV, combiner0Constant0);
GLfloat combiner0Constant1[]={0.0f, 1.0f, 0.0f, 0.0f};
glCombinerStageParameterfvNV(GL_COMBINER0_NV, GL_CONSTANT_COLOR1_NV, combiner0Constant1);
//Send (0, 0, 1, 0) as combiner 1 constant color 0
GLfloat combiner1Constant0[]={0.0f, 0.0f, 1.0f, 0.0f};
glCombinerStageParameterfvNV(GL_COMBINER1_NV, GL_CONSTANT_COLOR0_NV, combiner1Constant0);
//Combiner 0 does: red(tex2)+green(tex1)->spare0.rgb
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_A_NV, GL_TEXTURE2_ARB,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_B_NV, GL_CONSTANT_COLOR0_NV,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_C_NV, GL_TEXTURE1_ARB,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_D_NV, GL_CONSTANT_COLOR1_NV,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerOutputNV( GL_COMBINER0_NV, GL_RGB, GL_DISCARD_NV, GL_DISCARD_NV, GL_SPARE0_NV,
GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE);
//Combiner 1 does: blue(tex0)+spare0.rgb->spare0.rgb
glCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_A_NV, GL_TEXTURE0_ARB,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_B_NV, GL_CONSTANT_COLOR0_NV,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_C_NV, GL_SPARE0_NV,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_D_NV, GL_ZERO,
GL_UNSIGNED_INVERT_NV, GL_RGB);
glCombinerOutputNV( GL_COMBINER1_NV, GL_RGB, GL_DISCARD_NV, GL_DISCARD_NV, GL_SPARE0_NV,
GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE);
glFinalCombinerInputNV(GL_VARIABLE_A_NV, GL_PRIMARY_COLOR_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_B_NV, GL_TEXTURE3_ARB, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_C_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_D_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
//Bind vertex program
glBindProgramNV(GL_VERTEX_PROGRAM_NV, chromaticSingleVP);
}
//Set the states for texture attenuation
void SetTextureAttenStates()
{
//Set up texture units
//Unit 0 - decal texture
glBindTexture(GL_TEXTURE_2D, decalTexture);
//Unit 1 - 2D attenuation
glActiveTextureARB(GL_TEXTURE1_ARB);
glBindTexture(GL_TEXTURE_2D, atten2DTexture);
//Unit 2 - 1D attenuation
glActiveTextureARB(GL_TEXTURE2_ARB);
glBindTexture(GL_TEXTURE_1D, atten1DTexture);
glActiveTextureARB(GL_TEXTURE0_ARB);
//Set up register combiners
//one general combiner
glCombinerParameteriNV(GL_NUM_GENERAL_COMBINERS_NV, 1);
//combiner 0 does tex1+tex2 -> spare0
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_A_NV, GL_TEXTURE1_ARB,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_B_NV, GL_ZERO,
GL_UNSIGNED_INVERT_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_C_NV, GL_TEXTURE2_ARB,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_D_NV, GL_ZERO,
GL_UNSIGNED_INVERT_NV, GL_RGB);
glCombinerOutputNV( GL_COMBINER0_NV, GL_RGB, GL_DISCARD_NV, GL_DISCARD_NV, GL_SPARE0_NV,
GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE);
//final combiner outputs (1-spare0)*tex0*col0
//first do tex0*col0 in the EF multiplier
glFinalCombinerInputNV(GL_VARIABLE_E_NV, GL_TEXTURE0_ARB, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_F_NV, GL_PRIMARY_COLOR_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
//now do rest
glFinalCombinerInputNV(GL_VARIABLE_A_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_B_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_C_NV, GL_E_TIMES_F_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_D_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
}
//Set the states for pass through atten
void SetPassThroughAttenStates()
{
//Set up texture units
//Unit 0 - decal texture
glBindTexture(GL_TEXTURE_2D, decalTexture);
//Set up texture shaders
//unit 0 - decal
glTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
//unit 1 - pass through atten coords
glActiveTextureARB(GL_TEXTURE1_ARB);
glTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_PASS_THROUGH_NV);
