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alessandro bason 2025-10-01 17:08:58 +02:00
commit 53e0268e7a
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build/
*.pdb

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[submodule "src/cglm"]
path = src/cglm
url = https://github.com/recp/cglm
[submodule "src/colla"]
path = src/colla
url = https://git.snarmph.win/snarmph/colla

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# Blender 3.6.23 MTL File: 'lil house.blend'
# www.blender.org
newmtl tileset
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illum 2

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# Blender 3.6.23
# www.blender.org
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# Blender 4.5.3 LTS MTL File: 'None'
# www.blender.org
newmtl M_lam_black
Ns 39.999996
Ka 0.200000 0.200000 0.200000
Kd 0.000000 0.000000 0.000000
Ks 0.500000 0.500000 0.500000
Ke 0.000000 0.000000 0.000000
Ni 1.500000
d 1.000000
illum 3
newmtl M_lam_browngrey
Ns 39.999996
Ka 0.200000 0.200000 0.200000
Kd 0.224800 0.188290 0.178042
Ks 0.500000 0.500000 0.500000
Ke 0.000000 0.000000 0.000000
Ni 1.500000
d 1.000000
illum 3
newmtl M_lam_browngreylighter
Ns 39.999996
Ka 0.200000 0.200000 0.200000
Kd 0.323200 0.283784 0.247571
Ks 0.500000 0.500000 0.500000
Ke 0.000000 0.000000 0.000000
Ni 1.500000
d 1.000000
illum 3
newmtl M_lam_darkgrey
Ns 39.999996
Ka 0.200000 0.200000 0.200000
Kd 0.045600 0.040462 0.037894
Ks 0.500000 0.500000 0.500000
Ke 0.000000 0.000000 0.000000
Ni 1.500000
d 1.000000
illum 3
newmtl M_lam_teal
Ns 39.999996
Ka 0.200000 0.200000 0.200000
Kd 0.022422 0.243757 0.246400
Ks 0.500000 0.500000 0.500000
Ke 0.000000 0.000000 0.000000
Ni 1.500000
d 1.000000
illum 3
newmtl M_plastic_bone
Ns 39.999996
Ka 0.200000 0.200000 0.200000
Kd 0.556560 0.487840 0.354160
Ks 0.500000 0.500000 0.500000
Ke 0.000000 0.000000 0.000000
Ni 1.500000
d 1.000000
illum 3
newmtl M_plastic_bone_shad
Ns 39.999996
Ka 0.200000 0.200000 0.200000
Kd 0.426400 0.376163 0.288246
Ks 0.500000 0.500000 0.500000
Ke 0.000000 0.000000 0.000000
Ni 1.500000
d 1.000000
illum 3
newmtl M_screen_blue
Ns 39.999996
Ka 0.200000 0.200000 0.200000
Kd 0.010400 0.105033 0.800000
Ks 0.500000 0.500000 0.500000
Ke 0.000000 0.000000 0.000000
Ni 1.500000
d 1.000000
illum 3
newmtl M_screen_whitetext
Ns 39.999996
Ka 0.200000 0.200000 0.200000
Kd 0.800000 0.800000 0.800000
Ks 0.500000 0.500000 0.500000
Ke 0.000000 0.000000 0.000000
Ni 1.500000
d 1.000000
illum 3

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#!/usr/bin/env fish
set links -lX11 -lXi -lXcursor -ldl -lpthread -lm -lGL
set options -g -pthread -std=gnu23
set defines -D_GNU_SOURCE
clang -o build/3d src/main.c $options $links || exit 1
build/3d

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Subproject commit a4602f2d5f1f275c02ef608ef27d4021572d9d6c

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#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_ */

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#include "colla/colla.h"
void gl_init(void);
void gl_cleanup(void);
#if COLLA_WIN
#pragma comment(lib, "Opengl32.lib")
// X Macro list of GL function names and signatures
#define GL_FUNCTIONS \
XMACRO(glBindVertexArray, void, (GLuint array)) \
XMACRO(glFramebufferTextureLayer, void, (GLenum target, GLenum attachment, GLuint texture, GLint level, GLint layer)) \
XMACRO(glGenFramebuffers, void, (GLsizei n, GLuint * framebuffers)) \
XMACRO(glBindFramebuffer, void, (GLenum target, GLuint framebuffer)) \
XMACRO(glBindRenderbuffer, void, (GLenum target, GLuint renderbuffer)) \
XMACRO(glGetStringi, const GLubyte *, (GLenum name, GLuint index)) \
XMACRO(glClearBufferfi, void, (GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil)) \
XMACRO(glClearBufferfv, void, (GLenum buffer, GLint drawbuffer, const GLfloat * value)) \
XMACRO(glClearBufferuiv, void, (GLenum buffer, GLint drawbuffer, const GLuint * value)) \
XMACRO(glClearBufferiv, void, (GLenum buffer, GLint drawbuffer, const GLint * value)) \
XMACRO(glDeleteRenderbuffers, void, (GLsizei n, const GLuint * renderbuffers)) \
XMACRO(glUniform1fv, void, (GLint location, GLsizei count, const GLfloat * value)) \
XMACRO(glUniform2fv, void, (GLint location, GLsizei count, const GLfloat * value)) \
