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OpenGL: Add multi-pass transparency

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This commit is contained in:
LRFLEW
2017-10-21 21:04:24 -05:00
committed by Michał Janiszewski
parent d3d41ea724
commit aac1c59714
16 changed files with 347 additions and 60 deletions
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2
data/shaders/applytransparency.frag
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@@ -17,7 +17,7 @@ void main()
uint transparent = texture(uTransparentTex, fTextureCoordinate).r;
float transparentDepth = texture(uTransparentDepth, fTextureCoordinate).r;
if (transparentDepth > opaqueDepth)
if (opaqueDepth <= transparentDepth)
{
transparent = 0u;
}

5
data/shaders/drawline.vert
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@@ -18,9 +18,8 @@ void main()
{
vec2 pos = clamp(vVertMat * vBounds, vClip.xy, vClip.zw);
// Transform screen coordinates to viewport
pos.x = (pos.x * (2.0 / uScreenSize.x)) - 1.0;
pos.y = (pos.y * (2.0 / uScreenSize.y)) - 1.0;
// Transform screen coordinates to viewport coordinates
pos = (pos * (2.0 / uScreenSize)) - 1.0;
pos.y *= -1;
float depth = 1.0 - (vDepth + 1) * DEPTH_INCREMENT;

13
data/shaders/drawrect.frag
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@@ -8,6 +8,9 @@ const int FLAG_CROSS_HATCH = (1 << 4);
uniform usampler2DArray uTexture;
uniform usampler2DRect uPaletteTex;
uniform sampler2D uPeelingTex;
uniform bool uPeeling;
flat in int fFlags;
flat in uint fColour;
in vec3 fTexColour;
@@ -15,11 +18,21 @@ in vec3 fTexMask;
flat in vec3 fPalettes;
in vec2 fPosition;
in vec3 fPeelPos;
out uint oColour;
void main()
{
if (uPeeling)
{
float peel = texture(uPeelingTex, fPeelPos.xy).r;
if (peel == 0.0 || fPeelPos.z >= peel)
{
discard;
}
}
uint texel;
if ((fFlags & FLAG_NO_TEXTURE) == 0)
{

11
data/shaders/drawrect.vert
View File

@@ -20,6 +20,7 @@ in mat4x2 vVertMat;
in vec2 vVertVec;
out vec2 fPosition;
out vec3 fPeelPos;
flat out int fFlags;
flat out uint fColour;
out vec3 fTexColour;
@@ -36,15 +37,17 @@ void main()
fPosition = pos;
// Transform screen coordinates to viewport
pos.x = (pos.x * (2.0 / uScreenSize.x)) - 1.0;
pos.y = (pos.y * (2.0 / uScreenSize.y)) - 1.0;
pos.y *= -1;
// Transform screen coordinates to texture coordinates
float depth = 1.0 - (vDepth + 1) * DEPTH_INCREMENT;
pos = pos / uScreenSize;
pos.y = pos.y * -1.0 + 1.0;
fPeelPos = vec3(pos, depth * 0.5 + 0.5);
fFlags = vFlags;
fColour = vColour;
fPalettes = vec3(vPalettes);
// Transform texture coordinates to viewport coordinates
pos = pos * 2.0 - 1.0;
gl_Position = vec4(pos, depth, 1.0);
}