From 2d8f706efe6e0a02b3238c2f22e7cdce620e9807 Mon Sep 17 00:00:00 2001
From: hachem <im@hachem.wtf>
Date: Wed, 13 Aug 2025 18:20:54 +0200
Subject: feat: compute shaders and compute textures

---
 src/platform/opengl/opengl_shader.cpp | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

(limited to 'src/platform/opengl/opengl_shader.cpp')

diff --git a/src/platform/opengl/opengl_shader.cpp b/src/platform/opengl/opengl_shader.cpp
index 39e582a..10da3de 100644
--- a/src/platform/opengl/opengl_shader.cpp
+++ b/src/platform/opengl/opengl_shader.cpp
@@ -12,6 +12,8 @@ namespace Donut
             return GL_VERTEX_SHADER;
         if (type == "fragment" || type == "pixel")
             return GL_FRAGMENT_SHADER;
+        if (type == "compute")
+            return GL_COMPUTE_SHADER;
         return 0;
     }
 
@@ -37,6 +39,14 @@ namespace Donut
         compile(sources);
     }
 
+    OpenGLShader::OpenGLShader(const std::string& name, const std::string& compute_src)
+        : m_name(name) 
+    {
+        std::unordered_map<uint32_t, std::string> sources;
+        sources[GL_COMPUTE_SHADER] = compute_src;
+        compile(sources);
+    }
+
     OpenGLShader::~OpenGLShader()
     {
         glDeleteProgram(m_renderer_id);
@@ -160,6 +170,11 @@ namespace Donut
         upload_uniform_float(name, value);
     }
 
+    void OpenGLShader::set_float2(const std::string& name, const glm::vec2& value)
+    {
+        upload_uniform_float2(name, value);
+    }
+
     void OpenGLShader::set_float3(const std::string& name, const glm::vec3& value)
     {
         upload_uniform_float3(name, value);
@@ -222,4 +237,19 @@ namespace Donut
         int location = glGetUniformLocation(m_renderer_id, name.c_str());
         glUniformMatrix4fv(location, 1, GL_FALSE, glm::value_ptr(matrix));
     }
+
+    void OpenGLShader::dispatch(uint32_t x, uint32_t y, uint32_t z)
+    {
+        glDispatchCompute(x, y, z);
+    }
+
+    void OpenGLShader::dispatch_indirect(uint32_t offset)
+    {
+        glDispatchComputeIndirect(offset);
+    }
+
+    void OpenGLShader::memory_barrier(uint32_t barriers)
+    {
+        glMemoryBarrier(barriers);
+    }
 };
-- 
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