Add mat3 instances parameters.

__init__.py

@@ -47,6 +47,11 @@ def _float_addr(x):
 class vec3(ctypes.Structure):
     _fields_ = ('x', ctypes.c_float), ('y', ctypes.c_float), ('z', ctypes.c_float)
 
+    def __iter__(self):
+        yield self.x
+        yield self.y
+        yield self.z
+
     def set(self, x, y, z):
         self.x = x
         self.y = y
@@ -55,6 +60,12 @@ class vec3(ctypes.Structure):
 class vec4(ctypes.Structure):
     _fields_ = ('x', ctypes.c_float), ('y', ctypes.c_float), ('z', ctypes.c_float), ('w', ctypes.c_float)
 
+    def __iter__(self):
+        yield self.x
+        yield self.y
+        yield self.z
+        yield self.w
+
     def set(self, x, y, z, w):
         self.x = x
         self.y = y
@@ -62,10 +73,59 @@ class vec4(ctypes.Structure):
         self.w = w
 
 class mat3(ctypes.Structure):
-    _fields_ = ('x', vec3), ('y', vec3), ('z', vec3)
+    _fields_ = ('right', vec3), ('forward', vec3), ('up', vec3)
+
+    def __iter__(self):
+        yield self.right
+        yield self.forward
+        yield self.up
+
+    def set(self, right, forward, up):
+        self.right = right
+        self.forward = forward
+        self.up = up
 
 class mat4(ctypes.Structure):
-    _fields_ = ('x', vec4), ('y', vec4), ('z', vec4), ('w', vec4)
+    _fields_ = ('right', vec4), ('forward', vec4), ('up', vec4), ('origin', vec4)
+
+    def __iter__(self):
+        yield self.right
+        yield self.forward
+        yield self.up
+        yield self.origin
+
+    def set(self, right, forward, up, origin):
+        self.right = right
+        self.forward = forward
+        self.up = up
+        self.origin = origin
+
+    def set_mat3_vec3(self, axes, origin):
+        self.right.set(*axes.right, 0.0)
+        self.forward.set(*axes.forward, 0.0)
+        self.up.set(*axes.up, 0.0)
+        self.origin.set(*origin, 1.0)
+
+    def set_axes(self, right, forward, up):
+        self.right = right
+        self.forward = forward
+        self.up = up
+
+    def set_axes_mat3(self, axes):
+        self.right.set(*axes.right, 0.0)
+        self.forward.set(*axes.forward, 0.0)
+        self.up.set(*axes.up, 0.0)
+
+    def set_origin(self, origin):
+        self.origin = origin
+
+    def set_origin_vec3(self, origin):
+        self.origin.set(*origin, 1.0)
+
+assert ctypes.sizeof(vec3) == ctypes.sizeof(ctypes.c_float) * 3
+assert ctypes.sizeof(vec4) == ctypes.sizeof(ctypes.c_float) * 4
+assert ctypes.sizeof(mat3) == ctypes.sizeof(vec3) * 3
+assert ctypes.sizeof(mat4) == ctypes.sizeof(vec4) * 4
 
 _vec3_p = ctypes.POINTER(vec3)
 _vec4_p = ctypes.POINTER(vec4)
@@ -75,6 +135,23 @@ _mat4_p = ctypes.POINTER(mat4)
 vec3_right   = vec3(1.0, 0.0, 0.0)
 vec3_forward = vec3(0.0, 1.0, 0.0)
 vec3_up      = vec3(0.0, 0.0, 1.0)
+vec3_origin  = vec3(0.0, 0.0, 0.0)
+
+vec4_right   = vec4(1.0, 0.0, 0.0, 0.0)
+vec4_forward = vec4(0.0, 1.0, 0.0, 0.0)
+vec4_up      = vec4(0.0, 0.0, 1.0, 0.0)
+vec4_origin  = vec4(0.0, 0.0, 0.0, 1.0)
+
+mat3_identity = mat3(
+    vec3_right,
+    vec3_forward,
+    vec3_up)
+
+mat4_identity = mat4(
+    vec4_right,
+    vec4_forward,
+    vec4_up,
+    vec4_origin)
 
