init

shaders/sparse_image/glsl/sparse.frag

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+/* Copyright (c) 2023-2024, Mobica Limited
+ *
+ * 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.
+ */
+ 
+#version 450
+#extension GL_ARB_sparse_texture2 : enable
+
+layout(binding = 1) uniform sampler2D texSampler;
+
+layout(binding = 2) uniform settingsData {
+	bool color_highlight;
+	int  minLOD;
+	int  maxLOD;
+} settings;
+
+layout(location = 0) in vec2 fragTexCoord;
+layout(location = 0) out vec4 fragOutColor;
+
+vec3 color_blend_table[5] = 
+{
+	{1.00, 1.00, 1.00},
+	{0.80, 0.60, 0.40},
+	{0.60, 0.80, 0.60},
+	{0.40, 0.60, 0.80},
+	{0.20, 0.20, 0.20},
+};
+
+void main() {
+
+	vec4 color = vec4(0.0);
+
+	int lod = settings.minLOD;
+	int residencyCode = sparseTextureLodARB(texSampler, fragTexCoord, lod, color);
+
+	for(++lod; (lod <= settings.maxLOD) && !sparseTexelsResidentARB(residencyCode); ++lod)
+	{
+		residencyCode = sparseTextureLodARB(texSampler, fragTexCoord, lod, color);
+	}	
+
+	if (settings.color_highlight)
+	{
+		lod -= 1;
+		color.xyz = (color.xyz * color_blend_table[lod]);
+	}
+
+	fragOutColor = color;
+}

shaders/sparse_image/glsl/sparse.vert

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+/* Copyright (c) 2023-2024, Mobica Limited
+ *
+ * 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.
+ */
+ 
+ #version 450
+
+layout(binding = 0) uniform mvpTransform {
+    mat4 model;
+    mat4 view;
+    mat4 proj;
+} mvp;
+
+layout(location = 0) in vec2 inPosition;
+layout(location = 1) in vec2 inTexCoord;
+
+layout(location = 0) out vec2 fragTexCoord;
+
+
+void main() {
+    gl_Position = mvp.proj * mvp.view * mvp.model * vec4(inPosition, 0.0, 1.0);
+    fragTexCoord = inTexCoord;
+}

shaders/sparse_image/hlsl/sparse.frag.hlsl

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+/* Copyright (c) 2023-2024, Mobica Limited
+ *
+ * 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.
+ */
+
+Texture2D textureColor : register(t1);
+SamplerState samplerColor : register(s1);
+ 
+struct VSOutput
+{
+    float4 Pos : SV_POSITION;
+    [[vk::location(0)]] float2 UV : TEXCOORD0;
+};
+
+struct SettingsData
+{
+    bool color_highlight;
+    int minLOD;
+    int maxLOD;
+};
+[[vk::binding(2, 0)]]
+ConstantBuffer<SettingsData> settings : register(b2);
+
+static float3 color_blend_table[5] = 
+{
+	{1.00, 1.00, 1.00},
+	{0.80, 0.60, 0.40},
+	{0.60, 0.80, 0.60},
+	{0.40, 0.60, 0.80},
+	{0.20, 0.20, 0.20},
+};
+
+float4 main(VSOutput input) : SV_TARGET0
+{
+	float4 color = float4(0.0, 0.0, 0.0, 1.0);
+
+	int lod = settings.minLOD;
+    uint residencyCode;
+	
+    do
+    {
+        color = textureColor.SampleLevel(samplerColor, input.UV, lod, 0, residencyCode);
+        lod += 1.0f;
+    } while (!CheckAccessFullyMapped(residencyCode));
+	
+	if (settings.color_highlight)
+	{
+		lod -= 1;
+		color.xyz = (color.xyz * color_blend_table[lod]);
+	}
+
+	return color;
+}

shaders/sparse_image/hlsl/sparse.vert.hlsl

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+/* Copyright (c) 2023-2024, Mobica Limited
+ *
+ * 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.
+ */
+
+struct VSInput
+{
+    [[vk::location(0)]] float3 Pos : POSITION0;
+    [[vk::location(1)]] float2 UV : TEXCOORD0;
+};
+
+struct MvpTransform
+{
+    float4x4 model;
+    float4x4 view;
+    float4x4 proj;
+};
+[[vk::binding(0, 0)]]
+ConstantBuffer<MvpTransform> mvp : register(b0);
+
+struct VSOutput
+{
+    float4 Pos : SV_POSITION;
+    [[vk::location(0)]] float2 UV : TEXCOORD0;
+};
+
+VSOutput main(VSInput input)
+{
+    VSOutput output = (VSOutput) 0;
+    output.UV = input.UV;
+    output.Pos = mul(mvp.proj, mul(mvp.view, mul(mvp.model, float4(input.Pos.xyz, 1.0))));
+    return output;
+}