XMACRO(glUniform3fv, void, (GLint location, GLsizei count, const GLfloat * value)) \
XMACRO(glUniform4fv, void, (GLint location, GLsizei count, const GLfloat * value)) \
XMACRO(glUniform1iv, void, (GLint location, GLsizei count, const GLint * value)) \
XMACRO(glUniform2iv, void, (GLint location, GLsizei count, const GLint * value)) \
XMACRO(glUniform3iv, void, (GLint location, GLsizei count, const GLint * value)) \
XMACRO(glUniform4iv, void, (GLint location, GLsizei count, const GLint * value)) \
XMACRO(glUniformMatrix4fv, void, (GLint location, GLsizei count, GLboolean transpose, const GLfloat * value)) \
XMACRO(glUseProgram, void, (GLuint program)) \
XMACRO(glShaderSource, void, (GLuint shader, GLsizei count, const GLchar *const* string, const GLint * length)) \
XMACRO(glLinkProgram, void, (GLuint program)) \
XMACRO(glGetUniformLocation, GLint, (GLuint program, const GLchar * name)) \
XMACRO(glGetShaderiv, void, (GLuint shader, GLenum pname, GLint * params)) \
XMACRO(glGetProgramInfoLog, void, (GLuint program, GLsizei bufSize, GLsizei * length, GLchar * infoLog)) \
XMACRO(glGetAttribLocation, GLint, (GLuint program, const GLchar * name)) \
XMACRO(glDisableVertexAttribArray, void, (GLuint index)) \
XMACRO(glDeleteShader, void, (GLuint shader)) \
XMACRO(glDeleteProgram, void, (GLuint program)) \
XMACRO(glCompileShader, void, (GLuint shader)) \
XMACRO(glStencilFuncSeparate, void, (GLenum face, GLenum func, GLint ref, GLuint mask)) \
XMACRO(glStencilOpSeparate, void, (GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass)) \
XMACRO(glRenderbufferStorageMultisample, void, (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height)) \
XMACRO(glDrawBuffers, void, (GLsizei n, const GLenum * bufs)) \
XMACRO(glVertexAttribDivisor, void, (GLuint index, GLuint divisor)) \
XMACRO(glBufferSubData, void, (GLenum target, GLintptr offset, GLsizeiptr size, const void * data)) \
XMACRO(glGenBuffers, void, (GLsizei n, GLuint * buffers)) \
XMACRO(glCheckFramebufferStatus, GLenum, (GLenum target)) \
XMACRO(glFramebufferRenderbuffer, void, (GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer)) \
XMACRO(glCompressedTexImage2D, void, (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void * data)) \
XMACRO(glCompressedTexImage3D, void, (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const void * data)) \
XMACRO(glActiveTexture, void, (GLenum texture)) \
XMACRO(glTexSubImage3D, void, (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const void * pixels)) \
XMACRO(glRenderbufferStorage, void, (GLenum target, GLenum internalformat, GLsizei width, GLsizei height)) \
XMACRO(glGenTextures, void, (GLsizei n, GLuint * textures)) \
XMACRO(glPolygonOffset, void, (GLfloat factor, GLfloat units)) \
XMACRO(glDrawElements, void, (GLenum mode, GLsizei count, GLenum type, const void * indices)) \
XMACRO(glDeleteFramebuffers, void, (GLsizei n, const GLuint * framebuffers)) \
XMACRO(glBlendEquationSeparate, void, (GLenum modeRGB, GLenum modeAlpha)) \
XMACRO(glDeleteTextures, void, (GLsizei n, const GLuint * textures)) \
XMACRO(glGetProgramiv, void, (GLuint program, GLenum pname, GLint * params)) \
XMACRO(glBindTexture, void, (GLenum target, GLuint texture)) \
XMACRO(glTexImage3D, void, (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const void * pixels)) \
XMACRO(glCreateShader, GLuint, (GLenum type)) \
XMACRO(glTexSubImage2D, void, (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const void * pixels)) \
XMACRO(glFramebufferTexture2D, void, (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level)) \
XMACRO(glCreateProgram, GLuint, (void)) \
XMACRO(glViewport, void, (GLint x, GLint y, GLsizei width, GLsizei height)) \
XMACRO(glDeleteBuffers, void, (GLsizei n, const GLuint * buffers)) \
XMACRO(glDrawArrays, void, (GLenum mode, GLint first, GLsizei count)) \
XMACRO(glDrawElementsInstanced, void, (GLenum mode, GLsizei count, GLenum type, const void * indices, GLsizei instancecount)) \
XMACRO(glVertexAttribPointer, void, (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void * pointer)) \
XMACRO(glVertexAttribIPointer, void, (GLuint index, GLint size, GLenum type, GLsizei stride, const void * pointer)) \
XMACRO(glUniform1i, void, (GLint location, GLint v0)) \
