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authorunknown <paulx161@umn.edu>2021-02-03 14:22:28 -0600
committerunknown <paulx161@umn.edu>2021-02-03 14:22:28 -0600
commit9b83919815f6a6ce5d73da1c28483970d0ca5589 (patch)
tree4558864445dccc1605e5315e0bb11c46d2018da1 /dev/MinGfx/src/shaders
parentAdded worksheet and support code for assignment 2 (diff)
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added dev/MinGfx/
Diffstat (limited to '')
-rw-r--r--dev/MinGfx/src/shaders/default.frag76
-rw-r--r--dev/MinGfx/src/shaders/default.vert39
-rw-r--r--dev/MinGfx/src/shaders/fullscreen.frag23
-rw-r--r--dev/MinGfx/src/shaders/fullscreen.vert24
-rw-r--r--dev/MinGfx/src/shaders/text.frag25
-rw-r--r--dev/MinGfx/src/shaders/text.vert28
6 files changed, 215 insertions, 0 deletions
diff --git a/dev/MinGfx/src/shaders/default.frag b/dev/MinGfx/src/shaders/default.frag
new file mode 100644
index 0000000..59b9f27
--- /dev/null
+++ b/dev/MinGfx/src/shaders/default.frag
@@ -0,0 +1,76 @@
+#version 330
+
+/*
+ This file is part of the MinGfx Project.
+
+ Copyright (c) 2017,2018 Regents of the University of Minnesota.
+ All Rights Reserved.
+
+ Original Author(s) of this File:
+ Dan Keefe, 2018, University of Minnesota
+
+ Author(s) of Significant Updates/Modifications to the File:
+ ...
+ */
+
+const int MAX_LIGHTS = 10;
+
+in vec3 N;
+in vec3 v;
+in vec2 uv;
+in vec4 col_interp;
+
+out vec4 fragColor;
+
+uniform int NumLights;
+uniform vec3 LightPositions[MAX_LIGHTS];
+uniform vec4 LightIntensitiesAmbient[MAX_LIGHTS];
+uniform vec4 LightIntensitiesDiffuse[MAX_LIGHTS];
+uniform vec4 LightIntensitiesSpecular[MAX_LIGHTS];
+
+uniform vec4 MatReflectanceAmbient;
+uniform vec4 MatReflectanceDiffuse;
+uniform vec4 MatReflectanceSpecular;
+uniform float MatReflectanceShininess;
+
+uniform int UseSurfaceTexture;
+uniform sampler2D SurfaceTexture;
+
+void main() {
+
+ // initialize the fragment color to the interpolated value of per-vertex colors
+ // since some meshes will have color specified per-vertex. if there are no
+ // per vertex colors, then this will default to white.
+ fragColor = col_interp;
+
+
+ // if there is a surface texture, then factor this into the base color of this
+ // fragment as well
+ if (UseSurfaceTexture != 0) {
+ fragColor *= texture(SurfaceTexture, uv);
+ }
+
+ // modulate this base color by the additive intensity from all light sources
+ vec3 Ia = vec3(0,0,0);
+ vec3 Id = vec3(0,0,0);
+ vec3 Is = vec3(0,0,0);
+
+ vec3 n = normalize(N);
+
+ for (int i=0; i<NumLights; i++) {
+ vec3 L = normalize(LightPositions[i] - v);
+ vec3 V = normalize(-v); // eye is at (0,0,0)
+ vec3 R = normalize(-reflect(L,N));
+
+ Ia += MatReflectanceAmbient.rgb * LightIntensitiesAmbient[i].rgb;
+
+ if (dot(n,L) > 0.0) {
+ Id += clamp(MatReflectanceDiffuse.rgb * LightIntensitiesDiffuse[i].rgb * max(dot(n, L), 0.0), 0.0, 1.0);
+
+ Is += MatReflectanceSpecular.rgb * LightIntensitiesSpecular[i].rgb * pow(max(dot(R, V), 0.0), MatReflectanceShininess);
+ Is = clamp(Is, 0.0, 1.0);
+ }
+ }
+ fragColor.rgb *= Ia + Id + Is;
+}
+
diff --git a/dev/MinGfx/src/shaders/default.vert b/dev/MinGfx/src/shaders/default.vert
new file mode 100644
index 0000000..c961992
--- /dev/null
+++ b/dev/MinGfx/src/shaders/default.vert
@@ -0,0 +1,39 @@
+#version 330
+
+/*
+ This file is part of the MinGfx Project.
+
+ Copyright (c) 2017,2018 Regents of the University of Minnesota.
+ All Rights Reserved.
+
+ Original Author(s) of this File:
+ Dan Keefe, 2018, University of Minnesota
+
+ Author(s) of Significant Updates/Modifications to the File:
+ ...
