Blend shapes using transform feedback (GPU)

2 files changed, 198 insertions, 0 deletions

diff --git a/drivers/gles3/shaders/SCsub b/drivers/gles3/shaders/SCsub
index 44d325b091..a9808dcbcf 100644
--- a/drivers/gles3/shaders/SCsub
+++ b/drivers/gles3/shaders/SCsub
@@ -7,4 +7,5 @@ if env['BUILDERS'].has_key('GLES3_GLSL'):
 	env.GLES3_GLSL('scene.glsl');
 	env.GLES3_GLSL('cubemap_filter.glsl');
 	env.GLES3_GLSL('cube_to_dp.glsl');
+	env.GLES3_GLSL('blend_shape.glsl');
 
diff --git a/drivers/gles3/shaders/blend_shape.glsl b/drivers/gles3/shaders/blend_shape.glsl
new file mode 100644
index 0000000000..4e0d066823
--- /dev/null
+++ b/drivers/gles3/shaders/blend_shape.glsl
@@ -0,0 +1,197 @@
+[vertex]
+
+
+/*
+from VisualServer:
+
+ARRAY_VERTEX=0,
+ARRAY_NORMAL=1,
+ARRAY_TANGENT=2,
+ARRAY_COLOR=3,
+ARRAY_TEX_UV=4,
+ARRAY_TEX_UV2=5,
+ARRAY_BONES=6,
+ARRAY_WEIGHTS=7,
+ARRAY_INDEX=8,
+*/
+
+#ifdef USE_2D_VERTEX
+#define VFORMAT vec2
+#else
+#define VFORMAT vec3
+#endif
+
+/* INPUT ATTRIBS */
+
+layout(location=0) in highp VFORMAT vertex_attrib;
+layout(location=1) in vec3 normal_attrib;
+
+#ifdef ENABLE_TANGENT
+layout(location=2) in vec4 tangent_attrib;
+#endif
+
+#ifdef ENABLE_COLOR
+layout(location=3) in vec4 color_attrib;
+#endif
+
+#ifdef ENABLE_UV
+layout(location=4) in vec2 uv_attrib;
+#endif
+
+#ifdef ENABLE_UV2
+layout(location=5) in vec2 uv2_attrib;
+#endif
+
+#ifdef ENABLE_SKELETON
+layout(location=6) in ivec4 bone_attrib;
+layout(location=7) in vec4 weight_attrib;
+#endif
+
+/* BLEND ATTRIBS */
+
+#ifdef ENABLE_BLEND
+
+layout(location=8) in highp VFORMAT vertex_attrib_blend;
+layout(location=9) in vec3 normal_attrib_blend;
+
+#ifdef ENABLE_TANGENT
+layout(location=10) in vec4 tangent_attrib_blend;
+#endif
+
+#ifdef ENABLE_COLOR
+layout(location=11) in vec4 color_attrib_blend;
+#endif
+
+#ifdef ENABLE_UV
+layout(location=12) in vec2 uv_attrib_blend;
+#endif
+
+#ifdef ENABLE_UV2
+layout(location=13) in vec2 uv2_attrib_blend;
+#endif
+
+#ifdef ENABLE_SKELETON
+layout(location=14) in ivec4 bone_attrib_blend;
+layout(location=15) in vec4 weight_attrib_blend;
+#endif
+
+#endif
+
+/* OUTPUTS */
+
+out VFORMAT vertex_out; //tfb:
+
+#ifdef ENABLE_NORMAL
+out vec3 normal_out; //tfb:ENABLE_NORMAL
+#endif
+
+#ifdef ENABLE_TANGENT
+out vec4 tangent_out; //tfb:ENABLE_TANGENT
+#endif
+
+#ifdef ENABLE_COLOR
+out vec4 color_out; //tfb:ENABLE_COLOR
+#endif
+
+#ifdef ENABLE_UV
+out vec2 uv_out; //tfb:ENABLE_UV
+#endif
+
+#ifdef ENABLE_UV2
+out vec2 uv2_out; //tfb:ENABLE_UV2
+#endif
+
+#ifdef ENABLE_SKELETON
+out ivec4 bone_out; //tfb:ENABLE_SKELETON
+out vec4 weight_out; //tfb:ENABLE_SKELETON
+#endif
+
+uniform float blend_amount;
+
+void main() {
+
+
+#ifdef ENABLE_BLEND
+
+	vertex_out = vertex_attrib_blend + vertex_attrib * blend_amount;
+
+#ifdef ENABLE_NORMAL
+	normal_out = normal_attrib_blend + normal_attrib * blend_amount;
+#endif
+
+#ifdef ENABLE_TANGENT
+
+	tangent_out.xyz = tangent_attrib_blend.xyz + tangent_attrib.xyz * blend_amount;
+	tangent_out.w = tangent_attrib_blend.w; //just copy, no point in blending his
+#endif
+
+#ifdef ENABLE_COLOR
+
+	color_out = color_attrib_blend + color_attrib * blend_amount;
+#endif
+
+#ifdef ENABLE_UV
+
+	uv_out = uv_attrib_blend + uv_attrib * blend_amount;
+#endif
+
+#ifdef ENABLE_UV2
+
+	uv2_out = uv2_attrib_blend + uv2_attrib * blend_amount;
+#endif
+
+
+#ifdef ENABLE_SKELETON
+
+	bone_out = bone_attrib_blend;
+	weight_out = weight_attrib_blend + weight_attrib * blend_amount;
+#endif
+
+#else //ENABLE_BLEND
+
+
+	vertex_out = vertex_attrib * blend_amount;
+
+#ifdef ENABLE_NORMAL
+	normal_out = normal_attrib * blend_amount;
+#endif
+
+#ifdef ENABLE_TANGENT
+
+	tangent_out.xyz = tangent_attrib.xyz * blend_amount;
+	tangent_out.w = tangent_attrib.w; //just copy, no point in blending his
+#endif
+
+#ifdef ENABLE_COLOR
+
+	color_out = color_attrib * blend_amount;
+#endif
+
+#ifdef ENABLE_UV
+
+	uv_out = uv_attrib * blend_amount;
+#endif
+
+#ifdef ENABLE_UV2
+
+	uv2_out = uv2_attrib * blend_amount;
+#endif
+
+
+#ifdef ENABLE_SKELETON
+
+	bone_out = bone_attrib;
+	weight_out = weight_attrib * blend_amount;
+#endif
+
+#endif
+	gl_Position = vec4(0.0);
+}
+
+[fragment]
+
+
+void main() {
+
+}
+