Evas gl: Add shaders for RGB+Alpha mode

These shaders take two textures as input and sample RGB from
texture 1 and alpha from texture 2. This is the non-premultiplied
version, so RGB' = RGB*A.

This includes only the GLSL code.

src/modules/evas/engines/gl_common/shader/compile.sh

@@ -66,6 +66,9 @@ compile nv12_nomul
 compile yuy2
 compile yuy2_nomul
 
+compile rgb_a_pair
+compile rgb_a_pair_nomul
+
 compile filter_blur_bgra
 compile filter_blur_bgra_nomul
 compile filter_blur

src/modules/evas/engines/gl_common/shader/rgb_a_pair_frag.h

@@ -0,0 +1,18 @@
+"#ifdef GL_ES\n"
+"#ifdef GL_FRAGMENT_PRECISION_HIGH\n"
+"precision highp float;\n"
+"#else\n"
+"precision mediump float;\n"
+"#endif\n"
+"#endif\n"
+"uniform sampler2D tex;\n"
+"uniform sampler2D texm;\n"
+"varying vec4 col;\n"
+"varying vec2 tex_c;\n"
+"varying vec2 tex_a;\n"
+"void main()\n"
+"{\n"
+"   gl_FragColor.rgb = texture2D(tex, tex_c.xy).rgb * col.rgb * texture2D(texm, tex_a).g;\n"
+"   gl_FragColor.a = col.a * texture2D(texm, tex_a).g;\n"
+"}\n"
+"\n"

src/modules/evas/engines/gl_common/shader/rgb_a_pair_frag.shd

@@ -0,0 +1,18 @@
+#ifdef GL_ES
+#ifdef GL_FRAGMENT_PRECISION_HIGH
+precision highp float;
+#else
+precision mediump float;
+#endif
+#endif
+uniform sampler2D tex;
+uniform sampler2D texm;
+varying vec4 col;
+varying vec2 tex_c;
+varying vec2 tex_a;
+void main()
+{
+   gl_FragColor.rgb = texture2D(tex, tex_c.xy).rgb * col.rgb * texture2D(texm, tex_a).g;
+   gl_FragColor.a = col.a * texture2D(texm, tex_a).g;
+}
+

src/modules/evas/engines/gl_common/shader/rgb_a_pair_nomul_frag.h

@@ -0,0 +1,16 @@
+"#ifdef GL_ES\n"
+"#ifdef GL_FRAGMENT_PRECISION_HIGH\n"
+"precision highp float;\n"
+"#else\n"
+"precision mediump float;\n"
+"#endif\n"
+"#endif\n"
+"uniform sampler2D tex;\n"
+"uniform sampler2D texm;\n"
+"varying vec2 tex_c;\n"
+"varying vec2 tex_a;\n"
+"void main()\n"
+"{\n"
+"   gl_FragColor.rgb = texture2D(tex, tex_c.xy).rgb * texture2D(texm, tex_a).g;\n"
+"   gl_FragColor.a   = texture2D(texm, tex_a).g;\n"
+"}\n"

src/modules/evas/engines/gl_common/shader/rgb_a_pair_nomul_frag.shd

@@ -0,0 +1,16 @@
+#ifdef GL_ES
+#ifdef GL_FRAGMENT_PRECISION_HIGH
+precision highp float;
+#else
+precision mediump float;
+#endif
+#endif
+uniform sampler2D tex;
+uniform sampler2D texm;
+varying vec2 tex_c;
+varying vec2 tex_a;
+void main()
+{
+   gl_FragColor.rgb = texture2D(tex, tex_c.xy).rgb * texture2D(texm, tex_a).g;
+   gl_FragColor.a   = texture2D(texm, tex_a).g;
+}

src/modules/evas/engines/gl_common/shader/rgb_a_pair_nomul_vert.h

@@ -0,0 +1,16 @@
+"#ifdef GL_ES\n"
+"precision highp float;\n"
+"#endif\n"
+"attribute vec4 vertex;\n"
+"attribute vec2 tex_coord;\n"
+"attribute vec2 tex_coordm;\n"
+"uniform mat4 mvp;\n"
+"varying vec2 tex_c;\n"
+"varying vec2 tex_a;\n"
+"void main()\n"
+"{\n"
+"   gl_Position = mvp * vertex;\n"
+"   tex_c = tex_coord;\n"
+"   tex_a = tex_coordm;\n"
+"}\n"
+"\n"

src/modules/evas/engines/gl_common/shader/rgb_a_pair_nomul_vert.shd

@@ -0,0 +1,16 @@
+#ifdef GL_ES
+precision highp float;
+#endif
+attribute vec4 vertex;
+attribute vec2 tex_coord;
+attribute vec2 tex_coordm;
+uniform mat4 mvp;
+varying vec2 tex_c;
+varying vec2 tex_a;
+void main()
+{
+   gl_Position = mvp * vertex;
+   tex_c = tex_coord;
+   tex_a = tex_coordm;
+}
+

src/modules/evas/engines/gl_common/shader/rgb_a_pair_vert.h

@@ -0,0 +1,19 @@
+"#ifdef GL_ES\n"
+"precision highp float;\n"
+"#endif\n"
+"attribute vec4 vertex;\n"
+"attribute vec4 color;\n"
+"attribute vec2 tex_coord;\n"
+"attribute vec2 tex_coordm;\n"
+"uniform mat4 mvp;\n"
+"varying vec4 col;\n"
+"varying vec2 tex_c;\n"
+"varying vec2 tex_a;\n"
+"void main()\n"
+"{\n"
+"   gl_Position = mvp * vertex;\n"
+"   col = color;\n"
+"   tex_c = tex_coord;\n"
+"   tex_a = tex_coordm;\n"
+"}\n"
+"\n"

src/modules/evas/engines/gl_common/shader/rgb_a_pair_vert.shd

@@ -0,0 +1,19 @@
+#ifdef GL_ES
+precision highp float;
+#endif
+attribute vec4 vertex;
+attribute vec4 color;
+attribute vec2 tex_coord;
+attribute vec2 tex_coordm;
+uniform mat4 mvp;
+varying vec4 col;
+varying vec2 tex_c;
+varying vec2 tex_a;
+void main()
+{
+   gl_Position = mvp * vertex;
+   col = color;
+   tex_c = tex_coord;
+   tex_a = tex_coordm;
+}
+