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work on super basic grass plane rendering

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This commit is contained in:
Tuomas Katajisto 2025-09-16 22:59:22 +03:00
parent 0c5b0e9249
commit 726a43370e
9 changed files with 951 additions and 12 deletions
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1
game/game.jai
View File

@ -14,4 +14,5 @@ game_tick :: () {
game_draw :: () { game_draw :: () {
draw_sky(*cam); draw_sky(*cam);
draw_ground_plane(*cam);
} }

1
src/editor/level_editor.jai
View File

@ -263,6 +263,7 @@ tick_level_editor :: () {
draw_level_editor :: () { draw_level_editor :: () {
draw_sky(*get_level_editor_camera(), *world.conf); draw_sky(*get_level_editor_camera(), *world.conf);
draw_ground_plane(*get_level_editor_camera(), *world.conf);
cam := get_level_editor_camera(); cam := get_level_editor_camera();
mvp := create_viewproj(*cam); mvp := create_viewproj(*cam);

51
src/pipelines.jai
View File

@ -18,8 +18,12 @@ gPipelines : struct {
// Sky rendering. // Sky rendering.
sky : Pipeline_Binding; sky : Pipeline_Binding;
// Renders sets of triles
trile : Pipeline_Binding; trile : Pipeline_Binding;
// Renders the ground plane.
plane : Pipeline_Binding;
} }
create_pipelines :: () { create_pipelines :: () {
@ -27,6 +31,7 @@ create_pipelines :: () {
create_trixel_pipeline(); create_trixel_pipeline();
create_trile_pipeline(); create_trile_pipeline();
create_sky_pipeline(); create_sky_pipeline();
create_plane_pipeline();
} }
TRIXEL_SIZE_HALF : float : 1.0/32.0; TRIXEL_SIZE_HALF : float : 1.0/32.0;
@ -276,6 +281,52 @@ create_sky_pipeline :: () {
gPipelines.sky.bind.vertex_buffers[0] = sg_make_buffer(*vbuffer); gPipelines.sky.bind.vertex_buffers[0] = sg_make_buffer(*vbuffer);
} }
create_plane_pipeline :: () {
pipeline: sg_pipeline_desc;
shader_desc := plane_shader_desc(sg_query_backend());
pipeline.shader = sg_make_shader(*shader_desc);
pipeline.layout.buffers[0].stride = 4*3;
pipeline.layout.attrs[ATTR_plane_position] = .{ format = .FLOAT3, buffer_index = 0 };
pipeline.index_type = .UINT16;
pipeline.depth = .{
write_enabled = true,
compare = .LESS_EQUAL,
};
color_state := sg_color_target_state.{
pixel_format = .RGBA8,
blend = .{
enabled = true,
src_factor_rgb = .SRC_ALPHA,
dst_factor_rgb = .ONE_MINUS_SRC_ALPHA
}
};
vertices: [4]Vector3 = .[
.{-1.0, 0.0, -1.0},
.{ 1.0, 0.0, -1.0},
.{ 1.0, 0.0, 1.0},
.{-1.0, 0.0, 1.0},
];
indices: [6]u16 = .[
0, 1, 2,
0, 2, 3,
];
pipeline.color_count = 1;
pipeline.colors[0] = color_state;
gPipelines.plane.pipeline = sg_make_pipeline(*pipeline);
ibuffer := sg_buffer_desc.{ type = .INDEXBUFFER, data = .{ ptr = indices.data, size = 6 * 2 } };
vbuffer := sg_buffer_desc.{ data = .{ ptr = vertices.data, size = 4 * 3 * 4 } };
gPipelines.plane.bind.index_buffer = sg_make_buffer(*ibuffer);
gPipelines.plane.bind.vertex_buffers[0] = sg_make_buffer(*vbuffer);
}
create_arbtri_pipeline :: () { create_arbtri_pipeline :: () {
pipeline: sg_pipeline_desc; pipeline: sg_pipeline_desc;
shader_desc := triangle_shader_desc(sg_query_backend()); shader_desc := triangle_shader_desc(sg_query_backend());

