dmlib: tests/efu.c comparison

comparison tests/efu.c @ 1445:60337b31e427

Cosmetics.

author	Matti Hamalainen <ccr@tnsp.org>
date	Thu, 10 May 2018 04:44:08 +0300
parents	5be4e2eec84f
children

comparison

equal deleted inserted replaced

-:5be4e2eec84f
+:60337b31e427
 break;
 case 2:
 dmVerbosity++;
 break;
 case 3:
 optVFlags |= SDL_FULLSCREEN;
 break;
 case 6:
 return FALSE;
 }
 optScrWidth = w;
 optScrHeight = h;
 }
 else
 {
 dmErrorMsg("Invalid size argument '%s'.\n", optArg);
 return FALSE;
 }
 }
 default:
 dmErrorMsg("Unknown option '%s'.\n", currArg);
 return FALSE;
 }
 return TRUE;
 }
 void DM_MakePalette(SDL_Surface *scr)
 void DM_Random(SDL_Surface *screen, int q)
 {
 Uint8 *pix = screen->pixels;
 int xc, yc;
 for (yc = 0; yc < screen->h; yc++)
 {
 Uint8 *dp = pix;
 for (xc = 0; xc < screen->w; xc++)
 int i, j;
 light->z = 150;
 for (j = 0; j < QHEIGHT; j++)
 for (i = 0; i < QWIDTH; i++)
 {
 DMVector vr, vl, va;
 DMFloat vrayLen, vfactor;
 int vlen;
 BOOL wasHit;
 // Perform shadow occlusion via simplistic raytracing
 vr.x = i;
 vr.y = j;
 vr.z = 200; //light->z; // - 10.0;
 // Calculate light vector vector
 dm_vector_sub_r(&vl, &vr, light);
 vrayLen = dm_vector_length(&vl);
 #if 1
 dm_vector_copy(&va, &vl);
 dm_vector_normalize(&va);
 dm_vector_copy(&vr, light);
 vlen = 0;
 wasHit = FALSE;
 do
+{
+float h;
+// If ray is inside the heightmap, get value
+if (vr.x >= 0 && vr.y >= 0 && vr.x < QWIDTH && vr.y < QHEIGHT)
+h = pheightMap[(int) vr.y][(int) vr.x];
+else
+break;
+// Check for hits
+if (h > vr.z)
+wasHit = TRUE;
+else
 {
-float h;
+// Move forwards
+dm_vector_add(&vr, &va);
-// If ray is inside the heightmap, get value
+vlen++;
-if (vr.x >= 0 && vr.y >= 0 && vr.x < QWIDTH && vr.y < QHEIGHT)
-h = pheightMap[(int) vr.y][(int) vr.x];
-else
-break;
-// Check for hits
-if (h > vr.z)
-wasHit = TRUE;
-else
-{
-// Move forwards
-dm_vector_add(&vr, &va);
-vlen++;
-}
 }
-while (!wasHit && vlen <= vrayLen);
+}
+while (!wasHit && vlen <= vrayLen);
-// Check if the ray hit something, e.g. is this point occluded?
-if (wasHit && vlen < vrayLen)
+// Check if the ray hit something, e.g. is this point occluded?
-{
+if (wasHit && vlen < vrayLen)
-vfactor = vlen * 0.05;
+{
-}
+vfactor = vlen * 0.05;
-else
+}
-vfactor = vlen * 0.001;
+else
+vfactor = vlen * 0.001;
 #endif
 #if 0
 {
 /* Calculate light's intensity based on the angle it "hits"
 *
 * 1) Calculate the vectors that form the imaginary "plane"
 * 2) Cross-product -> normal vector of the plane
 * 2) Normalize the normal vector
 * 3) Calculate light vector's hit angle by dot product
 */
 DMVector v1, v2;