XMACRO(glDisable, void, (GLenum cap)) \
XMACRO(glColorMask, void, (GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha)) \
XMACRO(glColorMaski, void, (GLuint buf, GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha)) \
XMACRO(glBindBuffer, void, (GLenum target, GLuint buffer)) \
XMACRO(glDeleteVertexArrays, void, (GLsizei n, const GLuint * arrays)) \
XMACRO(glDepthMask, void, (GLboolean flag)) \
XMACRO(glDrawArraysInstanced, void, (GLenum mode, GLint first, GLsizei count, GLsizei instancecount)) \
XMACRO(glScissor, void, (GLint x, GLint y, GLsizei width, GLsizei height)) \
XMACRO(glGenRenderbuffers, void, (GLsizei n, GLuint * renderbuffers)) \
XMACRO(glBufferData, void, (GLenum target, GLsizeiptr size, const void * data, GLenum usage)) \
XMACRO(glBlendFuncSeparate, void, (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha)) \
XMACRO(glTexParameteri, void, (GLenum target, GLenum pname, GLint param)) \
XMACRO(glGetIntegerv, void, (GLenum pname, GLint * data)) \
XMACRO(glEnable, void, (GLenum cap)) \
XMACRO(glBlitFramebuffer, void, (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter)) \
XMACRO(glStencilMask, void, (GLuint mask)) \
XMACRO(glAttachShader, void, (GLuint program, GLuint shader)) \
XMACRO(glGetError, GLenum, (void)) \
XMACRO(glBlendColor, void, (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha)) \
XMACRO(glTexParameterf, void, (GLenum target, GLenum pname, GLfloat param)) \
XMACRO(glTexParameterfv, void, (GLenum target, GLenum pname, const GLfloat* params)) \
XMACRO(glGetShaderInfoLog, void, (GLuint shader, GLsizei bufSize, GLsizei * length, GLchar * infoLog)) \
XMACRO(glDepthFunc, void, (GLenum func)) \
XMACRO(glStencilOp , void, (GLenum fail, GLenum zfail, GLenum zpass)) \
XMACRO(glStencilFunc, void, (GLenum func, GLint ref, GLuint mask)) \
XMACRO(glEnableVertexAttribArray, void, (GLuint index)) \
XMACRO(glBlendFunc, void, (GLenum sfactor, GLenum dfactor)) \
XMACRO(glReadBuffer, void, (GLenum src)) \
XMACRO(glTexImage2D, void, (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void * pixels)) \
XMACRO(glGenVertexArrays, void, (GLsizei n, GLuint * arrays)) \
XMACRO(glFrontFace, void, (GLenum mode)) \
XMACRO(glCullFace, void, (GLenum mode)) \
XMACRO(glPixelStorei, void, (GLenum pname, GLint param)) \
XMACRO(glBindSampler, void, (GLuint unit, GLuint sampler)) \
XMACRO(glGenSamplers, void, (GLsizei n, GLuint* samplers)) \
XMACRO(glSamplerParameteri, void, (GLuint sampler, GLenum pname, GLint param)) \
XMACRO(glSamplerParameterf, void, (GLuint sampler, GLenum pname, GLfloat param)) \
XMACRO(glSamplerParameterfv, void, (GLuint sampler, GLenum pname, const GLfloat* params)) \
XMACRO(glDeleteSamplers, void, (GLsizei n, const GLuint* samplers)) \
XMACRO(glBindBufferBase, void, (GLenum target, GLuint index, GLuint buffer)) \
XMACRO(glBindBufferRange, void, (GLenum target, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size)) \
XMACRO(glTexImage2DMultisample, void, (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, GLboolean fixedsamplelocations)) \
XMACRO(glTexImage3DMultisample, void, (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLboolean fixedsamplelocations)) \
XMACRO(glDispatchCompute, void, (GLuint num_groups_x, GLuint num_groups_y, GLuint num_groups_z)) \
XMACRO(glMemoryBarrier, void, (GLbitfield barriers)) \
XMACRO(glBindImageTexture, void, (GLuint unit, GLuint texture, GLint level, GLboolean layered, GLint layer, GLenum access, GLenum format)) \
XMACRO(glTexStorage2DMultisample, void, (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, GLboolean fixedsamplelocations)) \
XMACRO(glTexStorage2D, void, (GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height)) \
XMACRO(glTexStorage3DMultisample, void, (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLboolean fixedsamplelocations)) \
XMACRO(glTexStorage3D, void, (GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth)) \
XMACRO(glCompressedTexSubImage2D, void, (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void *data)) \
XMACRO(glCompressedTexSubImage3D, void, (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const void *data)) \
XMACRO(glTextureView, void, (GLuint texture, GLenum target, GLuint origtexture, GLenum internalformat, GLuint minlevel, GLuint numlevels, GLuint minlayer, GLuint numlayers))