17
src/rendering/groundplane.jai Normal file
View File

@ -0,0 +1,17 @@
draw_ground_plane :: (cam: *Camera, worldConfig: *World_Config = null) {
mvp := create_viewproj(cam);
vs_params : Plane_Vs_Params;
world_conf : Plane_World_Config;
wc : *World_Config = ifx worldConfig == null then *(World_Config.{}) else worldConfig;
world_config_to_shader_type(wc, *world_conf);
vs_params.mvp = mvp.floats;
sg_apply_pipeline(gPipelines.plane.pipeline);
sg_apply_bindings(*gPipelines.plane.bind);
sg_apply_uniforms(UB_plane_vs_params, *(sg_range.{ ptr = *vs_params, size = size_of(type_of(vs_params)) }));
sg_apply_uniforms(UB_plane_world_config, *(sg_range.{ptr = *world_conf, size = size_of(type_of(world_conf))}));
sg_draw(0, 6, 10);
}

1
src/rendering/rendering.jai
View File

@ -1 +1,2 @@
#load "groundplane.jai";
#load "sky.jai"; #load "sky.jai";

781
src/shaders/jai/shader_plane.jai Normal file
View File

@ -0,0 +1,781 @@
/*
#version:1# (machine generated, don't edit!)
Generated by sokol-shdc (https://github.com/floooh/sokol-tools)
Cmdline:
sokol-shdc -i shader_plane.glsl -o ./jai/shader_plane.jai -l glsl430:glsl300es:metal_macos -f sokol_jai
Overview:
=========
Shader program: 'plane':
Get shader desc: plane_shader_desc(sg_query_backend())
Vertex Shader: vs_plane
Fragment Shader: fs_plane
Attributes:
ATTR_plane_position => 0
Bindings:
Uniform block 'plane_vs_params':
Jai struct: Plane_Vs_Params
Bind slot: UB_plane_vs_params => 0
Uniform block 'plane_world_config':
Jai struct: Plane_World_Config
Bind slot: UB_plane_world_config => 1
*/
ATTR_plane_position :: 0;
UB_plane_vs_params :: 0;
UB_plane_world_config :: 1;
Plane_Vs_Params :: struct {
mvp: [16]float;
};
Plane_World_Config :: struct {
skyBase: [3]float;
_: [4]u8;
skyTop: [3]float;
_: [4]u8;
sunDisk: [3]float;
_: [4]u8;
horizonHalo: [3]float;
_: [4]u8;
sunHalo: [3]float;
_: [4]u8;
sunLightColor: [3]float;
_: [4]u8;
sunPosition: [3]float;
sunIntensity: float;
skyIntensity: float;
hasClouds: s32;
hasPlane: s32;
planeHeight: float;
planeType: s32;
time: float;
_: [8]u8;
};
/*
#version 430
uniform vec4 plane_vs_params[4];
layout(location = 0) in vec4 position;
layout(location = 0) out vec4 pos;
layout(location = 1) flat out int idx;
void main()
{
vec3 _16 = position.xyz * 1000.0;
gl_Position = mat4(plane_vs_params[0], plane_vs_params[1], plane_vs_params[2], plane_vs_params[3]) * vec4(_16.x, (_16.y + 0.100000001490116119384765625) + (float(gl_InstanceID) * 0.004999999888241291046142578125), _16.z, 1.0);
pos = position;
idx = gl_InstanceID;
}
*/
vs_plane_source_glsl430 := u8.[
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];
/*
#version 430
struct plane_world_config
{
vec3 skyBase;
vec3 skyTop;
vec3 sunDisk;
vec3 horizonHalo;
vec3 sunHalo;
vec3 sunLightColor;
vec3 sunPosition;
float sunIntensity;
float skyIntensity;
int hasClouds;
int hasPlane;
float planeHeight;
int planeType;
float time;
};
uniform plane_world_config _28;
layout(location = 0) out vec4 frag_color;
layout(location = 0) in vec4 pos;
layout(location = 1) flat in int idx;
float random(vec2 st)
{
return fract(sin(dot(st, vec2(12.98980045318603515625, 767.23297119140625))) * 43758.546875);
}
void main()
{
if (_28.planeType == 1)
{
frag_color = vec4(0.0, 0.0, 1.0, 1.0);
}
else
{
vec2 _63 = vec2(float(int(pos.x * 50000.0)), float(int(pos.z * 50000.0)));
vec2 param = _63;
if (random(param) < (float(idx) * 0.100000001490116119384765625))
{
discard;
}
vec2 param_1 = _63;
frag_color = vec4(0.0, random(param_1) + 0.100000001490116119384765625, 0.0, 1.0);
}
}
*/
fs_plane_source_glsl430 := u8.[
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/*
