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Add support for uniform int osg_FrameNumber in GLSL

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This commit is contained in:
rdb 2015-07-17 21:34:29 +02:00
parent 5d7bc2c05e
commit 5e219f6438
2 changed files with 25 additions and 5 deletions
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28
panda/src/glstuff/glShaderContext_src.cxx
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@ -266,6 +266,8 @@ CLP(ShaderContext)(CLP(GraphicsStateGuardian) *glgsg, Shader *s) : ShaderContext
_color_attrib_index = -1;
_transform_table_index = -1;
_slider_table_index = -1;
_frame_number_loc = -1;
_frame_number = -1;
_validated = !gl_validate_shaders;
nassertv(s->get_language() == Shader::SL_GLSL);
@ -941,7 +943,7 @@ reflect_uniform(int i, char *name_buffer, GLsizei name_buflen) {
if (noprefix == "TransformTable") {
if (param_type != GL_FLOAT_MAT4) {
GLCAT.error()
<< "p3d_TransformTable should be uniform mat4\n";
<< "p3d_TransformTable should be uniform mat4[]\n";
return;
}
_transform_table_index = p;
@ -951,7 +953,7 @@ reflect_uniform(int i, char *name_buffer, GLsizei name_buflen) {
if (noprefix == "SliderTable") {
if (param_type != GL_FLOAT) {
GLCAT.error()
<< "p3d_SliderTable should be uniform float\n";
<< "p3d_SliderTable should be uniform float[]\n";
return;
}
_slider_table_index = p;
@ -965,8 +967,6 @@ reflect_uniform(int i, char *name_buffer, GLsizei name_buflen) {
string noprefix(name_buffer + 4);
// These inputs are supported by OpenSceneGraph. We can support
// them as well, to increase compatibility.
// Other inputs we may support in the future:
// int osg_FrameNumber
Shader::ShaderMatSpec bind;
bind._id = arg_id;
@ -983,7 +983,7 @@ reflect_uniform(int i, char *name_buffer, GLsizei name_buflen) {
_shader->_mat_spec.push_back(bind);
return;
} else if (noprefix == "InverseViewMatrix") {
} else if (noprefix == "InverseViewMatrix" || noprefix == "ViewMatrixInverse") {
bind._piece = Shader::SMP_whole;
bind._func = Shader::SMF_compose;
bind._part[0] = Shader::SMO_apiview_to_view;
@ -1012,6 +1012,16 @@ reflect_uniform(int i, char *name_buffer, GLsizei name_buflen) {
bind._dep[1] = Shader::SSD_NONE;
_shader->_mat_spec.push_back(bind);
return;
} else if (noprefix == "FrameNumber") {
// We don't currently support ints with this mechanism,
// so we special-case this one.
if (param_type != GL_INT) {
GLCAT.error() << "osg_FrameNumber should be uniform int\n";
} else {
_frame_number_loc = p;
}
return;
}
} else {
@ -1514,6 +1524,14 @@ issue_parameters(int altered) {
return;
}
if (_frame_number_loc != -1) {
int current_frame = ClockObject::get_global_clock()->get_frame_count();
if (current_frame != _frame_number) {
_glgsg->_glUniform1i(_frame_number_loc, current_frame);
_frame_number = current_frame;
}
}
// Iterate through _ptr parameters
for (int i = 0; i < (int)_shader->_ptr_spec.size(); ++i) {
Shader::ShaderPtrSpec &spec = _shader->_ptr_spec[i];

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

@ -80,6 +80,8 @@ private:
GLint _slider_table_index;
GLsizei _transform_table_size;
GLsizei _slider_table_size;
GLint _frame_number_loc;
GLint _frame_number;
pmap<GLint, GLuint64> _glsl_uniform_handles;
struct ImageInput {