Add OpenGLCommandList

engine/src/RHI/OpenGL/OpenGLCommandList.cpp

@@ -0,0 +1,74 @@
+#define GLFW_INCLUDE_NONE
+#include "XCEngine/RHI/OpenGL/OpenGLCommandList.h"
+#include <glad/glad.h>
+#include <GLFW/glfw3.h>
+
+namespace XCEngine {
+namespace RHI {
+
+OpenGLCommandList::OpenGLCommandList() 
+    : m_primitiveType(GL_TRIANGLES)
+    , m_currentVAO(0)
+    , m_currentProgram(0)
+{
+}
+
+OpenGLCommandList::~OpenGLCommandList() {
+}
+
+void OpenGLCommandList::Clear(float r, float g, float b, float a, unsigned int buffers) {
+    glClearColor(r, g, b, a);
+    unsigned int glBuffers = 0;
+    if (buffers & 0x1) glBuffers |= GL_COLOR_BUFFER_BIT;
+    if (buffers & 0x2) glBuffers |= GL_DEPTH_BUFFER_BIT;
+    if (buffers & 0x4) glBuffers |= GL_STENCIL_BUFFER_BIT;
+    glClear(glBuffers);
+}
+
+void OpenGLCommandList::SetPipelineState(void* pipelineState) {
+}
+
+void OpenGLCommandList::SetVertexBuffer(unsigned int buffer, size_t offset, size_t stride) {
+}
+
+void OpenGLCommandList::SetIndexBuffer(unsigned int buffer, unsigned int type) {
+}
+
+static unsigned int ToGLPrimitiveType(PrimitiveType type) {
+    switch (type) {
+        case PrimitiveType::Points: return GL_POINTS;
+        case PrimitiveType::Lines: return GL_LINES;
+        case PrimitiveType::LineStrip: return GL_LINE_STRIP;
+        case PrimitiveType::Triangles: return GL_TRIANGLES;
+        case PrimitiveType::TriangleStrip: return GL_TRIANGLE_STRIP;
+        case PrimitiveType::TriangleFan: return GL_TRIANGLE_FAN;
+        default: return GL_TRIANGLES;
+    }
+}
+
+void OpenGLCommandList::Draw(PrimitiveType type, unsigned int vertexCount, unsigned int startVertex) {
+    m_primitiveType = ToGLPrimitiveType(type);
+    glDrawArrays(m_primitiveType, startVertex, vertexCount);
+}
+
+void OpenGLCommandList::DrawIndexed(PrimitiveType type, unsigned int indexCount, unsigned int startIndex, int baseVertex) {
+    m_primitiveType = ToGLPrimitiveType(type);
+    glDrawElements(m_primitiveType, indexCount, GL_UNSIGNED_INT, (void*)(startIndex * sizeof(unsigned int)));
+}
+
+void OpenGLCommandList::BindVertexArray(unsigned int vao) {
+    m_currentVAO = vao;
+    glBindVertexArray(vao);
+}
+
+void OpenGLCommandList::UseShader(unsigned int program) {
+    m_currentProgram = program;
+    glUseProgram(program);
+}
+
+void OpenGLCommandList::SetViewport(int x, int y, int width, int height) {
+    glViewport(x, y, width, height);
+}
+
+} // namespace RHI
+} // namespace XCEngine