src/game/scenes/ingame.c

@@ -11,10 +11,11 @@ static void ingame_tick(struct state *state) {
     world_drawdef(scn->world);
     player_calc(scn->player);
 
-    push_sprite_ex((t_frect){ .x = 32, .y = 64, .w = 64, .h = 64 }, (t_push_sprite_args){
-        .path = "/assets/light.png",
-        .color = (t_color){255, 0, 0, 255},
-        .blend = true });
+    for (size_t i = 100000; --i;)
+        push_sprite_ex((t_frect){ .x = 32, .y = 64, .w = 64, .h = 64 }, (t_push_sprite_args){
+            .path = "/assets/light.png",
+            .color = (t_color){255, 0, 0, 255},
+            .blend = false });
 
     push_sprite_ex((t_frect){ .x = 48, .y = 64, .w = 64, .h = 64 }, (t_push_sprite_args){
         .path = "/assets/light.png",

src/rendering/sprites.h

@@ -101,17 +101,20 @@ void push_sprite_ex(t_frect rect, t_push_sprite_args args) {
 
 static struct sprite_batch {
     int atlas_id;
-    size_t size;    /* how many primitives are in current batch */
-    bool blend;     /* whether it's blended or not */
-    bool colored;   /* whether color inmformation is needed to be passed */
+    size_t size;             /* how many primitives are in current batch */
+    bool blend;              /* whether it's blended or not */
+    bool constant_colored;   /* whether colored batch is uniformly colored */
 } collect_sprite_batch(const struct primitive_2d *primitives, size_t len) {
     /* assumes that first primitive is already a sprite */
-    struct sprite_batch result = {
+    struct sprite_batch batch = {
         .atlas_id =
             textures_get_atlas_id(&ctx.texture_cache, primitives[0].sprite.texture_key),
         .blend = primitives[0].sprite.blend,
+        .constant_colored = true,
     };
 
+    const t_color uniform_color = primitives[0].sprite.color;
+
     /* batch size is clamped so that reallocated short indices could be used */
     if (len >= QUAD_ELEMENT_BUFFER_LENGTH)
         len = QUAD_ELEMENT_BUFFER_LENGTH;
@@ -124,25 +127,25 @@ static struct sprite_batch {
             break;
 
         /* only collect the same blend modes */
-        if (current->sprite.blend != result.blend)
+        if (current->sprite.blend != batch.blend)
             break;
 
         /* only collect the same texture atlases */
         if (textures_get_atlas_id(&ctx.texture_cache, current->sprite.texture_key)
-                != result.atlas_id)
+                != batch.atlas_id)
             break;
 
-        /* if all are effectively without modulation we can skip sending color data */
-        if (!result.colored && (current->sprite.color.r != 255 ||
-                                current->sprite.color.g != 255 ||
-                                current->sprite.color.b != 255 ||
-                                current->sprite.color.a != 255 ))
-            result.colored = true;
+        /* if all are modulated the same we can skip sending the color data */
+        if (batch.constant_colored && (current->sprite.color.r != uniform_color.r ||
+                                       current->sprite.color.g != uniform_color.g ||
+                                       current->sprite.color.b != uniform_color.b ||
+                                       current->sprite.color.a != uniform_color.a ))
+            batch.constant_colored = false;
 
-        ++result.size;
+        ++batch.size;
     }
 
-    return result;
+    return batch;
 }
 
 
@@ -165,7 +168,7 @@ static void render_sprites(const struct primitive_2d primitives[],
     }
 
     size_t payload_size;
-    if (batch.colored)
+    if (!batch.constant_colored)
         payload_size = sizeof (struct sprite_primitive_payload);
     else
         payload_size = sizeof (struct sprite_primitive_payload_without_color);
@@ -233,7 +236,7 @@ static void render_sprites(const struct primitive_2d primitives[],
                 CRY("Rotation", "Unimplemented");
             }
 
-            if (batch.colored)
+            if (!batch.constant_colored)
                 ((struct sprite_primitive_payload *)payload)[i] = (struct sprite_primitive_payload) {
                     .v0 = v0,
                     .v1 = v1,
@@ -272,7 +275,7 @@ static void render_sprites(const struct primitive_2d primitives[],
     GLsizei voff;
     GLsizei uvoff;
 
-    if (batch.colored) {
+    if (!batch.constant_colored) {
         off   = offsetof(struct sprite_primitive_payload, v1);
         voff  = offsetof(struct sprite_primitive_payload, v0);
         uvoff = offsetof(struct sprite_primitive_payload, uv0);
@@ -296,14 +299,17 @@ static void render_sprites(const struct primitive_2d primitives[],
                       off,
                       (void *)(size_t)uvoff);
 
-    if (batch.colored) {
+    if (!batch.constant_colored) {
         glEnableClientState(GL_COLOR_ARRAY);
         glColorPointer(4,
                        GL_UNSIGNED_BYTE,
                        off,
                        (void *)offsetof(struct sprite_primitive_payload, c0));
     } else
-        glColor4ub(255, 255, 255, 255);
+        glColor4ub(primitives[0].sprite.color.r,
+                   primitives[0].sprite.color.g,
+                   primitives[0].sprite.color.b,
+                   primitives[0].sprite.color.a);
 
     textures_bind(&ctx.texture_cache, primitives->sprite.texture_key, GL_TEXTURE_2D);