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Tech ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES - Use vertex attributes and matrices in shaders. 1st installment.

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Shader: flat - Default bed
This commit is contained in:
enricoturri1966 2022-02-28 10:41:01 +01:00
parent 2379588196
commit a5ff37013b
6 changed files with 105 additions and 13 deletions
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10
resources/shaders/flat_attr.vs Normal file
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@ -0,0 +1,10 @@
#version 110
attribute vec3 v_position;
uniform mat4 projection_view_model_matrix;
void main()
{
gl_Position = projection_view_model_matrix * vec4(v_position, 1.0);
}

2
src/libslic3r/Technologies.hpp
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@ -70,6 +70,8 @@
#define ENABLE_GLBEGIN_GLEND_REMOVAL (1 && ENABLE_2_5_0_ALPHA1)
// Enable replace GLIndexedVertexArray with GLModel
#define ENABLE_GLINDEXEDVERTEXARRAY_REMOVAL (1 && ENABLE_GLBEGIN_GLEND_REMOVAL)
// Enable using vertex attributes and matrices in shaders
#define ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES (1 && ENABLE_GLBEGIN_GLEND_REMOVAL)
// Enable show non-manifold edges
#define ENABLE_SHOW_NON_MANIFOLD_EDGES (1 && ENABLE_2_5_0_ALPHA1)
// Enable rework of Reload from disk command

15
src/slic3r/GUI/3DBed.cpp
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@ -11,6 +11,10 @@
#include "GUI_App.hpp"
#include "GLCanvas3D.hpp"
#if ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
#include "Plater.hpp"
#include "Camera.hpp"
#endif // ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
#include <GL/glew.h>
@ -384,7 +388,7 @@ void Bed3D::init_gridlines()
init_data.reserve_vertices(2 * gridlines.size());
init_data.reserve_indices(2 * gridlines.size());
for (const Line& l : gridlines) {
for (const Slic3r::Line& l : gridlines) {
init_data.add_vertex(Vec3f(unscale<float>(l.a.x()), unscale<float>(l.a.y()), GROUND_Z));
init_data.add_vertex(Vec3f(unscale<float>(l.b.x()), unscale<float>(l.b.y()), GROUND_Z));
const unsigned int vertices_counter = (unsigned int)init_data.vertices_count();
@ -694,10 +698,19 @@ void Bed3D::render_default(bool bottom, bool picking)
init_gridlines();
init_triangles();
#if ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
GLShaderProgram* shader = wxGetApp().get_shader("flat_attr");
#else
GLShaderProgram* shader = wxGetApp().get_shader("flat");
#endif // ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
if (shader != nullptr) {
shader->start_using();
#if ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
const Transform3d matrix = wxGetApp().plater()->get_camera().get_projection_view_matrix();
shader->set_uniform("projection_view_model_matrix", matrix);
#endif // ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
glsafe(::glEnable(GL_DEPTH_TEST));
glsafe(::glEnable(GL_BLEND));
glsafe(::glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA));

3
src/slic3r/GUI/Camera.hpp
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@ -78,6 +78,9 @@ public:
const std::array<int, 4>& get_viewport() const { return m_viewport; }
const Transform3d& get_view_matrix() const { return m_view_matrix; }
const Transform3d& get_projection_matrix() const { return m_projection_matrix; }
#if ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
Transform3d get_projection_view_matrix() const { return m_projection_matrix * m_view_matrix; }
#endif // ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
Vec3d get_dir_right() const { return m_view_matrix.matrix().block(0, 0, 3, 3).row(0); }
Vec3d get_dir_up() const { return m_view_matrix.matrix().block(0, 0, 3, 3).row(1); }

