feat: allow passing rgba color to entity skeletons and block wraps

res/shaders/entity.glslv

@@ -2,7 +2,7 @@
 
 layout (location = 0) in vec3 v_position;
 layout (location = 1) in vec2 v_texCoord;
-layout (location = 2) in vec3 v_color;
+layout (location = 2) in vec4 v_color;
 layout (location = 3) in vec4 v_light;
 layout (location = 4) in vec4 v_normal;
 
@@ -29,8 +29,8 @@ void main() {
 
     a_dir = a_modelpos.xyz - u_cameraPos;
     vec3 skyLightColor = pick_sky_color(u_skybox, u_dayTime, u_minSkyLight);
-    a_color.rgb = max(a_color.rgb, skyLightColor.rgb * v_light.a) * v_color;
-    a_color.a = u_opacity;
+    a_color.rgb = max(a_color.rgb, skyLightColor.rgb * v_light.a) * v_color.rgb;
+    a_color.a = u_opacity * v_color.a;
 
     mat4 viewmodel = u_view * u_model;
     a_distance = length(viewmodel * vec4(pos3d, 0.0));

src/animation/rigging.hpp

@@ -85,7 +85,7 @@ namespace rigging {
         std::unordered_map<std::string, std::string> textures;
         std::vector<ModelReference> modelOverrides;
         bool visible;
-        glm::vec3 tint {1.0f, 1.0f, 1.0f};
+        glm::vec4 tint {1.0f, 1.0f, 1.0f, 1.0f};
 
         util::VecInterpolation<3, float> interpolation {false};
 

src/graphics/render/BlockWrapsRenderer.cpp

@@ -161,7 +161,7 @@ void BlockWrapsRenderer::draw(const DrawContext& pctx) {
 u64id_t BlockWrapsRenderer::add(
     const glm::ivec3& position,
     const std::string& texture,
-    const glm::vec3& tint,
+    const glm::vec4& tint,
     float emission
 ) {
     u64id_t id = nextWrapper++;

src/graphics/render/BlockWrapsRenderer.hpp

@@ -20,7 +20,7 @@ class DrawContext;
 struct BlockWrapper {
     glm::ivec3 position;
     std::array<std::string, 6> textureFaces {};
-    std::array<glm::vec3, 6> tints {};
+    std::array<glm::vec4, 6> tints {};
     float emission = 0.0f;
 
     // --- render cache ---
@@ -56,7 +56,7 @@ public:
     u64id_t add(
         const glm::ivec3& position,
         const std::string& texture,
-        const glm::vec3& tint,
+        const glm::vec4& tint,
         float emission
     );
 

src/graphics/render/MainBatch.cpp

@@ -87,7 +87,7 @@ void MainBatch::cube(
     const glm::vec3& size,
     const UVRegion(&texfaces)[6],
     const glm::vec4& lights,
-    const glm::vec3 tints[],
+    const glm::vec4 tints[],
     float emission,
     uint8_t cullingBits
 ) {

src/graphics/render/MainBatch.hpp

@@ -17,14 +17,14 @@ class Chunks;
 struct MainBatchVertex {
     glm::vec3 position;
     glm::vec2 uv;
-    glm::vec3 tint;
+    glm::vec4 tint;
     std::array<uint8_t, 4> color;
     std::array<uint8_t, 4> normal;
 
     static constexpr VertexAttribute ATTRIBUTES[] = {
         {VertexAttribute::Type::FLOAT, false, 3},
         {VertexAttribute::Type::FLOAT, false, 2},
-        {VertexAttribute::Type::FLOAT, false, 3},
+        {VertexAttribute::Type::FLOAT, false, 4},
         {VertexAttribute::Type::UNSIGNED_BYTE, true, 4},
         {VertexAttribute::Type::UNSIGNED_BYTE, true, 4},
         {{}, 0}};
@@ -63,7 +63,7 @@ public:
         const glm::vec3& pos,
         const glm::vec2& uv,
         const glm::vec4& light,
-        const glm::vec3& tint,
+        const glm::vec4& tint,
         const glm::vec3& normal,
         float emission
     ) {
@@ -91,7 +91,7 @@ public:
         const glm::vec3& normal,
         const glm::vec2& size,
         const glm::vec4& light,
-        const glm::vec3& tint,
+        const glm::vec4& tint,
         const UVRegion& subregion,
         float emission = 0.0f
     ) {
@@ -152,7 +152,7 @@ public:
         const glm::vec3& size,
         const UVRegion(&texfaces)[6],
         const glm::vec4& lights,
-        const glm::vec3 tints[],
+        const glm::vec4 tints[],
         float emission,
         uint8_t cullingBits = 0xFF
     );

src/graphics/render/ModelBatch.cpp

@@ -61,8 +61,8 @@ void ModelBatch::draw(
     const model::Mesh& mesh,
     const glm::mat4& matrix,
     const glm::mat3& rotation,
-    glm::vec3 tint,
-    const texture_names_map* varTextures,
+    const glm::vec4& tint,
+    const TextureNamesMap* varTextures,
     bool backlight
 ) {
     setTexture(mesh.texture, varTextures);
@@ -97,10 +97,12 @@ void ModelBatch::draw(
     }
 }
 
