Mirrors/overte-lubosz
3
0
Fork 0
mirror of https://github.com/lubosz/overte.git synced 2025-04-08 14:42:19 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

remove old unused shaders

Browse source
This commit is contained in:
ZappoMan 2014-12-11 13:59:21 -08:00
parent 29672aec09
commit 208d3c8413
3 changed files with 0 additions and 282 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
interface/resources/shaders/passthrough.vert
View file

@ -1,21 +0,0 @@
#version 120
//
// passthrough.vert
// vertex shader
//
// Copyright 2013 High Fidelity, Inc.
//
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
attribute float voxelSizeIn;
varying float voxelSize;
void main(void) {
gl_FrontColor = gl_Color;
gl_Position = gl_Vertex; // don't call ftransform(), because we do projection in geometry shader
voxelSize = voxelSizeIn;
}

174
interface/resources/shaders/point_size.vert
View file

@ -1,174 +0,0 @@
#version 120
//
// point_size.vert
// vertex shader
//
// Copyright 2013 High Fidelity, Inc.
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
attribute float voxelSizeIn;
varying float voxelSize;
uniform float viewportWidth;
uniform float viewportHeight;
uniform vec3 cameraPosition;
// Bit codes for faces
const int NONE = 0;
const int RIGHT = 1;
const int LEFT = 2;
const int BOTTOM = 4;
const int BOTTOM_RIGHT = BOTTOM + RIGHT;
const int BOTTOM_LEFT = BOTTOM + LEFT;
const int TOP = 8;
const int TOP_RIGHT = TOP + RIGHT;
const int TOP_LEFT = TOP + LEFT;
const int NEAR = 16;
const int NEAR_RIGHT = NEAR + RIGHT;
const int NEAR_LEFT = NEAR + LEFT;
const int NEAR_BOTTOM = NEAR + BOTTOM;
const int NEAR_BOTTOM_RIGHT = NEAR + BOTTOM + RIGHT;
const int NEAR_BOTTOM_LEFT = NEAR + BOTTOM + LEFT;
const int NEAR_TOP = NEAR + TOP;
const int NEAR_TOP_RIGHT = NEAR + TOP + RIGHT;
const int NEAR_TOP_LEFT = NEAR + TOP + LEFT;
const int FAR = 32;
const int FAR_RIGHT = FAR + RIGHT;
const int FAR_LEFT = FAR + LEFT;
const int FAR_BOTTOM = FAR + BOTTOM;
const int FAR_BOTTOM_RIGHT = FAR + BOTTOM + RIGHT;
const int FAR_BOTTOM_LEFT = FAR + BOTTOM + LEFT;
const int FAR_TOP = FAR + TOP;
const int FAR_TOP_RIGHT = FAR + TOP + RIGHT;
const int FAR_TOP_LEFT = FAR + TOP + LEFT;
// If we know the position of the camera relative to the voxel, we can a priori know the vertices that make the visible hull
// polygon. This also tells us which two vertices are known to make the longest possible distance between any pair of these
// vertices for the projected polygon. This is a visibleFaces table based on this knowledge.
void main(void) {
// Note: the gl_Vertex in this case are in "world coordinates" meaning they've already been scaled to TREE_SCALE
// this is also true for voxelSizeIn.
vec4 bottomNearRight = gl_Vertex;
vec4 topFarLeft = (gl_Vertex + vec4(voxelSizeIn, voxelSizeIn, voxelSizeIn, 0.0));
int visibleFaces = NONE;
// In order to use our visibleFaces "table" (implemented as if statements) below, we need to encode the 6-bit code to
// orient camera relative to the 6 defining faces of the voxel. Based on camera position relative to the bottomNearRight
// corner and the topFarLeft corner, we can calculate which hull and therefore which two vertices are furthest apart
// linearly once projected
if (cameraPosition.x < bottomNearRight.x) {
visibleFaces += RIGHT;
}
if (cameraPosition.x > topFarLeft.x) {
visibleFaces += LEFT;
}
if (cameraPosition.y < bottomNearRight.y) {
visibleFaces += BOTTOM;
}
if (cameraPosition.y > topFarLeft.y) {
visibleFaces += TOP;
}
