C++ CGUIShaderDX::DrawQuad方法代码示例

void CD3DTexture::DrawQuad(const CPoint points[4], color_t color, unsigned numViews, ID3D11ShaderResourceView **view, const CRect *texCoords, SHADER_METHOD options)
{
  XMFLOAT4 xcolor;
  CD3DHelper::XMStoreColor(&xcolor, color);
  CRect coords = texCoords ? *texCoords : CRect(0.0f, 0.0f, 1.0f, 1.0f);

  Vertex verts[4] = {
    { XMFLOAT3(points[0].x, points[0].y, 0), xcolor, XMFLOAT2(coords.x1, coords.y1), XMFLOAT2(0.0f, 0.0f) },
    { XMFLOAT3(points[1].x, points[1].y, 0), xcolor, XMFLOAT2(coords.x2, coords.y1), XMFLOAT2(0.0f, 0.0f) },
    { XMFLOAT3(points[2].x, points[2].y, 0), xcolor, XMFLOAT2(coords.x2, coords.y2), XMFLOAT2(0.0f, 0.0f) },
    { XMFLOAT3(points[3].x, points[3].y, 0), xcolor, XMFLOAT2(coords.x1, coords.y2), XMFLOAT2(0.0f, 0.0f) },
  };

  CGUIShaderDX* pGUIShader = g_Windowing.GetGUIShader();

  pGUIShader->Begin(view && numViews > 0 ? options : SHADER_METHOD_RENDER_DEFAULT);
  if (view && numViews > 0)
    pGUIShader->SetShaderViews(numViews, view);
  pGUIShader->DrawQuad(verts[0], verts[1], verts[2], verts[3]);
}

void CGUITextureD3D::Draw(float *x, float *y, float *z, const CRect &texture, const CRect &diffuse, int orientation)
{
  XMFLOAT4 xcolor;
  CD3DHelper::XMStoreColor(&xcolor, m_col);

  Vertex verts[4];
  verts[0].pos.x = x[0]; verts[0].pos.y = y[0]; verts[0].pos.z = z[0];
  verts[0].texCoord.x = texture.x1;   verts[0].texCoord.y = texture.y1;
  verts[0].texCoord2.x = diffuse.x1;  verts[0].texCoord2.y = diffuse.y1;
  verts[0].color = xcolor;

  verts[1].pos.x = x[1]; verts[1].pos.y = y[1]; verts[1].pos.z = z[1];
  if (orientation & 4)
  {
    verts[1].texCoord.x = texture.x1;
    verts[1].texCoord.y = texture.y2;
  }
  else
  {
    verts[1].texCoord.x = texture.x2;
    verts[1].texCoord.y = texture.y1;
  }
  if (m_info.orientation & 4)
  {
    verts[1].texCoord2.x = diffuse.x1;
    verts[1].texCoord2.y = diffuse.y2;
  }
  else
  {
    verts[1].texCoord2.x = diffuse.x2;
    verts[1].texCoord2.y = diffuse.y1;
  }
  verts[1].color = xcolor;

  verts[2].pos.x = x[2]; verts[2].pos.y = y[2]; verts[2].pos.z = z[2];
  verts[2].texCoord.x = texture.x2;   verts[2].texCoord.y = texture.y2;
  verts[2].texCoord2.x = diffuse.x2;  verts[2].texCoord2.y = diffuse.y2;
  verts[2].color = xcolor;

  verts[3].pos.x = x[3]; verts[3].pos.y = y[3]; verts[3].pos.z = z[3];
  if (orientation & 4)
  {
    verts[3].texCoord.x = texture.x2;
    verts[3].texCoord.y = texture.y1;
  }
  else
  {
    verts[3].texCoord.x = texture.x1;
    verts[3].texCoord.y = texture.y2;
  }
  if (m_info.orientation & 4)
  {
    verts[3].texCoord2.x = diffuse.x2;
    verts[3].texCoord2.y = diffuse.y1;
  }
  else
  {
    verts[3].texCoord2.x = diffuse.x1;
    verts[3].texCoord2.y = diffuse.y2;
  }
  verts[3].color = xcolor;