 vec3_rotate = _engine.rk_vec3_rotate
 vec3_rotate.argtypes = (
@@ -185,6 +262,8 @@ def vertex_format(*format):
 PARAM_FORMAT_VEC3_FLOAT = 1
 PARAM_FORMAT_VEC3_SHORT = 2
 PARAM_FORMAT_VEC3_INT10 = 3
+PARAM_FORMAT_MAT3_FLOAT = 4
+PARAM_FORMAT_MAT3_INT10 = 5
 PARAM_FORMAT_NORMALIZE = _flag(7)
 
 def params_format(*format):

cpp/render.hpp

@@ -55,7 +55,9 @@ enum : rk_ubyte { RK_VERTEX_FORMAT_MASK = RK_VERTEX_FORMAT_NORMALIZE - 1 };
 enum rk_param_format : rk_ubyte {
     RK_PARAM_FORMAT_VEC3_FLOAT = 1,
     RK_PARAM_FORMAT_VEC3_SHORT = 2,
-    RK_PARAM_FORMAT_VEC3_INT10 = 3
+    RK_PARAM_FORMAT_VEC3_INT10 = 3,
+    RK_PARAM_FORMAT_MAT3_FLOAT = 4,
+    RK_PARAM_FORMAT_MAT3_INT10 = 5
 };
 
 enum : rk_ubyte { RK_PARAM_FORMAT_NORMALIZE = RK_FLAG(7) };

cpp/render/render_opengles.cpp

@@ -290,18 +290,18 @@ rk_vertices_t rk_create_vertices(
     unsigned offset = 0;
     for (rk_vertex_format const * f = format; *f; ++f, ++vertices->layout) {
         glEnableVertexAttribArray(vertices->layout);
-        GLboolean const normalize = (*f & RK_VERTEX_FORMAT_NORMALIZE) != 0;
+        GLboolean const norm = (*f & RK_VERTEX_FORMAT_NORMALIZE) != 0;
         switch (*f & RK_VERTEX_FORMAT_MASK) {
             case RK_VERTEX_FORMAT_VEC3_FLOAT:
-                glVertexAttribFormat(vertices->layout, 3, GL_FLOAT, normalize, offset);
+                glVertexAttribFormat(vertices->layout, 3, GL_FLOAT, norm, offset);
                 offset += sizeof(rk_vec3);
                 break;
             case RK_VERTEX_FORMAT_VEC3_INT10:
-                glVertexAttribFormat(vertices->layout, 4, GL_INT_2_10_10_10_REV, normalize, offset);
+                glVertexAttribFormat(vertices->layout, 4, GL_INT_2_10_10_10_REV, norm, offset);
                 offset += sizeof(rk_int);
                 break;
             case RK_VERTEX_FORMAT_VEC3_UINT10:
-                glVertexAttribFormat(vertices->layout, 4, GL_UNSIGNED_INT_2_10_10_10_REV, normalize, offset);
+                glVertexAttribFormat(vertices->layout, 4, GL_UNSIGNED_INT_2_10_10_10_REV, norm, offset);
                 offset += sizeof(rk_uint);
                 break;
         }
@@ -315,35 +315,77 @@ rk_vertices_t rk_create_vertices(
     return vertices;
 }
 
-static void rk_pack_vec3(
+static void rk_pack_vec3_float(
-    rk_pack_dst dst,
+    rk_pack_dst const dst,
-    rk_pack_src src) {
+    rk_pack_src const src) {
-    *dst.vec3_ptr = *src.vec3_ptr;
+    *dst.vec3_float = *src.vec3_float;
 }
 
-static void rk_pack_vec3s(
+static void rk_pack_vec3_short(
-    rk_pack_dst dst,
+    rk_pack_dst const dst,
-    rk_pack_src src) {
+    rk_pack_src const src) {
-    dst.vec3s_ptr->x = static_cast<rk_short>(src.vec3_ptr->x);
+    dst.vec3_short->x = static_cast<rk_short>(src.vec3_float->x);
-    dst.vec3s_ptr->y = static_cast<rk_short>(src.vec3_ptr->y);
+    dst.vec3_short->y = static_cast<rk_short>(src.vec3_float->y);
-    dst.vec3s_ptr->z = static_cast<rk_short>(src.vec3_ptr->z);
+    dst.vec3_short->z = static_cast<rk_short>(src.vec3_float->z);
 }
 