if (cameraPosition.z < bottomNearRight.z) {
visibleFaces += NEAR;
}
if (cameraPosition.z > topFarLeft.z) {
visibleFaces += FAR;
}
vec4 cornerAdjustOne;
vec4 cornerAdjustTwo;
if (visibleFaces == RIGHT) {
cornerAdjustOne = vec4(0,0,0,0) * voxelSizeIn;
cornerAdjustTwo = vec4(0,1,1,0) * voxelSizeIn;
} else if (visibleFaces == LEFT) {
cornerAdjustOne = vec4(1,0,0,0) * voxelSizeIn;
cornerAdjustTwo = vec4(1,1,1,0) * voxelSizeIn;
} else if (visibleFaces == BOTTOM) {
cornerAdjustOne = vec4(0,0,0,0) * voxelSizeIn;
cornerAdjustTwo = vec4(1,0,1,0) * voxelSizeIn;
} else if (visibleFaces == TOP) {
cornerAdjustOne = vec4(0,1,0,0) * voxelSizeIn;
cornerAdjustTwo = vec4(1,1,1,0) * voxelSizeIn;
} else if (visibleFaces == NEAR) {
cornerAdjustOne = vec4(0,0,0,0) * voxelSizeIn;
cornerAdjustTwo = vec4(1,1,0,0) * voxelSizeIn;
} else if (visibleFaces == FAR) {
cornerAdjustOne = vec4(0,0,1,0) * voxelSizeIn;
cornerAdjustTwo = vec4(1,1,1,0) * voxelSizeIn;
} else if (visibleFaces == NEAR_BOTTOM_LEFT ||
visibleFaces == FAR_TOP ||
visibleFaces == FAR_TOP_RIGHT) {
cornerAdjustOne = vec4(0,1,0,0) * voxelSizeIn;
cornerAdjustTwo = vec4(1,0,1,0) * voxelSizeIn;
} else if (visibleFaces == FAR_TOP_LEFT ||
visibleFaces == NEAR_RIGHT ||
visibleFaces == NEAR_BOTTOM ||
visibleFaces == NEAR_BOTTOM_RIGHT) {
cornerAdjustOne = vec4(0,0,1,0) * voxelSizeIn;
cornerAdjustTwo = vec4(1,1,0,0) * voxelSizeIn;
} else if (visibleFaces == NEAR_TOP_RIGHT ||
visibleFaces == FAR_LEFT ||
visibleFaces == FAR_BOTTOM_LEFT ||
visibleFaces == BOTTOM_RIGHT ||
visibleFaces == TOP_LEFT) {
cornerAdjustOne = vec4(1,0,0,0) * voxelSizeIn;
cornerAdjustTwo = vec4(0,1,1,0) * voxelSizeIn;
// Everything else...
//} else if (visibleFaces == BOTTOM_LEFT ||
// visibleFaces == TOP_RIGHT ||
// visibleFaces == NEAR_LEFT ||
// visibleFaces == FAR_RIGHT ||
// visibleFaces == NEAR_TOP ||
// visibleFaces == NEAR_TOP_LEFT ||
// visibleFaces == FAR_BOTTOM ||
// visibleFaces == FAR_BOTTOM_RIGHT) {
} else {
cornerAdjustOne = vec4(0,0,0,0) * voxelSizeIn;
cornerAdjustTwo = vec4(1,1,1,0) * voxelSizeIn;
}
// Determine our corners
vec4 cornerOne = gl_Vertex + cornerAdjustOne;
vec4 cornerTwo = gl_Vertex + cornerAdjustTwo;
// Find their model view projections
vec4 cornerOneMVP = gl_ModelViewProjectionMatrix * cornerOne;
vec4 cornerTwoMVP = gl_ModelViewProjectionMatrix * cornerTwo;
// Map to x, y screen coordinates
vec2 cornerOneScreen = vec2(cornerOneMVP.x / cornerOneMVP.w, cornerOneMVP.y / cornerOneMVP.w);
if (cornerOneMVP.w < 0) {
cornerOneScreen.x = -cornerOneScreen.x;
cornerOneScreen.y = -cornerOneScreen.y;
}
vec2 cornerTwoScreen = vec2(cornerTwoMVP.x / cornerTwoMVP.w, cornerTwoMVP.y / cornerTwoMVP.w);
if (cornerTwoMVP.w < 0) {
cornerTwoScreen.x = -cornerTwoScreen.x;
cornerTwoScreen.y = -cornerTwoScreen.y;
}
// Find the distance between them in pixels
float voxelScreenWidth = abs(cornerOneScreen.x - cornerTwoScreen.x) * viewportWidth / 2.0;
float voxelScreenHeight = abs(cornerOneScreen.y - cornerTwoScreen.y) * viewportHeight / 2.0;
float voxelScreenLength = sqrt(voxelScreenHeight * voxelScreenHeight + voxelScreenWidth * voxelScreenWidth);
// Find the center of the voxel
vec4 centerVertex = gl_Vertex;
float halfSizeIn = voxelSizeIn / 2;
centerVertex += vec4(halfSizeIn, halfSizeIn, halfSizeIn, 0.0);
vec4 center = gl_ModelViewProjectionMatrix * centerVertex;
// Finally place the point at the center of the voxel, with a size equal to the maximum screen length
gl_Position = center;
gl_PointSize = voxelScreenLength;
gl_FrontColor = gl_Color;
}

