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gl-color-mask

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This commit is contained in:
David Rose 2002-05-16 18:23:16 +00:00
parent 0c6e867d50
commit 749933b6e3
4 changed files with 18 additions and 33 deletions
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23
panda/src/glgsg/config_glgsg.cxx
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@ -81,20 +81,10 @@ bool gl_supports_bgr = config_glgsg.GetBool("gl-supports-bgr", false);
bool gl_supports_bgr = false;
#endif // GL_BGR
GLDecalType gl_decal_type = GDT_offset;
static GLDecalType
parse_decal_type(const string &type) {
if (type == "mask") {
return GDT_mask;
} else if (type == "blend") {
return GDT_blend;
} else if (type == "offset") {
return GDT_offset;
}
glgsg_cat.error() << "Invalid gl-decal-type: " << type << "\n";
return GDT_offset;
}
// Configure this false if your GL's implementation of glColorMask()
// is broken (some are). This will force the use of a (presumably)
// more expensive blending operation instead.
bool gl_color_mask = config_glgsg.GetBool("gl-color-mask", true);
ConfigureFn(config_glgsg) {
init_libglgsg();
@ -116,11 +106,6 @@ init_libglgsg() {
}
initialized = true;
string decal_type = config_glgsg.GetString("gl-decal-type", "");
if (!decal_type.empty()) {
gl_decal_type = parse_decal_type(decal_type);
}
GLGraphicsStateGuardian::init_type();
GLSavedFrameBuffer::init_type();
GLTextureContext::init_type();

9
panda/src/glgsg/config_glgsg.h
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@ -34,14 +34,7 @@ extern bool gl_save_mipmaps;
extern bool gl_auto_normalize_lighting;
extern bool gl_depth_offset_decals;
extern bool gl_supports_bgr;
// Ways to implement decals.
enum GLDecalType {
GDT_mask, // GL 1.0 style, involving three steps
GDT_blend, // As above, but slower; a hack for broken nVidia driver
GDT_offset // The fastest, using GL 1.1 style glPolygonOffset
};
extern GLDecalType gl_decal_type;
extern bool gl_color_mask;
extern EXPCL_PANDAGL void init_libglgsg();

2
panda/src/glgsg/glGraphicsStateGuardian.I
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@ -287,7 +287,7 @@ call_glStencilFunc(GLenum func,GLint ref,GLuint mask) {
glgsg_cat.debug(false) << "unknown, ";
break;
}
glgsg_cat.debug(false) << ref << mask << ")\n";
glgsg_cat.debug(false) << (int)ref << (unsigned int)mask << ")\n";
#endif
glStencilFunc(func, ref, mask);
}

17
panda/src/glgsg/glGraphicsStateGuardian.cxx
View File

@ -2134,13 +2134,20 @@ issue_color_write(const ColorWriteAttrib *attrib) {
// in set_blend_mode(). However, since GL does support an easy way
// to disable writes to the color buffer, we can take advantage of
// it here.
ColorWriteAttrib::Mode mode = attrib->get_mode();
if (mode == ColorWriteAttrib::M_off) {
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
if (gl_color_mask) {
ColorWriteAttrib::Mode mode = attrib->get_mode();
if (mode == ColorWriteAttrib::M_off) {
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
} else {
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
}
report_errors();
} else {
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
// Some implementations don't seem to handle glColorMask() very
// robustly, however, so we provide this fallback.
GraphicsStateGuardian::issue_color_write(attrib);
}
report_errors();
}
// PandaCompareFunc - 1 + 0x200 === GL_NEVER, etc. order is sequential