Merge branch 'support-code' of https://github.umn.edu/umn-csci-4611-f21/shared-upstream

1 files changed, 18 insertions, 0 deletions

diff --git a/dev/a5-artrender/shaders/gouraud.frag b/dev/a5-artrender/shaders/gouraud.frag
new file mode 100644
index 0000000..73d43c7
--- /dev/null
+++ b/dev/a5-artrender/shaders/gouraud.frag
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+#version 330
+
+// This color comes in from the output of the vertex shader stage.  The current
+// fragment will lie somewhere within a triangle.  So, the vec4 that is passed
+// in here is actually an interpolated version of the colors output by the 3
+// vertex shader programs run for the 3 vertices of the triangle.
+in vec4 color;
+
+
+// All fragment shaders are required to output a vec4 color.
+out vec4 final_color;
+
+
+void main() {
+    // For a Gouraud shader, there is nothing more to compute at this stage.  We
+    // just output the input color.
+    final_color = vec4(0,0,0,1);
+}