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Add alpha-to-coverage support

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git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@10338 178a84e3-b1eb-0310-8ba1-8eac791a3b58
This commit is contained in:
auria
2011-12-04 19:47:10 +00:00
parent 8940a02b16
commit 7436edaf41
2 changed files with 14 additions and 6 deletions
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18
src/graphics/material.cpp
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@@ -220,6 +220,7 @@ Material::Material(const XMLNode *node, int index)
if (s == "blend") m_alpha_blending = true;
else if (s == "test") m_alpha_testing = true;
else if (s == "additive") m_add = true;
else if (s == "coverage") m_alpha_to_coverage = true;
else if (s != "none")
fprintf(stderr,
"[Material] WARNING: Unknown compositing mode '%s'\n",
@@ -325,6 +326,7 @@ void Material::init(unsigned int index)
m_normal_map = false;
m_parallax_map = false;
m_is_heightmap = false;
m_alpha_to_coverage = false;
m_normal_map_provider = NULL;
m_splatting_provider = NULL;
m_splatting = NULL;
@@ -556,13 +558,17 @@ void Material::setMaterialProperties(video::SMaterial *m)
if (m_alpha_testing)
{
// Note: if EMT_TRANSPARENT_ALPHA_CHANNEL is used, you have to use
// scene_manager->getParameters()->setAttribute(
// scene::ALLOW_ZWRITE_ON_TRANSPARENT, true); and enable
// updates of the Z buffer of the material. Since the _REF
// approach is faster (and looks better imho), this is used for now.
m->MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
modes++;
}
if (m_alpha_to_coverage)
{
m->MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
if (UserConfigParams::m_graphical_effects &&
irr_driver->getVideoDriver()->queryFeature(video::EVDF_ALPHA_TO_COVERAGE))
{
m->AntiAliasing = video::EAAM_QUALITY | video::EAAM_ALPHA_TO_COVERAGE;
}
modes++;
}
if (m_alpha_blending)

2
src/graphics/material.hpp
View File

@@ -108,10 +108,12 @@ private:
/** Texture clamp bitmask */
unsigned int m_clamp_tex;
bool m_lighting;
bool m_sphere_map;
bool m_alpha_testing;
bool m_alpha_blending;
bool m_alpha_to_coverage;
/** True if backface culliing should be enabled. */
bool m_backface_culling;