redgpu/raygpu: Simple & Portable Graphics Library

examples/shaders_basic.c
53 строки2 KB
manuel
Start work on rework
22 авг 2025, 17:49
22 авг 2025, 17:4991e7988
#include <raygpu.h>
const char fragSourceGLSL[] = R"(
#version 450
#extension GL_ARB_separate_shader_objects : enable  // Enable separate sampler objects if needed
// Inputs from vertex shader.
layout(location = 0) in vec2 frag_uv;
layout(location = 1) in vec4 frag_color;
// Output fragment color.
layout(location = 0) out vec4 outColor;
// Texture and sampler, bound separately.
layout(binding = 1) uniform texture2D texture0;  // Texture (binding = 1)
layout(binding = 2) uniform sampler texSampler;    // Sampler (binding = 2)
void main() {
    // Sample the texture using the combined sampler.
    vec4 texColor = texture(sampler2D(texture0, texSampler), frag_uv);
    outColor = (texColor * frag_color).yzxw + vec4(0.4f,0,0,0.4f);
}
)";

int main(){
    InitWindow(800, 800, "Shaders example");
    Shader colorInverter = LoadShaderFromMemory(NULL, fragSourceGLSL);
    Matrix matrix = ScreenMatrix(GetScreenWidth(), GetScreenHeight());
    Matrix identity = MatrixIdentity();
    DescribedBuffer* matrixbuffer = GenUniformBuffer(&matrix, sizeof(Matrix));
    DescribedBuffer* matrixbuffers = GenStorageBuffer(&identity, sizeof(Matrix));
    
    Texture tex = LoadTexture(TextFormat("%s/tileset.png", FindDirectory("resources", 3)));
    DescribedSampler sampler = LoadSampler(TEXTURE_WRAP_REPEAT, TEXTURE_FILTER_BILINEAR);
    
    while(!WindowShouldClose()){
        BeginDrawing();
        ClearBackground(BLACK);
        BeginPipelineMode(colorInverter.id);
        SetPipelineUniformBuffer(colorInverter.id, 0, matrixbuffer);
        SetPipelineTexture(colorInverter.id, 1, tex);
        SetPipelineSampler(colorInverter.id, 2, sampler);
        SetPipelineStorageBuffer(colorInverter.id, 3, matrixbuffers);
        
        DrawTexturePro(
            tex,
            (Rectangle){0, 0, (float)tex.width, (float)tex.height}, 
            (Rectangle){0, 0, (float)tex.width, (float)tex.height}, 
            (Vector2)  {0, 0},
            0.0f,
            WHITE
        );
        
        EndPipelineMode();
        DrawFPS(5, 5);
        EndDrawing();
    }
}