+ */
+
+layout(location = 0) in vec3 position;
+layout(location = 1) in vec3 normal;
+layout(location = 2) in vec4 color;
+layout(location = 3) in vec2 texcoord;
+
+layout(location = 8) in mat4 instance_xform;
+
+uniform mat4 ModelMatrix;
+uniform mat4 ViewMatrix;
+uniform mat4 ProjectionMatrix;
+uniform mat4 NormalMatrix;
+
+out vec3 N;
+out vec3 v;
+out vec2 uv;
+out vec4 col_interp;
+
+void main() {
+ v = (ViewMatrix * ModelMatrix * vec4(position, 1)).xyz;
+ N = normalize((NormalMatrix * vec4(normal, 0)).xyz);
+ uv = texcoord.xy;
+ gl_Position = ProjectionMatrix * ViewMatrix * instance_xform * ModelMatrix * vec4(position, 1);
+ col_interp = color;
+} \ No newline at end of file
diff --git a/dev/MinGfx/src/shaders/fullscreen.frag b/dev/MinGfx/src/shaders/fullscreen.frag
new file mode 100644
index 0000000..ce3d624
--- /dev/null
+++ b/dev/MinGfx/src/shaders/fullscreen.frag
@@ -0,0 +1,23 @@
+#version 330
+
+/*
+ This file is part of the MinGfx Project.
+
+ Copyright (c) 2017,2018 Regents of the University of Minnesota.
+ All Rights Reserved.
+
+ Original Author(s) of this File:
+ Dan Keefe, 2018, University of Minnesota
+
+ Author(s) of Significant Updates/Modifications to the File:
+ ...
+ */
+
+in vec2 uv;
+uniform sampler2D SurfaceTexture;
+
+out vec4 fragColor;
+
+void main() {
+ fragColor = texture(SurfaceTexture, uv);
+} \ No newline at end of file
diff --git a/dev/MinGfx/src/shaders/fullscreen.vert b/dev/MinGfx/src/shaders/fullscreen.vert
new file mode 100644
index 0000000..db96659
--- /dev/null
+++ b/dev/MinGfx/src/shaders/fullscreen.vert
@@ -0,0 +1,24 @@
+#version 330
+
+/*
+ This file is part of the MinGfx Project.
+
+ Copyright (c) 2017,2018 Regents of the University of Minnesota.
+ All Rights Reserved.
+
+ Original Author(s) of this File:
+ Dan Keefe, 2018, University of Minnesota
+
+ Author(s) of Significant Updates/Modifications to the File:
+ ...
+ */
+
+layout(location = 0) in vec3 position;
+layout(location = 3) in vec2 texcoord;
+
+out vec2 uv;
+
+void main() {
+ uv = texcoord.xy;
+ gl_Position = vec4(position,1.0);
+}
diff --git a/dev/MinGfx/src/shaders/text.frag b/dev/MinGfx/src/shaders/text.frag
new file mode 100644
index 0000000..2642061
--- /dev/null
+++ b/dev/MinGfx/src/shaders/text.frag
@@ -0,0 +1,25 @@
+#version 330
+
+/*
+ This file is part of the MinGfx Project.
+
+ Copyright (c) 2017,2018 Regents of the University of Minnesota.
+ All Rights Reserved.
+
+ Original Author(s) of this File:
+ Dan Keefe, 2018, University of Minnesota
+
+ Author(s) of Significant Updates/Modifications to the File:
+ ...
+ */
+
+in vec2 uv;
+uniform vec4 color;
+uniform sampler2D font_atlas;
+
+out vec4 frag_color;
+
+void main() {
+ frag_color = color * texture(font_atlas, uv);
+ // frag_color.a = frag_color.r;
+} \ No newline at end of file
diff --git a/dev/MinGfx/src/shaders/text.vert b/dev/MinGfx/src/shaders/text.vert
new file mode 100644
index 0000000..36c6b03
--- /dev/null
+++ b/dev/MinGfx/src/shaders/text.vert
@@ -0,0 +1,28 @@
+#version 330
+
+/*
+ This file is part of the MinGfx Project.
+
+ Copyright (c) 2017,2018 Regents of the University of Minnesota.
+ All Rights Reserved.
+
+ Original Author(s) of this File:
+ Dan Keefe, 2018, University of Minnesota
+
+ Author(s) of Significant Updates/Modifications to the File:
+ ...
+ */
+
+layout(location = 0) in vec3 vertex;
+layout(location = 3) in vec2 texcoord;
+
+uniform mat4 mvp_matrix;
+uniform float scale;
+uniform vec3 offset;
+
+out vec2 uv;
+
+void main() {
+ uv = texcoord.xy;
+ gl_Position = mvp_matrix * vec4(scale*(vertex+offset),1.0);
+}