--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TaskManager/Test/simple_render/task/create_span.cpp	Wed Feb 27 10:56:09 2008 +0900
@@ -0,0 +1,211 @@
+#include <iostream>
+#include <string.h>
+#include "polygon_pack.h"
+#include "spu_span.h"
+#include "error.h"
+using namespace std;
+
+
+static float calc(float f1, float f2,int i, float base){
+    float ans;
+    ans = f1/f2*i + base;
+    return ans;
+}
+
+
+static VertexPack
+*vMid1(VertexPack *vMid1, VertexPack *vMin, VertexPack *vMid, VertexPack *vMax)
+{
+    float d,d1;
+
+    d  = (int)vMax->y-(int)vMin->y;
+    d1 = (int)vMid->y - (int)vMin->y;
+    vMid1->tex_x  = calc(vMax->tex_x - vMin->tex_x, d, (int)d1 , vMin->tex_x);
+    vMid1->tex_y  = calc(vMax->tex_y - vMin->tex_y, d, (int)d1 , vMin->tex_y);
+    vMid1->x      = calc(vMax->x - vMin->x, d, (int)d1 , vMin->x);
+    vMid1->y      = vMid->y;
+    vMid1->z      = calc(vMax->z - vMin->z, d, (int)d1 , vMin->z);
+    //printf("x:%f y:%f z:%f tex_x:%f tex_y:%f\n",vMid1->x,vMid1->y,vMid1->z,vMid1->tex_x, vMid1->tex_y);
+
+    return vMid1;
+}
+
+void
+half_triangle(SPUSPANLIST *ssl, long *tex_addr, long tex_width,long tex_height,
+	      VertexPack *vMin, VertexPack *vMid, VertexPack *vMid1)
+{
+    float tmp_z,tmp_tex1, tmp_tex2 ,tmp_tey1,tmp_tey2;
+    float tmp_xpos,tmp_end,tmp_zpos;
+    int i;
+    float div_y;
+    float start_z,end_z;
+    float start_tex_x,end_tex_x,start_tex_y,end_tex_y;
+    int x,y,length;
+    int k =0;
+    int l = 1;
+    int start_y = (int)vMid->y;
+    int end_y   = (int)vMin->y; 
+        
+    if (start_y<end_y) { 
+	int i; i=end_y; end_y=start_y; start_y = i;
+	k = 1;
+	l = -1;
+    }
+
+    div_y = start_y - end_y;  // > 0
+
+    for (i = k; i < div_y+1; i++) {
+	tmp_xpos = calc(vMid1->x - vMin->x ,div_y, i, vMin->x);
+	tmp_end =  calc(vMid->x  - vMin->x ,div_y, i, vMin->x); 
+	tmp_z =    calc(vMid1->z - vMin->z ,div_y, i, vMin->z);
+	tmp_zpos = calc(vMid->z  - vMin->z ,div_y, i, vMin->z);
+
+	tmp_tex1 =((i/(div_y)) * vMid1->tex_x) + \
+	    ( ((div_y - i)/(div_y)) * vMin->tex_x); 
+	tmp_tex2 =( (i/(div_y)) * vMid->tex_x) + \
+	    ( ((div_y - i)/(div_y)) * vMin->tex_x); 
+
+	tmp_tey1 =( (i/(div_y)) * vMid1->tex_y) + \
+	    ( ((div_y - i)/(div_y)) * vMin->tex_y); 
+	tmp_tey2 =( (i/(div_y)) * vMid->tex_y) + \
+	    ( ((div_y - i)/(div_y)) * vMin->tex_y); 
+	if(tmp_xpos > tmp_end) {
+	    x = (int)tmp_end;
+	    y = (int)vMin->y + i*l;
+	    length = (int)(tmp_xpos)-(int)(tmp_end)+1;
+	    start_z = tmp_zpos;
+	    end_z = tmp_z;
+	    start_tex_x = tmp_tex2;
+	    end_tex_x = tmp_tex1;
+	    start_tex_y = tmp_tey2;
+	    end_tex_y = tmp_tey1;
+	} else {
+	    x = (int)tmp_xpos;
+	    y = (int)vMin->y + i*l;
+	    length = (int)(tmp_end)-(int)(tmp_xpos)+1;
+	    start_z = tmp_z;
+	    end_z = tmp_zpos;
+	    start_tex_x = tmp_tex1;
+	    end_tex_x = tmp_tex2;
+	    start_tex_y = tmp_tey1;
+	    end_tex_y = tmp_tey2;
+	}
+	//printf("x:%d y:%d end:%d z:%f zpos:%f\n",x,y,length,start_z , end_z);
+	//printf("start_tex_x:%f end_tex_x:%f start_tex_y:%f end_tex_y:%fn",start_tex_x,end_tex_x,start_tex_y,end_tex_y);
+
+	//add(tex_addr,tex_width,tex_height,x,y,length,start_z,end_z,start_tex_x,end_tex_x,start_tex_y,end_tex_y);
+
+	//y += 540;   // window_height = 1080  (1080/2 = 540)
+	y += 240;   // window_height = 480  (480/2 = 240)
+
+	int line_set = y/8;
+
+	//y -= 540;   // window_height = 1080  (1080/2 = 540)
