void HSWDisplay::LoadGraphics()
{
// As of this writing, we don't yet have an abstraction for Textures, Buffers, and Shaders like we do for D3D11, D3D11, and OpenGL.
#if defined(OVR_BUILD_DEBUG)
if(!pTexture)
pTexture = *LoadTextureTga(RenderParams, "C:\\TestPath\\TestFile.tga", 255);
#endif
if(!pTexture)
{
D3DCAPS9 caps;
RenderParams.Device->GetDeviceCaps(&caps);
if(caps.TextureCaps & (D3DPTEXTURECAPS_SQUAREONLY | D3DPTEXTURECAPS_POW2))
{ HSWDISPLAY_LOG(("[HSWDisplay D3D9] Square textures allowed only.")); }
size_t textureSize;
const uint8_t* TextureData = GetDefaultTexture(textureSize);
pTexture = *LoadTextureTga(RenderParams, TextureData, (int)textureSize, 255);
OVR_ASSERT(pTexture);
}
if(!pVB)
{
HRESULT hResult = RenderParams.Device->CreateVertexBuffer(4 * sizeof(HASWVertex), NULL, HASWVertexD3D9Format, D3DPOOL_MANAGED, &pVB.GetRawRef(), NULL);
if(FAILED(hResult))
{ HSWDISPLAY_LOG(("[HSWDisplay D3D9] CreateVertexBuffer failed. %d (%x)", hResult, hResult)); }
else
{
void* pVerticesVoid;
hResult = pVB->Lock(0, 0, (void**)&pVerticesVoid, 0);
if(FAILED(hResult))
{ HSWDISPLAY_LOG(("[HSWDisplay D3D9] Lock failed. %d (%x)", hResult, hResult)); }
else
{
HASWVertex* pVertices = reinterpret_cast<HASWVertex*>(pVerticesVoid);
const bool flip = ((RenderState.DistortionCaps & ovrDistortionCap_FlipInput) != 0);
const float left = -1.0f;
const float top = -1.1f;
const float right = +1.0f;
const float bottom = +0.9f;
pVertices[0] = HASWVertex(left, top, 0.f, Color(255, 255, 255, 255), 0.f, flip ? 1.f : 0.f); // To do: Make this branchless
pVertices[1] = HASWVertex(left, bottom, 0.f, Color(255, 255, 255, 255), 0.f, flip ? 0.f : 1.f);
pVertices[2] = HASWVertex(right, top, 0.f, Color(255, 255, 255, 255), 1.f, flip ? 1.f : 0.f);
pVertices[3] = HASWVertex(right, bottom, 0.f, Color(255, 255, 255, 255), 1.f, flip ? 0.f : 1.f);
pVB->Unlock();
}
}
}
}
void HSWDisplay::LoadGraphics()
{
// We assume here that the current GL context is the one our resources will be associated with.
if(GLVersionInfo.MajorVersion == 0)
GetGLVersionAndExtensions(GLVersionInfo);
if (FrameBuffer == 0)
{
glGenFramebuffers(1, &FrameBuffer);
}
if (!pTexture) // To do: Add support for .dds files, which would be significantly smaller than the size of the tga.
{
size_t textureSize;
const uint8_t* TextureData = GetDefaultTexture(textureSize);
pTexture = *LoadTextureTga(RenderParams, Sample_Linear | Sample_Clamp, TextureData, (int)textureSize, 255);
}
if (!pShaderSet)
{
pShaderSet = *new ShaderSet();
}
if(!pVertexShader)
{
OVR::String strShader((GLVersionInfo.MajorVersion >= 3) ? glsl3Prefix : glsl2Prefix);
strShader += SimpleTexturedQuad_vs;
pVertexShader = *new VertexShader(&RenderParams, const_cast<char*>(strShader.ToCStr()), strShader.GetLength(), SimpleTexturedQuad_vs_refl, OVR_ARRAY_COUNT(SimpleTexturedQuad_vs_refl));
pShaderSet->SetShader(pVertexShader);
}
if(!pFragmentShader)
{
OVR::String strShader((GLVersionInfo.MajorVersion >= 3) ? glsl3Prefix : glsl2Prefix);
strShader += SimpleTexturedQuad_ps;
pFragmentShader = *new FragmentShader(&RenderParams, const_cast<char*>(strShader.ToCStr()), strShader.GetLength(), SimpleTexturedQuad_ps_refl, OVR_ARRAY_COUNT(SimpleTexturedQuad_ps_refl));
pShaderSet->SetShader(pFragmentShader);
}
if(!pVB)
{
pVB = *new Buffer(&RenderParams);
pVB->Data(Buffer_Vertex, NULL, 4 * sizeof(HASWVertex));
HASWVertex* pVertices = (HASWVertex*)pVB->Map(0, 4 * sizeof(HASWVertex), Map_Discard);
OVR_ASSERT(pVertices);
if(pVertices)
{
const bool flip = ((RenderState.DistortionCaps & ovrDistortionCap_FlipInput) != 0);
const float left = -1.0f; // We currently draw this in normalized device coordinates with an stereo translation
const float top = -1.1f; // applied as a vertex shader uniform. In the future when we have a more formal graphics
const float right = 1.0f; // API abstraction we may move this draw to an overlay layer or to a more formal
const float bottom = 0.9f; // model/mesh scheme with a perspective projection.
pVertices[0] = HASWVertex(left, top, 0.f, Color(255, 255, 255, 255), 0.f, flip ? 1.f : 0.f);
pVertices[1] = HASWVertex(left, bottom, 0.f, Color(255, 255, 255, 255), 0.f, flip ? 0.f : 1.f);
pVertices[2] = HASWVertex(right, top, 0.f, Color(255, 255, 255, 255), 1.f, flip ? 1.f : 0.f);
pVertices[3] = HASWVertex(right, bottom, 0.f, Color(255, 255, 255, 255), 1.f, flip ? 0.f : 1.f);
pVB->Unmap(pVertices);
}
}
// We don't generate the vertex arrays here
if (!VAO && GLVersionInfo.SupportsVAO)
{
OVR_ASSERT(!VAOInitialized);
#ifdef OVR_OS_MAC
if(GLVersionInfo.WholeVersion >= 302)
glGenVertexArrays(1, &VAO);
else
glGenVertexArraysAPPLE(1, &VAO);
#else
glGenVertexArrays(1, &VAO);
#endif
}
}
