Test VAO

Author: einarf

demosys/test/testcase.py

@@ -15,6 +15,7 @@
 class DemosysTestCase(TestCase):
 
     window = context.window()
+    ctx = context.ctx()
 
     def create_shader(self, source=None, path=None):
         """

tests/resources/shaders/v_write_1.glsl

@@ -0,0 +1,11 @@
+#version 330
+
+#if defined VERTEX_SHADER
+
+in uint in_val;
+out uint out_val;
+
+void main() {
+    out_val = in_val + 1u;
+}
+#endif

tests/resources/shaders/vf_instanced.glsl

@@ -0,0 +1,18 @@
+#version 330
+
+#if defined VERTEX_SHADER
+in vec3 in_position;
+in vec3 in_instance;
+
+void main() {
+    gl_Position = vec4(in_position + in_instance, 1.0);
+}
+
+#elif defined FRAGMENT_SHADER
+
+out vec4 fragColor;
+
+void main() {
+    fragColor = vec4(1.0);
+}
+#endif

tests/test_docs.py

@@ -9,6 +9,7 @@
 import os
 import re
 import unittest
+from demosys.test import DemosysTestCase
 
 import demosys
 from demosys import effects, opengl

tests/test_vao.py

@@ -0,0 +1,42 @@
+from demosys.test import DemosysTestCase
+from demosys.opengl import VAO
+from demosys import geometry
+
+
+class VAOTest(DemosysTestCase):
+
+    def test_create(self):
+        shader = self.create_shader(path="vf_pos.glsl")
+        vao = VAO("test")
+        vao.buffer(
+            self.ctx.buffer(reserve=12),
+            '3f',
+            "in_position",
+        )
+        vao.draw(shader)
+
+    def test_transform(self):
+        shader = self.create_shader(path="v_write_1.glsl")
+        vao = VAO("transform")
+        vao.buffer(
+            self.ctx.buffer(reserve=12),
+            '1u',
+            'in_val',
+        )
+        result = self.ctx.buffer(reserve=12)
+        vao.transform(shader, result)
+        self.assertEqual(
+            result.read(),
+            b'\x01\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00',
+        )
+
+    def test_instanced(self):
+        shader = self.create_shader(path="vf_instanced.glsl")
+        vao = geometry.cube(1.0, 1.0, 1.0)
+        vao.buffer(
+            self.ctx.buffer(reserve=4 * 10),
+            '1f',
+            "in_instance",
+            per_instance=True,
+        )
+        vao.draw(shader, instances=10)