+	y -= 240;   // window_height = 480  (480/2 = 240)
+
+	int spu_no  = line_set%6;
+   	int spp_no  = line_set/6;
+	int span_no = ssl->ss[spu_no].spp[spp_no].info.size;
+
+#if 0	
+	ssl->ss[spu_no].spp[spp_no].span[span_no].tex_addr = tex_addr;
+	ssl->ss[spu_no].spp[spp_no].span[span_no].tex_width = tex_width;
+	ssl->ss[spu_no].spp[spp_no].span[span_no].tex_height = tex_height;
+	ssl->ss[spu_no].spp[spp_no].span[span_no].x = x;
+	ssl->ss[spu_no].spp[spp_no].span[span_no].y = y;
+	ssl->ss[spu_no].spp[spp_no].span[span_no].length_x = length;
+	ssl->ss[spu_no].spp[spp_no].span[span_no].start_z = start_z;
+	ssl->ss[spu_no].spp[spp_no].span[span_no].end_z = end_z;
+	ssl->ss[spu_no].spp[spp_no].span[span_no].tex_x1 = start_tex_x;
+	ssl->ss[spu_no].spp[spp_no].span[span_no].tex_x2 = end_tex_x;
+	ssl->ss[spu_no].spp[spp_no].span[span_no].tex_y1 = start_tex_y;
+	ssl->ss[spu_no].spp[spp_no].span[span_no].tex_y2 = end_tex_y;
+#else
+	SPNA_PTR span = &ssl->ss[spu_no].spp[spp_no].span[span_no];
+
+	span->tex_addr = tex_addr;
+	span->tex_width = tex_width;
+	span->tex_height = tex_height;
+	span->x = x;
+	span->y = y;
+	span->length_x = length;
+	span->start_z = start_z;
+	span->end_z = end_z;
+	span->tex_x1 = start_tex_x;
+	span->tex_x2 = end_tex_x;
+	span->tex_y1 = start_tex_y;
+	span->tex_y2 = end_tex_y;
+
+#endif
+
+	ssl->ss[spu_no].spp[spp_no].info.size++;
+    }
+}
+
+
+int
+create_span(void *rbuf, void *wbuf)
+{
+    PolygonPack *polygon = (PolygonPack*)rbuf;
+    //SPUSPANLIST *ssl = polygon->ssl;
+    SPUSPANLIST *ssl = (SPUSPANLIST*)wbuf;
+    VertexPack *vMin, *vMid, *vMax, *vMid10;
+    VertexPack ver;
+    vMid10 = &ver;
+
+    __debug("[%s]\n", __FUNCTION__);
+
+    for(int i = 0; i < 6; i++)  // 6 = number of SPU
+    {
+	ssl->ss[i].length = 0;
+	for(int t = 0; t < 10; t++)    // window_height = 480  (480/8/6 = 10)
+	{
+	    // wbuf は 16KB 、ssl(SPUSPANLIST) は 200KB 超えてるので
+	    // 16KB以上の場所にアクセスすると、ここでエラーがでます
+	    ssl->ss[i].spp[t].info.size = 0;
+	}
+    }
+
+    for (int a = 0; a < polygon->info.size; a++) {
+	if (polygon->tri[a].ver1.y <= polygon->tri[a].ver2.y) {
+	    if (polygon->tri[a].ver2.y <= polygon->tri[a].ver3.y) {
+		vMin = &polygon->tri[a].ver1;
+		vMid = &polygon->tri[a].ver2;
+		vMax = &polygon->tri[a].ver3;
+	    } else if (polygon->tri[a].ver3.y <= polygon->tri[a].ver1.y) {
+		vMin = &polygon->tri[a].ver3;
+		vMid = &polygon->tri[a].ver1;
+		vMax = &polygon->tri[a].ver2;
+	    } else {
+		vMin = &polygon->tri[a].ver1;
+		vMid = &polygon->tri[a].ver3;
+		vMax = &polygon->tri[a].ver2;
+	    }
+	} else {
+	    if (polygon->tri[a].ver1.y <= polygon->tri[a].ver3.y) {
+		vMin = &polygon->tri[a].ver2;
+		vMid = &polygon->tri[a].ver1;
+		vMax = &polygon->tri[a].ver3;
+	    } else if (polygon->tri[a].ver3.y <= polygon->tri[a].ver2.y) {
+		vMin = &polygon->tri[a].ver3;
+		vMid = &polygon->tri[a].ver2;
+		vMax = &polygon->tri[a].ver1;
+	    } else {
+		vMin = &polygon->tri[a].ver2;
+		vMid = &polygon->tri[a].ver3;
+		vMax = &polygon->tri[a].ver1;
+	    }
+	}
+	
+	vMid1(vMid10,vMin,vMid,vMax);
+	
+	half_triangle(ssl, polygon->tri[a].tex_addr, polygon->tri[a].tex_width,
+		      polygon->tri[a].tex_height, vMin, vMid, vMid10);
+	half_triangle(ssl, polygon->tri[0].tex_addr, polygon->tri[0].tex_width,
+		      polygon->tri[0].tex_height, vMax, vMid, vMid10);
+	
+	return 0;
+	
+	//return sizeof(SPUSPANLIST);
+    }
+}