#define __gl_h_ 1
#define __gl32_h_ 1
#define __gl31_h_ 1
#define __GL_H__ 1
#define __glext_h_ 1
#define __GLEXT_H_ 1
#define __gltypes_h_ 1
#define __glcorearb_h_ 1
#define __gl_glcorearb_h_ 1
#define GL_APIENTRY APIENTRY
typedef unsigned int GLenum;
typedef unsigned int GLuint;
typedef int GLsizei;
typedef char GLchar;
typedef ptrdiff_t GLintptr;
typedef ptrdiff_t GLsizeiptr;
typedef double GLclampd;
typedef unsigned short GLushort;
typedef unsigned char GLubyte;
typedef unsigned char GLboolean;
typedef uint64_t GLuint64;
typedef double GLdouble;
typedef unsigned short GLhalf;
typedef float GLclampf;
typedef unsigned int GLbitfield;
typedef signed char GLbyte;
typedef short GLshort;
typedef void GLvoid;
typedef int64_t GLint64;
typedef float GLfloat;
typedef int GLint;
#define GL_INT_2_10_10_10_REV 0x8D9F
#define GL_R32F 0x822E
#define GL_PROGRAM_POINT_SIZE 0x8642
#define GL_DEPTH_ATTACHMENT 0x8D00
#define GL_DEPTH_STENCIL_ATTACHMENT 0x821A
#define GL_COLOR_ATTACHMENT2 0x8CE2
#define GL_COLOR_ATTACHMENT0 0x8CE0
#define GL_R16F 0x822D
#define GL_COLOR_ATTACHMENT22 0x8CF6
#define GL_DRAW_FRAMEBUFFER 0x8CA9
#define GL_FRAMEBUFFER_COMPLETE 0x8CD5
#define GL_NUM_EXTENSIONS 0x821D
#define GL_INFO_LOG_LENGTH 0x8B84
#define GL_VERTEX_SHADER 0x8B31
#define GL_INCR 0x1E02
#define GL_DYNAMIC_DRAW 0x88E8
#define GL_STATIC_DRAW 0x88E4
#define GL_TEXTURE_CUBE_MAP_POSITIVE_Z 0x8519
#define GL_TEXTURE_CUBE_MAP 0x8513
#define GL_FUNC_SUBTRACT 0x800A
#define GL_FUNC_REVERSE_SUBTRACT 0x800B
#define GL_CONSTANT_COLOR 0x8001
#define GL_DECR_WRAP 0x8508
#define GL_R8 0x8229
#define GL_LINEAR_MIPMAP_LINEAR 0x2703
#define GL_ELEMENT_ARRAY_BUFFER 0x8893
#define GL_SHORT 0x1402
#define GL_DEPTH_TEST 0x0B71
#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y 0x8518
#define GL_LINK_STATUS 0x8B82
#define GL_TEXTURE_CUBE_MAP_POSITIVE_Y 0x8517
#define GL_SAMPLE_ALPHA_TO_COVERAGE 0x809E
#define GL_RGBA16F 0x881A
#define GL_CONSTANT_ALPHA 0x8003
#define GL_READ_FRAMEBUFFER 0x8CA8
#define GL_TEXTURE0 0x84C0
#define GL_TEXTURE_MIN_LOD 0x813A
#define GL_CLAMP_TO_EDGE 0x812F
#define GL_UNSIGNED_SHORT_5_6_5 0x8363
#define GL_TEXTURE_WRAP_R 0x8072
#define GL_UNSIGNED_SHORT_5_5_5_1 0x8034
#define GL_NEAREST_MIPMAP_NEAREST 0x2700
#define GL_UNSIGNED_SHORT_4_4_4_4 0x8033
#define GL_SRC_ALPHA_SATURATE 0x0308
#define GL_STREAM_DRAW 0x88E0
#define GL_ONE 1
#define GL_NEAREST_MIPMAP_LINEAR 0x2702
#define GL_RGB10_A2 0x8059
#define GL_RGBA8 0x8058
#define GL_SRGB8_ALPHA8 0x8C43
#define GL_COLOR_ATTACHMENT1 0x8CE1
#define GL_RGBA4 0x8056
#define GL_RGB8 0x8051
#define GL_ARRAY_BUFFER 0x8892
#define GL_STENCIL 0x1802
#define GL_TEXTURE_2D 0x0DE1
#define GL_DEPTH 0x1801
#define GL_FRONT 0x0404
#define GL_STENCIL_BUFFER_BIT 0x00000400
#define GL_REPEAT 0x2901
#define GL_RGBA 0x1908
#define GL_TEXTURE_CUBE_MAP_POSITIVE_X 0x8515
#define GL_DECR 0x1E03
#define GL_FRAGMENT_SHADER 0x8B30
#define GL_COMPUTE_SHADER 0x91B9
#define GL_FLOAT 0x1406
#define GL_TEXTURE_MAX_LOD 0x813B
#define GL_DEPTH_COMPONENT 0x1902
#define GL_ONE_MINUS_DST_ALPHA 0x0305
#define GL_COLOR 0x1800
#define GL_TEXTURE_2D_ARRAY 0x8C1A
#define GL_TRIANGLES 0x0004
#define GL_UNSIGNED_BYTE 0x1401
#define GL_TEXTURE_MAG_FILTER 0x2800
#define GL_ONE_MINUS_CONSTANT_ALPHA 0x8004
#define GL_NONE 0
#define GL_SRC_COLOR 0x0300
#define GL_BYTE 0x1400
#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z 0x851A
#define GL_LINE_STRIP 0x0003
#define GL_TEXTURE_3D 0x806F
#define GL_CW 0x0900
#define GL_LINEAR 0x2601
#define GL_RENDERBUFFER 0x8D41
#define GL_GEQUAL 0x0206
#define GL_COLOR_BUFFER_BIT 0x00004000
#define GL_RGBA32F 0x8814
#define GL_BLEND 0x0BE2
#define GL_ONE_MINUS_SRC_ALPHA 0x0303
#define GL_ONE_MINUS_CONSTANT_COLOR 0x8002
#define GL_TEXTURE_WRAP_T 0x2803
#define GL_TEXTURE_WRAP_S 0x2802
#define GL_TEXTURE_MIN_FILTER 0x2801
#define GL_LINEAR_MIPMAP_NEAREST 0x2701
#define GL_EXTENSIONS 0x1F03
#define GL_NO_ERROR 0
#define GL_REPLACE 0x1E01
#define GL_KEEP 0x1E00
#define GL_CCW 0x0901
#define GL_TEXTURE_CUBE_MAP_NEGATIVE_X 0x8516
#define GL_RGB 0x1907
#define GL_TRIANGLE_STRIP 0x0005
#define GL_FALSE 0
#define GL_ZERO 0
#define GL_CULL_FACE 0x0B44
#define GL_INVERT 0x150A
#define GL_INT 0x1404
