source: downloads/RenderSystems/GL/src/nvparse/rc1.0_final.cpp @ 6

#include "rc1.0_final.h"
#include "nvparse_errors.h"
#include "nvparse_externs.h"

#include <OgreGLPrerequisites.h>

void FinalRgbFunctionStruct::ZeroOut()
{
        RegisterEnum zero;
        zero.word = RCP_ZERO;
        a.Init(zero, GL_UNSIGNED_IDENTITY_NV);
        b.Init(zero, GL_UNSIGNED_IDENTITY_NV);
        c.Init(zero, GL_UNSIGNED_IDENTITY_NV);
        d.Init(zero, GL_UNSIGNED_IDENTITY_NV);
}

void FinalAlphaFunctionStruct::ZeroOut()
{
        RegisterEnum zero;
        zero.word = RCP_ZERO;
        g.Init(zero, GL_UNSIGNED_IDENTITY_NV);
}

void FinalProductStruct::ZeroOut()
{
        RegisterEnum zero;
        zero.word = RCP_ZERO;
        e.Init(zero, GL_UNSIGNED_IDENTITY_NV);
        f.Init(zero, GL_UNSIGNED_IDENTITY_NV);
}
void FinalCombinerStruct::Validate()
{
        if (hasProduct &&
                (GL_E_TIMES_F_NV == product.e.reg.bits.name ||
                 GL_SPARE0_PLUS_SECONDARY_COLOR_NV == product.e.reg.bits.name ||
                 GL_DISCARD_NV == product.e.reg.bits.name ||
                 GL_E_TIMES_F_NV == product.f.reg.bits.name ||
                 GL_SPARE0_PLUS_SECONDARY_COLOR_NV == product.f.reg.bits.name ||
                 GL_DISCARD_NV == product.f.reg.bits.name))
                errors.set("invalid input register for final_product");

        if (hasProduct &&
                (RCP_BLUE == product.e.reg.bits.channel ||
                 RCP_BLUE == product.f.reg.bits.channel))
                errors.set("blue register used in final_product");

        if (GL_E_TIMES_F_NV == alpha.g.reg.bits.name ||
                GL_SPARE0_PLUS_SECONDARY_COLOR_NV == alpha.g.reg.bits.name ||
                GL_DISCARD_NV == alpha.g.reg.bits.name)
                errors.set("invalid input register for final alpha");

        if (RCP_RGB == alpha.g.reg.bits.channel)
                errors.set("rgb register used in final alpha");

        if (GL_SPARE0_PLUS_SECONDARY_COLOR_NV == rgb.a.reg.bits.name &&
                GL_SPARE0_PLUS_SECONDARY_COLOR_NV != rgb.b.reg.bits.name &&
                GL_ZERO == rgb.c.reg.bits.name && GL_UNSIGNED_IDENTITY_NV == rgb.c.map)
        {
                MappedRegisterStruct temp;
                temp = rgb.a;
                rgb.a = rgb.b;
                rgb.b = temp;
        }

        if (GL_SPARE0_PLUS_SECONDARY_COLOR_NV == rgb.a.reg.bits.name &&
                GL_ZERO == rgb.b.reg.bits.name && GL_UNSIGNED_INVERT_NV == rgb.b.map &&
                GL_ZERO == rgb.c.reg.bits.name && GL_UNSIGNED_IDENTITY_NV == rgb.c.map &&
                GL_SPARE0_PLUS_SECONDARY_COLOR_NV != rgb.d.reg.bits.name)
        {
                MappedRegisterStruct temp;
                temp = rgb.a;
                rgb.a = rgb.d;
                rgb.d = temp;
        }

        if (GL_SPARE0_PLUS_SECONDARY_COLOR_NV == rgb.a.reg.bits.name ||
                GL_DISCARD_NV == rgb.a.reg.bits.name ||
                GL_DISCARD_NV == rgb.b.reg.bits.name ||
                GL_DISCARD_NV == rgb.c.reg.bits.name ||
                GL_DISCARD_NV == rgb.d.reg.bits.name)
                errors.set("invalid input register for final rgb");

        if (RCP_BLUE == rgb.a.reg.bits.channel ||
                RCP_BLUE == rgb.b.reg.bits.channel ||
                RCP_BLUE == rgb.c.reg.bits.channel ||
                RCP_BLUE == rgb.d.reg.bits.channel)
                errors.set("blue register used in final rgb");

        if ((GL_E_TIMES_F_NV == rgb.a.reg.bits.name ||
                GL_E_TIMES_F_NV == rgb.b.reg.bits.name ||
                GL_E_TIMES_F_NV == rgb.c.reg.bits.name ||
                GL_E_TIMES_F_NV == rgb.d.reg.bits.name) && !hasProduct)
                errors.set("final_product used but not set");

        if (RCP_NONE == rgb.a.reg.bits.channel)
                rgb.a.reg.bits.channel = RCP_RGB;
        if (RCP_NONE == rgb.b.reg.bits.channel)
                rgb.b.reg.bits.channel = RCP_RGB;
        if (RCP_NONE == rgb.c.reg.bits.channel)
                rgb.c.reg.bits.channel = RCP_RGB;
        if (RCP_NONE == rgb.d.reg.bits.channel)
                rgb.d.reg.bits.channel = RCP_RGB;
        if (RCP_NONE == product.e.reg.bits.channel)
                product.e.reg.bits.channel = RCP_RGB;
        if (RCP_NONE == product.f.reg.bits.channel)
                product.f.reg.bits.channel = RCP_RGB;
        if (RCP_NONE == alpha.g.reg.bits.channel)
                alpha.g.reg.bits.channel = RCP_ALPHA;
}

void FinalCombinerStruct::Invoke()
{
        if(clamp)
                glCombinerParameteriNV(GL_COLOR_SUM_CLAMP_NV, GL_TRUE);
        else
                glCombinerParameteriNV(GL_COLOR_SUM_CLAMP_NV, GL_FALSE);

        glFinalCombinerInputNV(
                GL_VARIABLE_A_NV,
                rgb.a.reg.bits.name,
                rgb.a.map,
                MAP_CHANNEL(rgb.a.reg.bits.channel));

        glFinalCombinerInputNV(
                GL_VARIABLE_B_NV,
                rgb.b.reg.bits.name,
                rgb.b.map,
                MAP_CHANNEL(rgb.b.reg.bits.channel));

        glFinalCombinerInputNV(
                GL_VARIABLE_C_NV,
                rgb.c.reg.bits.name,
                rgb.c.map,
                MAP_CHANNEL(rgb.c.reg.bits.channel));

        glFinalCombinerInputNV(
                GL_VARIABLE_D_NV,
                rgb.d.reg.bits.name,
                rgb.d.map,
                MAP_CHANNEL(rgb.d.reg.bits.channel));

        glFinalCombinerInputNV(
                GL_VARIABLE_E_NV,
                product.e.reg.bits.name,
                product.e.map,
                MAP_CHANNEL(product.e.reg.bits.channel));

        glFinalCombinerInputNV(
                GL_VARIABLE_F_NV,
                product.f.reg.bits.name,
                product.f.map,
                MAP_CHANNEL(product.f.reg.bits.channel));

        glFinalCombinerInputNV(
                GL_VARIABLE_G_NV,
                alpha.g.reg.bits.name,
                alpha.g.map,
                MAP_CHANNEL(alpha.g.reg.bits.channel));
}