 DMFloat c;
 v1.x = 2.0f;
 v1.y = 0.0f;
 v1.z = (DMFloat) (pheightMap[j][i] - pheightMap[j][i + 1]);
 v2.x = 0.0f;
 v2.y = 2.0f;
 v2.z = (DMFloat) (pheightMap[j][i] - pheightMap[j + 1][i]);
 dm_vector_cross(&vr, &v1, &v2);
 dm_vector_normalize(&vr);
 dm_vector_normalize(&vl);
 c = dm_vector_dot(&vl, &vr);
-		vrayLen = 255 - (vrayLen * 0.1) * vrayLen + (c * 128.0f) + (vfactor * vfactor * 1255);
+vrayLen = 255 - (vrayLen * 0.1) * vrayLen + (c * 128.0f) + (vfactor * vfactor * 1255);
 }
 #else
 vrayLen = 255 - vrayLen * vrayLen * (vfactor * vfactor);
 if (vrayLen < 0) vrayLen = 0;
 vrayLen -= pheightMap[j][i];
 #endif
 // Clip result
 if (vrayLen < 0)
 vrayLen = 0;
 else if (vrayLen > 255.0f)
 vrayLen = 255.0f;
 lightMap[j][i] = vrayLen;
 }
 }
 #define Q_KERNEL(x, y, dist, coeff) ( \
 in[(y) - (dist)][(x)] * (coeff) + \
 in[(y) + (dist)][(x)] * (coeff) + \
 SDL_Color fontcol={255,155,155,0};
 SDL_Event event;
 int mouseX, mouseY, res;
 BOOL initSDL = FALSE, initTTF = FALSE, exitFlag, showMap = FALSE;
 DMResource *file;
 if (!dmArgsProcess(argc, argv, optList, optListN,
 argHandleOpt, NULL, OPTH_BAILOUT))
 exit(1);
 if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) != 0)
 if (screen == NULL)
 {
 dmErrorMsg("Could not create screen surface.\n");
 goto error_exit;
 }
 dmMsg(0, "Benchmark mode, not opening window.\n");
 }
 else
 {
 if (!DM_InitializeVideo(&screen))
 dmPerlinInit(&perlinCtx, 1234);
 bmap = SDL_CreateRGBSurface(SDL_SWSURFACE, QWIDTH, QHEIGHT, 8, 0, 0, 0, 0);
 DM_MakePalette(bmap);
 DM_Random(bmap, 15);
 DMVector light;
 DMBlockMap heightMap;
 light.x = light.y = 128;
 light.z = 128;
 dmMakeBumpMap(heightMap, 0.06, 254);
 {
 case SDL_KEYDOWN:
 switch (event.key.keysym.sym)
 {
 case SDLK_ESCAPE: exitFlag = TRUE; break;
 case SDLK_F1:
 DM_Random(bmap, (SDL_GetTicks() / 10) % 1000);
 break;
 case SDLK_F5:
 showMap = !showMap;
 break;
 default:
 break;
 }
 break;
 case SDL_VIDEORESIZE:
 optScrWidth = event.resize.w;
 optScrHeight = event.resize.h;
 if (!DM_InitializeVideo(&screen))
 goto error_exit;
 break;
 case SDL_VIDEOEXPOSE:
 break;
 case SDL_QUIT:
 exit(0);
 if (showMap)
 memcpy(bmap->pixels, heightMap, QWIDTH * QHEIGHT);
 else
 dmShadowTraceHeightMap(bmap->pixels, logo->pixels, &light);
 dmScaledBlitSurfaceAny(bmap, 0, 0, screen->w, screen->h, screen, DMD_NONE);
 if (!optBenchmark)
 {
 dmDrawTTFText(screen, font, fontcol, 0, 0, "%3.1f FPS",
 (float) (numFrames * 1000.0f) / (float) (endTime - startTime));
 if (SDL_MUSTLOCK(screen) != 0)
 SDL_UnlockSurface(screen);

Mercurial > hg > dmlib

comparison tests/efu.c @ 1445:60337b31e427