#define GL_UNSIGNED_INT 0x1405
#define GL_UNSIGNED_SHORT 0x1403
#define GL_NEAREST 0x2600
#define GL_SCISSOR_TEST 0x0C11
#define GL_LEQUAL 0x0203
#define GL_STENCIL_TEST 0x0B90
#define GL_DITHER 0x0BD0
#define GL_DEPTH_COMPONENT32F 0x8CAC
#define GL_EQUAL 0x0202
#define GL_FRAMEBUFFER 0x8D40
#define GL_RGB5 0x8050
#define GL_LINES 0x0001
#define GL_DEPTH_BUFFER_BIT 0x00000100
#define GL_SRC_ALPHA 0x0302
#define GL_INCR_WRAP 0x8507
#define GL_LESS 0x0201
#define GL_MULTISAMPLE 0x809D
#define GL_FRAMEBUFFER_BINDING 0x8CA6
#define GL_BACK 0x0405
#define GL_ALWAYS 0x0207
#define GL_FUNC_ADD 0x8006
#define GL_ONE_MINUS_DST_COLOR 0x0307
#define GL_NOTEQUAL 0x0205
#define GL_DST_COLOR 0x0306
#define GL_COMPILE_STATUS 0x8B81
#define GL_RED 0x1903
#define GL_COLOR_ATTACHMENT3 0x8CE3
#define GL_DST_ALPHA 0x0304
#define GL_RGB5_A1 0x8057
#define GL_GREATER 0x0204
#define GL_POLYGON_OFFSET_FILL 0x8037
#define GL_TRUE 1
#define GL_NEVER 0x0200
#define GL_POINTS 0x0000
#define GL_ONE_MINUS_SRC_COLOR 0x0301
#define GL_MIRRORED_REPEAT 0x8370
#define GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS 0x8B4D
#define GL_R11F_G11F_B10F 0x8C3A
#define GL_UNSIGNED_INT_10F_11F_11F_REV 0x8C3B
#define GL_RGB9_E5 0x8C3D
#define GL_UNSIGNED_INT_5_9_9_9_REV 0x8C3E
#define GL_RGBA32UI 0x8D70
#define GL_RGB32UI 0x8D71
#define GL_RGBA16UI 0x8D76
#define GL_RGB16UI 0x8D77
#define GL_RGBA8UI 0x8D7C
#define GL_RGB8UI 0x8D7D
#define GL_RGBA32I 0x8D82
#define GL_RGB32I 0x8D83
#define GL_RGBA16I 0x8D88
#define GL_RGB16I 0x8D89
#define GL_RGBA8I 0x8D8E
#define GL_RGB8I 0x8D8F
#define GL_RED_INTEGER 0x8D94
#define GL_RG 0x8227
#define GL_RG_INTEGER 0x8228
#define GL_R8 0x8229
#define GL_R16 0x822A
#define GL_RG8 0x822B
#define GL_RG16 0x822C
#define GL_R16F 0x822D
#define GL_R32F 0x822E
#define GL_RG16F 0x822F
#define GL_RG32F 0x8230
#define GL_R8I 0x8231
#define GL_R8UI 0x8232
#define GL_R16I 0x8233
#define GL_R16UI 0x8234
#define GL_R32I 0x8235
#define GL_R32UI 0x8236
#define GL_RG8I 0x8237
#define GL_RG8UI 0x8238
#define GL_RG16I 0x8239
#define GL_RG16UI 0x823A
#define GL_RG32I 0x823B
#define GL_RG32UI 0x823C
#define GL_RGBA_INTEGER 0x8D99
#define GL_R8_SNORM 0x8F94
#define GL_RG8_SNORM 0x8F95
#define GL_RGB8_SNORM 0x8F96
#define GL_RGBA8_SNORM 0x8F97
#define GL_R16_SNORM 0x8F98
#define GL_RG16_SNORM 0x8F99
#define GL_RGB16_SNORM 0x8F9A
#define GL_RGBA16_SNORM 0x8F9B
#define GL_RGBA16 0x805B
#define GL_MAX_TEXTURE_SIZE 0x0D33
#define GL_MAX_CUBE_MAP_TEXTURE_SIZE 0x851C
#define GL_MAX_3D_TEXTURE_SIZE 0x8073
#define GL_MAX_ARRAY_TEXTURE_LAYERS 0x88FF
#define GL_MAX_VERTEX_ATTRIBS 0x8869
#define GL_CLAMP_TO_BORDER 0x812D
#define GL_TEXTURE_BORDER_COLOR 0x1004
#define GL_CURRENT_PROGRAM 0x8B8D
#define GL_MAX_VERTEX_UNIFORM_COMPONENTS 0x8B4A
#define GL_UNPACK_ALIGNMENT 0x0CF5
#define GL_FRAMEBUFFER_SRGB 0x8DB9
#define GL_TEXTURE_COMPARE_MODE 0x884C
#define GL_TEXTURE_COMPARE_FUNC 0x884D
#define GL_COMPARE_REF_TO_TEXTURE 0x884E
#define GL_TEXTURE_CUBE_MAP_SEAMLESS 0x884F
#define GL_TEXTURE_MAX_LEVEL 0x813D
#define GL_FRAMEBUFFER_UNDEFINED 0x8219
#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT 0x8CD6
#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT 0x8CD7
#define GL_FRAMEBUFFER_UNSUPPORTED 0x8CDD
#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE 0x8D56
#define GL_MAJOR_VERSION 0x821B
#define GL_MINOR_VERSION 0x821C
#define GL_TEXTURE_2D_MULTISAMPLE 0x9100
#define GL_TEXTURE_2D_MULTISAMPLE_ARRAY 0x9102
#define GL_SHADER_STORAGE_BARRIER_BIT 0x2000
#define GL_VERTEX_ATTRIB_ARRAY_BARRIER_BIT 0x00000001
#define GL_ELEMENT_ARRAY_BARRIER_BIT 0x00000002
#define GL_TEXTURE_FETCH_BARRIER_BIT 0x00000008
#define GL_SHADER_IMAGE_ACCESS_BARRIER_BIT 0x00000020
#define GL_FRAMEBUFFER_BARRIER_BIT 0x00000400
#define GL_MIN 0x8007
#define GL_MAX 0x8008
#define GL_WRITE_ONLY 0x88B9
#define GL_READ_WRITE 0x88BA
#define GL_MAX_DRAW_BUFFERS 0x8824
#define GL_MAX_TEXTURE_IMAGE_UNITS 0x8872
#define GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS 0x90DD
#define GL_MAX_IMAGE_UNITS 0x8F38
// generate GL function pointer typedefs
#define XMACRO(name, ret, args) typedef ret (GL_APIENTRY* PFN_ ## name) args;
GL_FUNCTIONS
#undef XMACRO
// generate GL function pointers
#define XMACRO(name, ret, args) static PFN_ ## name name;
