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Lightprepass: Handle skybox ourselves

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This commit is contained in:
Vincent Lejeune 2014-01-26 20:28:21 +01:00
parent 41a9b14859
commit 270c2e2c52
3 changed files with 110 additions and 10 deletions
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2
src/graphics/irr_driver.cpp
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@ -1145,6 +1145,7 @@ scene::ISceneNode *IrrDriver::addSkyDome(video::ITexture *texture,
float texture_percent,
float sphere_percent)
{
Log::error("skybox", "Using deprecated SkyDome");
return m_scene_manager->addSkyDomeSceneNode(texture, hori_res, vert_res,
texture_percent,
sphere_percent);
@ -1164,6 +1165,7 @@ scene::ISceneNode *IrrDriver::addSkyDome(video::ITexture *texture,
scene::ISceneNode *IrrDriver::addSkyBox(const std::vector<video::ITexture*>
&texture)
{
SkyboxTextures = texture;
return m_scene_manager->addSkyBoxSceneNode(texture[0], texture[1],
texture[2], texture[3],
texture[4], texture[5]);

3
src/graphics/irr_driver.hpp
View File

@ -112,6 +112,8 @@ private:
/** Matrixes used in several places stored here to avoid recomputation. */
core::matrix4 m_ViewMatrix, m_ProjMatrix, m_InvProjMatrix, m_ProjViewMatrix, m_InvProjViewMatrix;
std::vector<video::ITexture *> SkyboxTextures;
/** Flag to indicate if a resolution change is pending (which will be
* acted upon in the next update). None means no change, yes means
* change to new resolution and trigger confirmation dialog.
@ -206,6 +208,7 @@ private:
std::vector<GlowData>& glows,
const core::aabbox3df& cambox,
int cam);
void renderSkybox();
void renderLights(const core::aabbox3df& cambox,
scene::ICameraSceneNode * const camnode,
video::SOverrideMaterial &overridemat,

115
src/graphics/render.cpp
View File

@ -248,16 +248,12 @@ void IrrDriver::renderGLSL(float dt)
PROFILER_POP_CPU_MARKER();
if (!bgnodes)
{
PROFILER_PUSH_CPU_MARKER("- Skybox", 0xFF, 0x00, 0xFF);
// If there are no BG nodes, it's more efficient to do the skybox here.
m_renderpass = scene::ESNRP_SKY_BOX;
m_scene_manager->drawAll(m_renderpass);
PROFILER_POP_CPU_MARKER();
}
if (!SkyboxTextures.empty())
{
PROFILER_PUSH_CPU_MARKER("- Skybox", 0xFF, 0x00, 0xFF);
renderSkybox();
PROFILER_POP_CPU_MARKER();
}
PROFILER_PUSH_CPU_MARKER("- Lensflare/godray", 0x00, 0xFF, 0xFF);
// Is the lens flare enabled & visible? Check last frame's query.
@ -808,6 +804,105 @@ void IrrDriver::renderLights(const core::aabbox3df& cambox,
m_video_driver->setRenderTarget(m_rtts->getRTT(RTT_COLOR), false, false);
}
static GLuint cubevao = 0;
static GLuint cubevbo;
static GLuint cubeidx;
static void createcubevao()
{
// From CSkyBoxSceneNode. Not optimal at all
float corners[] =
{
// top side
1., 1., -1., 1., 1.,
1., 1., 1., 0., 1.,
-1., 1., 1., 0., 0.,
-1., 1., -1., 1., 0.,
// Bottom side
1., -1., 1., 0., 0.,
1., -1., -1., 1., 0.,
-1., -1., -1., 1., 1.,
-1., -1., 1., 0., 1.,
// right side
1., -1, -1, 1., 1.,
1., -1, 1, 0., 1.,
1., 1., 1., 0., 0.,
1., 1., -1., 1., 0.,
// left side
-1., -1., 1., 1., 1.,
-1., -1., -1., 0., 1.,
-1., 1., -1., 0., 0.,
-1., 1., 1., 1., 0.,
// back side
-1., -1., -1., 1., 1.,
1., -1, -1., 0., 1.,
1, 1, -1., 0., 0.,
-1, 1, -1., 1., 0.,
// front side
1., -1., 1., 1., 1.,
-1., -1., 1., 0., 1.,
-1, 1., 1., 0., 0.,
1., 1., 1., 1., 0.,
};
int indices[] = {
0, 1, 2, 2, 3, 0,
4, 5, 6, 6, 7, 4,
8, 9, 10, 10, 11, 8,
12, 13, 14, 14, 15, 12,
16, 17, 18, 18, 19, 16,
20, 21, 22, 22, 23, 20
};
glGenBuffers(1, &cubevbo);
glGenBuffers(1, &cubeidx);
glGenVertexArrays(1, &cubevao);
glBindVertexArray(cubevao);
glBindBuffer(GL_ARRAY_BUFFER, cubevbo);
glBufferData(GL_ARRAY_BUFFER, 6 * 5 * 4 * sizeof(float), corners, GL_STATIC_DRAW);
glEnableVertexAttribArray(MeshShader::ObjectUnlitShader::attrib_position);
glEnableVertexAttribArray(MeshShader::ObjectUnlitShader::attrib_texcoord);
glVertexAttribPointer(MeshShader::ObjectUnlitShader::attrib_position, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), 0);
glVertexAttribPointer(MeshShader::ObjectUnlitShader::attrib_texcoord, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (GLvoid *)(3 * sizeof(float)));
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, cubeidx);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, 6 * 6 * sizeof(int), indices, GL_STATIC_DRAW);
}
void IrrDriver::renderSkybox()
{
scene::ICameraSceneNode *camera = m_scene_manager->getActiveCamera();
if (!cubevao)
createcubevao();
glBindVertexArray(cubevao);
glDisable(GL_CULL_FACE);
assert(SkyboxTextures.size() == 6);
core::matrix4 transform = irr_driver->getProjViewMatrix();
core::matrix4 translate;
translate.setTranslation(camera->getAbsolutePosition());
// Draw the sky box between the near and far clip plane
const f32 viewDistance = (camera->getNearValue() + camera->getFarValue()) * 0.5f;
core::matrix4 scale;
scale.setScale(core::vector3df(viewDistance, viewDistance, viewDistance));
transform *= translate * scale;
for (unsigned i = 0; i < 6; i++)
{
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, static_cast<irr::video::COpenGLTexture*>(SkyboxTextures[i])->getOpenGLTextureName());
glUseProgram(MeshShader::ObjectUnlitShader::Program);
MeshShader::ObjectUnlitShader::setUniforms(transform, 0);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, (GLvoid*) (6 * i * sizeof(int)));
}
glBindVertexArray(0);
}
// ----------------------------------------------------------------------------
void IrrDriver::renderDisplacement(video::SOverrideMaterial &overridemat,