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Pass depth scale factors to vertex shaders.

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This commit is contained in:
Paul Chote
2015-10-01 18:55:54 +01:00
parent c00ef40151
commit dabea59b7d
7 changed files with 61 additions and 19 deletions
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7
glsl/rgba.vert
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@@ -1,5 +1,5 @@
uniform vec2 Scroll;
uniform vec2 r1, r2;
uniform vec3 Scroll;
uniform vec3 r1, r2;
attribute vec4 aVertexPosition;
attribute vec4 aVertexTexCoord;
@@ -7,7 +7,6 @@ varying vec4 vTexCoord;
void main()
{
vec2 p = (aVertexPosition.xy - Scroll.xy)*r1 + r2;
gl_Position = vec4(p.x,p.y,0,1);
gl_Position = vec4((aVertexPosition.xyz - Scroll.xyz) * r1 + r2, 1);
vTexCoord = aVertexTexCoord;
}

22
glsl/shp.frag
View File

@@ -1,6 +1,7 @@
uniform sampler2D DiffuseTexture, Palette;
uniform bool EnableDepthPreview;
uniform float DepthTextureScale;
varying vec4 vTexCoord;
varying vec4 vChannelMask;
@@ -17,9 +18,24 @@ void main()
discard;
if (EnableDepthPreview && length(vDepthMask) > 0.0)
{
float depth = dot(x, vDepthMask);
gl_FragColor = vec4(depth, depth, depth, 1);
{
if (abs(DepthTextureScale) > 0.0)
{
// Preview vertex aware depth
float depth = gl_FragCoord.z + DepthTextureScale * dot(x, vDepthMask);
// Convert to window coords
depth = 0.5 * depth + 0.5;
// Front of the depth buffer is at 0, but we want to render it as bright
gl_FragColor = vec4(vec3(1.0 - depth), 1.0);
}
else
{
// Preview boring sprite-only depth
float depth = dot(x, vDepthMask);
gl_FragColor = vec4(depth, depth, depth, 1.0);
}
}
else
gl_FragColor = c;

7
glsl/shp.vert
View File

@@ -1,5 +1,5 @@
uniform vec2 Scroll;
uniform vec2 r1,r2; // matrix elements
uniform vec3 Scroll;
uniform vec3 r1, r2;
attribute vec4 aVertexPosition;
attribute vec4 aVertexTexCoord;
@@ -36,8 +36,7 @@ vec4 DecodeDepthChannelMask(float x)
void main()
{
vec2 p = (aVertexPosition.xy - Scroll.xy) * r1 + r2;
gl_Position = vec4(p.x,p.y,0,1);
gl_Position = vec4((aVertexPosition.xyz - Scroll.xyz) * r1 + r2, 1);
vTexCoord = aVertexTexCoord;
vChannelMask = DecodeChannelMask(aVertexTexCoord.w);
vDepthMask = DecodeDepthChannelMask(aVertexTexCoord.w);