halbear/Terrain4J_Experimental_branch
halbear/Terrain4J_Experimental_branch
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i did a little memory optimisation (19GB of VRAM -> 2.6GB of VRAM), lost some FPS in vertex rendering as a result but i'll figure it out

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Halbear 2026-09-16 20:38:37 +01:00
parent bf9af81f38
commit ce7051d8ca
21 changed files with 766 additions and 592 deletions
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149
resources/EngineResources/shaders/packed_scene_vertex.glsl Normal file
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#version 450
layout(location = 0) out vec4 outPos;
layout(location = 1) out vec3 outNormal;
layout(location = 2) out vec3 outTangent;
layout(location = 3) out vec3 outBitangent;
layout(location = 4) out vec2 outTextCoords;
layout(location = 5) out mat4 viewMatrix;
layout(set = 0, binding = 0) uniform ProjUniform { mat4 matrix; } projUniform;
layout(set = 1, binding = 0) uniform ViewUniform { mat4 matrix; } viewUniform;
layout(set = 4, binding = 0) readonly buffer FaceBuffer {
uint faces[];
};
layout(push_constant) uniform pc {
vec4 ModelOffset;
vec4 Padding0;
vec4 Padding1;
vec4 Padding2;
} push_constants;
const uint TRI_TO_CORNER[6] = uint[6](0u, 1u, 2u, 0u, 2u, 3u);
const vec3 NORMALS[6] = vec3[6](
vec3( 0.0, 1.0, 0.0),
vec3( 0.0, -1.0, 0.0),
vec3( 1.0, 0.0, 0.0),
vec3(-1.0, 0.0, 0.0),
vec3( 0.0, 0.0, 1.0),
vec3( 0.0, 0.0, -1.0)
);
const vec3 TANGENTS[6] = vec3[6](
vec3( 1.0, 0.0, 0.0),
vec3( 1.0, 0.0, 0.0),
vec3( 0.0, 0.0, -1.0),
vec3( 0.0, 0.0, 1.0),
vec3( 1.0, 0.0, 0.0),
vec3(-1.0, 0.0, 0.0)
);
const vec3 BITANGENTS[6] = vec3[6](
vec3( 0.0, 0.0, 1.0),
vec3( 0.0, 0.0, -1.0),
vec3( 0.0, 1.0, 0.0),
vec3( 0.0, 1.0, 0.0),
vec3( 0.0, 1.0, 0.0),
vec3( 0.0, 1.0, 0.0)
);
const vec2 CORNER_UVS[16] = vec2[16](
vec2(0.5, 0.0),
vec2(0.5, 0.5),
vec2(1.0, 0.5),
vec2(1.0, 0.0),
vec2(0.0, 0.5),
vec2(0.0, 1.0),
vec2(0.5, 1.0),
vec2(0.5, 0.5),
vec2(0.5, 0.0),
vec2(0.5, 0.5),
vec2(1.0, 0.5),
vec2(1.0, 0.0),
vec2(0.5, 0.0),
vec2(0.5, 0.5),
vec2(1.0, 0.5),
vec2(1.0, 0.0)
);
vec3 buildFaceCornerPosition(uvec3 voxelPos, uint faceId, uint cornerIndex) {
vec3 p = vec3(voxelPos);
if (faceId == 0u) {
if (cornerIndex == 0u) return p + vec3(0.0, 1.0, 0.0);
if (cornerIndex == 1u) return p + vec3(0.0, 1.0, 1.0);
if (cornerIndex == 2u) return p + vec3(1.0, 1.0, 1.0);
return p + vec3(1.0, 1.0, 0.0);
}
if (faceId == 1u) {
if (cornerIndex == 0u) return p + vec3(0.0, 0.0, 0.0);
if (cornerIndex == 1u) return p + vec3(1.0, 0.0, 0.0);
if (cornerIndex == 2u) return p + vec3(1.0, 0.0, 1.0);
return p + vec3(0.0, 0.0, 1.0);
}
if (faceId == 2u) {
if (cornerIndex == 0u) return p + vec3(1.0, 0.0, 0.0);
if (cornerIndex == 1u) return p + vec3(1.0, 1.0, 0.0);
if (cornerIndex == 2u) return p + vec3(1.0, 1.0, 1.0);
return p + vec3(1.0, 0.0, 1.0);
}
if (faceId == 3u) {
if (cornerIndex == 0u) return p + vec3(0.0, 0.0, 0.0);
if (cornerIndex == 1u) return p + vec3(0.0, 0.0, 1.0);
if (cornerIndex == 2u) return p + vec3(0.0, 1.0, 1.0);
return p + vec3(0.0, 1.0, 0.0);
}
if (faceId == 4u) {
if (cornerIndex == 0u) return p + vec3(0.0, 0.0, 1.0);
if (cornerIndex == 1u) return p + vec3(1.0, 0.0, 1.0);
if (cornerIndex == 2u) return p + vec3(1.0, 1.0, 1.0);
return p + vec3(0.0, 1.0, 1.0);
}
if (cornerIndex == 0u) return p + vec3(0.0, 0.0, 0.0);
if (cornerIndex == 1u) return p + vec3(0.0, 1.0, 0.0);
if (cornerIndex == 2u) return p + vec3(1.0, 1.0, 0.0);
return p + vec3(1.0, 0.0, 0.0);
}
void main() {
viewMatrix = viewUniform.matrix;
uint faceRecordIndex = uint(gl_VertexIndex) / 6u;
uint triangleVertex = uint(gl_VertexIndex) % 6u;
uint cornerIndex = TRI_TO_CORNER[triangleVertex];
uint packedFace = faces[faceRecordIndex];
uint voxelX = packedFace & 0x1Fu;
uint voxelY = (packedFace >> 5u) & 0x1Fu;
uint voxelZ = (packedFace >> 10u) & 0x1Fu;
uint faceId = (packedFace >> 15u) & 0x7u;
uint matId = (packedFace >> 18u) & 0xFFu;
faceId = min(faceId, 5u);
matId = min(matId, 3u);
vec3 localPos = buildFaceCornerPosition(uvec3(voxelX, voxelY, voxelZ), faceId, cornerIndex);
vec3 worldPos = localPos + push_constants.ModelOffset.xyz * 16.0;
vec4 worldPosVec4 = vec4(worldPos, 1.0);
gl_Position = projUniform.matrix * viewUniform.matrix * worldPosVec4;
outPos = worldPosVec4;
outNormal = NORMALS[faceId];
outTangent = TANGENTS[faceId];
outBitangent = BITANGENTS[faceId];
outTextCoords = CORNER_UVS[cornerIndex + 4u * matId];
}