glActiveTextureARB(GL_TEXTURE0_ARB);
//Set up register combiners
//one general combiner
glCombinerParameteriNV(GL_NUM_GENERAL_COMBINERS_NV, 1);
//combiner 0 does tex1 dot tex1 -> spare0
//spare 0 thus holds the squared length of the vector in tex1
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_A_NV, GL_TEXTURE1_ARB,
GL_EXPAND_NORMAL_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_B_NV, GL_TEXTURE1_ARB,
GL_EXPAND_NORMAL_NV, GL_RGB);
glCombinerOutputNV( GL_COMBINER0_NV, GL_RGB, GL_SPARE0_NV, GL_DISCARD_NV, GL_DISCARD_NV,
GL_NONE, GL_NONE, GL_TRUE, GL_FALSE, GL_FALSE);
//Set up final combiner to output clampto01(1-spare0)*col0*tex0
//first do tex0*col0 in the EF multiplier
glFinalCombinerInputNV(GL_VARIABLE_E_NV, GL_TEXTURE0_ARB, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_F_NV, GL_PRIMARY_COLOR_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
//now do rest
glFinalCombinerInputNV(GL_VARIABLE_A_NV, GL_SPARE0_NV, GL_UNSIGNED_INVERT_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_B_NV, GL_E_TIMES_F_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_C_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_D_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_NVRegisterCombiners_nglCombinerInputNV(JNIEnv *env, jclass clazz, jint stage, jint portion, jint variable, jint input, jint mapping, jint componentUsage, jlong function_pointer) {
glCombinerInputNVPROC glCombinerInputNV = (glCombinerInputNVPROC)((intptr_t)function_pointer);
glCombinerInputNV(stage, portion, variable, input, mapping, componentUsage);
}
void SetSimpleSpecularStates(void)
{
//Bind textures
//Unit 0 - normal map
glEnable(GL_TEXTURE_2D);
if(showBumps)
glBindTexture(GL_TEXTURE_2D, normalMapTexture);
else
glBindTexture(GL_TEXTURE_2D, flatNormalMap);
//Unit 1 - normalisation cube map
glActiveTextureARB(GL_TEXTURE1_ARB);
glEnable(GL_TEXTURE_CUBE_MAP_ARB);
glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, normalisationCubeMap);
glActiveTextureARB(GL_TEXTURE0_ARB);
//Set up Register combiners
//2 general combiners
glCombinerParameteriNV(GL_NUM_GENERAL_COMBINERS_NV, 2);
//combiner 0 does tex0.rgb dot tex1.rgb -> spare0.rgb,
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_A_NV, GL_TEXTURE0_ARB,
GL_EXPAND_NORMAL_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_B_NV, GL_TEXTURE1_ARB,
GL_EXPAND_NORMAL_NV, GL_RGB);
glCombinerOutputNV( GL_COMBINER0_NV, GL_RGB, GL_SPARE0_NV, GL_DISCARD_NV, GL_DISCARD_NV,
GL_NONE, GL_NONE, GL_TRUE, GL_FALSE, GL_FALSE);
//combiner 1 does 2*((spare0.rgb * spare0.rgb)-0.5) -> spare0.rgb
// spare0.b * tex0.a -> spare0.a
glCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_A_NV, GL_SPARE0_NV,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_B_NV, GL_SPARE0_NV,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerOutputNV( GL_COMBINER1_NV, GL_RGB, GL_SPARE0_NV, GL_DISCARD_NV, GL_DISCARD_NV,
GL_SCALE_BY_TWO_NV, GL_BIAS_BY_NEGATIVE_ONE_HALF_NV,
GL_FALSE, GL_FALSE, GL_FALSE);
glCombinerInputNV( GL_COMBINER1_NV, GL_ALPHA, GL_VARIABLE_A_NV, GL_SPARE0_NV,
GL_UNSIGNED_IDENTITY_NV, GL_BLUE);
glCombinerInputNV( GL_COMBINER1_NV, GL_ALPHA, GL_VARIABLE_B_NV, GL_TEXTURE0_ARB,
GL_UNSIGNED_IDENTITY_NV, GL_ALPHA);
glCombinerOutputNV( GL_COMBINER1_NV, GL_ALPHA, GL_SPARE0_NV, GL_DISCARD_NV, GL_DISCARD_NV,
GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE);
//final combiner outputs spare0.rgb*spare0.rgb*spare0.a
//first do spare0.rgb * spare0.rgb in EF multiplier
glFinalCombinerInputNV(GL_VARIABLE_E_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_F_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_A_NV, GL_E_TIMES_F_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_B_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_ALPHA);
glFinalCombinerInputNV(GL_VARIABLE_C_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_D_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glEnable(GL_REGISTER_COMBINERS_NV);