-static void rk_pack_vec3s_norm(
+static void rk_pack_vec3_short_norm(
-    rk_pack_dst dst,
+    rk_pack_dst const dst,
-    rk_pack_src src) {
+    rk_pack_src const src) {
     #define _convert(s) (static_cast<rk_short>((s) * ((s) < 0.f ? 32768.f : 32767.f)))
-    dst.vec3s_ptr->x = _convert(src.vec3_ptr->x);
+    dst.vec3_short->x = _convert(src.vec3_float->x);
-    dst.vec3s_ptr->y = _convert(src.vec3_ptr->y);
+    dst.vec3_short->y = _convert(src.vec3_float->y);
-    dst.vec3s_ptr->z = _convert(src.vec3_ptr->z);
+    dst.vec3_short->z = _convert(src.vec3_float->z);
     #undef _convert
 }
 
 static void rk_pack_vec3_int10(
-    rk_pack_dst dst,
+    rk_pack_dst const dst,
-    rk_pack_src src) {
+    rk_pack_src const src) {
+    #define _convert(s) (static_cast<rk_int>((s)) & 1023)
+    *dst.vec3_int10 =
+        _convert(src.vec3_float->x) | (_convert(src.vec3_float->y) << 10) | (_convert(src.vec3_float->z) << 20);
+    #undef _convert
+}
+
+static void rk_pack_vec3_int10_norm(
+    rk_pack_dst const dst,
+    rk_pack_src const src) {
     #define _convert(s) (static_cast<rk_int>((s) * ((s) < 0.f ? 512.f : 511.f)) & 1023)
-    *dst.int_ptr = _convert(src.vec3_ptr->x) | (_convert(src.vec3_ptr->y) << 10) | (_convert(src.vec3_ptr->z) << 20);
+    *dst.vec3_int10 =
+        _convert(src.vec3_float->x) | (_convert(src.vec3_float->y) << 10) | (_convert(src.vec3_float->z) << 20);
+    #undef _convert
+}
+
+static void rk_pack_mat3_float(
+    rk_pack_dst const dst,
+    rk_pack_src const src) {
+    *dst.mat3_float = *src.mat3_float;
+}
+
+static void rk_pack_mat3_int10(
+    rk_pack_dst const dst,
+    rk_pack_src const src) {
+    #define _convert(s) (static_cast<rk_int>((s)) & 1023)
+    dst.mat3_int10->x =
+        _convert(src.mat3_float->x.x) | (_convert(src.mat3_float->x.y) << 10) | (_convert(src.mat3_float->x.z) << 20);
+    dst.mat3_int10->y =
+        _convert(src.mat3_float->y.x) | (_convert(src.mat3_float->y.y) << 10) | (_convert(src.mat3_float->y.z) << 20);
+    dst.mat3_int10->z =
+        _convert(src.mat3_float->z.x) | (_convert(src.mat3_float->z.y) << 10) | (_convert(src.mat3_float->z.z) << 20);
+    #undef _convert
+}
+
+static void rk_pack_mat3_int10_norm(
+    rk_pack_dst const dst,
+    rk_pack_src const src) {
+    #define _convert(s) (static_cast<rk_int>((s) * ((s) < 0.f ? 512.f : 511.f)) & 1023)
+    dst.mat3_int10->x =
+        _convert(src.mat3_float->x.x) | (_convert(src.mat3_float->x.y) << 10) | (_convert(src.mat3_float->x.z) << 20);
+    dst.mat3_int10->y =
+        _convert(src.mat3_float->y.x) | (_convert(src.mat3_float->y.y) << 10) | (_convert(src.mat3_float->y.z) << 20);
+    dst.mat3_int10->z =
+        _convert(src.mat3_float->z.x) | (_convert(src.mat3_float->z.y) << 10) | (_convert(src.mat3_float->z.z) << 20);
     #undef _convert
 }
 
