示例#1
0
void COverlayTextureGL::Render(SRenderState& state)
{
  glEnable(GL_BLEND);

  glBindTexture(GL_TEXTURE_2D, m_texture);
  if(m_pma)
    glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
  else
    glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);

  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);

  DRAWRECT rd;
  if (m_pos == POSITION_RELATIVE)
  {
    rd.top     = state.y - state.height * 0.5;
    rd.bottom  = state.y + state.height * 0.5;
    rd.left    = state.x - state.width  * 0.5;
    rd.right   = state.x + state.width  * 0.5;
  }
  else
  {
    rd.top     = state.y;
    rd.bottom  = state.y + state.height;
    rd.left    = state.x;
    rd.right   = state.x + state.width;
  }

#if defined(HAS_GL)
  CRenderSystemGL* renderSystem = dynamic_cast<CRenderSystemGL*>(CServiceBroker::GetRenderSystem());
  renderSystem->EnableShader(SM_TEXTURE);
  GLint posLoc = renderSystem->ShaderGetPos();
  GLint tex0Loc = renderSystem->ShaderGetCoord0();
  GLint uniColLoc = renderSystem->ShaderGetUniCol();

  GLfloat col[4] = {1.0f, 1.0f, 1.0f, 1.0f};

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

  glUniform4f(uniColLoc,(col[0]), (col[1]), (col[2]), (col[3]));

  // Setup vertex position values
  vertex[0].x = rd.left;
  vertex[0].y = rd.top;
  vertex[0].z = 0;
  vertex[0].u1 = 0.0f;
  vertex[0].v1 = 0.0;

  vertex[1].x = rd.right;
  vertex[1].y = rd.top;
  vertex[1].z = 0;
  vertex[1].u1 = m_u;
  vertex[1].v1 = 0.0f;

  vertex[2].x = rd.right;
  vertex[2].y = rd.bottom;
  vertex[2].z = 0;
  vertex[2].u1 = m_u;
  vertex[2].v1 = m_v;

  vertex[3].x = rd.left;
  vertex[3].y = rd.bottom;
  vertex[3].z = 0;
  vertex[3].u1 = 0.0f;
  vertex[3].v1 = m_v;

  glGenBuffers(1, &vertexVBO);
  glBindBuffer(GL_ARRAY_BUFFER, vertexVBO);
  glBufferData(GL_ARRAY_BUFFER, sizeof(PackedVertex)*4, &vertex[0], GL_STATIC_DRAW);

  glVertexAttribPointer(posLoc, 2, GL_FLOAT, 0, sizeof(PackedVertex), BUFFER_OFFSET(offsetof(PackedVertex, x)));
  glVertexAttribPointer(tex0Loc, 2, GL_FLOAT, 0, sizeof(PackedVertex), BUFFER_OFFSET(offsetof(PackedVertex, u1)));

  glEnableVertexAttribArray(posLoc);
  glEnableVertexAttribArray(tex0Loc);

  glGenBuffers(1, &indexVBO);
  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexVBO);
  glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(GLubyte)*4, idx, GL_STATIC_DRAW);

  glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_BYTE, 0);

  glDisableVertexAttribArray(posLoc);
  glDisableVertexAttribArray(tex0Loc);
  glBindBuffer(GL_ARRAY_BUFFER, 0);
  glDeleteBuffers(1, &vertexVBO);
  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
  glDeleteBuffers(1, &indexVBO);

  renderSystem->DisableShader();

#else
  CRenderSystemGLES* renderSystem = dynamic_cast<CRenderSystemGLES*>(CServiceBroker::GetRenderSystem());
  renderSystem->EnableGUIShader(SM_TEXTURE);
  GLint posLoc = renderSystem->GUIShaderGetPos();
  GLint colLoc = renderSystem->GUIShaderGetCol();
  GLint tex0Loc = renderSystem->GUIShaderGetCoord0();
  GLint uniColLoc = renderSystem->GUIShaderGetUniCol();

  GLfloat col[4] = {1.0f, 1.0f, 1.0f, 1.0f};
  GLfloat ver[4][2];
  GLfloat tex[4][2];
  GLubyte idx[4] = {0, 1, 3, 2};        //determines order of triangle strip

  glVertexAttribPointer(posLoc, 2, GL_FLOAT, 0, 0, ver);
  glVertexAttribPointer(colLoc, 4, GL_FLOAT, 0, 0, col);
  glVertexAttribPointer(tex0Loc, 2, GL_FLOAT, 0, 0, tex);

  glEnableVertexAttribArray(posLoc);
  glEnableVertexAttribArray(colLoc);
  glEnableVertexAttribArray(tex0Loc);

  glUniform4f(uniColLoc,(col[0]), (col[1]), (col[2]), (col[3]));
  // Setup vertex position values
  ver[0][0] = ver[3][0] = rd.left;
  ver[0][1] = ver[1][1] = rd.top;
  ver[1][0] = ver[2][0] = rd.right;
  ver[2][1] = ver[3][1] = rd.bottom;