-void ModelBatch::draw(glm::mat4 matrix,
-                      glm::vec3 tint,
-                      const model::Model* model,
-                      const texture_names_map* varTextures) {
+void ModelBatch::draw(
+    const glm::mat4& matrix,
+    const glm::vec4& tint,
+    const model::Model* model,
+    const TextureNamesMap* varTextures
+) {
     for (const auto& mesh : model->meshes) {
         entries.push_back({
             matrix, extract_rotation(matrix), tint, &mesh, varTextures
@@ -134,7 +136,7 @@ void ModelBatch::setLightsOffset(const glm::vec3& offset) {
 }
 
 void ModelBatch::setTexture(const std::string& name,
-                            const texture_names_map* varTextures) {
+                            const TextureNamesMap* varTextures) {
     if (varTextures && !name.empty() && name.at(0) == '$') {
         const auto& found = varTextures->find(name);
         if (found == varTextures->end()) {

src/graphics/render/ModelBatch.hpp

@@ -18,7 +18,7 @@ namespace model {
     struct Model;
 }
 
-using texture_names_map = std::unordered_map<std::string, std::string>;
+using TextureNamesMap = std::unordered_map<std::string, std::string>;
 
 class ModelBatch {
     const Assets& assets;
@@ -31,22 +31,24 @@ class ModelBatch {
 
     std::unique_ptr<MainBatch> batch;
 
-    void draw(const model::Mesh& mesh, 
-              const glm::mat4& matrix, 
-              const glm::mat3& rotation, 
-              glm::vec3 tint,
-              const texture_names_map* varTextures,
-              bool backlight);
+    void draw(
+        const model::Mesh& mesh,
+        const glm::mat4& matrix,
+        const glm::mat3& rotation,
+        const glm::vec4& tint,
+        const TextureNamesMap* varTextures,
+        bool backlight
+    );
 
     void setTexture(const std::string& name,
-                    const texture_names_map* varTextures);
+                    const TextureNamesMap* varTextures);
 
     struct DrawEntry {
         glm::mat4 matrix;
         glm::mat3 rotation;
-        glm::vec3 tint;
+        glm::vec4 tint;
         const model::Mesh* mesh;
-        const texture_names_map* varTextures;
+        const TextureNamesMap* varTextures;
     };
     std::vector<DrawEntry> entries;
 public:
@@ -58,10 +60,12 @@ public:
     );
     ~ModelBatch();
 
-    void draw(glm::mat4 matrix,
-              glm::vec3 tint,
-              const model::Model* model,
-              const texture_names_map* varTextures);
+    void draw(
+        const glm::mat4& matrix,
+        const glm::vec4& tint,
+        const model::Model* model,
+        const TextureNamesMap* varTextures
+    );
     void render();
 
     void setLightsOffset(const glm::vec3& offset);

src/graphics/render/ParticlesRenderer.cpp

@@ -160,7 +160,7 @@ void ParticlesRenderer::renderParticle(
         -camera.front,
         preset.size * scale,
         light,
-        glm::vec3(1.0f),
+        glm::vec4(1.0f),
         particle.region,
         preset.lighting ? 0.0f : 1.0f
     );

src/graphics/render/PrecipitationRenderer.cpp

@@ -151,7 +151,7 @@ void PrecipitationRenderer::render(
                     glm::cross(glm::vec3(0, 1, 0), face.right),
                     FACE_SIZE,
                     light_at(chunks, pos.x, y, pos.z),
-                    glm::vec3(1.0f),
+                    glm::vec4(1.0f),
                     calc_uv(pos, face.right, timer, weather)
                 );
             }

src/logic/scripting/lua/libs/lib__skeleton.cpp

@@ -156,7 +156,9 @@ static int l_get_color(lua::State* L) {
 
 static int l_set_color(lua::State* L) {
     if (auto skeleton = get_skeleton(L)) {
-        skeleton->tint = lua::tovec3(L, 2);
+        skeleton->tint = lua::objlen(L, 2) > 3
+                             ? lua::tovec4(L, 2)
+                             : glm::vec4(lua::tovec3(L, 2), 1.0f);
     }
     return 0;
 }

src/logic/scripting/lua/libs/libblockwraps.cpp

@@ -10,7 +10,11 @@ static int l_wrap(lua::State* L) {
     auto position = lua::tovec3(L, 1);
     std::string texture = lua::require_string(L, 2);
     float emission = lua::isnumber(L, 3) ? lua::tonumber(L, 3) : 1.0f;
-    glm::vec3 tint = lua::istable(L, 4) ? lua::tovec3(L, 4) : glm::vec3(1.0f);
+    glm::vec4 tint =
+        lua::istable(L, 4)
+            ? (lua::objlen(L, 4) > 3 ? lua::tovec4(L, 4)
+                                     : glm::vec4(lua::tovec3(L, 4), 1.0f))
+            : glm::vec4(1.0f);
 
     return lua::pushinteger(
         L,
@@ -72,9 +76,12 @@ static int l_set_tints(lua::State* L) {
     if (auto wrapper = renderer->blockWraps->get(lua::tointeger(L, 1))) {
         for (int i = 0; i < wrapper->textureFaces.size(); i++) {
             if (lua::isnil(L, 2 + i)) {
-                wrapper->tints[i] = glm::vec3(1.0f);
+                wrapper->tints[i] = glm::vec4(1.0f);
             } else {
-                wrapper->tints[i] = lua::tovec3(L, 2 + i);
+                wrapper->tints[i] =
+                    lua::objlen(L, 2 + i) > 3
+                        ? lua::tovec4(L, 2 + i)
+                        : glm::vec4(lua::tovec3(L, 2 + i), 1.0f);
             }
         }
     }