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#pragma BLENDER_REQUIRE(common_colormanagement_lib.glsl)
/* Keep in sync with image_engine.c */
#define IMAGE_DRAW_FLAG_SHOW_ALPHA (1 << 0)
#define IMAGE_DRAW_FLAG_APPLY_ALPHA (1 << 1)
#define IMAGE_DRAW_FLAG_SHUFFLING (1 << 2)
#define IMAGE_DRAW_FLAG_DEPTH (1 << 3)
#define IMAGE_DRAW_FLAG_DEPTH_ALWAYS (1 << 4)
#define FAR_DISTANCE farNearDistances.x
#define NEAR_DISTANCE farNearDistances.y
void main()
{
ivec2 uvs_clamped = ivec2(uv_screen);
if ((drawFlags & IMAGE_DRAW_FLAG_DEPTH_ALWAYS) == 0) {
float depth = texelFetch(depth_texture, uvs_clamped, 0).r;
if (depth == 1.0) {
discard;
}
}
vec4 tex_color = texelFetch(imageTexture, uvs_clamped, 0);
if ((drawFlags & IMAGE_DRAW_FLAG_APPLY_ALPHA) != 0) {
if (!imgPremultiplied) {
tex_color.rgb *= tex_color.a;
}
}
if ((drawFlags & IMAGE_DRAW_FLAG_DEPTH) != 0) {
tex_color = smoothstep(FAR_DISTANCE, NEAR_DISTANCE, tex_color);
}
if ((drawFlags & IMAGE_DRAW_FLAG_SHUFFLING) != 0) {
tex_color = vec4(dot(tex_color, shuffle));
}
if ((drawFlags & IMAGE_DRAW_FLAG_SHOW_ALPHA) == 0) {
tex_color.a = 1.0;
}
fragColor = tex_color;
}
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