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Port shadow shaders to work with OpenGL3

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Co-authored-by: sfan5 <sfan5@live.de>
This commit is contained in:
PtiLuky
2025-10-13 11:04:07 +02:00
committed by sfan5
parent 5e23e478b1
commit d834c45d1c
13 changed files with 128 additions and 264 deletions
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8
client/shaders/shadow_shaders/pass1_fragment.glsl → client/shaders/shadow/pass1/opengl_fragment.glsl
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@@ -1,9 +1,15 @@
uniform sampler2D ColorMapSampler;
varying vec4 tPos;
#ifdef GL_ES
varying mediump vec2 varTexCoord;
#else
centroid varying vec2 varTexCoord;
#endif
void main()
{
vec4 col = texture2D(ColorMapSampler, gl_TexCoord[0].st);
vec4 col = texture2D(ColorMapSampler, varTexCoord);
if (col.a < 0.70)
discard;

10
client/shaders/shadow_shaders/pass1_vertex.glsl → client/shaders/shadow/pass1/opengl_vertex.glsl
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@@ -6,6 +6,12 @@ uniform float xyPerspectiveBias0;
uniform float xyPerspectiveBias1;
uniform float zPerspectiveBias;
#ifdef GL_ES
varying mediump vec2 varTexCoord;
#else
centroid varying vec2 varTexCoord;
#endif
vec4 getRelativePosition(in vec4 position)
{
vec2 l = position.xy - CameraPos.xy;
@@ -34,10 +40,10 @@ vec4 applyPerspectiveDistortion(in vec4 position)
void main()
{
vec4 pos = LightMVP * gl_Vertex;
vec4 pos = LightMVP * inVertexPosition;
tPos = applyPerspectiveDistortion(pos);
gl_Position = vec4(tPos.xyz, 1.0);
gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
varTexCoord = (mTexture * vec4(inTexCoord0.xy, 0.0, 1.0)).xy;
}

8
client/shaders/shadow_shaders/pass1_trans_fragment.glsl → client/shaders/shadow/pass1_trans/opengl_fragment.glsl
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@@ -1,6 +1,12 @@
uniform sampler2D ColorMapSampler;
varying vec4 tPos;
#ifdef GL_ES
varying mediump vec2 varTexCoord;
#else
centroid varying vec2 varTexCoord;
#endif
#ifdef COLORED_SHADOWS
varying vec3 varColor;
@@ -20,7 +26,7 @@ const vec3 black = vec3(0.0);
void main()
{
vec4 col = texture2D(ColorMapSampler, gl_TexCoord[0].st);
vec4 col = texture2D(ColorMapSampler, varTexCoord);
#ifndef COLORED_SHADOWS
if (col.a < 0.5)
discard;

14
client/shaders/shadow_shaders/pass1_trans_vertex.glsl → client/shaders/shadow/pass1_trans/opengl_vertex.glsl
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@@ -9,6 +9,12 @@ uniform float xyPerspectiveBias0;
uniform float xyPerspectiveBias1;
uniform float zPerspectiveBias;
#ifdef GL_ES
varying mediump vec2 varTexCoord;
#else
centroid varying vec2 varTexCoord;
#endif
vec4 getRelativePosition(in vec4 position)
{
vec2 l = position.xy - CameraPos.xy;
@@ -37,14 +43,14 @@ vec4 applyPerspectiveDistortion(in vec4 position)
void main()
{
vec4 pos = LightMVP * gl_Vertex;
vec4 pos = LightMVP * inVertexPosition;
tPos = applyPerspectiveDistortion(LightMVP * gl_Vertex);
tPos = applyPerspectiveDistortion(pos);
gl_Position = vec4(tPos.xyz, 1.0);
gl_TexCoord[0].st = gl_MultiTexCoord0.st;
varTexCoord = inTexCoord0.xy;
#ifdef COLORED_SHADOWS
varColor = gl_Color.rgb;
varColor = inVertexColor.rgb;
#endif
}

19
client/shaders/shadow_shaders/pass2_fragment.glsl → client/shaders/shadow/pass2/opengl_fragment.glsl
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@@ -4,20 +4,25 @@ uniform sampler2D ShadowMapClientMapTraslucent;
#endif
uniform sampler2D ShadowMapSamplerdynamic;
void main() {
#ifdef GL_ES
varying mediump vec2 varTexCoord;
#else
centroid varying vec2 varTexCoord;
#endif
void main()
{
#ifdef COLORED_SHADOWS
vec2 first_depth = texture2D(ShadowMapClientMap, gl_TexCoord[0].st).rg;
vec2 depth_splitdynamics = vec2(texture2D(ShadowMapSamplerdynamic, gl_TexCoord[2].st).r, 0.0);
vec2 first_depth = texture2D(ShadowMapClientMap, varTexCoord).rg;
vec2 depth_splitdynamics = vec2(texture2D(ShadowMapSamplerdynamic, varTexCoord).r, 0.0);
if (first_depth.r > depth_splitdynamics.r)
first_depth = depth_splitdynamics;
vec2 depth_color = texture2D(ShadowMapClientMapTraslucent, gl_TexCoord[1].st).rg;
vec2 depth_color = texture2D(ShadowMapClientMapTraslucent, varTexCoord).rg;
gl_FragColor = vec4(first_depth.r, first_depth.g, depth_color.r, depth_color.g);
#else
float first_depth = texture2D(ShadowMapClientMap, gl_TexCoord[0].st).r;
float depth_splitdynamics = texture2D(ShadowMapSamplerdynamic, gl_TexCoord[2].st).r;
float first_depth = texture2D(ShadowMapClientMap, varTexCoord).r;
float depth_splitdynamics = texture2D(ShadowMapSamplerdynamic, varTexCoord).r;
first_depth = min(first_depth, depth_splitdynamics);
gl_FragColor = vec4(first_depth, 0.0, 0.0, 1.0);
#endif
}

12
client/shaders/shadow/pass2/opengl_vertex.glsl Normal file
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@@ -0,0 +1,12 @@
#ifdef GL_ES
varying mediump vec2 varTexCoord;
#else
centroid varying vec2 varTexCoord;
#endif
void main()
{
vec4 uv = vec4(inVertexPosition.xyz, 1.0) * 0.5 + 0.5;
varTexCoord = uv.st;
gl_Position = vec4(inVertexPosition.xyz, 1.0);
}

9
client/shaders/shadow_shaders/pass2_vertex.glsl
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@@ -1,9 +0,0 @@
void main()
{
vec4 uv = vec4(gl_Vertex.xyz, 1.0) * 0.5 + 0.5;
gl_TexCoord[0] = uv;
gl_TexCoord[1] = uv;
gl_TexCoord[2] = uv;
gl_Position = vec4(gl_Vertex.xyz, 1.0);
}