From 829e3fd3d8e77db800ff04db965cc7d6ca5e7d87 Mon Sep 17 00:00:00 2001
From: Warwick New <warwick.l.e.new@gmail.com>
Date: Mon, 6 Jan 2025 16:30:47 +0000
Subject: [PATCH] Added dynamic state

---
 compile_shaders.sh       |  4 ++--
 shaders/shader.frag      |  7 -------
 shaders/shader.frag.glsl | 10 ++++++++++
 shaders/shader.vert      | 11 -----------
 shaders/shader.vert.glsl | 20 ++++++++++++++++++++
 src/main.c               | 16 ++++++++++++++++
 6 files changed, 48 insertions(+), 20 deletions(-)
 delete mode 100644 shaders/shader.frag
 create mode 100644 shaders/shader.frag.glsl
 delete mode 100644 shaders/shader.vert
 create mode 100644 shaders/shader.vert.glsl

diff --git a/compile_shaders.sh b/compile_shaders.sh
index 08a2e37..e1a15df 100755
--- a/compile_shaders.sh
+++ b/compile_shaders.sh
@@ -3,5 +3,5 @@
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 cd $SCRIPT_DIR
 
-glslc shaders/shader.vert -o shaders/shader.vert.spv
-glslc shaders/shader.frag -o shaders/shader.frag.spv
+glslc -fshader-stage=vert shaders/shader.vert.glsl -o shaders/shader.vert.spv
+glslc -fshader-stage=frag shaders/shader.frag.glsl -o shaders/shader.frag.spv
diff --git a/shaders/shader.frag b/shaders/shader.frag
deleted file mode 100644
index 43674b2..0000000
--- a/shaders/shader.frag
+++ /dev/null
@@ -1,7 +0,0 @@
-#version 450
-
-layout (location = 0) out vec4 outColor;
-
-void main() {
-    outColor = vec4(0.0, 1.0, 0.0, 1.0);
-}
diff --git a/shaders/shader.frag.glsl b/shaders/shader.frag.glsl
new file mode 100644
index 0000000..571c04e
--- /dev/null
+++ b/shaders/shader.frag.glsl
@@ -0,0 +1,10 @@
+#version 450
+
+layout(location = 0) in vec3 fragColor;
+
+layout(location = 0) out vec4 outColor;
+
+void main() {
+    outColor = vec4(fragColor, 1.0);
+}
+
diff --git a/shaders/shader.vert b/shaders/shader.vert
deleted file mode 100644
index 0fb555d..0000000
--- a/shaders/shader.vert
+++ /dev/null
@@ -1,11 +0,0 @@
-#version 450
-
-vec2 positions[3] = vec2[] (
-    vec2(0.0,-0.5),
-    vec2(0.5,0.5),
-    vec2(-0.5,0.5)
-);
-
-void main() {
-    gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
-}
diff --git a/shaders/shader.vert.glsl b/shaders/shader.vert.glsl
new file mode 100644
index 0000000..f5b2f8d
--- /dev/null
+++ b/shaders/shader.vert.glsl
@@ -0,0 +1,20 @@
+#version 450
+
+layout(location = 0) out vec3 fragColor;
+
+vec2 positions[3] = vec2[](
+    vec2(0.0, -0.5),
+    vec2(0.5, 0.5),
+    vec2(-0.5, 0.5)
+);
+
+vec3 colors[3] = vec3[](
+    vec3(1.0, 0.0, 0.0),
+    vec3(0.0, 1.0, 0.0),
+    vec3(0.0, 0.0, 1.0)
+);
+
+void main() {
+    gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
+    fragColor = colors[gl_VertexIndex];
+}
diff --git a/src/main.c b/src/main.c
index 64e6564..59145d9 100644
--- a/src/main.c
+++ b/src/main.c
@@ -697,6 +697,22 @@ void createGraphicsPipeline(Application *app) {
   VkPipelineShaderStageCreateInfo shaderStages[] = {vertShaderStageInfo,
                                                     fragShaderStageInfo};
 
+  size_t dynamicStatesCount = 2;
+  VkDynamicState dynamicStates[] = {VK_DYNAMIC_STATE_VIEWPORT,
+                                    VK_DYNAMIC_STATE_SCISSOR};
+  VkPipelineDynamicStateCreateInfo dynamicState = {0};
+  dynamicState.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
+  dynamicState.dynamicStateCount = dynamicStatesCount;
+  dynamicState.pDynamicStates = dynamicStates;
+
+  VkPipelineVertexInputStateCreateInfo vertexInputInfo = {0};
+  vertexInputInfo.sType =
+      VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
+  vertexInputInfo.vertexBindingDescriptionCount = 0;
+  vertexInputInfo.pVertexBindingDescriptions = NULL; // Optional
+  vertexInputInfo.vertexAttributeDescriptionCount = 0;
+  vertexInputInfo.pVertexAttributeDescriptions = NULL; // Optional
+
   vkDestroyShaderModule(app->device, fragShaderModule, NULL);
   vkDestroyShaderModule(app->device, vertShaderModule, NULL);
 }