mirror of
https://git.shylie.info/shylie/glerminal.git
synced 2024-11-12 21:10:04 +00:00
Initial commit
This commit is contained in:
commit
06e756dd2c
1
.gitignore
vendored
Normal file
1
.gitignore
vendored
Normal file
@ -0,0 +1 @@
|
||||
build/
|
3
.gitmodules
vendored
Normal file
3
.gitmodules
vendored
Normal file
@ -0,0 +1,3 @@
|
||||
[submodule "glfw"]
|
||||
path = glfw
|
||||
url = https://git.shylie.info/shylie/glfw.git
|
55
CMakeLists.txt
Normal file
55
CMakeLists.txt
Normal file
@ -0,0 +1,55 @@
|
||||
cmake_minimum_required(VERSION 3.28)
|
||||
|
||||
project(glerminal
|
||||
VERSION 0.1.0
|
||||
LANGUAGES C CXX
|
||||
)
|
||||
|
||||
add_subdirectory(glfw)
|
||||
|
||||
add_library(glerminal STATIC
|
||||
include/glerminal.h
|
||||
|
||||
source/glerminal-private.h
|
||||
source/glerminal.cpp
|
||||
|
||||
source/glad/glad.h
|
||||
source/KHR/khrplatform.h
|
||||
source/glad.c
|
||||
)
|
||||
|
||||
set_target_properties(glerminal
|
||||
PROPERTIES
|
||||
CXX_STANDARD 11
|
||||
)
|
||||
|
||||
target_include_directories(glerminal
|
||||
PUBLIC
|
||||
include
|
||||
PRIVATE
|
||||
source
|
||||
)
|
||||
|
||||
target_link_libraries(glerminal
|
||||
PUBLIC
|
||||
glfw
|
||||
)
|
||||
|
||||
target_compile_definitions(glerminal
|
||||
PUBLIC
|
||||
GLERMINAL_VERSION=${PROJECT_VERSION}
|
||||
GLERMINAL_VERSION_MAJOR=${PROJECT_VERSION_MAJOR}
|
||||
GLERMINAL_VERSION_MINOR=${PROJECT_VERSION_MINOR}
|
||||
GLERMINAL_VERSION_PATCH=${PROJECT_VERSION_PATCH}
|
||||
)
|
||||
|
||||
if (MSVC)
|
||||
target_link_options(glerminal
|
||||
PUBLIC
|
||||
"/ENTRY:mainCRTStartup"
|
||||
)
|
||||
endif()
|
||||
|
||||
if (PROJECT_IS_TOP_LEVEL)
|
||||
add_subdirectory(examples examples)
|
||||
endif()
|
19
LICENSE
Normal file
19
LICENSE
Normal file
@ -0,0 +1,19 @@
|
||||
zlib License
|
||||
|
||||
(C) 2024 Shylie
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
12
examples/CMakeLists.txt
Normal file
12
examples/CMakeLists.txt
Normal file
@ -0,0 +1,12 @@
|
||||
cmake_minimum_required(VERSION 3.28)
|
||||
|
||||
set(CMAKE_FOLDER examples)
|
||||
|
||||
add_executable(basic WIN32
|
||||
basic.cpp
|
||||
)
|
||||
|
||||
target_link_libraries(basic
|
||||
PRIVATE
|
||||
glerminal
|
||||
)
|
6
examples/basic.cpp
Normal file
6
examples/basic.cpp
Normal file
@ -0,0 +1,6 @@
|
||||
#include <glerminal.h>
|
||||
|
||||
int main(int argc, char** argv)
|
||||
{
|
||||
glerminal_run(glerminal_flush);
|
||||
}
|
1
glfw
Submodule
1
glfw
Submodule
@ -0,0 +1 @@
|
||||
Subproject commit b35641f4a3c62aa86a0b3c983d163bc0fe36026d
|
19
include/glerminal.h
Normal file
19
include/glerminal.h
Normal file
@ -0,0 +1,19 @@
|
||||
#ifndef GLERMINAL_H
|
||||
#define GLERMINAL_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C"
|
||||
{
|
||||
#endif
|
||||
|
||||
typedef void (*glerminal_main_cb)();
|
||||
|
||||
void glerminal_run(glerminal_main_cb main);
|
||||
|
||||
void glerminal_flush();
