eac4c984df
This commit adds a new rendering backend, GLES2, and adds a project setting to enable it. Currently this backend can only be used on the X11 platform, but integrating into other platforms is planned.
73 lines
1.1 KiB
GLSL
73 lines
1.1 KiB
GLSL
[vertex]
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#ifdef USE_GLES_OVER_GL
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#define mediump
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#define highp
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#else
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precision mediump float;
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precision mediump int;
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#endif
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attribute highp vec4 vertex_attrib; // attrib:0
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attribute vec2 uv_in; // attrib:4
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attribute vec2 uv2_in; // attrib:5
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varying vec2 uv_interp;
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varying vec2 uv2_interp;
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#ifdef USE_COPY_SECTION
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uniform vec4 copy_section;
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#endif
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void main() {
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uv_interp = uv_in;
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uv2_interp = uv2_in;
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gl_Position = vertex_attrib;
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#ifdef USE_COPY_SECTION
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uv_interp = copy_section.xy + uv_interp * copy_section.zw;
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gl_Position.xy = (copy_section.xy + (gl_Position.xy * 0.5 + 0.5) * copy_section.zw) * 2.0 - 1.0;
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#endif
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}
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[fragment]
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#ifdef USE_GLES_OVER_GL
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#define mediump
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#define highp
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#else
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precision mediump float;
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precision mediump int;
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#endif
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varying vec2 uv_interp;
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uniform sampler2D source; // texunit:0
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varying vec2 uv2_interp;
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#ifdef USE_CUSTOM_ALPHA
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uniform float custom_alpha;
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#endif
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void main() {
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//vec4 color = color_interp;
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vec4 color = texture2D( source, uv_interp );
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#ifdef USE_NO_ALPHA
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color.a=1.0;
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#endif
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#ifdef USE_CUSTOM_ALPHA
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color.a=custom_alpha;
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#endif
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gl_FragColor = color;
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}
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