87
interface/resources/shaders/voxel.geom
View file

@ -1,87 +0,0 @@
#version 120
#extension GL_ARB_geometry_shader4 : enable
//
// voxel.geom
// geometry shader
//
// Copyright 2013 High Fidelity, Inc.
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
//
// VOXEL GEOMETRY SHADER
//
// Input: gl_VerticesIn/gl_PositionIn
// GL_POINTS
// Assumes vertex shader has not transformed coordinates
// Each gl_PositionIn is the corner of voxel
// varying voxelSize - which is the voxel size
//
// Note: In vertex shader doesn't do any transform. Therefore passing the 3D world coordinates xyz to us
//
// Output: GL_TRIANGLE_STRIP
//
// Issues:
// how do we need to handle lighting of these colors??
// how do we handle normals?
// check for size=0 and don't output the primitive
//
varying in float voxelSize[1];
const int VERTICES_PER_FACE = 4;
const int COORD_PER_VERTEX = 3;
const int COORD_PER_FACE = COORD_PER_VERTEX * VERTICES_PER_FACE;
void faceOfVoxel(vec4 corner, float scale, float[COORD_PER_FACE] facePoints, vec4 color, vec4 normal) {
for (int v = 0; v < VERTICES_PER_FACE; v++ ) {
vec4 vertex = corner;
for (int c = 0; c < COORD_PER_VERTEX; c++ ) {
int cIndex = c + (v * COORD_PER_VERTEX);
vertex[c] += (facePoints[cIndex] * scale);
}
gl_FrontColor = color * (gl_LightModel.ambient + gl_LightSource[0].ambient +
gl_LightSource[0].diffuse * max(0.0, dot(normal, gl_LightSource[0].position)));
gl_Position = gl_ModelViewProjectionMatrix * vertex;
EmitVertex();
}
EndPrimitive();
}
void main() {
//increment variable
int i;
vec4 corner;
float scale;
float bottomFace[COORD_PER_FACE] = float[COORD_PER_FACE]( 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1 );
float topFace[COORD_PER_FACE] = float[COORD_PER_FACE]( 1, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1 );
float rightFace[COORD_PER_FACE] = float[COORD_PER_FACE]( 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1 );
float leftFace[COORD_PER_FACE] = float[COORD_PER_FACE]( 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1 );
float frontFace[COORD_PER_FACE] = float[COORD_PER_FACE]( 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0 );
float backFace[COORD_PER_FACE] = float[COORD_PER_FACE]( 1, 0, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1 );
vec4 bottomNormal = vec4(0.0, -1, 0.0, 0.0);
vec4 topNormal = vec4(0.0, 1, 0.0, 0.0);
vec4 rightNormal = vec4( -1, 0.0, 0.0, 0.0);
vec4 leftNormal = vec4( 1, 0.0, 0.0, 0.0);
vec4 frontNormal = vec4(0.0, 0.0, -1, 0.0);
vec4 backNormal = vec4(0.0, 0.0, 1, 0.0);
for(i = 0; i < gl_VerticesIn; i++) {
corner = gl_PositionIn[i];
scale = voxelSize[i];
faceOfVoxel(corner, scale, bottomFace, gl_FrontColorIn[i], bottomNormal);
faceOfVoxel(corner, scale, topFace, gl_FrontColorIn[i], topNormal );
faceOfVoxel(corner, scale, rightFace, gl_FrontColorIn[i], rightNormal );
faceOfVoxel(corner, scale, leftFace, gl_FrontColorIn[i], leftNormal );
faceOfVoxel(corner, scale, frontFace, gl_FrontColorIn[i], frontNormal );
faceOfVoxel(corner, scale, backFace, gl_FrontColorIn[i], backNormal );
}
}