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif//GLERMINAL_H
|
311
source/KHR/khrplatform.h
Normal file
311
source/KHR/khrplatform.h
Normal file
@ -0,0 +1,311 @@
|
||||
#ifndef __khrplatform_h_
|
||||
#define __khrplatform_h_
|
||||
|
||||
/*
|
||||
** Copyright (c) 2008-2018 The Khronos Group Inc.
|
||||
**
|
||||
** Permission is hereby granted, free of charge, to any person obtaining a
|
||||
** copy of this software and/or associated documentation files (the
|
||||
** "Materials"), to deal in the Materials without restriction, including
|
||||
** without limitation the rights to use, copy, modify, merge, publish,
|
||||
** distribute, sublicense, and/or sell copies of the Materials, and to
|
||||
** permit persons to whom the Materials are furnished to do so, subject to
|
||||
** the following conditions:
|
||||
**
|
||||
** The above copyright notice and this permission notice shall be included
|
||||
** in all copies or substantial portions of the Materials.
|
||||
**
|
||||
** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||||
** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
||||
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||||
** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
|
||||
*/
|
||||
|
||||
/* Khronos platform-specific types and definitions.
|
||||
*
|
||||
* The master copy of khrplatform.h is maintained in the Khronos EGL
|
||||
* Registry repository at https://github.com/KhronosGroup/EGL-Registry
|
||||
* The last semantic modification to khrplatform.h was at commit ID:
|
||||
* 67a3e0864c2d75ea5287b9f3d2eb74a745936692
|
||||
*
|
||||
* Adopters may modify this file to suit their platform. Adopters are
|
||||
* encouraged to submit platform specific modifications to the Khronos
|
||||
* group so that they can be included in future versions of this file.
|
||||
* Please submit changes by filing pull requests or issues on
|
||||
* the EGL Registry repository linked above.
|
||||
*
|
||||
*
|
||||
* See the Implementer's Guidelines for information about where this file
|
||||
* should be located on your system and for more details of its use:
|
||||
* http://www.khronos.org/registry/implementers_guide.pdf
|
||||
*
|
||||
* This file should be included as
|
||||
* #include <KHR/khrplatform.h>
|
||||
* by Khronos client API header files that use its types and defines.
|
||||
*
|
||||
* The types in khrplatform.h should only be used to define API-specific types.
|
||||
*
|
||||
* Types defined in khrplatform.h:
|
||||
* khronos_int8_t signed 8 bit
|
||||
* khronos_uint8_t unsigned 8 bit
|
||||
* khronos_int16_t signed 16 bit
|
||||
* khronos_uint16_t unsigned 16 bit
|
||||
* khronos_int32_t signed 32 bit
|
||||
* khronos_uint32_t unsigned 32 bit
|
||||
* khronos_int64_t signed 64 bit
|
||||
* khronos_uint64_t unsigned 64 bit
|
||||
* khronos_intptr_t signed same number of bits as a pointer
|
||||
* khronos_uintptr_t unsigned same number of bits as a pointer
|
||||
* khronos_ssize_t signed size
|
||||
* khronos_usize_t unsigned size
|
||||
* khronos_float_t signed 32 bit floating point
|
||||
* khronos_time_ns_t unsigned 64 bit time in nanoseconds
|
||||
* khronos_utime_nanoseconds_t unsigned time interval or absolute time in
|
||||
* nanoseconds
|
||||
* khronos_stime_nanoseconds_t signed time interval in nanoseconds
|
||||
* khronos_boolean_enum_t enumerated boolean type. This should
|
||||
* only be used as a base type when a client API's boolean type is
|
||||
* an enum. Client APIs which use an integer or other type for
|
||||
* booleans cannot use this as the base type for their boolean.
