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Fix GLES 2 Spotlight Bug

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Fixes https://github.com/godotengine/godot/issues/69759
Fixes https://github.com/godotengine/godot/issues/54343
Fixes https://github.com/godotengine/godot/issues/25526
This commit is contained in:
norrath-hero 2022-12-10 04:03:36 +08:00 committed by norrath_hero
parent 9983df9210
commit aca8999cc9
1 changed files with 6 additions and 10 deletions
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16
drivers/gles2/shaders/scene.glsl
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@ -1499,9 +1499,12 @@ LIGHT_SHADER_CODE
#endif
#define SAMPLE_SHADOW_TEXEL(p_shadow, p_pos, p_depth) step(p_depth, SHADOW_DEPTH(texture2D(p_shadow, p_pos)))
#define SAMPLE_SHADOW_TEXEL_PROJ(p_shadow, p_pos) step(p_pos.z, SHADOW_DEPTH(texture2DProj(p_shadow, p_pos)))
float sample_shadow(highp sampler2D shadow, highp vec4 spos) {
spos.xyz /= spos.w;
vec2 pos = spos.xy;
float depth = spos.z;
#ifdef SHADOW_MODE_PCF_13
// Soft PCF filter adapted from three.js:
@ -1509,9 +1512,6 @@ float sample_shadow(highp sampler2D shadow, highp vec4 spos) {
// This method actually uses 16 shadow samples. This soft filter isn't needed in GLES3
// as we can use hardware-based linear filtering instead of emulating it in the shader
// like we're doing here.
spos.xyz /= spos.w;
vec2 pos = spos.xy;
float depth = spos.z;
vec2 f = fract(pos * (1.0 / shadow_pixel_size) + 0.5);
pos -= f * shadow_pixel_size;
@ -1549,10 +1549,6 @@ float sample_shadow(highp sampler2D shadow, highp vec4 spos) {
#ifdef SHADOW_MODE_PCF_5
spos.xyz /= spos.w;
vec2 pos = spos.xy;
float depth = spos.z;
float avg = SAMPLE_SHADOW_TEXEL(shadow, pos, depth);
avg += SAMPLE_SHADOW_TEXEL(shadow, pos + vec2(shadow_pixel_size.x, 0.0), depth);
avg += SAMPLE_SHADOW_TEXEL(shadow, pos + vec2(-shadow_pixel_size.x, 0.0), depth);
@ -1562,9 +1558,9 @@ float sample_shadow(highp sampler2D shadow, highp vec4 spos) {
#endif
#if !defined(SHADOW_MODE_PCF_5) || !defined(SHADOW_MODE_PCF_13)
#if !defined(SHADOW_MODE_PCF_5) && !defined(SHADOW_MODE_PCF_13)
return SAMPLE_SHADOW_TEXEL_PROJ(shadow, spos);
return SAMPLE_SHADOW_TEXEL(shadow, pos, depth);
#endif
}