chg: set fixed rnd seed for captures

MAKE.bat

@@ -685,7 +685,7 @@ if "%1"=="addons[" (
     if "%1"=="hello"    set "hello=yes" && goto loop
     if "%1"=="editor"   set "editor=yes" && set "v4k=yes" && set "hello=no"&& goto loop
     if "%1"=="run"      set "run=yes" && goto loop
-    if "%1"=="all"      set "v4k=yes" && set "demos=yes" && set "lab=yes" && set "editor=yes" && set "hello=yes" && goto loop
+    if "%1"=="all"      set "v4k=yes" && set "demos=yes" && set "lab=yes" && set "hello=yes" && goto loop
 
     if "%1"=="tcc"      set "cc=%1" && goto loop
     if "%1"=="cl"       set "cc=%1" && goto loop

TEST.bat

@@ -1,12 +1,13 @@
 @echo off
 
-set WORKDIR=%~dp0
+cd /d "%~dp0\."
+
 call make cook
 
-mkdir %WORKDIR%\tests > nul 2> nul
-mkdir %WORKDIR%\tests\out > nul 2> nul
-mkdir %WORKDIR%\tests\ref > nul 2> nul
-mkdir %WORKDIR%\tests\diff > nul 2> nul
+mkdir tests > nul 2> nul
+mkdir tests\out > nul 2> nul
+mkdir tests\ref > nul 2> nul
+mkdir tests\diff > nul 2> nul
 
 where gm > nul 2> nul
 if errorlevel 1 (
@@ -16,16 +17,19 @@ if errorlevel 1 (
 )
 
 for %%x in (*.exe) do (
-    echo Running %%x...
+    @REM echo Running %%x...
     start /wait "" "%%x" --nocook --capture=50
 
-    if not exist %WORKDIR%\tests\ref\%%~nx.exe.png (
-        echo Reference image not found. Copying %%~nx.exe.png ...
-        copy %WORKDIR%\tests\out\%%~nx.exe.png %WORKDIR%\tests\ref\%%~nx.exe.png
+    if not exist "tests\ref\%%~nx.png" (
+        echo [pass] reference image not found. Copying %%~nx.png ...
+        copy "tests\out\%%~nx.png" "tests\ref\%%~nx.png"
     ) else (
-        call gm compare -metric MSE -maximum-error 0.02 %WORKDIR%\tests\ref\%%~nx.exe.png %WORKDIR%\tests\out\%%~nx.exe.png -file %WORKDIR%\tests\diff\%%~nx.exe.png > nul 2> nul
+        call gm compare -metric MSE -maximum-error 0.005 "tests\ref\%%~nx.png" "tests\out\%%~nx.png" -file "tests\diff\%%~nx.png"
         if errorlevel 1 (
-            echo Images differ too much. Check %WORKDIR%\tests\diff\%%~nx.exe.png
+            echo [fail] %%~nx.exe! Check "tests\diff\%%~nx.png"
+        ) else (
+            echo [pass] %%~nx.exe
+            del "tests\diff\%%~nx.png"
         )
     )
 )

demos/06-material.c

@@ -38,8 +38,8 @@ int main() {
     // load model
     model_t m1 = model("suzanne.obj", MODEL_NO_ANIMATIONS);
     model_t m2 = model("suzanne.obj", MODEL_NO_ANIMATIONS|MODEL_MATCAPS);
-    // model_t m3 = model("damagedhelmet.gltf", MODEL_NO_ANIMATIONS|MODEL_PBR);
-    model_t m3 = model("Scutum_low.fbx", MODEL_NO_ANIMATIONS|MODEL_PBR);
+    model_t m3 = model("damagedhelmet.gltf", MODEL_NO_ANIMATIONS|MODEL_PBR);
+    // model_t m3 = model("Scutum_low.fbx", MODEL_NO_ANIMATIONS|MODEL_PBR);
     model_t m4 = model("cube.obj", MODEL_NO_ANIMATIONS);
     // model_t m4 = model("avp/scene.gltf", MODEL_NO_ANIMATIONS|MODEL_PBR);
     // model_t m3 = model("Cerberus_LP.FBX", MODEL_NO_ANIMATIONS|MODEL_PBR); 
@@ -83,9 +83,10 @@ int main() {
     object_model(obj4, m3);
     object_scale(obj4, vec3(3,3,3));
     object_move(obj4, vec3(-10+6*3,0,-10));
-    object_pivot(obj4, vec3(0,0,90));
+    // object_pivot(obj4, vec3(0,0,90));
+    object_pivot(obj4, vec3(0,90,0));
 