|
||||
*
|
||||
* Tokens defined in khrplatform.h:
|
||||
*
|
||||
* KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
|
||||
*
|
||||
* KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
|
||||
* KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
|
||||
*
|
||||
* Calling convention macros defined in this file:
|
||||
* KHRONOS_APICALL
|
||||
* KHRONOS_APIENTRY
|
||||
* KHRONOS_APIATTRIBUTES
|
||||
*
|
||||
* These may be used in function prototypes as:
|
||||
*
|
||||
* KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
|
||||
* int arg1,
|
||||
* int arg2) KHRONOS_APIATTRIBUTES;
|
||||
*/
|
||||
|
||||
#if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC)
|
||||
# define KHRONOS_STATIC 1
|
||||
#endif
|
||||
|
||||
/*-------------------------------------------------------------------------
|
||||
* Definition of KHRONOS_APICALL
|
||||
*-------------------------------------------------------------------------
|
||||
* This precedes the return type of the function in the function prototype.
|
||||
*/
|
||||
#if defined(KHRONOS_STATIC)
|
||||
/* If the preprocessor constant KHRONOS_STATIC is defined, make the
|
||||
* header compatible with static linking. */
|
||||
# define KHRONOS_APICALL
|
||||
#elif defined(_WIN32)
|
||||
# define KHRONOS_APICALL __declspec(dllimport)
|
||||
#elif defined (__SYMBIAN32__)
|
||||
# define KHRONOS_APICALL IMPORT_C
|
||||
#elif defined(__ANDROID__)
|
||||
# define KHRONOS_APICALL __attribute__((visibility("default")))
|
||||
#else
|
||||
# define KHRONOS_APICALL
|
||||
#endif
|
||||
|
||||
/*-------------------------------------------------------------------------
|
||||
* Definition of KHRONOS_APIENTRY
|
||||
*-------------------------------------------------------------------------
|
||||
* This follows the return type of the function and precedes the function
|
||||
* name in the function prototype.
|
||||
*/
|
||||
#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
|
||||
/* Win32 but not WinCE */
|
||||
# define KHRONOS_APIENTRY __stdcall
|
||||
#else
|
||||
# define KHRONOS_APIENTRY
|
||||
#endif
|
||||
|
||||
/*-------------------------------------------------------------------------
|
||||
* Definition of KHRONOS_APIATTRIBUTES
|
||||
*-------------------------------------------------------------------------
|
||||
* This follows the closing parenthesis of the function prototype arguments.
|
||||
*/
|
||||
#if defined (__ARMCC_2__)
|
||||
#define KHRONOS_APIATTRIBUTES __softfp
|
||||
#else
|
||||
#define KHRONOS_APIATTRIBUTES
|
||||
#endif
|
||||
|
||||
/*-------------------------------------------------------------------------
|
||||
* basic type definitions
|
||||
*-----------------------------------------------------------------------*/
|
||||
#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
|
||||
|
||||
|
||||
/*
|
||||
* Using <stdint.h>
|
||||
*/
|
||||
#include <stdint.h>
|
||||
typedef int32_t khronos_int32_t;
|
||||
typedef uint32_t khronos_uint32_t;
|
||||
typedef int64_t khronos_int64_t;
|
||||
typedef uint64_t khronos_uint64_t;
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
/*
|
||||
* To support platform where unsigned long cannot be used interchangeably with
|
||||
* inptr_t (e.g. CHERI-extended ISAs), we can use the stdint.h intptr_t.
|
||||
* Ideally, we could just use (u)intptr_t everywhere, but this could result in
|
||||
* ABI breakage if khronos_uintptr_t is changed from unsigned long to
|
||||
* unsigned long long or similar (this results in different C++ name mangling).
|
||||
* To avoid changes for existing platforms, we restrict usage of intptr_t to
|
||||
* platforms where the size of a pointer is larger than the size of long.
