Gem 52940d997a5dfcd482c52b52e083e9e3947e838f linux/amd64

built 'master:52940d997a5dfcd482c52b52e083e9e3947e838f' for linux/amd64

3 files changed, 298 insertions, 0 deletions

diff --git a/Gem/examples/10.glsl/16.vertexbuffer_attributes.pd b/Gem/examples/10.glsl/16.vertexbuffer_attributes.pd
new file mode 100644
index 0000000..964b46b
--- /dev/null
+++ b/Gem/examples/10.glsl/16.vertexbuffer_attributes.pd
@@ -0,0 +1,231 @@
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+\, attribute BrickSize \$1_BrickSize \, attribute BrickPct \$1_BrickPct
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+#X text 67 127 if the attribute already exists in gemvertexbuffer \,
+this message updates the attribute with the array data;
+#X text 66 60 attribute <name> <array> <offset(optional)>;
+#X text 66 281 attribute tables are interleaved only;
+#X text 64 177 if the vert or frag files are changed \, the attributes
+in gemvertexbuffer can be reset with a "reset_attributes" msg and re-added
+;
+#X text 65 236 there is no limit for the amount of attributes that
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diff --git a/Gem/examples/data/brick.frag b/Gem/examples/data/brick.frag
new file mode 100644
index 0000000..53e4f1b
--- /dev/null
+++ b/Gem/examples/data/brick.frag
@@ -0,0 +1,24 @@
+varying vec3 BrickColor_f, MortarColor_f;
+varying vec2 BrickSize_f, BrickPct_f;
+
+varying vec2 MCposition;
+varying float LightIntensity;
+
+
+void main()
+{
+   vec3 color;
+   vec2 position, useBrick;
+   position = MCposition / BrickSize_f;
+  
+   if (fract(position.y * 0.5) > 0.5)
+      position.x += 0.5;
+
+   position = fract(position);
+
+   useBrick = step(position, BrickPct_f);
+
+   color    = mix(MortarColor_f, BrickColor_f, useBrick.x * useBrick.y);
+   color   *= LightIntensity;
+   gl_FragColor = vec4(color, 1.0);
+}
\ No newline at end of file
diff --git a/Gem/examples/data/brick.vert b/Gem/examples/data/brick.vert
new file mode 100644
index 0000000..1a54a8b
--- /dev/null
+++ b/Gem/examples/data/brick.vert
@@ -0,0 +1,43 @@
+attribute vec3 LightPosition; 
+attribute vec3 BrickColor, MortarColor;
+attribute vec2 BrickSize, BrickPct;
+
+varying   vec3 BrickColor_f, MortarColor_f;
+varying   vec2 BrickSize_f, BrickPct_f;
+
+
+const float SpecularContribution = 0.3;
+const float DiffuseContribution = 1.0 - SpecularContribution;
+
+varying float LightIntensity;
+varying vec2  MCposition;
+
+void main()
+{
+   // conversions
+   BrickColor_f = BrickColor;
+   MortarColor_f = MortarColor;
+   BrickSize_f = BrickSize;
+   BrickPct_f = BrickPct;
+   //
+
+   vec3 ecPosition = vec3(gl_ModelViewMatrix * gl_Vertex);
+   vec3 tnorm      = normalize(gl_NormalMatrix * gl_Normal);
+   vec3 lightVec   = normalize(LightPosition - ecPosition);
+   vec3 reflectVec = reflect(-lightVec, tnorm);
+   vec3 viewVec    = normalize(-ecPosition);
+   float diffuse   = max(dot(lightVec, tnorm), 0.0);
+   float spec      = 0.0;
+
+   if (diffuse > 0.0)
+   {
+      spec = max(dot(reflectVec, viewVec), 0.0);
+      spec = pow(spec, 16.0);
+   }
+
+   LightIntensity  = DiffuseContribution * diffuse + 
+   		     SpecularContribution * spec;
+
+   MCposition      = gl_Vertex.xy;
+   gl_Position     = ftransform();
+}