GL_FUNCTIONS
#undef XMACRO
static PROC gl__dll = NULL;
// helper function to lookup GL functions in GL DLL
typedef PROC (WINAPI * gl__wglGetProcAddress)(LPCSTR);
void* gl__getprocaddr(const char* name, gl__wglGetProcAddress wgl_getprocaddress) {
void* proc_addr = (void *)wgl_getprocaddress(name);
if (!proc_addr) {
proc_addr = (void *)GetProcAddress(gl__dll, name);
}
colla_assert(proc_addr);
return proc_addr;
}
// populate GL function pointers
void gl__load_opengl(void) {
colla_assert(gl__dll == NULL);
gl__dll = LoadLibraryA("opengl32.dll");
colla_assert(gl__dll);
gl__wglGetProcAddress wgl_getprocaddress = (gl__wglGetProcAddress) GetProcAddress(gl__dll, "wglGetProcAddress");
colla_assert(wgl_getprocaddress);
#define XMACRO(name, ret, args) name = (PFN_ ## name) gl__getprocaddr(#name, wgl_getprocaddress);
GL_FUNCTIONS
#undef XMACRO
}
void gl__unload_opengl(void) {
colla_assert(gl__dll);
FreeLibrary(gl__dll);
gl__dll = NULL;
}
void gl_init(void) {
gl__load_opengl();
}
void gl_cleanup(void) {
gl__unload_opengl();
}
#else
void gl_init(void) {
// noop
}
void gl_cleanup(void) {
// noop
}
#endif
#ifndef GL_UNSIGNED_INT_2_10_10_10_REV
#define GL_UNSIGNED_INT_2_10_10_10_REV 0x8368
#endif
#ifndef GL_UNSIGNED_INT_24_8
#define GL_UNSIGNED_INT_24_8 0x84FA
#endif
#ifndef GL_TEXTURE_MAX_ANISOTROPY_EXT
#define GL_TEXTURE_MAX_ANISOTROPY_EXT 0x84FE
#endif
#ifndef GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT
#define GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF
#endif
#ifndef GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
#define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1
#endif
#ifndef GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
#define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT 0x83F2
#endif
#ifndef GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
#define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3
#endif
#ifndef GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
#define GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT 0x8C4F
#endif
#ifndef GL_COMPRESSED_RED_RGTC1
#define GL_COMPRESSED_RED_RGTC1 0x8DBB
#endif
#ifndef GL_COMPRESSED_SIGNED_RED_RGTC1
#define GL_COMPRESSED_SIGNED_RED_RGTC1 0x8DBC
#endif
#ifndef GL_COMPRESSED_RED_GREEN_RGTC2
#define GL_COMPRESSED_RED_GREEN_RGTC2 0x8DBD
#endif
#ifndef GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2
#define GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2 0x8DBE
#endif
#ifndef GL_COMPRESSED_RGBA_BPTC_UNORM_ARB
#define GL_COMPRESSED_RGBA_BPTC_UNORM_ARB 0x8E8C
#endif
#ifndef GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB
#define GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB 0x8E8D
#endif
#ifndef GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB
#define GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB 0x8E8E
#endif
#ifndef GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB
#define GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB 0x8E8F
#endif
#ifndef GL_COMPRESSED_RGB8_ETC2
#define GL_COMPRESSED_RGB8_ETC2 0x9274
#endif
#ifndef GL_COMPRESSED_SRGB8_ETC2
#define GL_COMPRESSED_SRGB8_ETC2 0x9275
#endif
#ifndef GL_COMPRESSED_RGBA8_ETC2_EAC
#define GL_COMPRESSED_RGBA8_ETC2_EAC 0x9278
#endif
#ifndef GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC
#define GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC 0x9279
#endif
#ifndef GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2
#define GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 0x9276
#endif
#ifndef GL_COMPRESSED_R11_EAC
#define GL_COMPRESSED_R11_EAC 0x9270
#endif
#ifndef GL_COMPRESSED_SIGNED_R11_EAC
#define GL_COMPRESSED_SIGNED_R11_EAC 0x9271
#endif
#ifndef GL_COMPRESSED_RG11_EAC
#define GL_COMPRESSED_RG11_EAC 0x9272
#endif
#ifndef GL_COMPRESSED_SIGNED_RG11_EAC
#define GL_COMPRESSED_SIGNED_RG11_EAC 0x9273
#endif
#ifndef GL_COMPRESSED_RGBA_ASTC_4x4_KHR
#define GL_COMPRESSED_RGBA_ASTC_4x4_KHR 0x93B0
#endif
#ifndef GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR
#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR 0x93D0
#endif
#ifndef GL_DEPTH24_STENCIL8
#define GL_DEPTH24_STENCIL8 0x88F0
#endif
#ifndef GL_HALF_FLOAT
#define GL_HALF_FLOAT 0x140B
#endif
#ifndef GL_DEPTH_STENCIL
#define GL_DEPTH_STENCIL 0x84F9