|
||||
*/
|
||||
#if defined(__SIZEOF_LONG__) && defined(__SIZEOF_POINTER__)
|
||||
#if __SIZEOF_POINTER__ > __SIZEOF_LONG__
|
||||
#define KHRONOS_USE_INTPTR_T
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#elif defined(__VMS ) || defined(__sgi)
|
||||
|
||||
/*
|
||||
* Using <inttypes.h>
|
||||
*/
|
||||
#include <inttypes.h>
|
||||
typedef int32_t khronos_int32_t;
|
||||
typedef uint32_t khronos_uint32_t;
|
||||
typedef int64_t khronos_int64_t;
|
||||
typedef uint64_t khronos_uint64_t;
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
|
||||
#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
|
||||
|
||||
/*
|
||||
* Win32
|
||||
*/
|
||||
typedef __int32 khronos_int32_t;
|
||||
typedef unsigned __int32 khronos_uint32_t;
|
||||
typedef __int64 khronos_int64_t;
|
||||
typedef unsigned __int64 khronos_uint64_t;
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
|
||||
#elif defined(__sun__) || defined(__digital__)
|
||||
|
||||
/*
|
||||
* Sun or Digital
|
||||
*/
|
||||
typedef int khronos_int32_t;
|
||||
typedef unsigned int khronos_uint32_t;
|
||||
#if defined(__arch64__) || defined(_LP64)
|
||||
typedef long int khronos_int64_t;
|
||||
typedef unsigned long int khronos_uint64_t;
|
||||
#else
|
||||
typedef long long int khronos_int64_t;
|
||||
typedef unsigned long long int khronos_uint64_t;
|
||||
#endif /* __arch64__ */
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
|
||||
#elif 0
|
||||
|
||||
/*
|
||||
* Hypothetical platform with no float or int64 support
|
||||
*/
|
||||
typedef int khronos_int32_t;
|
||||
typedef unsigned int khronos_uint32_t;
|
||||
#define KHRONOS_SUPPORT_INT64 0
|
||||
#define KHRONOS_SUPPORT_FLOAT 0
|
||||
|
||||
#else
|
||||
|
||||
/*
|
||||
* Generic fallback
|
||||
*/
|
||||
#include <stdint.h>
|
||||
typedef int32_t khronos_int32_t;
|
||||
typedef uint32_t khronos_uint32_t;
|
||||
typedef int64_t khronos_int64_t;
|
||||
typedef uint64_t khronos_uint64_t;
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* Types that are (so far) the same on all platforms
|
||||
*/
|
||||
typedef signed char khronos_int8_t;
|
||||
typedef unsigned char khronos_uint8_t;
|
||||
typedef signed short int khronos_int16_t;
|
||||
typedef unsigned short int khronos_uint16_t;
|
||||
|
||||
/*
|
||||
* Types that differ between LLP64 and LP64 architectures - in LLP64,
|
||||
* pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
|
||||
* to be the only LLP64 architecture in current use.
|
||||
*/
|
||||
#ifdef KHRONOS_USE_INTPTR_T
|
||||
typedef intptr_t khronos_intptr_t;
|
||||
typedef uintptr_t khronos_uintptr_t;
|
||||
#elif defined(_WIN64)
|
||||
typedef signed long long int khronos_intptr_t;
|
||||
typedef unsigned long long int khronos_uintptr_t;
|
||||
#else
|
||||
typedef signed long int khronos_intptr_t;
|
||||
typedef unsigned long int khronos_uintptr_t;
|
||||
#endif
|
||||
|
||||
#if defined(_WIN64)
|
||||
typedef signed long long int khronos_ssize_t;
|
||||
typedef unsigned long long int khronos_usize_t;
|
||||
#else
|
||||
typedef signed long int khronos_ssize_t;
|
||||
typedef unsigned long int khronos_usize_t;
|
||||
#endif
|
||||
|
||||
#if KHRONOS_SUPPORT_FLOAT
|
||||
/*
|
||||
* Float type
|
||||
*/
|
||||
typedef float khronos_float_t;
|
||||
#endif
|
||||
|
||||
#if KHRONOS_SUPPORT_INT64
|
||||
/* Time types
|
||||
*
|
||||
* These types can be used to represent a time interval in nanoseconds or
|
||||
* an absolute Unadjusted System Time. Unadjusted System Time is the number
|
||||
* of nanoseconds since some arbitrary system event (e.g. since the last
|
||||
* time the system booted). The Unadjusted System Time is an unsigned
|
||||
* 64 bit value that wraps back to 0 every 584 years. Time intervals
|
||||
* may be either signed or unsigned.
