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shaders/mobile_nerf/raster.vert

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+/* Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 the "License";
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ------------------------------------------------------------------------
+ *
+ * THIS IS A MODIFIED VERSION OF THE ORIGINAL FILE
+ *
+ * The original file, along with the original Apache-2.0 LICENSE can be found at:
+ * https://github.com/google-research/jax3d/tree/main/jax3d/projects/mobilenerf
+ *
+ * Modification details: Shader code was updated to work on Vulkan (originally
+ * built for WebGL)
+ * Contributor: (Qualcomm) Rodrigo Holztrattner - quic_rholztra@quicinc.com
+ */
+#version 460
+
+layout(location = 0) in vec3 position;
+layout(location = 1) in vec2 texCoord;
+layout(location = 2) in vec3 posOffset;
+
+layout(binding = 2) uniform GlobalUniform
+{
+	mat4x4 model;
+	mat4x4 view;
+	mat4x4 proj;
+    vec3 camera_position;
+    vec3 camera_side;
+    vec3 camera_up;
+    vec3 camera_lookat;
+    vec2 img_dim;
+}
+global_uniform;
+
+layout(location = 0) out vec2 texCoord_frag;
+layout(location = 1) out vec3 rayDirection;
+
+void main(void)
+{
+	texCoord_frag = texCoord;
+
+	vec3 pos = position + posOffset;
+
+	gl_Position = global_uniform.proj * global_uniform.view * global_uniform.model * vec4(pos.x, -pos.y, pos.z, 1.0);
+	rayDirection = pos - vec3(global_uniform.camera_position.x, -global_uniform.camera_position.y, global_uniform.camera_position.z);
+}