Add tessellation shader support to the engine

[libs/gl.git] / source / backends / opengl / program_backend.cpp

diff --git a/source/backends/opengl/program_backend.cpp b/source/backends/opengl/program_backend.cpp
index 398d35ce7a6c364aba56634cb7aa0be67ad174d6..3ebb7da1292d8de854a09131a3eb3ece18eb127b 100644 (file)
--- a/source/backends/opengl/program_backend.cpp
+++ b/source/backends/opengl/program_backend.cpp
@@ -8,6 +8,7 @@
 #include <msp/gl/extensions/arb_separate_shader_objects.h>
 #include <msp/gl/extensions/arb_shader_objects.h>
 #include <msp/gl/extensions/arb_uniform_buffer_object.h>
+#include <msp/gl/extensions/arb_tessellation_shader.h>
 #include <msp/gl/extensions/arb_vertex_shader.h>
 #include <msp/gl/extensions/ext_gpu_shader4.h>
 #include <msp/gl/extensions/khr_debug.h>
@@ -80,6 +81,8 @@ unsigned OpenGLProgram::add_stage(Stage type)
        switch(type)
        {
        case VERTEX: { static Require _req(ARB_vertex_shader); gl_type = GL_VERTEX_SHADER; } break;
+       case TESS_CONTROL: { static Require _req(ARB_tessellation_shader); gl_type = GL_TESS_CONTROL_SHADER; } break;
+       case TESS_EVAL: { static Require _req(ARB_tessellation_shader); gl_type = GL_TESS_EVALUATION_SHADER; } break;
        case GEOMETRY: { static Require _req(ARB_geometry_shader4); gl_type = GL_GEOMETRY_SHADER; } break;
        case FRAGMENT: { static Require _req(ARB_fragment_shader); gl_type = GL_FRAGMENT_SHADER; } break;
        case COMPUTE: { static Require _req(ARB_compute_shader); gl_type = GL_COMPUTE_SHADER; } break;
@@ -123,6 +126,8 @@ void OpenGLProgram::add_glsl_stages(const GlslModule &mod, const map<string, int
                switch(st)
                {
                case SL::Stage::VERTEX: stage_id = add_stage(VERTEX); break;
+               case SL::Stage::TESS_CONTROL: stage_id = add_stage(TESS_CONTROL); break;
+               case SL::Stage::TESS_EVAL: stage_id = add_stage(TESS_EVAL); break;
                case SL::Stage::GEOMETRY: stage_id = add_stage(GEOMETRY); break;
                case SL::Stage::FRAGMENT: stage_id = add_stage(FRAGMENT); break;
                case SL::Stage::COMPUTE: stage_id = add_stage(COMPUTE); break;
@@ -229,6 +234,8 @@ void OpenGLProgram::add_spirv_stages(const SpirVModule &mod, const map<string, i
                switch(e.stage)
                {
                case SpirVModule::VERTEX: stage_id = add_stage(VERTEX); break;
+               case SpirVModule::TESS_CONTROL: stage_id = add_stage(TESS_CONTROL); break;
+               case SpirVModule::TESS_EVAL: stage_id = add_stage(TESS_EVAL); break;
                case SpirVModule::GEOMETRY: stage_id = add_stage(GEOMETRY); break;
                case SpirVModule::FRAGMENT: stage_id = add_stage(FRAGMENT); break;
                case SpirVModule::COMPUTE: stage_id = add_stage(COMPUTE); break;
@@ -543,7 +550,7 @@ void OpenGLProgram::set_debug_name(const string &name)
 void OpenGLProgram::set_stage_debug_name(unsigned stage_id, Stage type)
 {
 #ifdef DEBUG
-       static const char *const suffixes[] = { " [VS]", " [GS]", " [FS]", " [CS]" };
+       static const char *const suffixes[] = { " [VS]", " [TCS]", " [TES]", " [GS]", " [FS]", " [CS]" };
        string name = debug_name+suffixes[type];
        glObjectLabel(GL_SHADER, stage_id, name.size(), name.c_str());
 #else