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authorDan Goodliffe <dan@randomdan.homeip.net>2024-09-23 20:12:48 +0100
committerDan Goodliffe <dan@randomdan.homeip.net>2024-09-23 20:12:48 +0100
commitdbbfd39eef3b4d063ab7cdeb8d139b1bc11ba72c (patch)
tree0a880b2d14ac152014649d32088b73f17bf77297 /gfx/gl/shaders
parentMerge branch 'sunpos' (diff)
parentPopulate all layers of shadow stencil with view from all around (diff)
downloadilt-dbbfd39eef3b4d063ab7cdeb8d139b1bc11ba72c.tar.bz2
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Psycho-rebased branch billboard-shadows on top of main
Diffstat (limited to 'gfx/gl/shaders')
-rw-r--r--gfx/gl/shaders/shadowDynamicPointStencil.fs16
-rw-r--r--gfx/gl/shaders/shadowDynamicPointStencil.gs33
-rw-r--r--gfx/gl/shaders/shadowDynamicPointStencil.vs17
-rw-r--r--gfx/gl/shaders/shadowStencil.fs18
-rw-r--r--gfx/gl/shaders/shadowStencil.gs28
-rw-r--r--gfx/gl/shaders/shadowStencil.vs20
6 files changed, 132 insertions, 0 deletions
diff --git a/gfx/gl/shaders/shadowDynamicPointStencil.fs b/gfx/gl/shaders/shadowDynamicPointStencil.fs
new file mode 100644
index 0000000..e612691
--- /dev/null
+++ b/gfx/gl/shaders/shadowDynamicPointStencil.fs
@@ -0,0 +1,16 @@
+#version 330 core
+#extension GL_ARB_shading_language_420pack : enable
+
+layout(binding = 0) uniform sampler2DArray stencilDepth;
+flat in vec3 scale;
+in vec3 texCoord;
+
+void
+main()
+{
+ float stDepth = texture(stencilDepth, texCoord).r;
+ if (stDepth >= 1) {
+ discard;
+ }
+ gl_FragDepth = gl_FragCoord.z + (stDepth * scale.z);
+}
diff --git a/gfx/gl/shaders/shadowDynamicPointStencil.gs b/gfx/gl/shaders/shadowDynamicPointStencil.gs
new file mode 100644
index 0000000..b91937d
--- /dev/null
+++ b/gfx/gl/shaders/shadowDynamicPointStencil.gs
@@ -0,0 +1,33 @@
+#version 330 core
+#extension GL_ARB_viewport_array : enable
+
+const vec2[] corners = vec2[4](vec2(-1, -1), vec2(-1, 1), vec2(1, -1), vec2(1, 1));
+
+uniform mat4 viewProjection[4];
+uniform int viewProjections;
+uniform vec3 sizes[4];
+uniform float size;
+
+in ivec3 vworldPos[];
+
+flat out vec3 scale;
+out vec3 texCoord;
+
+layout(points) in;
+layout(triangle_strip, max_vertices = 16) out;
+
+void
+main()
+{
+ for (gl_Layer = 0; gl_Layer < viewProjections; ++gl_Layer) {
+ scale = 2.0 * size / sizes[gl_Layer];
+ vec4 pos = viewProjection[gl_Layer] * vec4(vworldPos[0], 1);
+ for (int c = 0; c < corners.length(); ++c) {
+ gl_Position = pos + vec4(scale.xy * corners[c], 0, 0);
+ gl_Position.z = max(gl_Position.z, -1);
+ texCoord = vec3((corners[c] * 0.5) + 0.5, 0);
+ EmitVertex();
+ }
+ EndPrimitive();
+ }
+}
diff --git a/gfx/gl/shaders/shadowDynamicPointStencil.vs b/gfx/gl/shaders/shadowDynamicPointStencil.vs
new file mode 100644
index 0000000..dadf9c2
--- /dev/null
+++ b/gfx/gl/shaders/shadowDynamicPointStencil.vs
@@ -0,0 +1,17 @@
+#version 330 core
+#extension GL_ARB_shading_language_420pack : enable
+
+layout(location = 0) in mat3 model;
+layout(location = 3) in ivec3 worldPos;
+uniform ivec3 viewPoint;
+uniform vec3 centre;
+
+out mat3 vmodel;
+out ivec3 vworldPos;
+
+void
+main()
+{
+ vmodel = model;
+ vworldPos = worldPos - viewPoint + ivec3(centre);
+}
diff --git a/gfx/gl/shaders/shadowStencil.fs b/gfx/gl/shaders/shadowStencil.fs
new file mode 100644
index 0000000..1164cc9
--- /dev/null
+++ b/gfx/gl/shaders/shadowStencil.fs
@@ -0,0 +1,18 @@
+#version 330 core
+#extension GL_ARB_shading_language_420pack : enable
+
+layout(binding = 0) uniform sampler2D textureAlbedo;
+
+include(`materialDetail.glsl')
+include(`materialCommon.glsl')
+in vec2 gTexCoords;
+flat in MaterialDetail gMaterial;
+
+void
+main()
+{
+ if (getTextureColour(gMaterial, gTexCoords).a < 0.5) {
+ discard;
+ }
+ gl_FragDepth = gl_FragCoord.z;
+}
diff --git a/gfx/gl/shaders/shadowStencil.gs b/gfx/gl/shaders/shadowStencil.gs
new file mode 100644
index 0000000..2c3f9bd
--- /dev/null
+++ b/gfx/gl/shaders/shadowStencil.gs
@@ -0,0 +1,28 @@
+#version 330 core
+#extension GL_ARB_viewport_array : enable
+
+include(`materialDetail.glsl')
+
+layout(triangles) in;
+layout(triangle_strip, max_vertices = 24) out;
+
+uniform mat4 viewProjection[8];
+in vec3 FragPos[];
+in vec2 TexCoords[];
+flat in MaterialDetail Material[];
+out vec2 gTexCoords;
+flat out MaterialDetail gMaterial;
+
+void
+main()
+{
+ for (gl_Layer = 0; gl_Layer < viewProjection.length(); ++gl_Layer) {
+ for (int v = 0; v < FragPos.length(); ++v) {
+ gl_Position = viewProjection[gl_Layer] * vec4(FragPos[v], 1);
+ gTexCoords = TexCoords[v];
+ gMaterial = Material[v];
+ EmitVertex();
+ }
+ EndPrimitive();
+ }
+}
diff --git a/gfx/gl/shaders/shadowStencil.vs b/gfx/gl/shaders/shadowStencil.vs
new file mode 100644
index 0000000..a15c4fb
--- /dev/null
+++ b/gfx/gl/shaders/shadowStencil.vs
@@ -0,0 +1,20 @@
+#version 330 core
+#extension GL_ARB_shading_language_420pack : enable
+
+layout(binding = 1) uniform usampler2DRect materialData;
+
+include(`meshIn.glsl')
+include(`materialDetail.glsl')
+include(`getMaterialDetail.glsl')
+
+out vec3 FragPos;
+out vec2 TexCoords;
+flat out MaterialDetail Material;
+
+void
+main()
+{
+ TexCoords = texCoord;
+ Material = getMaterialDetail(material);
+ FragPos = position;
+}