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Properly render chunks while using normal meshing

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This commit is contained in:
mrkubax10
2023-11-10 10:44:28 +01:00
parent 50241f957e
commit e830bf2654
6 changed files with 91 additions and 113 deletions
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6
shaders/gl/object_fragment.glsl
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@@ -2,10 +2,10 @@
out vec4 out_frag_color;
in vec3 out_pos;
in vec2 out_uv;
uniform vec4 uniform_color;
uniform sampler2D uniform_texture_num;
void main() {
out_frag_color = vec4(out_pos.x, out_pos.y, out_pos.z, 1);
out_frag_color = texture(uniform_texture_num, out_uv);
}

5
shaders/gl/object_vertex.glsl
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@@ -1,7 +1,8 @@
#version 330 core
layout (location = 0) in vec3 in_pos;
layout (location = 1) in vec2 in_uv;
out vec3 out_pos;
out vec2 out_uv;
uniform mat4 uniform_model;
uniform mat4 uniform_view;
@@ -9,5 +10,5 @@ uniform mat4 uniform_projection;
void main() {
gl_Position = uniform_projection * uniform_view * uniform_model * vec4(in_pos, 1.0f);
out_pos = in_pos;
out_uv = in_uv;
}

9
shaders/gl2/object_fragment.glsl Normal file
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@@ -0,0 +1,9 @@
#version 110
varying vec2 out_uv;
uniform sampler2D uniform_texture_num;
void main() {
gl_FragColor = texture2D(uniform_texture_num, out_uv);
}

14
shaders/gl2/object_vertex.glsl Normal file
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@@ -0,0 +1,14 @@
#version 110
attribute vec3 in_pos;
attribute vec2 in_uv;
varying vec2 out_uv;
uniform mat4 uniform_projection;
uniform mat4 uniform_view;
uniform mat4 uniform_model;
void main() {
gl_Position = uniform_projection * uniform_view * uniform_model * vec4(in_pos, 1.0);
out_uv = in_uv;
}

