- allow obtaining holographic stereo matrices through glGet API

mlfarrell · Aug 12, 2016 · 7a858fc · 7a858fc
1 parent ab3ffff
commit 7a858fc
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diff --git a/include/GLES2/gl2ext.h b/include/GLES2/gl2ext.h
@@ -871,6 +871,9 @@ GL_APICALL void GL_APIENTRY glVertexAttribDivisorANGLE (GLuint index, GLuint div
 #define GL_FRAMEBUFFER_ATTACHMENT_ANGLE   0x93A3
 #endif /* GL_ANGLE_texture_usage */
 
+//HACK - mlf
+#define GL_HOLOGRAPHIC_MATRICES_ANGLE     0xFFFF1
+
 #ifndef GL_ANGLE_translated_shader_source
 #define GL_ANGLE_translated_shader_source 1
 #define GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE 0x93A0

diff --git a/src/libANGLE/State.cpp b/src/libANGLE/State.cpp
@@ -1384,6 +1384,11 @@ void State::getBooleanv(GLenum pname, GLboolean *params)
     }
 }
 
+///HACK - mlf
+#ifdef ANGLE_ENABLE_WINDOWS_HOLOGRAPHIC
+void AngleHolographicGetHoloMatrices(float *matricesViewProjection2);
+#endif
+
 void State::getFloatv(GLenum pname, GLfloat *params)
 {
     // Please note: DEPTH_CLEAR_VALUE is included in our internal getFloatv implementation
@@ -1413,6 +1418,11 @@ void State::getFloatv(GLenum pname, GLfloat *params)
         params[2] = mBlendColor.blue;
         params[3] = mBlendColor.alpha;
         break;
+
+      case GL_HOLOGRAPHIC_MATRICES_ANGLE:
+        AngleHolographicGetHoloMatrices(params);
+        break;
+
       default:
         UNREACHABLE();
         break;

diff --git a/src/libANGLE/renderer/d3d/d3d11/winrt/HolographicSwapChain11.cpp b/src/libANGLE/renderer/d3d/d3d11/winrt/HolographicSwapChain11.cpp
@@ -44,6 +44,18 @@ using namespace ABI::Windows::Graphics::DirectX::Direct3D11;
 using namespace ABI::Windows::Graphics::Holographic;
 using namespace ABI::Windows::Perception::Spatial;
 
+///HACK - mlf
+namespace gl
+{
+  static DirectX::XMFLOAT4X4 gHoloViewProj[2];
+
+  void AngleHolographicGetHoloMatrices(float *matricesViewProjection2)
+  {
+    memcpy(matricesViewProjection2, gHoloViewProj, sizeof(float) * 16 * 2);
+  }
+}
+///end hack
+
 namespace rx
 {
 
@@ -458,6 +470,8 @@ EGLint HolographicSwapChain11::updateHolographicRenderingParameters(
                         DirectX::XMLoadFloat4x4(reinterpret_cast<DirectX::XMFLOAT4X4*>(&viewTransform.Right)) * DirectX::XMLoadFloat4x4(reinterpret_cast<DirectX::XMFLOAT4X4*>(&projectionTransform.Right)))
                 );
 
+                memcpy(gl::gHoloViewProj, viewProj, sizeof(float) * 16 * 2);
+
                 // get the current program
                 context = gl::GetValidGlobalContext();
                 program = context->getState().getProgram();

diff --git a/src/libANGLE/validationES.cpp b/src/libANGLE/validationES.cpp
@@ -1496,6 +1496,13 @@ bool ValidateUniformMatrix(gl::Context *context, GLenum matrixType, GLint locati
 
 bool ValidateStateQuery(gl::Context *context, GLenum pname, GLenum *nativeType, unsigned int *numParams)
 {
+  //HACK - mlf
+  if(pname == GL_HOLOGRAPHIC_MATRICES_ANGLE)
+  {
+    *nativeType = GL_FLOAT;
+    return true;
+  }
+
     if (!context->getQueryParameterInfo(pname, nativeType, numParams))
     {
         context->recordError(Error(GL_INVALID_ENUM));