  // Setup texture coordinates
  tex[0][0] = tex[0][1] = tex[1][1] = tex[3][0] = 0.0f;
  tex[1][0] = tex[2][0] = m_u;
  tex[2][1] = tex[3][1] = m_v;

  glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_BYTE, idx);

  glDisableVertexAttribArray(posLoc);
  glDisableVertexAttribArray(colLoc);
  glDisableVertexAttribArray(tex0Loc);

  renderSystem->DisableGUIShader();
#endif

  glDisable(GL_BLEND);

  glBindTexture(GL_TEXTURE_2D, 0);
}
示例#2
0
void COverlayGlyphGL::Render(SRenderState& state)
{
  if ((m_texture == 0) || (m_count == 0))
    return;

  glEnable(GL_BLEND);

  glBindTexture(GL_TEXTURE_2D, m_texture);
  glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);

  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);

  glMatrixModview.Push();
  glMatrixModview->Translatef(state.x, state.y, 0.0f);
  glMatrixModview->Scalef(state.width, state.height, 1.0f);
  glMatrixModview.Load();

#ifdef HAS_GL
  CRenderSystemGL* renderSystem = dynamic_cast<CRenderSystemGL*>(CServiceBroker::GetRenderSystem());
  renderSystem->EnableShader(SM_FONTS);
  GLint posLoc  = renderSystem->ShaderGetPos();
  GLint colLoc  = renderSystem->ShaderGetCol();
  GLint tex0Loc = renderSystem->ShaderGetCoord0();

  std::vector<VERTEX> vecVertices( 6 * m_count);
  VERTEX *vertices = &vecVertices[0];

  for (int i=0; i<m_count*4; i+=4)
  {
    *vertices++ = m_vertex[i];
    *vertices++ = m_vertex[i+1];
    *vertices++ = m_vertex[i+2];

    *vertices++ = m_vertex[i+1];
    *vertices++ = m_vertex[i+3];
    *vertices++ = m_vertex[i+2];
  }
  GLuint VertexVBO;

  glGenBuffers(1, &VertexVBO);
  glBindBuffer(GL_ARRAY_BUFFER, VertexVBO);
  glBufferData(GL_ARRAY_BUFFER, sizeof(VERTEX)*vecVertices.size(), &vecVertices[0], GL_STATIC_DRAW);

  glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, sizeof(VERTEX), BUFFER_OFFSET(offsetof(VERTEX, x)));
  glVertexAttribPointer(colLoc, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(VERTEX), BUFFER_OFFSET(offsetof(VERTEX, r)));
  glVertexAttribPointer(tex0Loc, 2, GL_FLOAT, GL_FALSE, sizeof(VERTEX), BUFFER_OFFSET(offsetof(VERTEX, u)));

  glEnableVertexAttribArray(posLoc);
  glEnableVertexAttribArray(colLoc);
  glEnableVertexAttribArray(tex0Loc);

  glDrawArrays(GL_TRIANGLES, 0, vecVertices.size());

  glDisableVertexAttribArray(posLoc);
  glDisableVertexAttribArray(colLoc);
  glDisableVertexAttribArray(tex0Loc);

  glBindBuffer(GL_ARRAY_BUFFER, 0);
  glDeleteBuffers(1, &VertexVBO);

  renderSystem->DisableShader();

#else
  CRenderSystemGLES* renderSystem = dynamic_cast<CRenderSystemGLES*>(CServiceBroker::GetRenderSystem());
  renderSystem->EnableGUIShader(SM_FONTS);
  GLint posLoc  = renderSystem->GUIShaderGetPos();
  GLint colLoc  = renderSystem->GUIShaderGetCol();
  GLint tex0Loc = renderSystem->GUIShaderGetCoord0();

  // stack object until VBOs will be used
  std::vector<VERTEX> vecVertices( 6 * m_count);
  VERTEX *vertices = &vecVertices[0];

  for (int i=0; i<m_count*4; i+=4)
  {
    *vertices++ = m_vertex[i];
    *vertices++ = m_vertex[i+1];
    *vertices++ = m_vertex[i+2];

    *vertices++ = m_vertex[i+1];
    *vertices++ = m_vertex[i+3];
    *vertices++ = m_vertex[i+2];
  }

  vertices = &vecVertices[0];

  glVertexAttribPointer(posLoc,  3, GL_FLOAT,         GL_FALSE, sizeof(VERTEX), (char*)vertices + offsetof(VERTEX, x));
  glVertexAttribPointer(colLoc,  4, GL_UNSIGNED_BYTE, GL_TRUE,  sizeof(VERTEX), (char*)vertices + offsetof(VERTEX, r));
  glVertexAttribPointer(tex0Loc, 2, GL_FLOAT,         GL_FALSE, sizeof(VERTEX), (char*)vertices + offsetof(VERTEX, u));

  glEnableVertexAttribArray(posLoc);
  glEnableVertexAttribArray(colLoc);
  glEnableVertexAttribArray(tex0Loc);

  glDrawArrays(GL_TRIANGLES, 0, vecVertices.size());

  glDisableVertexAttribArray(posLoc);
  glDisableVertexAttribArray(colLoc);
  glDisableVertexAttribArray(tex0Loc);

  renderSystem->DisableGUIShader();
#endif

  glMatrixModview.PopLoad();

  glDisable(GL_BLEND);

  glBindTexture(GL_TEXTURE_2D, 0);
}