@@ -363,16 +405,24 @@ rk_batch_t rk_create_batch(
     for (rk_param_format const * f = params_format; *f; ++f, ++nparams) {
         switch (*f & RK_PARAM_FORMAT_MASK) {
             case RK_PARAM_FORMAT_VEC3_FLOAT:
-                params_size += sizeof(rk_vec3);
+                params_size += sizeof(rk_vec3_float);
-                packed_size += sizeof(rk_vec3);
+                packed_size += sizeof(rk_vec3_float);
                 break;
             case RK_PARAM_FORMAT_VEC3_SHORT:
-                params_size += sizeof(rk_vec3);
+                params_size += sizeof(rk_vec3_float);
-                packed_size += sizeof(rk_vec3s);
+                packed_size += sizeof(rk_vec3_short);
                 break;
             case RK_PARAM_FORMAT_VEC3_INT10:
-                params_size += sizeof(rk_vec3);
+                params_size += sizeof(rk_vec3_float);
-                packed_size += sizeof(rk_int);
+                packed_size += sizeof(rk_vec3_int10);
+                break;
+            case RK_PARAM_FORMAT_MAT3_FLOAT:
+                params_size += sizeof(rk_mat3_float);
+                packed_size += sizeof(rk_mat3_float);
+                break;
+            case RK_PARAM_FORMAT_MAT3_INT10:
+                params_size += sizeof(rk_mat3_float);
+                packed_size += sizeof(rk_mat3_int10);
                 break;
             default:
                 rk_printf("rk_create_batch(): invalid param format.");
@@ -391,39 +441,65 @@ rk_batch_t rk_create_batch(
         batch->packers = new rk_packer[nparams];
         batch->params = new rk_ubyte[max_size * packed_size];
         glGenBuffers(1, &batch->params_buffer);
-        unsigned layout = vertices->layout;
         rk_packer * packer = batch->packers;
+        unsigned layout = vertices->layout;
         unsigned offset = 0;
         glBindVertexArray(vertices->array);
-        for (rk_param_format const * f = params_format; *f; ++f, ++layout, ++packer) {
+        for (rk_param_format const * f = params_format; *f; ++f, ++packer) {
-            GLboolean const normalize = (*f & RK_PARAM_FORMAT_NORMALIZE) != 0;
+            GLboolean const norm = (*f & RK_PARAM_FORMAT_NORMALIZE) != 0;
-            glEnableVertexAttribArray(layout);
             switch (*f & RK_PARAM_FORMAT_MASK) {
                 case RK_PARAM_FORMAT_VEC3_FLOAT:
-                    glVertexAttribFormat(layout, 3, GL_FLOAT, normalize, offset);
+                    glVertexAttribFormat(layout++, 3, GL_FLOAT, GL_FALSE, offset);
-                    packer->pack = rk_pack_vec3;
+                    packer->pack = rk_pack_vec3_float;
-                    packer->dst_incr = sizeof(rk_vec3);
+                    packer->src_incr = sizeof(rk_vec3_float);
-                    packer->src_incr = sizeof(rk_vec3);
+                    packer->dst_incr = sizeof(rk_vec3_float);
                     break;
                 case RK_PARAM_FORMAT_VEC3_SHORT:
-                    glVertexAttribFormat(layout, 3, GL_SHORT, normalize, offset);
+                    glVertexAttribFormat(layout++, 3, GL_SHORT, norm, offset);
-                    if (normalize) {
+                    if (norm) {
-                        packer->pack = rk_pack_vec3s_norm;
+                        packer->pack = rk_pack_vec3_short_norm;
                     } else {
-                        packer->pack = rk_pack_vec3s;
+                        packer->pack = rk_pack_vec3_short;
                     }
-                    packer->dst_incr = sizeof(rk_vec3s);
+                    packer->src_incr = sizeof(rk_vec3_float);
-                    packer->src_incr = sizeof(rk_vec3);
+                    packer->dst_incr = sizeof(rk_vec3_short);
                     break;
                 case RK_PARAM_FORMAT_VEC3_INT10:
-                    glVertexAttribFormat(layout, 4, GL_INT_2_10_10_10_REV, normalize, offset);
+                    glVertexAttribFormat(layout++, 4, GL_INT_2_10_10_10_REV, norm, offset);
-                    packer->pack = rk_pack_vec3_int10;
+                    if (norm) {
-                    packer->dst_incr = sizeof(rk_int);
+                        packer->pack = rk_pack_vec3_int10_norm;
-                    packer->src_incr = sizeof(rk_vec3);
+                    } else {
+                        packer->pack = rk_pack_vec3_int10;
+                    }
+                    packer->src_incr = sizeof(rk_vec3_float);
+                    packer->dst_incr = sizeof(rk_vec3_int10);
+                    break;
+                case RK_PARAM_FORMAT_MAT3_FLOAT:
+                    glVertexAttribFormat(layout++, 3, GL_FLOAT, GL_FALSE, offset + offsetof(rk_mat3_float, x));
+                    glVertexAttribFormat(layout++, 3, GL_FLOAT, GL_FALSE, offset + offsetof(rk_mat3_float, y));
+                    glVertexAttribFormat(layout++, 3, GL_FLOAT, GL_FALSE, offset + offsetof(rk_mat3_float, z));
+                    packer->pack = rk_pack_mat3_float;
+                    packer->src_incr = sizeof(rk_mat3_float);
+                    packer->dst_incr = sizeof(rk_mat3_float);
+                    break;
+                case RK_PARAM_FORMAT_MAT3_INT10:
+                    glVertexAttribFormat(layout++, 4, GL_INT_2_10_10_10_REV, norm, offset + offsetof(rk_mat3_int10, x));
+                    glVertexAttribFormat(layout++, 4, GL_INT_2_10_10_10_REV, norm, offset + offsetof(rk_mat3_int10, y));
+                    glVertexAttribFormat(layout++, 4, GL_INT_2_10_10_10_REV, norm, offset + offsetof(rk_mat3_int10, z));
+                    if (norm) {
+                        packer->pack = rk_pack_mat3_int10_norm;
+                    } else {
+                        packer->pack = rk_pack_mat3_int10;
+                    }
+                    packer->src_incr = sizeof(rk_mat3_float);
+                    packer->dst_incr = sizeof(rk_mat3_int10);
                     break;
             }
             offset += packer->dst_incr;
-            glVertexAttribBinding(layout, RK_PARAMS_BINDING);
+        }
+        for (unsigned attrib = vertices->layout; attrib < layout; ++attrib) {
+            glEnableVertexAttribArray(attrib);
+            glVertexAttribBinding(attrib, RK_PARAMS_BINDING);
         }
         glVertexBindingDivisor(RK_PARAMS_BINDING, 1);
         glBindVertexBuffer(RK_PARAMS_BINDING, batch->params_buffer, 0, batch->packed_size);
@@ -580,8 +656,8 @@ static void rk_batch_pack(
         rk_pack_src src(&params[batch.params_size * (*index)]);
         for (rk_packer const * packer = batch.packers; packer < last_packer; ++packer) {
             packer->pack(dst, src);
-            dst.ptr += packer->dst_incr;
             src.ptr += packer->src_incr;
+            dst.ptr += packer->dst_incr;
         }
     }
 }

