1 files changed, 361 insertions, 0 deletions
diff --git a/xbmc/guilib/GUITextureGL.cpp b/xbmc/guilib/GUITextureGL.cpp
new file mode 100644
index 0000000..6e46aa7
--- /dev/null
+++ b/xbmc/guilib/GUITextureGL.cpp
@@ -0,0 +1,361 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include "GUITextureGL.h"
+
+#include "ServiceBroker.h"
+#include "Texture.h"
+#include "rendering/gl/RenderSystemGL.h"
+#include "utils/GLUtils.h"
+#include "utils/Geometry.h"
+#include "utils/log.h"
+#include "windowing/WinSystem.h"
+
+#include <cstddef>
+
+#include "PlatformDefs.h"
+
+void CGUITextureGL::Register()
+{
+  CGUITexture::Register(CGUITextureGL::CreateTexture, CGUITextureGL::DrawQuad);
+}
+
+CGUITexture* CGUITextureGL::CreateTexture(
+    float posX, float posY, float width, float height, const CTextureInfo& texture)
+{
+  return new CGUITextureGL(posX, posY, width, height, texture);
+}
+
+CGUITextureGL::CGUITextureGL(
+    float posX, float posY, float width, float height, const CTextureInfo& texture)
+  : CGUITexture(posX, posY, width, height, texture)
+{
+  m_renderSystem = dynamic_cast<CRenderSystemGL*>(CServiceBroker::GetRenderSystem());
+}
+
+CGUITextureGL* CGUITextureGL::Clone() const
+{
+  return new CGUITextureGL(*this);
+}
+
+void CGUITextureGL::Begin(UTILS::COLOR::Color color)
+{
+  CTexture* texture = m_texture.m_textures[m_currentFrame].get();
+  texture->LoadToGPU();
+  if (m_diffuse.size())
+    m_diffuse.m_textures[0]->LoadToGPU();
+
+  texture->BindToUnit(0);
+
+  // Setup Colors
+  m_col[0] = KODI::UTILS::GL::GetChannelFromARGB(KODI::UTILS::GL::ColorChannel::R, color);
+  m_col[1] = KODI::UTILS::GL::GetChannelFromARGB(KODI::UTILS::GL::ColorChannel::G, color);
+  m_col[2] = KODI::UTILS::GL::GetChannelFromARGB(KODI::UTILS::GL::ColorChannel::B, color);
+  m_col[3] = KODI::UTILS::GL::GetChannelFromARGB(KODI::UTILS::GL::ColorChannel::A, color);
+
+  bool hasAlpha = m_texture.m_textures[m_currentFrame]->HasAlpha() || m_col[3] < 255;
+
+  if (m_diffuse.size())
+  {
+    if (m_col[0] == 255 && m_col[1] == 255 && m_col[2] == 255 && m_col[3] == 255 )
+    {
+      m_renderSystem->EnableShader(ShaderMethodGL::SM_MULTI);
+    }
+    else
+    {
+      m_renderSystem->EnableShader(ShaderMethodGL::SM_MULTI_BLENDCOLOR);
+    }
+
+    hasAlpha |= m_diffuse.m_textures[0]->HasAlpha();
+
+    m_diffuse.m_textures[0]->BindToUnit(1);
+  }
+  else
+  {
+    if (m_col[0] == 255 && m_col[1] == 255 && m_col[2] == 255 && m_col[3] == 255)
+    {
+      m_renderSystem->EnableShader(ShaderMethodGL::SM_TEXTURE_NOBLEND);
+    }
+    else
+    {
+      m_renderSystem->EnableShader(ShaderMethodGL::SM_TEXTURE);
+    }
+  }
+
+  if (hasAlpha)
+  {
+    glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE_MINUS_DST_ALPHA, GL_ONE);
+    glEnable(GL_BLEND);
+  }
+  else
+  {
+    glDisable(GL_BLEND);
+  }
+  m_packedVertices.clear();
+  m_idx.clear();
+}
+
+void CGUITextureGL::End()
+{
+  if (m_packedVertices.size())
+  {
+    GLint posLoc  = m_renderSystem->ShaderGetPos();
+    GLint tex0Loc = m_renderSystem->ShaderGetCoord0();
+    GLint tex1Loc = m_renderSystem->ShaderGetCoord1();
+    GLint uniColLoc = m_renderSystem->ShaderGetUniCol();
+
+    GLuint VertexVBO;
+    GLuint IndexVBO;
+
+    glGenBuffers(1, &VertexVBO);