#endif
#ifndef GL_LUMINANCE
#define GL_LUMINANCE 0x1909
#endif
#ifndef GL_COMPUTE_SHADER
#define GL_COMPUTE_SHADER 0x91B9
#endif

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#define COLLA_NO_NET 1
#include "colla/colla.c"
#include "glad/glad.c"
#define SOKOL_GLCORE
#define SOKOL_ASSERT(c) colla_assert(c)
#define SOKOL_IMPL
#include "sokol/sokol_app.h"
#define TINYOBJ_LOADER_C_IMPLEMENTATION
#include "tinyobjloader/tinyobjloader.h"
#define STB_IMAGE_IMPLEMENTATION
#include "stb/stb_image.h"
#include "obj.c"
#include <GL/gl.h>
#define SHADER(...) \
"#version 330 core\n" \
#__VA_ARGS__
const char *vert_shader = SHADER(
layout (location = 0) in vec3 pos;
layout (location = 1) in vec3 norm;
layout (location = 2) in vec3 col;
layout (location = 3) in vec2 uv;
uniform mat4 model;
uniform mat4 view;
uniform mat4 proj;
out vec3 fs_norm;
out vec2 fs_uv;
void main() {
gl_Position = proj * view * model * vec4(pos, 1.0);
fs_norm = norm;
fs_uv = uv;
}
);
const char *frag_shader = SHADER(
in vec3 fs_norm;
in vec2 fs_uv;
out vec4 colour;
uniform sampler2D tex;
void main() {
// colour = vec4(fs_norm * vec3(0.5) + vec3(0.5), 1);
colour = texture(tex, fs_uv);
if (colour.a == 0) discard;
}
);
typedef struct camera_t camera_t;
struct camera_t {
vec3 pos;
vec3 target;
vec3 up;
};
void camera_event(camera_t *cam, const sapp_event *ev) {
const float spd = 10.f;
switch (ev->type) {
case SAPP_EVENTTYPE_KEY_DOWN:
{
int strafe = (ev->key_code == SAPP_KEYCODE_A) - (ev->key_code == SAPP_KEYCODE_D);
int forward = (ev->key_code == SAPP_KEYCODE_S) - (ev->key_code == SAPP_KEYCODE_W);
vec3 fwd = {0};
if (strafe || forward) {
glm_vec3_sub(cam->pos, cam->target, fwd);
glm_vec3_normalize(fwd);
}
if (strafe) {
vec3 right = {0};
glm_vec3_cross(fwd, cam->up, right);
glm_vec3_normalize(right);
float str = (float)strafe * sapp_frame_duration() * spd;
right[0] *= str;
right[1] *= str;
right[2] *= str;
glm_vec3_add(cam->pos, right, cam->pos);
}
if (forward) {
float forw = (float)forward * sapp_frame_duration() * spd;
fwd[0] *= forw;
fwd[1] *= forw;
fwd[2] *= forw;
glm_vec3_add(cam->pos, fwd, cam->pos);
}
break;
}
case SAPP_EVENTTYPE_MOUSE_MOVE:
break;
default: break;
}
}
struct {
arena_t arena;
model_t model;
camera_t cam;
uint model_id;
uint view_id;
uint proj_id;
uint tex_id;
uint prog;
} state = {0};
void gfx__get_file_data_cb(
void *udata,
const char *fname,
int is_mtl,
const char *obj_fname,
char **data,
usize *len
) {
arena_t *arena = udata;
buffer_t buf = os_file_read_all(arena, strv(fname));
*data = (char*)buf.data;
*len = buf.len;
}
uint gfx__compile_shader(int type, const char *src) {
uint shd = glCreateShader(type);
glShaderSource(shd, 1, &src, NULL);
glCompileShader(shd);
int success = 0;
char buf[512];
glGetShaderiv(shd, GL_COMPILE_STATUS, &success);
if (!success) {
glGetShaderInfoLog(shd, arrlen(buf), NULL, buf);
fatal("[shader]: %s", buf);
}
return shd;
}
uint gfx__load_texture(arena_t scratch, strview_t fname) {
buffer_t file_data = os_file_read_all(&scratch, fname);
int w, h;
uchar *data = stbi_load_from_memory(file_data.data, file_data.len, &w, &h, NULL, 4);
if (!data) {
fatal("could not load image %v", fname);
}
uint id = 0l;
glGenTextures(1, &id);
glBindTexture(GL_TEXTURE_2D, id);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
stbi_image_free(data);
return id;
}
void init(void) {
colla_init(COLLA_ALL);
state.arena = arena_make(ARENA_VIRTUAL, GB(1));
gladLoadGL();
stbi_set_flip_vertically_on_load(1);
glEnable(GL_DEPTH_TEST);
glClearColor(0.1f, 0.2f, 0.4f, 1.0f);
float verts[] = {
-.5f, -.5f, .0f,
.5f, -.5f, .5f,
.0f, .5f, .0f
};
uint vert = gfx__compile_shader(GL_VERTEX_SHADER, vert_shader);
uint frag = gfx__compile_shader(GL_FRAGMENT_SHADER, frag_shader);
state.prog = glCreateProgram();
glAttachShader(state.prog, vert);
glAttachShader(state.prog, frag);
glLinkProgram(state.prog);
int success = 0;
char buf[512];
glGetProgramiv(state.prog, GL_LINK_STATUS, &success);
if (!success) {
glGetShaderInfoLog(state.prog, arrlen(buf), NULL, buf);
fatal("[program]: %s", buf);
}
glDeleteShader(vert);
glDeleteShader(frag);
glUseProgram(state.prog);
glActiveTexture(GL_TEXTURE0);
glUniform1i(glGetUniformLocation(state.prog, "tex"), 0);
glUseProgram(0);
state.model = obj_load(&state.arena, strv("assets/lil-house.obj"));
