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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
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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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15
res/shaders/shadows.glslv
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@ -5,13 +5,18 @@ layout (location = 1) in vec2 v_texCoord;
layout (location = 2) in vec4 v_light;
layout (location = 3) in vec4 v_normal;
out vec2 a_texCoord;
// same vertex stage interface as world shaders for material shaders
#include <world_vertex_header>
uniform mat4 u_model;
uniform mat4 u_proj;
uniform mat4 u_view;
uniform float u_dayTime;
#include <__materials_vertex__>
void main() {
a_texCoord = v_texCoord;
gl_Position = u_proj * u_view * u_model * vec4(v_position, 1.0f);
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);
gl_Position = u_proj * u_view * a_modelpos;
}