diff --git a/data/shaders/instancing/instancing.frag b/data/shaders/instancing/instancing.frag
index 32047558..a0f78d72 100644
--- a/data/shaders/instancing/instancing.frag
+++ b/data/shaders/instancing/instancing.frag
@@ -20,7 +20,7 @@ void main()
vec3 L = normalize(inLightVec);
vec3 V = normalize(inViewVec);
vec3 R = reflect(-L, N);
- vec3 diffuse = max(dot(N, L), 0.0) * inColor;
+ vec3 diffuse = max(dot(N, L), 0.1) * inColor;
vec3 specular = (dot(N,L) > 0.0) ? pow(max(dot(R, V), 0.0), 16.0) * vec3(0.75) * color.r : vec3(0.0);
outFragColor = vec4(diffuse * color.rgb + specular, 1.0);
}
\ No newline at end of file
diff --git a/data/shaders/instancing/instancing.frag.spv b/data/shaders/instancing/instancing.frag.spv
index e56f071a..7857daf8 100644
Binary files a/data/shaders/instancing/instancing.frag.spv and b/data/shaders/instancing/instancing.frag.spv differ
diff --git a/data/shaders/instancing/starsphere.frag b/data/shaders/instancing/starsphere.frag
new file mode 100644
index 00000000..87c53d82
--- /dev/null
+++ b/data/shaders/instancing/starsphere.frag
@@ -0,0 +1,34 @@
+#version 450
+
+layout (location = 0) in vec3 inUVW;
+
+layout (location = 0) out vec4 outFragColor;
+
+#define HASHSCALE3 vec3(443.897, 441.423, 437.195)
+#define STARFREQUENCY 0.01
+
+// Hash function by Dave Hoskins (https://www.shadertoy.com/view/4djSRW)
+float hash33(vec3 p3)
+{
+ p3 = fract(p3 * HASHSCALE3);
+ p3 += dot(p3, p3.yxz+vec3(19.19));
+ return fract((p3.x + p3.y)*p3.z + (p3.x+p3.z)*p3.y + (p3.y+p3.z)*p3.x);
+}
+
+vec3 starField(vec3 pos)
+{
+ vec3 color = vec3(0.0);
+ float threshhold = (1.0 - STARFREQUENCY);
+ float rnd = hash33(pos);
+ if (rnd >= threshhold)
+ {
+ float starCol = pow((rnd - threshhold) / (1.0 - threshhold), 16.0);
+ color += vec3(starCol);
+ }
+ return color;
+}
+
+void main()
+{
+ outFragColor = vec4(starField(inUVW), 1.0);
+}
\ No newline at end of file
diff --git a/data/shaders/instancing/starsphere.frag.spv b/data/shaders/instancing/starsphere.frag.spv
new file mode 100644
index 00000000..b03c95c8
Binary files /dev/null and b/data/shaders/instancing/starsphere.frag.spv differ
diff --git a/data/shaders/instancing/starsphere.vert b/data/shaders/instancing/starsphere.vert
new file mode 100644
index 00000000..381e249f
--- /dev/null
+++ b/data/shaders/instancing/starsphere.vert
@@ -0,0 +1,9 @@
+#version 450
+
+layout (location = 0) out vec3 outUVW;
+
+void main()
+{
+ outUVW = vec3((gl_VertexIndex << 1) & 2, gl_VertexIndex & 2, gl_VertexIndex & 2);
+ gl_Position = vec4(outUVW.st * 2.0f - 1.0f, 0.0f, 1.0f);
+}
\ No newline at end of file
diff --git a/data/shaders/instancing/starsphere.vert.spv b/data/shaders/instancing/starsphere.vert.spv
new file mode 100644
index 00000000..256b58ca
Binary files /dev/null and b/data/shaders/instancing/starsphere.vert.spv differ
diff --git a/instancing/instancing.cpp b/instancing/instancing.cpp
index d752f801..e24a6178 100644
--- a/instancing/instancing.cpp
+++ b/instancing/instancing.cpp
@@ -81,6 +81,7 @@ public:
struct {
VkPipeline instancedRocks;
VkPipeline planet;
+ VkPipeline starfield;
} pipelines;
VkDescriptorSetLayout descriptorSetLayout;
@@ -89,7 +90,6 @@ public:
VkDescriptorSet planet;
} descriptorSets;
-
VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
{
title = "Vulkan Example - Instanced mesh rendering";
@@ -105,6 +105,7 @@ public:
{
vkDestroyPipeline(device, pipelines.instancedRocks, nullptr);
vkDestroyPipeline(device, pipelines.planet, nullptr);
+ vkDestroyPipeline(device, pipelines.starfield, nullptr);
vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
vkDestroyBuffer(device, instanceBuffer.buffer, nullptr);
@@ -148,6 +149,11 @@ public:
VkDeviceSize offsets[1] = { 0 };
+ // Star field
+ vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.planet, 0, NULL);
+ vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.starfield);
+ vkCmdDraw(drawCmdBuffers[i], 4, 1, 0, 0);
+
// Planet
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.planet, 0, NULL);
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.planet);
@@ -378,6 +384,16 @@ public:
inputState.vertexBindingDescriptionCount = 1;
inputState.vertexAttributeDescriptionCount = 4;
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.planet));
+
+ // Star field pipeline
+ rasterizationState.cullMode = VK_CULL_MODE_NONE;
+ depthStencilState.depthWriteEnable = VK_FALSE;
+ shaderStages[0] = loadShader(getAssetPath() + "shaders/instancing/starfield.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
+ shaderStages[1] = loadShader(getAssetPath() + "shaders/instancing/starfield.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
+ // Vertices are generated in the vertex shader
+ inputState.vertexBindingDescriptionCount = 0;
+ inputState.vertexAttributeDescriptionCount = 0;
+ VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.starfield));
}
float rnd(float range)
diff --git a/instancing/instancing.vcxproj b/instancing/instancing.vcxproj
index 4a8d04ea..8a1d5475 100644
--- a/instancing/instancing.vcxproj
+++ b/instancing/instancing.vcxproj
@@ -26,6 +26,8 @@
+
+
{CF2E27EC-5A81-412A-A3E2-E6EB5C8B66E3}
diff --git a/instancing/instancing.vcxproj.filters b/instancing/instancing.vcxproj.filters
index 152fd322..7f8c733c 100644
--- a/instancing/instancing.vcxproj.filters
+++ b/instancing/instancing.vcxproj.filters
@@ -55,5 +55,11 @@
Shaders
+
+ Shaders
+
+
+ Shaders
+
\ No newline at end of file
diff --git a/vulkanExamples.sln b/vulkanExamples.sln
index b7c1ec70..feaa06b2 100644
--- a/vulkanExamples.sln
+++ b/vulkanExamples.sln
@@ -127,6 +127,7 @@ EndProject
Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{9E815C67-731B-4559-938E-23CD771F0860}"
ProjectSection(SolutionItems) = preProject
CMakeLists.txt = CMakeLists.txt
+ README.md = README.md
EndProjectSection
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "screenshot", "screenshot\screenshot.vcxproj", "{AD1DAD4D-A753-4A78-88E2-B4DCE15D482F}"