|
||||
*/
|
||||
typedef khronos_uint64_t khronos_utime_nanoseconds_t;
|
||||
typedef khronos_int64_t khronos_stime_nanoseconds_t;
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Dummy value used to pad enum types to 32 bits.
|
||||
*/
|
||||
#ifndef KHRONOS_MAX_ENUM
|
||||
#define KHRONOS_MAX_ENUM 0x7FFFFFFF
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Enumerated boolean type
|
||||
*
|
||||
* Values other than zero should be considered to be true. Therefore
|
||||
* comparisons should not be made against KHRONOS_TRUE.
|
||||
*/
|
||||
typedef enum {
|
||||
KHRONOS_FALSE = 0,
|
||||
KHRONOS_TRUE = 1,
|
||||
KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
|
||||
} khronos_boolean_enum_t;
|
||||
|
||||
#endif /* __khrplatform_h_ */
|
1833
source/glad.c
Normal file
1833
source/glad.c
Normal file
File diff suppressed because it is too large
Load Diff
3694
source/glad/glad.h
Normal file
3694
source/glad/glad.h
Normal file
File diff suppressed because it is too large
Load Diff
46
source/glerminal-private.h
Normal file
46
source/glerminal-private.h
Normal file
@ -0,0 +1,46 @@
|
||||
#ifndef TERMG_PRIVATE_H
|
||||
#define TERMG_PRIVATE_H
|
||||
|
||||
#include "glerminal.h"
|
||||
|
||||
#include <glad/glad.h>
|
||||
#include <GLFW/glfw3.h>
|
||||
|
||||
#include <stdexcept>
|
||||
|
||||
namespace glerminal
|
||||
{
|
||||
class glerminal
|
||||
{
|
||||
public:
|
||||
glerminal(glerminal_main_cb main);
|
||||
~glerminal();
|
||||
|
||||
glerminal(const glerminal&) = delete;
|
||||
glerminal(glerminal&&) = delete;
|
||||
|
||||
glerminal& operator=(const glerminal&) = delete;
|
||||
glerminal& operator=(glerminal&&) = delete;
|
||||
|
||||
void run();
|
||||
|
||||
void flush();
|
||||
|
||||
private:
|
||||
GLFWwindow* m_window;
|
||||
|
||||
unsigned int m_vbo;
|
||||
unsigned int m_vao;
|
||||
unsigned int m_program;
|
||||
|
||||
glerminal_main_cb m_main;
|
||||
|
||||
void init_glfw();
|
||||
void init_gl();
|
||||
|
||||
void deinit_glfw();
|
||||
void deinit_gl();
|
||||
};
|
||||
}
|
||||
|
||||
#endif//TERMG_PRIVATE_H
|
231
source/glerminal.cpp
Normal file
231
source/glerminal.cpp
Normal file
@ -0,0 +1,231 @@
|
||||
#include "glerminal-private.h"
|
||||
|
||||
#include <iostream>
|
||||
|
||||
namespace
|
||||
{
|
||||
glerminal::glerminal* GLERMINAL_G = nullptr;
|
||||
|
||||
constexpr float VBO_VERTICES[] =
|
||||
{
|
||||
// first triangle
|
||||
0.5f, 0.5f, // top right
|
||||
0.5f, -0.5f, // bottom right
|
||||
-0.5f, 0.5f, // top left
|
||||
|
||||
// second triangle
|
||||
0.5f, -0.5f, // bottom right
|
||||
-0.5f, -0.5f, // bottom left
|
||||
-0.5f, 0.5f // top left
|
||||
};
|
||||
|
||||
constexpr char* VERTEX_SHADER_SOURCE =
|
||||
"#version 330 core\n"
|
||||
"layout (location = 0) in vec2 pos;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" gl_Position = vec4(pos.x, pos.y, 0, 1);\n"
|
||||
"}";
|