//Set up vertex program
glEnable(GL_VERTEX_PROGRAM_NV);
glBindProgramNV(GL_VERTEX_PROGRAM_NV, simpleSpecularVertexProgram);
}
void SetSinglePassStates(void)
{
//Bind textures
//Unit 0 - normal map
glEnable(GL_TEXTURE_2D);
if(showBumps)
glBindTexture(GL_TEXTURE_2D, normalMapTexture);
else
glBindTexture(GL_TEXTURE_2D, flatNormalMap);
//Unit 1 - normalisation cube map
glActiveTextureARB(GL_TEXTURE1_ARB);
glEnable(GL_TEXTURE_CUBE_MAP_ARB);
glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, normalisationCubeMap);
//Unit 2 - normalisation cube map
glActiveTextureARB(GL_TEXTURE2_ARB);
glEnable(GL_TEXTURE_CUBE_MAP_ARB);
glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, normalisationCubeMap);
//Unit 3 - decal texture
glActiveTextureARB(GL_TEXTURE3_ARB);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, decalTexture);
glActiveTextureARB(GL_TEXTURE0_ARB);
//Set up Register combiners
//3 general combiners
glCombinerParameteriNV(GL_NUM_GENERAL_COMBINERS_NV, 4);
//combiner 0 does tex0.rgb dot tex1.rgb -> spare0.rgb,
// tex0.rgb dot tex2.rgb -> spare1.rgb
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_A_NV, GL_TEXTURE0_ARB,
GL_EXPAND_NORMAL_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_B_NV, GL_TEXTURE1_ARB,
GL_EXPAND_NORMAL_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_C_NV, GL_TEXTURE0_ARB,
GL_EXPAND_NORMAL_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_D_NV, GL_TEXTURE2_ARB,
GL_EXPAND_NORMAL_NV, GL_RGB);
glCombinerOutputNV( GL_COMBINER0_NV, GL_RGB, GL_SPARE0_NV, GL_SPARE1_NV, GL_DISCARD_NV,
GL_NONE, GL_NONE, GL_TRUE, GL_TRUE, GL_FALSE);
//combiner 1 does spare1.rgb * spare1.rgb -> spare1.rgb
// spare0.rgb * tex3.rgb -> spare0.rgb
glCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_A_NV, GL_SPARE1_NV,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_B_NV, GL_SPARE1_NV,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_C_NV, GL_SPARE0_NV,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_D_NV, GL_TEXTURE3_ARB,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerOutputNV( GL_COMBINER1_NV, GL_RGB, GL_SPARE1_NV, GL_SPARE0_NV, GL_DISCARD_NV,
GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE);
//combiner 2 does spare1.rgb * spare1.rgb -> spare1.rgb
glCombinerInputNV( GL_COMBINER2_NV, GL_RGB, GL_VARIABLE_A_NV, GL_SPARE1_NV,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER2_NV, GL_RGB, GL_VARIABLE_B_NV, GL_SPARE1_NV,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerOutputNV( GL_COMBINER2_NV, GL_RGB, GL_SPARE1_NV, GL_DISCARD_NV, GL_DISCARD_NV,
GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE);
//combiner 3 does spare1.rgb * spare1.rgb -> spare1.rgb
glCombinerInputNV( GL_COMBINER3_NV, GL_RGB, GL_VARIABLE_A_NV, GL_SPARE1_NV,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerInputNV( GL_COMBINER3_NV, GL_RGB, GL_VARIABLE_B_NV, GL_SPARE1_NV,
GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glCombinerOutputNV( GL_COMBINER3_NV, GL_RGB, GL_SPARE1_NV, GL_DISCARD_NV, GL_DISCARD_NV,
GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE);
//final combiner outputs spare1.rgb*spare1.rgb*tex0.a+spare0.rgb
//First do spare1.rgb*spare1.rgb in EF multiplier
glFinalCombinerInputNV(GL_VARIABLE_E_NV, GL_SPARE1_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_F_NV, GL_SPARE1_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
//Now do rest
glFinalCombinerInputNV(GL_VARIABLE_A_NV, GL_E_TIMES_F_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_B_NV, GL_TEXTURE0_ARB, GL_UNSIGNED_IDENTITY_NV, GL_ALPHA);
glFinalCombinerInputNV(GL_VARIABLE_C_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glFinalCombinerInputNV(GL_VARIABLE_D_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB);
glEnable(GL_REGISTER_COMBINERS_NV);
//Set up vertex program
glEnable(GL_VERTEX_PROGRAM_NV);
glBindProgramNV(GL_VERTEX_PROGRAM_NV, singlePassVertexProgram);
}