void ShaderProgram::drawQuad(const DrawQuadData* data)
{
GLfloat* matrix = getTileProjectionMatrix(data);
float opacity = data->opacity();
bool forceBlending = data->forceBlending();
bool enableBlending = forceBlending || opacity < 1.0;
ShaderType shaderType = UndefinedShader;
int textureId = 0;
GLint textureFilter = 0;
GLenum textureTarget = 0;
Color quadColor = data->quadColor();
if (data->pureColor()) {
shaderType = PureColor;
quadColor = shaderColor(quadColor, opacity);
enableBlending = enableBlending || quadColor.hasAlpha();
if (!quadColor.alpha() && enableBlending)
return;
} else {
textureId = data->textureId();
textureFilter = GL_LINEAR;
textureTarget = data->textureTarget();
shaderType = getTextureShaderType(textureTarget, data->hasRepeatScale());
}
setBlendingState(enableBlending);
drawQuadInternal(shaderType, matrix, textureId, opacity,
textureTarget, textureFilter, quadColor, data->fillPortion(),
data->repeatScale());
}
void ShaderProgram::drawQuad(SkRect& geometry, int textureId, float opacity,
GLenum textureTarget, GLint texFilter)
{
if (textureTarget == GL_TEXTURE_2D) {
if (!TilesManager::instance()->invertedScreen()) {
drawQuadInternal(geometry, textureId, opacity, m_program,
m_hProjectionMatrix,
m_hTexSampler, GL_TEXTURE_2D,
m_hPosition, m_hAlpha, texFilter);
} else {
// With the new GPU texture upload path, we do not use an FBO
// to blit the texture we receive from the TexturesGenerator thread.
// To implement inverted rendering, we thus have to do the rendering
// live, by using a different shader.
drawQuadInternal(geometry, textureId, opacity, m_programInverted,
m_hProjectionMatrixInverted,
m_hTexSamplerInverted, GL_TEXTURE_2D,
m_hPositionInverted, m_hAlphaInverted, texFilter,
m_hContrastInverted);
}
} else if (textureTarget == GL_TEXTURE_EXTERNAL_OES
&& !TilesManager::instance()->invertedScreen()) {
drawQuadInternal(geometry, textureId, opacity, m_surfTexOESProgram,
m_hSTOESProjectionMatrix,
m_hSTOESTexSampler, GL_TEXTURE_EXTERNAL_OES,
m_hSTOESPosition, m_hSTOESAlpha, texFilter);
} else if (textureTarget == GL_TEXTURE_EXTERNAL_OES
&& TilesManager::instance()->invertedScreen()) {
drawQuadInternal(geometry, textureId, opacity, m_surfTexOESProgramInverted,
m_hSTOESProjectionMatrixInverted,
m_hSTOESTexSamplerInverted, GL_TEXTURE_EXTERNAL_OES,
m_hSTOESPositionInverted, m_hSTOESAlphaInverted,
texFilter, m_hSTOESContrastInverted);
}
GLUtils::checkGlError("drawQuad");
}