61
src/slic3r/GUI/GLModel.cpp
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@ -982,17 +982,64 @@ void GLModel::render(const std::pair<size_t, size_t>& range)
glsafe(::glBindBuffer(GL_ARRAY_BUFFER, m_render_data.vbo_id));
#if ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
bool use_attributes = boost::algorithm::iends_with(shader->get_name(), "_attr");
int position_id = -1;
int normal_id = -1;
int tex_coord_id = -1;
#endif // ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
if (position) {
#if ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
if (use_attributes) {
position_id = shader->get_attrib_location("v_position");
if (position_id != -1) {
glsafe(::glVertexAttribPointer(position_id, Geometry::position_stride_floats(data.format), GL_FLOAT, GL_FALSE, vertex_stride_bytes, (GLvoid*)Geometry::position_offset_bytes(data.format)));
glsafe(::glEnableVertexAttribArray(position_id));
}
}
else {
#endif // ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
glsafe(::glVertexPointer(Geometry::position_stride_floats(data.format), GL_FLOAT, vertex_stride_bytes, (const void*)Geometry::position_offset_bytes(data.format)));
glsafe(::glEnableClientState(GL_VERTEX_ARRAY));
#if ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
}
#endif // ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
}
if (normal) {
#if ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
if (use_attributes) {
normal_id = shader->get_attrib_location("v_normal");
if (normal_id != -1) {
glsafe(::glVertexAttribPointer(normal_id, Geometry::normal_stride_floats(data.format), GL_FLOAT, GL_FALSE, vertex_stride_bytes, (GLvoid*)Geometry::normal_offset_bytes(data.format)));
glsafe(::glEnableVertexAttribArray(normal_id));
}
}
else {
#endif // ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
glsafe(::glNormalPointer(GL_FLOAT, vertex_stride_bytes, (const void*)Geometry::normal_offset_bytes(data.format)));
glsafe(::glEnableClientState(GL_NORMAL_ARRAY));
#if ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
}
#endif // ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
}
if (tex_coord) {
#if ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
if (use_attributes) {
tex_coord_id = shader->get_attrib_location("v_tex_coord");
if (tex_coord_id != -1) {
glsafe(::glVertexAttribPointer(tex_coord_id, Geometry::tex_coord_stride_floats(data.format), GL_FLOAT, GL_FALSE, vertex_stride_bytes, (GLvoid*)Geometry::tex_coord_offset_bytes(data.format)));
glsafe(::glEnableVertexAttribArray(tex_coord_id));
}
}
else {
#endif // ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
glsafe(::glTexCoordPointer(Geometry::tex_coord_stride_floats(data.format), GL_FLOAT, vertex_stride_bytes, (const void*)Geometry::tex_coord_offset_bytes(data.format)));
glsafe(::glEnableClientState(GL_TEXTURE_COORD_ARRAY));
#if ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
}
#endif // ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
}
shader->set_uniform("uniform_color", data.color);
@ -1001,12 +1048,26 @@ void GLModel::render(const std::pair<size_t, size_t>& range)
glsafe(::glDrawElements(mode, range.second - range.first, index_type, (const void*)(range.first * Geometry::index_stride_bytes(data.format))));
glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0));
#if ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
if (use_attributes) {
if (tex_coord_id != -1)
glsafe(::glDisableVertexAttribArray(tex_coord_id));
if (normal_id != -1)
glsafe(::glDisableVertexAttribArray(normal_id));
if (position_id != -1)
glsafe(::glDisableVertexAttribArray(position_id));
}
else {
#endif // ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
if (tex_coord)
glsafe(::glDisableClientState(GL_TEXTURE_COORD_ARRAY));
if (normal)
glsafe(::glDisableClientState(GL_NORMAL_ARRAY));
if (position)
glsafe(::glDisableClientState(GL_VERTEX_ARRAY));
#if ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
}
#endif // ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
glsafe(::glBindBuffer(GL_ARRAY_BUFFER, 0));
}

3
src/slic3r/GUI/GLShadersManager.cpp
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@ -36,6 +36,9 @@ std::pair<bool, std::string> GLShadersManager::init()
#if ENABLE_GLBEGIN_GLEND_REMOVAL
// basic shader, used to render all what was previously rendered using the immediate mode
valid &= append_shader("flat", { "flat.vs", "flat.fs" });
#if ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
valid &= append_shader("flat_attr", { "flat_attr.vs", "flat.fs" });
#endif // ENABLE_GLBEGIN_GLEND_SHADERS_ATTRIBUTES
// basic shader for textures, used to render textures
valid &= append_shader("flat_texture", { "flat_texture.vs", "flat_texture.fs" });
// used to render 3D scene background