Implement clipping

backends/source/gfx_citro3d.cpp

@@ -264,6 +264,8 @@ void GfxCitro3D::UploadPools() {
   BufInfo_Init(buf);
   BufInfo_Add(buf, GetVertexBufPtr(0), sizeof(Li::Vertex), 3, 0x210);
 }
+
+void GfxCitro3D::ClipRect() {}
 }  // namespace PD
 #else
 namespace PD {
@@ -283,5 +285,6 @@ Li::Texture GfxCitro3D::LoadTexture(const std::vector<PD::u8>& pixels, int w,
 }
 void GfxCitro3D::DeleteTexture(const Li::Texture& tex) {}
 void GfxCitro3D::UploadPools() {}
+void GfxCitro3D::ClipRect() {}
 }  // namespace PD
 #endif

backends/source/gfx_directx9.cpp

@@ -285,6 +285,8 @@ void GfxDirectX9::UploadPools() {
   memcpy(iptr, GetIndexBufPtr(0), GetIndexPoolSize() * sizeof(u16));
   impl->IBO->Unlock();
 }
+
+void GfxDirectX9::ClipRect() {}
 }  // namespace PD
 #else
 namespace PD {
@@ -304,5 +306,6 @@ Li::Texture GfxDirectX9::LoadTexture(const std::vector<PD::u8>& pixels, int w,
 }
 void GfxDirectX9::DeleteTexture(const Li::Texture& tex) {}
 void GfxDirectX9::UploadPools() {}
+void GfxDirectX9::ClipRect() {}
 }  // namespace PD
 #endif

backends/source/gfx_opengl2.cpp

@@ -183,6 +183,16 @@ void GfxOpenGL2::UploadPools() {
   glBufferData(GL_ELEMENT_ARRAY_BUFFER, GetIndexPoolSize() * sizeof(u16),
                GetIndexBufPtr(0), GL_DYNAMIC_DRAW);
 }
+
+void GfxOpenGL2::ClipRect() {
+  if (CurrentHasClip) {
+    glEnable(GL_SCISSOR_TEST);
+    glScissor(CurrentClip.x, ViewPort.y - (CurrentClip.y + CurrentClip.w),
+              CurrentClip.z, CurrentClip.w);
+  } else {
+    glDisable(GL_SCISSOR_TEST);
+  }
+}
 }  // namespace PD
 #else
 namespace PD {
@@ -203,5 +213,6 @@ Li::Texture GfxOpenGL2::LoadTexture(const std::vector<PD::u8>& pixels, int w,
 void GfxOpenGL2::DeleteTexture(const Li::Texture& tex) {}
 void GfxOpenGL2::pSetupShaderAttribs(u32 shader) {}
 void GfxOpenGL2::UploadPools() {}
+void GfxOpenGL2::ClipRect() {}
 }  // namespace PD
 #endif

backends/source/gfx_opengl3.cpp

@@ -159,6 +159,16 @@ void GfxOpenGL3::UploadPools() {
 
   glBindVertexArray(0);
 }
+
+void GfxOpenGL3::ClipRect() {
+  if (CurrentHasClip) {
+    glEnable(GL_SCISSOR_TEST);
+    glScissor(CurrentClip.x, ViewPort.y - (CurrentClip.y + CurrentClip.w),
+              CurrentClip.z, CurrentClip.w);
+  } else {
+    glDisable(GL_SCISSOR_TEST);
+  }
+}
 }  // namespace PD
 #else
 namespace PD {
@@ -178,5 +188,6 @@ Li::Texture GfxOpenGL3::LoadTexture(const std::vector<PD::u8>& pixels, int w,
 }
 void GfxOpenGL3::DeleteTexture(const Li::Texture& tex) {}
 void GfxOpenGL3::UploadPools() {}
+void GfxOpenGL3::ClipRect() {}
 }  // namespace PD
 #endif