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Eevee: SSR: Add fullscreen raytrace.

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This commit is contained in:
Clément Foucault
2017-07-21 15:06:29 +02:00
parent e0c1323737
commit 18aa6cf1cc
3 changed files with 36 additions and 6 deletions
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21
source/blender/draw/engines/eevee/shaders/effect_ssr_frag.glsl
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@@ -34,15 +34,24 @@ layout(location = 1) out vec4 pdfData;
void main()
{
#ifdef FULLRES
ivec2 fullres_texel = ivec2(gl_FragCoord.xy);
ivec2 halfres_texel = fullres_texel;
#else
ivec2 fullres_texel = ivec2(gl_FragCoord.xy) * 2;
ivec2 halfres_texel = ivec2(gl_FragCoord.xy);
#endif
float depth = texelFetch(depthBuffer, fullres_texel, 0).r;
/* Early out */
if (depth == 1.0)
discard;
vec2 uvs = gl_FragCoord.xy * 2.0 / vec2(textureSize(depthBuffer, 0));
vec2 uvs = gl_FragCoord.xy / vec2(textureSize(depthBuffer, 0));
#ifndef FULLRES
uvs *= 2.0;
#endif
/* Using view space */
vec3 viewPosition = get_view_space_from_depth(uvs, depth);
@@ -75,8 +84,10 @@ void main()
/* Raycast over screen */
float hit_dist = -1.0;
/* Only raytrace if ray is above the surface normal */
/* Note : this still fails in some cases like with normal map.
* We should check against the geometric normal but we don't have it at this stage. */
if (dot(R, N) > 0.0001) {
/* Only raytrace if ray is above the surface normal */
hit_dist = raycast(depthBuffer, viewPosition, R);
}
@@ -195,8 +206,12 @@ float screen_border_mask(vec2 past_hit_co, vec3 hit)
void main()
{
ivec2 halfres_texel = ivec2(gl_FragCoord.xy / 2.0);
ivec2 fullres_texel = ivec2(gl_FragCoord.xy);
#ifdef FULLRES
ivec2 halfres_texel = fullres_texel;
#else
ivec2 halfres_texel = ivec2(gl_FragCoord.xy / 2.0);
#endif
vec2 texture_size = vec2(textureSize(depthBuffer, 0));
vec2 uvs = gl_FragCoord.xy / texture_size;
vec3 rand = texelFetch(utilTex, ivec3(fullres_texel % LUT_SIZE, 2), 0).rba;