#version 300 es
uniform vec4 plane_vs_params[4];
layout(location = 0) in vec4 position;
out vec4 pos;
flat out int idx;
void main()
{
vec3 _16 = position.xyz * 1000.0;
gl_Position = mat4(plane_vs_params[0], plane_vs_params[1], plane_vs_params[2], plane_vs_params[3]) * vec4(_16.x, (_16.y + 0.100000001490116119384765625) + (float(gl_InstanceID) * 0.004999999888241291046142578125), _16.z, 1.0);
pos = position;
idx = gl_InstanceID;
}
*/
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/*
#version 300 es
precision mediump float;
precision highp int;
struct plane_world_config
{
highp vec3 skyBase;
highp vec3 skyTop;
highp vec3 sunDisk;
highp vec3 horizonHalo;
highp vec3 sunHalo;
highp vec3 sunLightColor;
highp vec3 sunPosition;
highp float sunIntensity;
highp float skyIntensity;
int hasClouds;
int hasPlane;
highp float planeHeight;
int planeType;
highp float time;
};
uniform plane_world_config _28;
layout(location = 0) out highp vec4 frag_color;
in highp vec4 pos;
flat in int idx;
highp float random(highp vec2 st)
{
return fract(sin(dot(st, vec2(12.98980045318603515625, 767.23297119140625))) * 43758.546875);
}
void main()
{
if (_28.planeType == 1)
{
frag_color = vec4(0.0, 0.0, 1.0, 1.0);
}
else
{
highp vec2 _63 = vec2(float(int(pos.x * 50000.0)), float(int(pos.z * 50000.0)));
highp vec2 param = _63;
if (random(param) < (float(idx) * 0.100000001490116119384765625))
{
discard;
}
highp vec2 param_1 = _63;
frag_color = vec4(0.0, random(param_1) + 0.100000001490116119384765625, 0.0, 1.0);
}
}
*/
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];
/*
#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct plane_vs_params
{
float4x4 mvp;
};
struct main0_out
{
float4 pos [[user(locn0)]];
int idx [[user(locn1)]];
float4 gl_Position [[position]];
};
struct main0_in
{
float4 position [[attribute(0)]];
};
vertex main0_out main0(main0_in in [[stage_in]], constant plane_vs_params& _28 [[buffer(0)]], uint gl_InstanceIndex [[instance_id]])
{
main0_out out = {};
float3 _16 = in.position.xyz * 1000.0;
out.gl_Position = _28.mvp * float4(_16.x, (_16.y + 0.100000001490116119384765625) + (float(int(gl_InstanceIndex)) * 0.004999999888241291046142578125), _16.z, 1.0);
out.pos = in.position;
out.idx = int(gl_InstanceIndex);
return out;
}
*/
vs_plane_source_metal_macos := u8.[
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];
/*
#pragma clang diagnostic ignored "-Wmissing-prototypes"
#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct plane_world_config
{
float3 skyBase;
float3 skyTop;
float3 sunDisk;
float3 horizonHalo;
float3 sunHalo;
float3 sunLightColor;
packed_float3 sunPosition;
float sunIntensity;
float skyIntensity;
int hasClouds;
int hasPlane;
float planeHeight;
int planeType;
float time;
};
struct main0_out
{
float4 frag_color [[color(0)]];
};
struct main0_in
{
float4 pos [[user(locn0)]];
int idx [[user(locn1)]];
};
static inline __attribute__((always_inline))
float random(thread const float2& st)
{
return fract(sin(dot(st, float2(12.98980045318603515625, 767.23297119140625))) * 43758.546875);
}
fragment main0_out main0(main0_in in [[stage_in]], constant plane_world_config& _28 [[buffer(0)]])
{
main0_out out = {};
if (_28.planeType == 1)
{
out.frag_color = float4(0.0, 0.0, 1.0, 1.0);
}
else
{
float2 _63 = float2(float(int(in.pos.x * 50000.0)), float(int(in.pos.z * 50000.0)));
float2 param = _63;
if (random(param) < (float(in.idx) * 0.100000001490116119384765625))
{
discard_fragment();
}
float2 param_1 = _63;
out.frag_color = float4(0.0, random(param_1) + 0.100000001490116119384765625, 0.0, 1.0);
}
return out;
}
*/
fs_plane_source_metal_macos := u8.[
