Determine packed depth stencil extension support automatically.

src/libANGLE/Caps.cpp

@@ -215,6 +215,15 @@ static bool GetFormatSupport(const TextureCapsMap &textureCaps, const std::vecto
     return true;
 }
 
+// Check for GL_OES_packed_depth_stencil
+static bool DeterminePackedDepthStencilSupport(const TextureCapsMap &textureCaps)
+{
+    std::vector<GLenum> requiredFormats;
+    requiredFormats.push_back(GL_DEPTH24_STENCIL8);
+
+    return GetFormatSupport(textureCaps, requiredFormats, false, false, true);
+}
+
 // Checks for GL_OES_rgb8_rgba8 support
 static bool DetermineRGB8AndRGBA8TextureSupport(const TextureCapsMap &textureCaps)
 {
@@ -364,6 +373,7 @@ static bool DetermineColorBufferFloatSupport(const TextureCapsMap &textureCaps)
 
 void Extensions::setTextureExtensionSupport(const TextureCapsMap &textureCaps)
 {
+    packedDepthStencil = DeterminePackedDepthStencilSupport(textureCaps);
     rgb8rgba8 = DetermineRGB8AndRGBA8TextureSupport(textureCaps);
     textureFormatBGRA8888 = DetermineBGRA8TextureSupport(textureCaps);
     textureHalfFloat = DetermineHalfFloatTextureSupport(textureCaps);

src/libANGLE/Caps.h

@@ -73,6 +73,7 @@ struct Extensions
 
     // Set all texture related extension support based on the supported textures.
     // Determines support for:
+    // GL_OES_packed_depth_stencil
     // GL_OES_rgb8_rgba8
     // GL_EXT_texture_format_BGRA8888
     // GL_OES_texture_half_float, GL_OES_texture_half_float_linear

src/libANGLE/renderer/d3d/d3d11/renderer11_utils.cpp

@@ -1078,7 +1078,6 @@ void GenerateCaps(ID3D11Device *device, ID3D11DeviceContext *deviceContext, cons
     // GL extension support
     extensions->setTextureExtensionSupport(*textureCapsMap);
     extensions->elementIndexUint = true;
-    extensions->packedDepthStencil = true;
     extensions->getProgramBinary = true;
     extensions->rgb8rgba8 = true;
     extensions->readFormatBGRA = true;

src/libANGLE/renderer/d3d/d3d9/renderer9_utils.cpp

@@ -478,7 +478,6 @@ void GenerateCaps(IDirect3D9 *d3d9, IDirect3DDevice9 *device, D3DDEVTYPE deviceT
     // GL extension support
     extensions->setTextureExtensionSupport(*textureCapsMap);
     extensions->elementIndexUint = deviceCaps.MaxVertexIndex >= (1 << 16);
-    extensions->packedDepthStencil = true;
     extensions->getProgramBinary = true;
     extensions->rgb8rgba8 = true;
     extensions->readFormatBGRA = true;