+    glBindBuffer(GL_ARRAY_BUFFER, VertexVBO);
+    glBufferData(GL_ARRAY_BUFFER, sizeof(PackedVertex)*m_packedVertices.size(), &m_packedVertices[0], GL_STATIC_DRAW);
+
+    if (uniColLoc >= 0)
+    {
+      glUniform4f(uniColLoc,(m_col[0] / 255.0f), (m_col[1] / 255.0f), (m_col[2] / 255.0f), (m_col[3] / 255.0f));
+    }
+
+    if (m_diffuse.size())
+    {
+      glVertexAttribPointer(tex1Loc, 2, GL_FLOAT, 0, sizeof(PackedVertex),
+                            reinterpret_cast<const GLvoid*>(offsetof(PackedVertex, u2)));
+      glEnableVertexAttribArray(tex1Loc);
+    }
+
+    glVertexAttribPointer(posLoc, 3, GL_FLOAT, 0, sizeof(PackedVertex),
+                          reinterpret_cast<const GLvoid*>(offsetof(PackedVertex, x)));
+    glEnableVertexAttribArray(posLoc);
+    glVertexAttribPointer(tex0Loc, 2, GL_FLOAT, 0, sizeof(PackedVertex),
+                          reinterpret_cast<const GLvoid*>(offsetof(PackedVertex, u1)));
+    glEnableVertexAttribArray(tex0Loc);
+
+    glGenBuffers(1, &IndexVBO);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, IndexVBO);
+    glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(ushort)*m_idx.size(), m_idx.data(), GL_STATIC_DRAW);
+
+    glDrawElements(GL_TRIANGLES, m_packedVertices.size()*6 / 4, GL_UNSIGNED_SHORT, 0);
+
+    if (m_diffuse.size())
+      glDisableVertexAttribArray(tex1Loc);
+
+    glDisableVertexAttribArray(posLoc);
+    glDisableVertexAttribArray(tex0Loc);
+
+    glBindBuffer(GL_ARRAY_BUFFER, 0);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+    glDeleteBuffers(1, &VertexVBO);
+    glDeleteBuffers(1, &IndexVBO);
+  }
+
+  if (m_diffuse.size())
+    glActiveTexture(GL_TEXTURE0);
+  glEnable(GL_BLEND);
+
+  m_renderSystem->DisableShader();
+}
+
+void CGUITextureGL::Draw(float *x, float *y, float *z, const CRect &texture, const CRect &diffuse, int orientation)
+{
+  PackedVertex vertices[4];
+
+  // Setup texture coordinates
+  // TopLeft
+  vertices[0].u1 = texture.x1;
+  vertices[0].v1 = texture.y1;
+
+  // TopRight
+  if (orientation & 4)
+  {
+    vertices[1].u1 = texture.x1;
+    vertices[1].v1 = texture.y2;
+  }
+  else
+  {
+    vertices[1].u1 = texture.x2;
+    vertices[1].v1 = texture.y1;
+  }
+
+  // BottomRight
+  vertices[2].u1 = texture.x2;
+  vertices[2].v1 = texture.y2;
+
+  // BottomLeft
+  if (orientation & 4)
+  {
+    vertices[3].u1 = texture.x2;
+    vertices[3].v1 = texture.y1;
+  }
+  else
+  {
+    vertices[3].u1 = texture.x1;
+    vertices[3].v1 = texture.y2;
+  }
+
+  if (m_diffuse.size())
+  {
+    // TopLeft
+    vertices[0].u2 = diffuse.x1;
+    vertices[0].v2 = diffuse.y1;
+
+    // TopRight
+    if (m_info.orientation & 4)
+    {
+      vertices[1].u2 = diffuse.x1;
+      vertices[1].v2 = diffuse.y2;
+    }
+    else
+    {
+      vertices[1].u2 = diffuse.x2;
+      vertices[1].v2 = diffuse.y1;
+    }
+
+    // BottomRight
+    vertices[2].u2 = diffuse.x2;
+    vertices[2].v2 = diffuse.y2;
+
+    // BottomLeft
+    if (m_info.orientation & 4)
+    {
+      vertices[3].u2 = diffuse.x2;
+      vertices[3].v2 = diffuse.y1;
+    }
+    else
+    {
+      vertices[3].u2 = diffuse.x1;
+      vertices[3].v2 = diffuse.y2;
+    }
+  }
+
+  for (int i=0; i<4; i++)
+  {
+    vertices[i].x = x[i];
+    vertices[i].y = y[i];
