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Fixes for primitive restart index stuff

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This commit is contained in:
rdb 2014-11-04 14:14:49 +00:00
parent 0f35480fcf
commit ce1282c7e3
2 changed files with 32 additions and 15 deletions
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45
panda/src/glstuff/glGraphicsStateGuardian_src.cxx
View File

@ -553,27 +553,27 @@ reset() {
}
#ifndef OPENGLES
_primitive_restart_gl3 = false;
_primitive_restart_nv = false;
_glPrimitiveRestartIndex = NULL;
/*if (is_at_least_gl_version(4, 3) || has_extension("GL_ARB_ES3_compatibility")) {
// As long as we enable this, OpenGL will always use the highest possible index
// for a numeric type as strip cut index, which coincides with our convention.
// This saves us a call to glPrimitiveRestartIndex.
glEnable(GL_PRIMITIVE_RESTART_FIXED_INDEX);
_supported_geom_rendering |= Geom::GR_strip_cut_index;
} else
*/
if (gl_support_primitive_restart_index) {
if (is_at_least_gl_version(3, 1)) {
glEnable(GL_PRIMITIVE_RESTART);
if (is_at_least_gl_version(4, 3) || has_extension("GL_ARB_ES3_compatibility")) {
// As long as we enable this, OpenGL will always use the highest possible index
// for a numeric type as strip cut index, which coincides with our convention.
// This saves us a call to glPrimitiveRestartIndex.
glEnable(GL_PRIMITIVE_RESTART_FIXED_INDEX);
_supported_geom_rendering |= Geom::GR_strip_cut_index;
} else if (is_at_least_gl_version(3, 1)) {
_primitive_restart_gl3 = true;
_supported_geom_rendering |= Geom::GR_strip_cut_index;
_glPrimitiveRestartIndex = (PFNGLPRIMITIVERESTARTINDEXPROC)
get_extension_func("glPrimitiveRestartIndex");
} else if (has_extension("GL_NV_primitive_restart")) {
glEnable(GL_PRIMITIVE_RESTART_NV);
_primitive_restart_nv = true;
_supported_geom_rendering |= Geom::GR_strip_cut_index;
_glPrimitiveRestartIndex = (PFNGLPRIMITIVERESTARTINDEXPROC)
@ -3892,10 +3892,16 @@ draw_linestrips(const GeomPrimitivePipelineReader *reader, bool force) {
(_supported_geom_rendering & GeomEnums::GR_strip_cut_index) != 0) {
// One long triangle strip, connected by strip cut indices.
#ifndef OPENGLES
if (_glPrimitiveRestartIndex != NULL) {
if (_primitive_restart_gl3) {
glEnable(GL_PRIMITIVE_RESTART);
_glPrimitiveRestartIndex(reader->get_strip_cut_index());
} else if (_primitive_restart_nv) {
glEnableClientState(GL_PRIMITIVE_RESTART_NV);
_glPrimitiveRestartIndex(reader->get_strip_cut_index());
}
#endif
#endif // !OPENGLES
cerr << "yeahp\n";
int num_vertices = reader->get_num_vertices();
_vertices_other_pcollector.add_level(num_vertices);
@ -3911,7 +3917,7 @@ draw_linestrips(const GeomPrimitivePipelineReader *reader, bool force) {
get_numeric_type(reader->get_index_type()),
client_pointer, _instance_count);
} else
#endif
#endif // !OPENGLES
{
_glDrawRangeElements(GL_LINE_STRIP,
reader->get_min_vertex(),
@ -3920,6 +3926,15 @@ draw_linestrips(const GeomPrimitivePipelineReader *reader, bool force) {
get_numeric_type(reader->get_index_type()),
client_pointer);
}
#ifndef OPENGLES
if (_primitive_restart_gl3) {
glDisable(GL_PRIMITIVE_RESTART);
} else if (_primitive_restart_nv) {
glDisableClientState(GL_PRIMITIVE_RESTART_NV);
}
#endif // !OPENGLES
} else {
// Send the individual line strips, stepping over the
// strip-cut indices.

2
panda/src/glstuff/glGraphicsStateGuardian_src.h
View File

@ -600,6 +600,8 @@ public:
#ifndef OPENGLES
PFNGLPRIMITIVERESTARTINDEXPROC _glPrimitiveRestartIndex;
bool _primitive_restart_gl3;
bool _primitive_restart_nv;
#endif
bool _supports_vertex_blend;