  CDXTexture* tex = (CDXTexture *)m_texture.m_textures[m_currentFrame];
  CGUIShaderDX* pGUIShader = DX::Windowing().GetGUIShader();

  pGUIShader->Begin(m_diffuse.size() ? SHADER_METHOD_RENDER_MULTI_TEXTURE_BLEND : SHADER_METHOD_RENDER_TEXTURE_BLEND);

  if (m_diffuse.size())
  {
    CDXTexture* diff = (CDXTexture *)m_diffuse.m_textures[0];
    ID3D11ShaderResourceView* resource[] = { tex->GetShaderResource(), diff->GetShaderResource() };
    pGUIShader->SetShaderViews(ARRAYSIZE(resource), resource);
  }
  else
  {
    ID3D11ShaderResourceView* resource = tex->GetShaderResource();
    pGUIShader->SetShaderViews(1, &resource);
  }
  pGUIShader->DrawQuad(verts[0], verts[1], verts[2], verts[3]);
}

void CSlideShowPic::Render(float *x, float *y, CBaseTexture* pTexture, UTILS::Color color)
{
#ifdef HAS_DX
  Vertex vertex[5];
  for (int i = 0; i < 4; i++)
  {
    vertex[i].pos = XMFLOAT3( x[i], y[i], 0);
    CD3DHelper::XMStoreColor(&vertex[i].color, color);
    vertex[i].texCoord = XMFLOAT2(0.0f, 0.0f);
    vertex[i].texCoord2 = XMFLOAT2(0.0f, 0.0f);
  }

  if (pTexture)
  {
    vertex[1].texCoord.x = vertex[2].texCoord.x = (float) pTexture->GetWidth() / pTexture->GetTextureWidth();
    vertex[2].texCoord.y = vertex[3].texCoord.y = (float) pTexture->GetHeight() / pTexture->GetTextureHeight();
  }
  else
  {
    vertex[1].texCoord.x = vertex[2].texCoord.x = 1.0f;
    vertex[2].texCoord.y = vertex[3].texCoord.y = 1.0f;
  }
  vertex[4] = vertex[0]; // Not used when pTexture != NULL

  CGUIShaderDX* pGUIShader = DX::Windowing()->GetGUIShader();
  pGUIShader->Begin(SHADER_METHOD_RENDER_TEXTURE_BLEND);

  // Set state to render the image
  if (pTexture)
  {
    pTexture->LoadToGPU();
    CDXTexture* dxTexture = reinterpret_cast<CDXTexture*>(pTexture);
    ID3D11ShaderResourceView* shaderRes = dxTexture->GetShaderResource();
    pGUIShader->SetShaderViews(1, &shaderRes);
    pGUIShader->DrawQuad(vertex[0], vertex[1], vertex[2], vertex[3]);
  }
  else
  {
    if (!UpdateVertexBuffer(vertex))
      return;

    ComPtr<ID3D11DeviceContext> pContext = DX::DeviceResources::Get()->GetD3DContext();

    unsigned stride = sizeof(Vertex);
    unsigned offset = 0;
    pContext->IASetVertexBuffers(0, 1, m_vb.GetAddressOf(), &stride, &offset);
    pContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_LINESTRIP);

    pGUIShader->Draw(5, 0);
    pGUIShader->RestoreBuffers();
  }

#elif defined(HAS_GL)
  CRenderSystemGL *renderSystem = dynamic_cast<CRenderSystemGL*>(CServiceBroker::GetRenderSystem());
  if (pTexture)
  {
    pTexture->LoadToGPU();
    pTexture->BindToUnit(0);

    glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
    glEnable(GL_BLEND);

    renderSystem->EnableShader(SM_TEXTURE);
  }
  else
  {
    renderSystem->EnableShader(SM_DEFAULT);
  }

  float u1 = 0, u2 = 1, v1 = 0, v2 = 1;
  if (pTexture)
  {
    u2 = (float)pTexture->GetWidth() / pTexture->GetTextureWidth();
    v2 = (float)pTexture->GetHeight() / pTexture->GetTextureHeight();
  }

  GLubyte colour[4];
  GLubyte idx[4] = {0, 1, 3, 2};  //determines order of the vertices
  GLuint vertexVBO;
  GLuint indexVBO;
  struct PackedVertex
  {
    float x, y, z;
    float u1, v1;
  } vertex[4];

  // Setup vertex position values
  vertex[0].x = x[0];
  vertex[0].y = y[0];
  vertex[0].z = 0;
  vertex[0].u1 = u1;
  vertex[0].v1 = v1;

  vertex[1].x = x[1];
  vertex[1].y = y[1];
  vertex[1].z = 0;
  vertex[1].u1 = u2;
  vertex[1].v1 = v1;

  vertex[2].x = x[2];
//.........这里部分代码省略.........

void CSlideShowPic::Render(float *x, float *y, CBaseTexture* pTexture, color_t color)
{
#ifdef HAS_DX
  static const DWORD FVF_VERTEX = D3DFVF_XYZ | D3DFVF_DIFFUSE | D3DFVF_TEX1;