+    vertices[i].z = z[i];
+    m_packedVertices.push_back(vertices[i]);
+  }
+
+  if ((m_packedVertices.size() / 4) > (m_idx.size() / 6))
+  {
+    size_t i = m_packedVertices.size() - 4;
+    m_idx.push_back(i+0);
+    m_idx.push_back(i+1);
+    m_idx.push_back(i+2);
+    m_idx.push_back(i+2);
+    m_idx.push_back(i+3);
+    m_idx.push_back(i+0);
+  }
+}
+
+void CGUITextureGL::DrawQuad(const CRect& rect,
+                             UTILS::COLOR::Color color,
+                             CTexture* texture,
+                             const CRect* texCoords)
+{
+  CRenderSystemGL *renderSystem = dynamic_cast<CRenderSystemGL*>(CServiceBroker::GetRenderSystem());
+  if (texture)
+  {
+    texture->LoadToGPU();
+    texture->BindToUnit(0);
+  }
+
+  glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
+  glEnable(GL_BLEND);          // Turn Blending On
+
+  VerifyGLState();
+
+  GLubyte col[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];
+
+  if (texture)
+    renderSystem->EnableShader(ShaderMethodGL::SM_TEXTURE);
+  else
+    renderSystem->EnableShader(ShaderMethodGL::SM_DEFAULT);
+
+  GLint posLoc = renderSystem->ShaderGetPos();
+  GLint tex0Loc = renderSystem->ShaderGetCoord0();
+  GLint uniColLoc = renderSystem->ShaderGetUniCol();
+
+  // Setup Colors
+  col[0] = KODI::UTILS::GL::GetChannelFromARGB(KODI::UTILS::GL::ColorChannel::R, color);
+  col[1] = KODI::UTILS::GL::GetChannelFromARGB(KODI::UTILS::GL::ColorChannel::G, color);
+  col[2] = KODI::UTILS::GL::GetChannelFromARGB(KODI::UTILS::GL::ColorChannel::B, color);
+  col[3] = KODI::UTILS::GL::GetChannelFromARGB(KODI::UTILS::GL::ColorChannel::A, color);
+
+  glUniform4f(uniColLoc, col[0] / 255.0f, col[1] / 255.0f, col[2] / 255.0f, col[3] / 255.0f);
+
+  // bottom left
+  vertex[0].x = rect.x1;
+  vertex[0].y = rect.y1;
+  vertex[0].z = 0;
+
+  // bottom right
+  vertex[1].x = rect.x2;
+  vertex[1].y = rect.y1;
+  vertex[1].z = 0;
+
+  // top right
+  vertex[2].x = rect.x2;
+  vertex[2].y = rect.y2;
+  vertex[2].z = 0;
+
+  // top left
+  vertex[3].x = rect.x1;
+  vertex[3].y = rect.y2;
+  vertex[3].z = 0;
+
+  if (texture)
+  {
+    CRect coords = texCoords ? *texCoords : CRect(0.0f, 0.0f, 1.0f, 1.0f);
+    vertex[0].u1 = vertex[3].u1 = coords.x1;
+    vertex[0].v1 = vertex[1].v1 = coords.y1;
+    vertex[1].u1 = vertex[2].u1 = coords.x2;
+    vertex[2].v1 = vertex[3].v1 = coords.y2;
+  }
+
+  glGenBuffers(1, &vertexVBO);
+  glBindBuffer(GL_ARRAY_BUFFER, vertexVBO);
+  glBufferData(GL_ARRAY_BUFFER, sizeof(PackedVertex)*4, &vertex[0], GL_STATIC_DRAW);
+
+  glVertexAttribPointer(posLoc, 3, GL_FLOAT, 0, sizeof(PackedVertex),
+                        reinterpret_cast<const GLvoid*>(offsetof(PackedVertex, x)));
+  glEnableVertexAttribArray(posLoc);
+
+  if (texture)
+  {
+    glVertexAttribPointer(tex0Loc, 2, GL_FLOAT, 0, sizeof(PackedVertex),
+                          reinterpret_cast<const GLvoid*>(offsetof(PackedVertex, u1)));
+    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);
+  if (texture)
+    glDisableVertexAttribArray(tex0Loc);
+
+  glBindBuffer(GL_ARRAY_BUFFER, 0);
+  glDeleteBuffers(1, &vertexVBO);
+  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+  glDeleteBuffers(1, &indexVBO);
+
+  renderSystem->DisableShader();
+}
+