136 lines
3.2 KiB
C
136 lines
3.2 KiB
C
#include <string.h>
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#include "context.h"
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void C3Di_LightMtlBlend(C3D_Light* light)
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{
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int i;
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C3D_Material* mtl = &light->parent->material;
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C3D_LightMatConf* conf = &light->conf.material;
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memset(conf, 0, sizeof(*conf));
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for (i = 0; i < 3; i ++)
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{
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conf->specular0 |= ((u32)(255*(mtl->specular0[i]*light->color[i]))) << (i*10);
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conf->specular1 |= ((u32)(255*(mtl->specular1[i]*light->color[i]))) << (i*10);
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conf->diffuse |= ((u32)(255*(mtl->diffuse[i] *light->color[i]))) << (i*10);
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conf->ambient |= ((u32)(255*(mtl->ambient[i] *light->color[i]))) << (i*10);
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}
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}
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int C3D_LightInit(C3D_Light* light, C3D_LightEnv* env)
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{
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int i;
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memset(light, 0, sizeof(*light));
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for (i = 0; i < 8; i ++)
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if (!env->lights[i])
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break;
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if (i == 8) return -1;
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env->lights[i] = light;
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light->flags = C3DF_Light_Enabled | C3DF_Light_Dirty | C3DF_Light_MatDirty;
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light->id = i;
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light->parent = env;
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light->conf.config = BIT(0);
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env->flags |= C3DF_LightEnv_LCDirty;
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return i;
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}
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void C3D_LightEnable(C3D_Light* light, bool enable)
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{
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if ((light->flags & C3DF_Light_Enabled) == (enable?C3DF_Light_Enabled:0))
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return;
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if (enable)
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light->flags |= C3DF_Light_Enabled;
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else
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light->flags &= ~C3DF_Light_Enabled;
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light->parent->flags |= C3DF_LightEnv_LCDirty;
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}
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void C3D_LightTwoSideDiffuse(C3D_Light* light, bool enable)
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{
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if (enable)
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light->conf.config |= BIT(1);
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else
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light->conf.config &= ~BIT(1);
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light->flags |= C3DF_Light_Dirty;
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}
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void C3D_LightGeoFactor(C3D_Light* light, int id, bool enable)
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{
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id = 2 + (id&1);
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if (enable)
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light->conf.config |= BIT(id);
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else
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light->conf.config &= ~BIT(id);
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light->flags |= C3DF_Light_Dirty;
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}
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void C3D_LightColor(C3D_Light* light, float r, float g, float b)
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{
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light->color[0] = b;
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light->color[1] = g;
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light->color[2] = r;
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light->flags |= C3DF_Light_MatDirty;
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}
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void C3D_LightPosition(C3D_Light* light, C3D_FVec* pos)
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{
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// Enable/disable positional light depending on W coordinate
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light->conf.config &= ~BIT(0);
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light->conf.config |= (pos->w != 0.0);
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light->conf.position[0] = f32tof16(pos->x);
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light->conf.position[1] = f32tof16(pos->y);
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light->conf.position[2] = f32tof16(pos->z);
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light->flags |= C3DF_Light_Dirty;
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}
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static void C3Di_EnableCommon(C3D_Light* light, bool enable, u32 bit)
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{
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C3D_LightEnv* env = light->parent;
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u32* var = &env->conf.config[1];
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if ((*var & bit) ^ bit)
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return;
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if (!enable)
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*var |= bit;
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else
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*var &= ~bit;
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env->flags |= C3DF_LightEnv_Dirty;
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}
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void C3D_LightShadowEnable(C3D_Light* light, bool enable)
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{
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C3Di_EnableCommon(light, enable, GPU_LC1_SHADOWBIT(light->id));
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}
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void C3D_LightSpotEnable(C3D_Light* light, bool enable)
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{
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C3Di_EnableCommon(light, enable, GPU_LC1_SPOTBIT(light->id));
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}
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void C3D_LightSpotDir(C3D_Light* light, float x, float y, float z)
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{
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C3Di_EnableCommon(light, true, GPU_LC1_SPOTBIT(light->id));
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// TODO
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light->flags |= C3DF_Light_Dirty;
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}
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void C3D_LightDistAttnEnable(C3D_Light* light, bool enable)
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{
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C3Di_EnableCommon(light, enable, GPU_LC1_ATTNBIT(light->id));
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}
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void C3D_LightDistAttn(C3D_Light* light, float bias, float scale)
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{
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C3Di_EnableCommon(light, true, GPU_LC1_ATTNBIT(light->id));
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light->conf.distAttnBias = f32tof20(bias);
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light->conf.distAttnScale = f32tof20(scale);
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light->flags |= C3DF_Light_Dirty;
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}
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