cpp/render/render_opengles.hpp

@@ -51,16 +51,37 @@ struct rk_vertices {
     GLuint indices;
 };
 
-struct rk_vec3s {
+struct rk_vec3_float {
+    float x;
+    float y;
+    float z;
+};
+
+struct rk_vec3_short {
     rk_short x;
     rk_short y;
     rk_short z;
     rk_short pad;
 };
 
+typedef rk_int rk_vec3_int10;
+
+struct rk_mat3_float {
+    rk_vec3_float x;
+    rk_vec3_float y;
+    rk_vec3_float z;
+};
+
+struct rk_mat3_int10 {
+    rk_vec3_int10 x;
+    rk_vec3_int10 y;
+    rk_vec3_int10 z;
+};
+
 union rk_pack_src {
     rk_ubyte const * __restrict ptr;
-    rk_vec3 const * __restrict vec3_ptr;
+    rk_vec3_float const * __restrict vec3_float;
+    rk_mat3_float const * __restrict mat3_float;
 
     inline rk_pack_src() {}
     inline rk_pack_src(rk_ubyte const * const __restrict src) : ptr(src) {}
@@ -68,20 +89,22 @@ union rk_pack_src {
 
 union rk_pack_dst {
     rk_ubyte * __restrict ptr;
-    rk_vec3 * __restrict vec3_ptr;
+    rk_vec3_float * __restrict vec3_float;
-    rk_vec3s * __restrict vec3s_ptr;
+    rk_vec3_short * __restrict vec3_short;
-    rk_int * __restrict int_ptr;
+    rk_vec3_int10 * __restrict vec3_int10;
+    rk_mat3_float * __restrict mat3_float;
+    rk_mat3_int10 * __restrict mat3_int10;
 
     inline rk_pack_dst() {}
     inline rk_pack_dst(rk_ubyte * const __restrict dst) : ptr(dst) {}
 };
 
-typedef void (*rk_packer_fn)(rk_pack_dst, rk_pack_src);
+typedef void (*rk_packer_fn)(rk_pack_dst const, rk_pack_src const);
 
 struct rk_packer {
     rk_packer_fn pack;
-    unsigned dst_incr;
     unsigned src_incr;
+    unsigned dst_incr;
 };
 
 struct rk_command {