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];
plane_shader_desc :: (backend: sg_backend) -> sg_shader_desc {
desc: sg_shader_desc;
desc.label = "plane_shader";
if backend == {
case .GLCORE;
desc.vertex_func.source = xx *vs_plane_source_glsl430;
desc.vertex_func.entry = "main";
desc.fragment_func.source = xx *fs_plane_source_glsl430;
desc.fragment_func.entry = "main";
desc.attrs[0].base_type = .FLOAT;
desc.attrs[0].glsl_name = "position";
desc.uniform_blocks[0].stage = .VERTEX;
desc.uniform_blocks[0].layout = .STD140;
desc.uniform_blocks[0].size = 64;
desc.uniform_blocks[0].glsl_uniforms[0].type = .FLOAT4;
desc.uniform_blocks[0].glsl_uniforms[0].array_count = 4;
desc.uniform_blocks[0].glsl_uniforms[0].glsl_name = "plane_vs_params";
desc.uniform_blocks[1].stage = .FRAGMENT;
desc.uniform_blocks[1].layout = .STD140;
desc.uniform_blocks[1].size = 144;
desc.uniform_blocks[1].glsl_uniforms[0].type = .FLOAT3;
desc.uniform_blocks[1].glsl_uniforms[0].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[0].glsl_name = "_28.skyBase";
desc.uniform_blocks[1].glsl_uniforms[1].type = .FLOAT3;
desc.uniform_blocks[1].glsl_uniforms[1].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[1].glsl_name = "_28.skyTop";
desc.uniform_blocks[1].glsl_uniforms[2].type = .FLOAT3;
desc.uniform_blocks[1].glsl_uniforms[2].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[2].glsl_name = "_28.sunDisk";
desc.uniform_blocks[1].glsl_uniforms[3].type = .FLOAT3;
desc.uniform_blocks[1].glsl_uniforms[3].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[3].glsl_name = "_28.horizonHalo";
desc.uniform_blocks[1].glsl_uniforms[4].type = .FLOAT3;
desc.uniform_blocks[1].glsl_uniforms[4].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[4].glsl_name = "_28.sunHalo";
desc.uniform_blocks[1].glsl_uniforms[5].type = .FLOAT3;
desc.uniform_blocks[1].glsl_uniforms[5].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[5].glsl_name = "_28.sunLightColor";
desc.uniform_blocks[1].glsl_uniforms[6].type = .FLOAT3;
desc.uniform_blocks[1].glsl_uniforms[6].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[6].glsl_name = "_28.sunPosition";
desc.uniform_blocks[1].glsl_uniforms[7].type = .FLOAT;
desc.uniform_blocks[1].glsl_uniforms[7].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[7].glsl_name = "_28.sunIntensity";
desc.uniform_blocks[1].glsl_uniforms[8].type = .FLOAT;
desc.uniform_blocks[1].glsl_uniforms[8].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[8].glsl_name = "_28.skyIntensity";
desc.uniform_blocks[1].glsl_uniforms[9].type = .INT;
desc.uniform_blocks[1].glsl_uniforms[9].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[9].glsl_name = "_28.hasClouds";
desc.uniform_blocks[1].glsl_uniforms[10].type = .INT;
desc.uniform_blocks[1].glsl_uniforms[10].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[10].glsl_name = "_28.hasPlane";
desc.uniform_blocks[1].glsl_uniforms[11].type = .FLOAT;
desc.uniform_blocks[1].glsl_uniforms[11].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[11].glsl_name = "_28.planeHeight";
desc.uniform_blocks[1].glsl_uniforms[12].type = .INT;
desc.uniform_blocks[1].glsl_uniforms[12].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[12].glsl_name = "_28.planeType";
desc.uniform_blocks[1].glsl_uniforms[13].type = .FLOAT;
desc.uniform_blocks[1].glsl_uniforms[13].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[13].glsl_name = "_28.time";
case .GLES3;
desc.vertex_func.source = xx *vs_plane_source_glsl300es;
desc.vertex_func.entry = "main";
desc.fragment_func.source = xx *fs_plane_source_glsl300es;
desc.fragment_func.entry = "main";
