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Eevee: SSR: Make raymarch step bigger.

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This commit is contained in:
Clément Foucault
2017-07-19 14:19:03 +02:00
parent ebc2833ca1
commit 14bedf80cd
1 changed files with 6 additions and 6 deletions
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12
source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl
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@@ -80,7 +80,7 @@ float raycast(sampler2D depth_texture, vec3 ray_origin, vec3 ray_dir)
vec4 pqk = vec4(P0, Q0.z, k0);
/* Scale derivatives by the desired pixel stride */
vec4 dPQK = vec4(dP, dQ.z, dk) * 4.0;
vec4 dPQK = vec4(dP, dQ.z, dk) * 8.0;
/* We track the ray depth at +/- 1/2 pixel to treat pixels as clip-space solid
* voxels. Because the depth at -1/2 for a given pixel will be the same as at
@@ -94,7 +94,7 @@ float raycast(sampler2D depth_texture, vec3 ray_origin, vec3 ray_dir)
float end = P1.x * step_sign;
bool hit = false;
float hitstep, refinestep, raw_depth, view_depth;
float hitstep, raw_depth, view_depth;
for (hitstep = 0.0; hitstep < MAX_STEP && !hit; hitstep++) {
/* Ray finished & no hit*/
if ((pqk.x * step_sign) > end) break;
@@ -122,9 +122,9 @@ float raycast(sampler2D depth_texture, vec3 ray_origin, vec3 ray_dir)
pqk -= dPQK;
/* And do a finer trace over this segment */
dPQK /= 4.0;
dPQK /= 16.0;
for (refinestep = 0.0; refinestep < 4.0; refinestep++) {
for (float refinestep = 0.0; refinestep < 16.0; refinestep++) {
/* step through current cell */
pqk += dPQK;
@@ -146,8 +146,8 @@ float raycast(sampler2D depth_texture, vec3 ray_origin, vec3 ray_dir)
/* Check if we are somewhere near the surface. */
/* TODO user threshold */
float threshold = 0.05 / pqk.w; /* In view space */
if (zmax < (view_depth - threshold)) {
float threshold = 0.1; /* In clip space */
if (zmax < view_depth - threshold) {
hit = false;
}