gtk2/gsk/gl/resources/blit.glsl

// VERTEX_SHADER:
// blit.glsl

void main() {
  gl_Position = u_projection * u_modelview * vec4(aPosition, 0.0, 1.0);

  vUv = vec2(aUv.x, aUv.y);
}

// FRAGMENT_SHADER:
// blit.glsl

void main() {
  vec4 diffuse = GskTexture(u_source, vUv);

  gskSetScaledOutputColor(diffuse, u_alpha);
}
gsk: Give ngl its own shader sources We may want to change the interface between the shaders and the renderer for ngl, and therefore, sharing the shaders between gl and ngl will not be practical, going forward. 2021-03-12 02:31:31 +00:00			`// VERTEX_SHADER:`
ngl: Identify shaders Add a comment with a name to each shader. That makes identifying the shaders in apitrace much easier. 2021-03-12 19:25:05 +00:00			`// blit.glsl`
ngl: Set color as vertex attribute Instead of using uniforms for color used in multiple programs, pass it as vertex attributes. This will let us batch more draw calls, since we don't have to change uniforms so often. In particular, for syntax-highlighted text. 2021-03-12 00:46:15 +00:00
gsk: Give ngl its own shader sources We may want to change the interface between the shaders and the renderer for ngl, and therefore, sharing the shaders between gl and ngl will not be practical, going forward. 2021-03-12 02:31:31 +00:00			`void main() {`
			`gl_Position = u_projection * u_modelview * vec4(aPosition, 0.0, 1.0);`

			`vUv = vec2(aUv.x, aUv.y);`
			`}`

			`// FRAGMENT_SHADER:`
ngl: Identify shaders Add a comment with a name to each shader. That makes identifying the shaders in apitrace much easier. 2021-03-12 19:25:05 +00:00			`// blit.glsl`

gsk: Give ngl its own shader sources We may want to change the interface between the shaders and the renderer for ngl, and therefore, sharing the shaders between gl and ngl will not be practical, going forward. 2021-03-12 02:31:31 +00:00			`void main() {`
			`vec4 diffuse = GskTexture(u_source, vUv);`

ngl: Small shader improvements Add a variant of gskSetOutputColor that saves a few multiplications, and use it where possible. 2021-03-13 23:21:45 +00:00			`gskSetScaledOutputColor(diffuse, u_alpha);`
gsk: Give ngl its own shader sources We may want to change the interface between the shaders and the renderer for ngl, and therefore, sharing the shaders between gl and ngl will not be practical, going forward. 2021-03-12 02:31:31 +00:00			`}`