-    // spawn object5 (pbr)
+    // spawn object5 (shadertoy)
     object_t* obj5 = scene_spawn();
     object_model(obj5, m4);
     object_diffuse(obj5, sh.tx);

engine/joint/v4k.h

@@ -392983,10 +392983,15 @@ int window_swap() {
     }
 
     static uint64_t capture_frame = 0;
-    if (cook_done && optioni("--capture", 0) && capture_frame++ == optioni("--capture", 0)) {
-        void *rgb = screenshot(3);
+    static uint64_t capture_target; do_once capture_target = optioni("--capture", 0);
+    if( cook_done && ++capture_frame == capture_target ) {
+        mkdir( "tests/out", 0777 );
+        const char *screenshot_file = va("tests/out/%s.png", app_name());
+
+        int n = 3;
+        void *rgb = screenshot(n);
         stbi_flip_vertically_on_write(true);
-        if(!stbi_write_png(va("tests/out/%s.png", argv(0)), w, h, 3, rgb, 3 * w) ) {
+        if(!stbi_write_png(screenshot_file, w, h, n, rgb, n * w) ) {
             PANIC("!could not write screenshot file `%s`\n", screenshot_file);
         }
         return 0;
@@ -395721,6 +395726,11 @@ static void v4k_post_init(float refresh_rate) {
 
     // preload brdf LUT early
     (void)brdf_lut();
+
+    static uint64_t capture_target; do_once capture_target = optioni("--capture", 0);
+    if (capture_target) {
+        randset(capture_target);
+    }
 }
 
 // ----------------------------------------------------------------------------

engine/split/v4k_main.c

@@ -51,6 +51,11 @@ static void v4k_post_init(float refresh_rate) {
 
     // preload brdf LUT early
     (void)brdf_lut();
+
+    static uint64_t capture_target; do_once capture_target = optioni("--capture", 0);
+    if (capture_target) {
+        randset(capture_target);
+    }
 }
 
 // ----------------------------------------------------------------------------

engine/split/v4k_window.c

@@ -660,10 +660,15 @@ int window_swap() {
     }
 
     static uint64_t capture_frame = 0;
-    if (cook_done && optioni("--capture", 0) && capture_frame++ == optioni("--capture", 0)) {
-        void *rgb = screenshot(3);
+    static uint64_t capture_target; do_once capture_target = optioni("--capture", 0);
+    if( cook_done && ++capture_frame == capture_target ) {
+        mkdir( "tests/out", 0777 );
+        const char *screenshot_file = va("tests/out/%s.png", app_name());
+
+        int n = 3;
+        void *rgb = screenshot(n);
         stbi_flip_vertically_on_write(true);
-        if(!stbi_write_png(va("tests/out/%s.png", argv(0)), w, h, 3, rgb, 3 * w) ) {
+        if(!stbi_write_png(screenshot_file, w, h, n, rgb, n * w) ) {
             PANIC("!could not write screenshot file `%s`\n", screenshot_file);
         }
         return 0;

engine/v4k.c

@@ -27523,10 +27523,15 @@ int window_swap() {
     }
 
     static uint64_t capture_frame = 0;
-    if (cook_done && optioni("--capture", 0) && capture_frame++ == optioni("--capture", 0)) {
-        void *rgb = screenshot(3);
+    static uint64_t capture_target; do_once capture_target = optioni("--capture", 0);
+    if( cook_done && ++capture_frame == capture_target ) {
+        mkdir( "tests/out", 0777 );
+        const char *screenshot_file = va("tests/out/%s.png", app_name());
+
+        int n = 3;
+        void *rgb = screenshot(n);
         stbi_flip_vertically_on_write(true);
-        if(!stbi_write_png(va("tests/out/%s.png", argv(0)), w, h, 3, rgb, 3 * w) ) {
+        if(!stbi_write_png(screenshot_file, w, h, n, rgb, n * w) ) {
             PANIC("!could not write screenshot file `%s`\n", screenshot_file);
         }
         return 0;
@@ -30261,6 +30266,11 @@ static void v4k_post_init(float refresh_rate) {
 
     // preload brdf LUT early
     (void)brdf_lut();
+
+    static uint64_t capture_target; do_once capture_target = optioni("--capture", 0);
+    if (capture_target) {
+        randset(capture_target);
+    }
 }
 
 // ----------------------------------------------------------------------------