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add block material shaders

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- 'shader' property of block materials: shaders/materials/<name>.glslv, .glslf with material_vertex / material_fragment hooks and #param uniforms
- material shaders code is included into main, translucent and shadows programs through generated headers, no extra draw calls
- chunk vertex normal.w byte replaced with 'flags': bit 7 - emission flag, bits 0-6 - material shader index (vertex format size is not changed)
- doc/*/block-materials.md
This commit is contained in:
lookibed 2026-10-02 06:33:01 +03:00
parent f90750c066
commit 81489a13cf
33 changed files with 761 additions and 53 deletions
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8
res/shaders/translucent.glslv
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@ -14,11 +14,15 @@ out vec4 a_torchLight;
uniform float u_dayTime;
#include <__materials_vertex__>
void main() {
a_material = unpack_material(v_normal.w);
a_realnormal = v_normal.xyz * 2.0 - 1.0;
a_modelpos = u_model * vec4(v_position, 1.0f);
a_modelpos.xyz = apply_material_vertex(a_material, a_modelpos.xyz);
vec3 pos3d = a_modelpos.xyz - u_cameraPos;
a_realnormal = v_normal.xyz * 2.0 - 1.0;
a_normal = calc_screen_normal(a_realnormal);
a_torchLight = vec4(calc_torch_light(
@ -33,7 +37,7 @@ void main() {
mat4 viewmodel = u_view * u_model;
a_distance = length(viewmodel * vec4(pos3d, 0.0));
a_fog = calc_fog(length(viewmodel * vec4(pos3d * FOG_POS_SCALE, 0.0)) / 256.0);
a_emission = v_normal.w;
a_emission = unpack_emission(v_normal.w);
vec4 viewmodelpos = u_view * a_modelpos;
a_position = viewmodelpos.xyz;