||||
|
||||
constexpr char* FRAGMENT_SHADER_SOURCE =
|
||||
"#version 330 core\n"
|
||||
"out vec4 FragColor;\n"
|
||||
"\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" FragColor = vec4(1.0f, 0.5f, 0.2f, 1.0f);\n"
|
||||
"}";
|
||||
}
|
||||
|
||||
namespace glerminal
|
||||
{
|
||||
glerminal::glerminal(glerminal_main_cb main) :
|
||||
m_main(main)
|
||||
{
|
||||
if (GLERMINAL_G)
|
||||
{
|
||||
throw std::runtime_error("glerminal is already running.");
|
||||
}
|
||||
|
||||
// unsure if this should be an error
|
||||
if (!m_main)
|
||||
{
|
||||
throw std::runtime_error("No main callback provided.");
|
||||
}
|
||||
|
||||
init_glfw();
|
||||
init_gl();
|
||||
|
||||
GLERMINAL_G = this;
|
||||
}
|
||||
|
||||
glerminal::~glerminal()
|
||||
{
|
||||
deinit_gl();
|
||||
deinit_glfw();
|
||||
|
||||
GLERMINAL_G = nullptr;
|
||||
}
|
||||
|
||||
void glerminal::run()
|
||||
{
|
||||
while (!glfwWindowShouldClose(m_window))
|
||||
{
|
||||
glfwPollEvents();
|
||||
|
||||
m_main();
|
||||
}
|
||||
}
|
||||
|
||||
void glerminal::flush()
|
||||
{
|
||||
glClear(GL_COLOR_BUFFER_BIT);
|
||||
|
||||
glUseProgram(m_program);
|
||||
glBindVertexArray(m_vao);
|
||||
glDrawArrays(GL_TRIANGLES, 0, 6);
|
||||
|
||||
glfwSwapBuffers(m_window);
|
||||
}
|
||||
|
||||
void glerminal::init_glfw()
|
||||
{
|
||||
glfwInit();
|
||||
|
||||
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
|
||||
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
|
||||
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
|
||||
// not resizable for now.
|
||||
//
|
||||
// need to think about how to handle resizing to ensure
|
||||
// that the window stays an integer number of "tiles" large
|
||||
glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
|
||||
|
||||
// non-adjustable size for the same reason as above
|
||||
m_window = glfwCreateWindow(1280, 800, "glerminal", nullptr, nullptr);
|
||||
|
||||
if (!m_window)
|
||||
{
|
||||
throw std::runtime_error("Failed to create glerminal window.");
|
||||
}
|
||||
}
|
||||
|
||||
void glerminal::init_gl()
|
||||
{
|
||||
glfwMakeContextCurrent(m_window);
|
||||
glfwSwapInterval(1);
|
||||
|
||||
if (!gladLoadGLLoader(reinterpret_cast<GLADloadproc>(glfwGetProcAddress)))
|
||||
{
|
||||
throw std::runtime_error("Failed to initialize GLAD.");
|
||||
}
|
||||
|
||||
glViewport(0, 0, 1280, 800);
|
||||
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
|
||||
|
||||
// -- setup vertex data --
|
||||
// create vertex buffer object
|
||||
glGenBuffers(1, &m_vbo);
|
||||
|
||||
// create vertex array object
|
||||
glGenVertexArrays(1, &m_vao);
|
||||
glBindVertexArray(m_vao);
|
||||
|
||||
// bind buffer and copy data
|
||||
glBindBuffer(GL_ARRAY_BUFFER, m_vbo);
|
||||
glBufferData(GL_ARRAY_BUFFER, sizeof(VBO_VERTICES), VBO_VERTICES, GL_STATIC_DRAW);
|
||||
|
||||
// set up vertex attributes
|
||||