desc.attrs[0].base_type = .FLOAT;
desc.attrs[0].glsl_name = "position";
desc.uniform_blocks[0].stage = .VERTEX;
desc.uniform_blocks[0].layout = .STD140;
desc.uniform_blocks[0].size = 64;
desc.uniform_blocks[0].glsl_uniforms[0].type = .FLOAT4;
desc.uniform_blocks[0].glsl_uniforms[0].array_count = 4;
desc.uniform_blocks[0].glsl_uniforms[0].glsl_name = "plane_vs_params";
desc.uniform_blocks[1].stage = .FRAGMENT;
desc.uniform_blocks[1].layout = .STD140;
desc.uniform_blocks[1].size = 144;
desc.uniform_blocks[1].glsl_uniforms[0].type = .FLOAT3;
desc.uniform_blocks[1].glsl_uniforms[0].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[0].glsl_name = "_28.skyBase";
desc.uniform_blocks[1].glsl_uniforms[1].type = .FLOAT3;
desc.uniform_blocks[1].glsl_uniforms[1].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[1].glsl_name = "_28.skyTop";
desc.uniform_blocks[1].glsl_uniforms[2].type = .FLOAT3;
desc.uniform_blocks[1].glsl_uniforms[2].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[2].glsl_name = "_28.sunDisk";
desc.uniform_blocks[1].glsl_uniforms[3].type = .FLOAT3;
desc.uniform_blocks[1].glsl_uniforms[3].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[3].glsl_name = "_28.horizonHalo";
desc.uniform_blocks[1].glsl_uniforms[4].type = .FLOAT3;
desc.uniform_blocks[1].glsl_uniforms[4].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[4].glsl_name = "_28.sunHalo";
desc.uniform_blocks[1].glsl_uniforms[5].type = .FLOAT3;
desc.uniform_blocks[1].glsl_uniforms[5].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[5].glsl_name = "_28.sunLightColor";
desc.uniform_blocks[1].glsl_uniforms[6].type = .FLOAT3;
desc.uniform_blocks[1].glsl_uniforms[6].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[6].glsl_name = "_28.sunPosition";
desc.uniform_blocks[1].glsl_uniforms[7].type = .FLOAT;
desc.uniform_blocks[1].glsl_uniforms[7].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[7].glsl_name = "_28.sunIntensity";
desc.uniform_blocks[1].glsl_uniforms[8].type = .FLOAT;
desc.uniform_blocks[1].glsl_uniforms[8].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[8].glsl_name = "_28.skyIntensity";
desc.uniform_blocks[1].glsl_uniforms[9].type = .INT;
desc.uniform_blocks[1].glsl_uniforms[9].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[9].glsl_name = "_28.hasClouds";
desc.uniform_blocks[1].glsl_uniforms[10].type = .INT;
desc.uniform_blocks[1].glsl_uniforms[10].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[10].glsl_name = "_28.hasPlane";
desc.uniform_blocks[1].glsl_uniforms[11].type = .FLOAT;
desc.uniform_blocks[1].glsl_uniforms[11].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[11].glsl_name = "_28.planeHeight";
desc.uniform_blocks[1].glsl_uniforms[12].type = .INT;
desc.uniform_blocks[1].glsl_uniforms[12].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[12].glsl_name = "_28.planeType";
desc.uniform_blocks[1].glsl_uniforms[13].type = .FLOAT;
desc.uniform_blocks[1].glsl_uniforms[13].array_count = 0;
desc.uniform_blocks[1].glsl_uniforms[13].glsl_name = "_28.time";
case .METAL_MACOS;
desc.vertex_func.source = xx *vs_plane_source_metal_macos;
desc.vertex_func.entry = "main0";
desc.fragment_func.source = xx *fs_plane_source_metal_macos;
desc.fragment_func.entry = "main0";
desc.attrs[0].base_type = .FLOAT;
desc.uniform_blocks[0].stage = .VERTEX;
desc.uniform_blocks[0].layout = .STD140;
desc.uniform_blocks[0].size = 64;
desc.uniform_blocks[0].msl_buffer_n = 0;
desc.uniform_blocks[1].stage = .FRAGMENT;
desc.uniform_blocks[1].layout = .STD140;
desc.uniform_blocks[1].size = 144;
desc.uniform_blocks[1].msl_buffer_n = 0;
}
return desc;
}