124
src/game/engine/normal_meshing.cpp
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@@ -24,6 +24,7 @@ SOFTWARE.
#include "game/engine/normal_meshing.hpp"
#include "common/logger.hpp"
#include "common/math/vector.hpp"
#include "common/world/chunk.hpp"
@@ -43,10 +44,10 @@ static void push_uvs(float texture_unit_size, unsigned texture_index, std::vecto
output_uvs.push_back(texture_unit_size*texture_index);
output_uvs.push_back(1.0f);
output_uvs.push_back(texture_unit_size*texture_index+1.0f);
output_uvs.push_back(texture_unit_size*texture_index+texture_unit_size);
output_uvs.push_back(1.0f);
output_uvs.push_back(texture_unit_size*texture_index+1.0f);
output_uvs.push_back(texture_unit_size*texture_index+texture_unit_size);
output_uvs.push_back(0.0f);
}
@@ -65,136 +66,89 @@ void polygun::engine::normal_meshing::generate_mesh(const world::Chunk& chunk, f
const bool front_node = (z<world::Chunk::CHUNK_SIZE-1 && chunk.get_node(math::Vector3i{x, y, z+1})>0);
const bool bottom_node = (y>0 && chunk.get_node(math::Vector3i{x, y-1, z})>0);
const bool top_node = (y<world::Chunk::CHUNK_SIZE-1 && chunk.get_node(math::Vector3i{x, y+1, z})>0);
unsigned side_vertices_indices[8] = {0};
if(!left_node) {
side_vertices_indices[0] = vertex_count++;
output_vertices.push_back(x);
output_vertices.push_back(y+1);
output_vertices.push_back(z);
side_vertices_indices[1] = vertex_count++;
output_vertices.push_back(x);
output_vertices.push_back(y);
output_vertices.push_back(z);
side_vertices_indices[2] = vertex_count++;
output_vertices.push_back(x);
output_vertices.push_back(y);
output_vertices.push_back(z+1);
side_vertices_indices[3] = vertex_count++;
output_vertices.push_back(x);
output_vertices.push_back(y+1);
output_vertices.push_back(z+1);
vertex_count+=4;
push_indices(vertex_count, output_indices);
push_uvs(node_id, texture_unit_size, output_uvs);
push_uvs(texture_unit_size, node_id-1, output_uvs);
}
if(!right_node) {
side_vertices_indices[4] = vertex_count++;
output_vertices.push_back(x+1);
output_vertices.push_back(y+1);
output_vertices.push_back(z);
side_vertices_indices[5] = vertex_count++;
output_vertices.push_back(x+1);
output_vertices.push_back(y);
output_vertices.push_back(z);
side_vertices_indices[6] = vertex_count++;
output_vertices.push_back(x+1);
output_vertices.push_back(y);
output_vertices.push_back(z+1);
side_vertices_indices[7] = vertex_count++;
output_vertices.push_back(x+1);
output_vertices.push_back(y+1);
output_vertices.push_back(z+1);
vertex_count+=4;
push_indices(vertex_count, output_indices);
push_uvs(node_id, texture_unit_size, output_uvs);
push_uvs(texture_unit_size, node_id-1, output_uvs);
}
if(!back_node) {
if(left_node) {
side_vertices_indices[0] = vertex_count++;
output_vertices.push_back(x);
output_vertices.push_back(y+1);
output_vertices.push_back(z);
output_uvs.push_back(texture_unit_size*node_id);
output_uvs.push_back(0.0f);
output_vertices.push_back(x);
output_vertices.push_back(y+1);
output_vertices.push_back(z);
side_vertices_indices[1] = vertex_count++;
output_vertices.push_back(x);
output_vertices.push_back(y);
output_vertices.push_back(z);
output_uvs.push_back(texture_unit_size*node_id);
output_uvs.push_back(1.0f);
}
output_vertices.push_back(x);
output_vertices.push_back(y);
output_vertices.push_back(z);
output_indices.push_back(side_vertices_indices[0]);
output_indices.push_back(side_vertices_indices[1]);
output_vertices.push_back(x+1);
output_vertices.push_back(y);
output_vertices.push_back(z);
if(right_node) {
side_vertices_indices[4] = vertex_count++;
output_vertices.push_back(x+1);
output_vertices.push_back(y+1);
output_vertices.push_back(z);
output_uvs.push_back(texture_unit_size*node_id+1.0f);
output_uvs.push_back(1.0f);
output_vertices.push_back(x+1);
output_vertices.push_back(y+1);
output_vertices.push_back(z);
side_vertices_indices[5] = vertex_count++;
output_vertices.push_back(x+1);
output_vertices.push_back(y);
output_vertices.push_back(z);
output_uvs.push_back(texture_unit_size*node_id+1.0f);
output_uvs.push_back(0.0f);
}
output_indices.push_back(side_vertices_indices[5]);
output_indices.push_back(side_vertices_indices[5]);
output_indices.push_back(side_vertices_indices[0]);
output_indices.push_back(side_vertices_indices[4]);
vertex_count+=4;
push_indices(vertex_count, output_indices);
push_uvs(texture_unit_size, node_id-1, output_uvs);
}
if(!front_node) {
if(left_node) {
side_vertices_indices[2] = vertex_count++;
output_vertices.push_back(x);
output_vertices.push_back(y);
output_vertices.push_back(z+1);
output_uvs.push_back(texture_unit_size*node_id);
output_uvs.push_back(0.0f);
output_vertices.push_back(x);
output_vertices.push_back(y);
output_vertices.push_back(z+1);
side_vertices_indices[3] = vertex_count++;
output_vertices.push_back(x);
output_vertices.push_back(y+1);
output_vertices.push_back(z+1);
output_uvs.push_back(texture_unit_size*node_id);
output_uvs.push_back(1.0f);
}
output_vertices.push_back(x);
output_vertices.push_back(y+1);
output_vertices.push_back(z+1);
output_indices.push_back(side_vertices_indices[3]);
output_indices.push_back(side_vertices_indices[2]);
output_vertices.push_back(x+1);
output_vertices.push_back(y+1);
output_vertices.push_back(z+1);
if(right_node) {
side_vertices_indices[6] = vertex_count++;
output_vertices.push_back(x+1);
output_vertices.push_back(y);
output_vertices.push_back(z+1);
output_uvs.push_back(texture_unit_size*node_id+1.0f);
output_uvs.push_back(1.0f);
output_vertices.push_back(x+1);
output_vertices.push_back(y);
output_vertices.push_back(z+1);
side_vertices_indices[7] = vertex_count++;
output_vertices.push_back(x+1);
output_vertices.push_back(y+1);
output_vertices.push_back(z+1);
output_uvs.push_back(texture_unit_size*node_id+1.0f);
output_uvs.push_back(0.0f);
}
output_indices.push_back(side_vertices_indices[6]);
output_indices.push_back(side_vertices_indices[6]);
output_indices.push_back(side_vertices_indices[3]);
output_indices.push_back(side_vertices_indices[7]);
vertex_count+=4;
push_indices(vertex_count, output_indices);
push_uvs(texture_unit_size, node_id-1, output_uvs);
}
if(!bottom_node) {
output_vertices.push_back(x);
@@ -215,7 +169,7 @@ void polygun::engine::normal_meshing::generate_mesh(const world::Chunk& chunk, f
vertex_count+=4;
push_indices(vertex_count, output_indices);
push_uvs(node_id, texture_unit_size, output_uvs);
push_uvs(texture_unit_size, node_id-1, output_uvs);
}
if(!top_node) {
output_vertices.push_back(x);
@@ -236,7 +190,7 @@ void polygun::engine::normal_meshing::generate_mesh(const world::Chunk& chunk, f
vertex_count+=4;
push_indices(vertex_count, output_indices);
push_uvs(node_id, texture_unit_size, output_uvs);
push_uvs(texture_unit_size, node_id-1, output_uvs);
}
}
}

2
src/game/engine/texture_atlas.cpp
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@@ -103,6 +103,6 @@ void TextureAtlas::construct_thread_func() {
release();
delete[] surfaces;
m_texture_unit_size = static_cast<float>(max_texture_width)/static_cast<float>(max_texture_width)*surface_count;
m_texture_unit_size = static_cast<float>(max_texture_width)/(static_cast<float>(max_texture_width)*surface_count);
m_atlas_updated = true;
}