  Vertex vertex[5];
  for (int i = 0; i < 4; i++)
  {
    vertex[i].pos = XMFLOAT3( x[i], y[i], 0);
    CD3DHelper::XMStoreColor(&vertex[i].color, color);
    vertex[i].texCoord = XMFLOAT2(0.0f, 0.0f);
    vertex[i].texCoord2 = XMFLOAT2(0.0f, 0.0f);
  }

  if (pTexture)
  {
    vertex[1].texCoord.x = vertex[2].texCoord.x = (float) pTexture->GetWidth() / pTexture->GetTextureWidth();
    vertex[2].texCoord.y = vertex[3].texCoord.y = (float) pTexture->GetHeight() / pTexture->GetTextureHeight();
  }
  else
  {
    vertex[1].texCoord.x = vertex[2].texCoord.x = 1.0f;
    vertex[2].texCoord.y = vertex[3].texCoord.y = 1.0f;
  }
  vertex[4] = vertex[0]; // Not used when pTexture != NULL

  CGUIShaderDX* pGUIShader = g_Windowing.GetGUIShader();
  pGUIShader->Begin(SHADER_METHOD_RENDER_TEXTURE_BLEND);

  // Set state to render the image
  if (pTexture)
  {
    pTexture->LoadToGPU();
    CDXTexture* dxTexture = reinterpret_cast<CDXTexture*>(pTexture);
    ID3D11ShaderResourceView* shaderRes = dxTexture->GetShaderResource();
    pGUIShader->SetShaderViews(1, &shaderRes);
    pGUIShader->DrawQuad(vertex[0], vertex[1], vertex[2], vertex[3]);
  }
  else
  {
    if (!UpdateVertexBuffer(vertex))
      return;

    ID3D11DeviceContext* pContext = g_Windowing.Get3D11Context();

    unsigned stride = sizeof(Vertex);
    unsigned offset = 0;
    pContext->IASetVertexBuffers(0, 1, &m_vb, &stride, &offset);
    pContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_LINESTRIP);

    pGUIShader->Draw(5, 0);
    pGUIShader->RestoreBuffers();
  }

#elif defined(HAS_GL)
  if (pTexture)
  {
    int unit = 0;
    pTexture->LoadToGPU();
    pTexture->BindToUnit(unit++);

    glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
    glEnable(GL_BLEND);          // Turn Blending On

    // diffuse coloring
    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
    glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE);
    glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_RGB, GL_TEXTURE0);
    glTexEnvf(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR);
    glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE1_RGB, GL_PRIMARY_COLOR);
    glTexEnvf(GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR);

    if(g_Windowing.UseLimitedColor())
    {
      // compress range
      pTexture->BindToUnit(unit++); // dummy bind
      const GLfloat rgba1[4] = {(235.0 - 16.0f) / 255.0f, (235.0 - 16.0f) / 255.0f, (235.0 - 16.0f) / 255.0f, 1.0f};
      glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE , GL_COMBINE);
      glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, rgba1);
      glTexEnvi (GL_TEXTURE_ENV, GL_COMBINE_RGB , GL_MODULATE);
      glTexEnvi (GL_TEXTURE_ENV, GL_SOURCE0_RGB , GL_PREVIOUS);
      glTexEnvi (GL_TEXTURE_ENV, GL_SOURCE1_RGB , GL_CONSTANT);
      glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND0_RGB , GL_SRC_COLOR);
      glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND1_RGB , GL_SRC_COLOR);
      glTexEnvi (GL_TEXTURE_ENV, GL_COMBINE_ALPHA , GL_REPLACE);
      glTexEnvi (GL_TEXTURE_ENV, GL_SOURCE0_ALPHA , GL_PREVIOUS);

      // transition
      pTexture->BindToUnit(unit++); // dummy bind
      const GLfloat rgba2[4] = {16.0f / 255.0f, 16.0f / 255.0f, 16.0f / 255.0f, 0.0f};
      glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE , GL_COMBINE);
      glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, rgba2);
      glTexEnvi (GL_TEXTURE_ENV, GL_COMBINE_RGB , GL_ADD);
      glTexEnvi (GL_TEXTURE_ENV, GL_SOURCE0_RGB , GL_PREVIOUS);
      glTexEnvi (GL_TEXTURE_ENV, GL_SOURCE1_RGB , GL_CONSTANT);
      glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND0_RGB , GL_SRC_COLOR);
      glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND1_RGB , GL_SRC_COLOR);
      glTexEnvi (GL_TEXTURE_ENV, GL_COMBINE_ALPHA , GL_REPLACE);
      glTexEnvi (GL_TEXTURE_ENV, GL_SOURCE0_ALPHA , GL_PREVIOUS);
    }
//.........这里部分代码省略.........