45
src/shaders/jai/shader_triangle.jai
View File

@ -43,6 +43,7 @@ SMP_smp :: 0;
void main() void main()
{ {
gl_Position = position; gl_Position = position;
gl_Position.y += (float(gl_InstanceID) * 0.100000001490116119384765625);
color = color0; color = color0;
texcoord = uv; texcoord = uv;
} }
@ -64,9 +65,14 @@ vs_source_glsl430 := u8.[
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]; ];
/* /*
#version 430 #version 430
@ -168,6 +174,7 @@ fs_source_glsl430 := u8.[
void main() void main()
{ {
gl_Position = position; gl_Position = position;
gl_Position.y += (float(gl_InstanceID) * 0.100000001490116119384765625);
color = color0; color = color0;
texcoord = uv; texcoord = uv;
} }
@ -187,9 +194,14 @@ vs_source_glsl300es := u8.[
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0x7d,0x0a,0x0a,0x00,
]; ];
/* /*
#version 300 es #version 300 es
@ -304,10 +316,11 @@ fs_source_glsl300es := u8.[
float4 uv [[attribute(2)]]; float4 uv [[attribute(2)]];
}; };
vertex main0_out main0(main0_in in [[stage_in]]) vertex main0_out main0(main0_in in [[stage_in]], uint gl_InstanceIndex [[instance_id]])
{ {
main0_out out = {}; main0_out out = {};
out.gl_Position = in.position; out.gl_Position = in.position;
out.gl_Position.y += (float(int(gl_InstanceIndex)) * 0.100000001490116119384765625);
out.color = in.color0; out.color = in.color0;
out.texcoord = in.uv; out.texcoord = in.uv;
return out; return out;
@ -338,11 +351,19 @@ vs_source_metal_macos := u8.[
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65
src/shaders/shader_plane.glsl Normal file
View File

@ -0,0 +1,65 @@
@vs vs_plane
in vec4 position;
layout(binding=0) uniform plane_vs_params {
mat4 mvp;
};
out vec4 pos;
out flat int idx;
void main() {
vec3 multisize = vec3(position.xyz * 1000.0);
gl_Position = mvp * (vec4(multisize.x, multisize.y + 0.1 + float(gl_InstanceIndex) * 0.005, multisize.z, 1.0));
pos = position;
idx = gl_InstanceIndex;
}
@end
@fs fs_plane
in vec4 pos;
in flat int idx;
out vec4 frag_color;
float random (vec2 st) {
return fract(sin(dot(st.xy, vec2(12.9898,767.233)))* 43758.5453123);
}
layout(binding=1) uniform plane_world_config {
vec3 skyBase;
vec3 skyTop;
vec3 sunDisk;
vec3 horizonHalo;
vec3 sunHalo;
vec3 sunLightColor;
vec3 sunPosition;
float sunIntensity;
float skyIntensity;
int hasClouds;
int hasPlane;
float planeHeight;
int planeType;
float time;
};
void main() {
if(planeType == 1) {
frag_color = vec4(0.0, 0.0, 1.0, 1.0);
} else {
vec2 approxPos = vec2(int(pos.x * 50000.0), int(pos.z * 50000.0));
float height = random(approxPos);
if(height < float(idx) * 0.1) {
discard;
}
frag_color = vec4(0.0, random(approxPos) + 0.1, 0.0, 1.0);
}
}
@end
@program plane vs_plane fs_plane

1
src/shaders/shader_triangle.glsl
View File

@ -8,6 +8,7 @@ out vec4 texcoord;
void main() { void main() {
gl_Position = position; gl_Position = position;
gl_Position.y += float(gl_InstanceIndex) * 0.1;
color = color0; color = color0;
texcoord = uv; texcoord = uv;
} }