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(float), reinterpret_cast<void*>(0));
|
||||
glEnableVertexAttribArray(0);
|
||||
|
||||
|
||||
// -- setup shader program --
|
||||
// compile
|
||||
const unsigned int vertex_shader = glCreateShader(GL_VERTEX_SHADER);
|
||||
glShaderSource(vertex_shader, 1, &VERTEX_SHADER_SOURCE, nullptr);
|
||||
glCompileShader(vertex_shader);
|
||||
|
||||
const unsigned int fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
|
||||
glShaderSource(fragment_shader, 1, &FRAGMENT_SHADER_SOURCE, nullptr);
|
||||
glCompileShader(fragment_shader);
|
||||
|
||||
int success;
|
||||
char info_log[512] = {};
|
||||
|
||||
// verify
|
||||
glGetShaderiv(vertex_shader, GL_COMPILE_STATUS, &success);
|
||||
if (!success)
|
||||
{
|
||||
glGetShaderInfoLog(vertex_shader, sizeof(info_log) / sizeof(*info_log), nullptr, info_log);
|
||||
glDeleteShader(vertex_shader);
|
||||
glDeleteShader(fragment_shader);
|
||||
|
||||
using namespace std::string_literals;
|
||||
throw std::runtime_error("Could not compile vertex shader: "s + info_log);
|
||||
}
|
||||
|
||||
glGetShaderiv(fragment_shader, GL_COMPILE_STATUS, &success);
|
||||
if (!success)
|
||||
{
|
||||
glGetShaderInfoLog(fragment_shader, sizeof(info_log) / sizeof(*info_log), nullptr, info_log);
|
||||
glDeleteShader(vertex_shader);
|
||||
glDeleteShader(fragment_shader);
|
||||
|
||||
using namespace std::string_literals;
|
||||
throw std::runtime_error("Could not compile fragment shader: "s + info_log);
|
||||
}
|
||||
|
||||
// link
|
||||
m_program = glCreateProgram();
|
||||
glAttachShader(m_program, vertex_shader);
|
||||
glAttachShader(m_program, fragment_shader);
|
||||
glLinkProgram(m_program);
|
||||
glDeleteShader(vertex_shader);
|
||||
glDeleteShader(fragment_shader);
|
||||
|
||||
// verify again
|
||||
glGetProgramiv(m_program, GL_LINK_STATUS, &success);
|
||||
if (!success)
|
||||
{
|
||||
glGetProgramInfoLog(m_program, sizeof(info_log) / sizeof(*info_log), nullptr, info_log);
|
||||
glDeleteProgram(m_program);
|
||||
|
||||
using namespace std::string_literals;
|
||||
throw std::runtime_error("Could not link shader program: "s + info_log);
|
||||
}
|
||||
}
|
||||
|
||||
void glerminal::deinit_glfw()
|
||||
{
|
||||
glDeleteProgram(m_program);
|
||||
|
||||
glfwDestroyWindow(m_window);
|
||||
|
||||
glfwTerminate();
|
||||
}
|
||||
|
||||
void glerminal::deinit_gl()
|
||||
{
|
||||
glDeleteProgram(m_program);
|
||||
}
|
||||
}
|
||||
|
||||
void glerminal_run(glerminal_main_cb main)
|
||||
{
|
||||
try
|
||||
{
|
||||
glerminal::glerminal(main).run();
|
||||
}
|
||||
catch (const std::runtime_error& e)
|
||||
{
|
||||
std::cout << "[glerminal] " << e.what() << std::endl;
|
||||
}
|
||||
}
|
||||
|
||||
void glerminal_flush()
|
||||
{
|
||||
if (!GLERMINAL_G) { return; }
|
||||
|
||||
GLERMINAL_G->flush();
|
||||
}
|
Loading…
Reference in New Issue
Block a user