state.model_id = glGetUniformLocation(state.prog, "model");
state.view_id = glGetUniformLocation(state.prog, "view");
state.proj_id = glGetUniformLocation(state.prog, "proj");
state.tex_id = gfx__load_texture(state.arena, strv("assets/tileset.png"));
state.cam = (camera_t){
.pos = { 0, 0, 0, },
.target = { 0, 0, -1, },
.up = { 0, 1, 0, },
};
// state.cam = (camera_t) {
// .pos = v3_zero(),
// .fwd = v3(0, 0, -1),
// .up = v3(0, 1, 0),
// };
}
void frame(void) {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
int width = sapp_width();
int height = sapp_height();
glViewport(0, 0, width, height);
glUseProgram(state.prog);
glBindTexture(GL_TEXTURE_2D, state.tex_id);
static float t = 0.f;
t += (float)sapp_frame_duration() * 100.f;
float f = t; //(sinf(t) * 0.5 + 0.5) * 10.f;
mat4 model = GLM_MAT4_IDENTITY_INIT;
vec3 rot = { 0, 1, 0 };
vec3 model_trans = { 0, -4, -50 };
vec3 model_scale = { 5, 5, 5 };
glm_vec3_normalize(rot);
glm_translate(model, model_trans);
glm_rotate(model, glm_rad(f), rot);
glm_scale(model, model_scale);
mat4 view = GLM_MAT4_IDENTITY_INIT;
glm_lookat(state.cam.pos, state.cam.target, state.cam.up, view);
vec3 trans = { 0, 0, -0.5 };
glm_translate(view, trans);
mat4 proj = GLM_MAT4_IDENTITY_INIT;
glm_perspective(glm_rad(45.f), sapp_widthf() / sapp_heightf(), 0.1f, 100.f, proj);
glUniformMatrix4fv(state.model_id, 1, GL_FALSE, (float*)model);
glUniformMatrix4fv(state.view_id, 1, GL_FALSE, (float*)view);
glUniformMatrix4fv(state.proj_id, 1, GL_FALSE, (float*)proj);
#if 0
float fov = deg_to_rad(60.f);
float aspect = sapp_widthf() / sapp_heightf();
vec3 model_translation = v3(0, -10, f);
mat4 model = m4_identity(); // m4_trans(model_translation);
mat4 proj = m4_proj(pi * 4, aspect, 0.1f, 100.f);
mat4 view = m4_identity(); // cam_lookat(&state.cam);
// mat4 mv = m4_mul(proj, view);
// mat4 mvp = m4_mul(mv, model);
mat4 mv = m4_mul(view, model);
mat4 mvp = m4_mul(proj, mv);
glUniformMatrix4fv(state.matrix_id, 1, GL_TRUE, mvp.data);
#endif
for_each (mesh, state.model.meshes) {
glBindVertexArray(mesh->vao);
glDrawArrays(GL_TRIANGLES, 0, mesh->vcount);
}
glBindVertexArray(0);
glUseProgram(0);
}
void event(const sapp_event *ev) {
switch (ev->type) {
case SAPP_EVENTTYPE_KEY_UP:
switch (ev->key_code) {
case SAPP_KEYCODE_Q:
case SAPP_KEYCODE_ESCAPE:
sapp_quit();
break;
default: break;
}
break;
default: break;
}
camera_event(&state.cam, ev);
}
void cleanup(void) {
}
void sokol_log(const char* tag, uint32_t level, uint32_t id, const char* msg, uint32_t line, const char* fname, void* udata) {
COLLA_UNUSED(id);
COLLA_UNUSED(udata);
os_log_level_e levels[] = { LOG_FATAL, LOG_ERR, LOG_WARN, LOG_INFO };
os_log_print(levels[level], "%s: (%s:%d) %s", tag, fname, line, msg);
}
sapp_desc sokol_main(int argc, char **argv) {
return (sapp_desc) {
.width = 800,
.height = 600,
.init_cb = init,
.frame_cb = frame,
.event_cb = event,
.cleanup_cb = cleanup,
.logger.func = sokol_log,
.win32_console_attach = true,
};
}

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#include "colla/colla.h"
#include "glad/glad.h"
#include "cglm/include/cglm/cglm.h"
#include "cglm/include/cglm/struct.h"
// #include "vecmath.h"
#if 0
ka: ambient
kd: diffuse
ks: specular
ns: specular highlights
ni: optical density
d: dissolve
illum: illumination model
map_kd: color texture file
#endif
typedef struct vertex_t vertex_t;
struct vertex_t {
vec3s pos;
vec3s norm;
vec3s col;
vec2s uv;
};
typedef struct material_t material_t;
struct material_t {
vec3s ambient;
vec3s diffuse;
vec3s specular;
};
typedef struct mesh_t mesh_t;
struct mesh_t {
uint vbo, vao;
int vcount;
material_t *material;
mesh_t *next;
};
typedef struct model_t model_t;
struct model_t {
mesh_t *meshes;
};
#define vec(T) struct { usize len, cap; T *items; }
#define vec_push(v, ...) \
do { \
if ((v)->len + 1 >= (v)->cap) { \
(v)->cap = (v)->cap ? (v)->cap * 2 : 16; \
void *new_items = os_alloc(sizeof(*((v)->items)) * (v)->cap); \
memmove(new_items, (v)->items, sizeof(*((v)->items)) * (v)->len); \
os_free((v)->items); \
(v)->items = new_items; \
} \
(v)->items[(v)->len++] = (__VA_ARGS__); \
} while (0)
#define vec_free(v) os_free((v)->items)
#define vec_resize(v, n) \
do { \
if ((v)->len < (n)) { \
(v)->len = (n); \
} \
while ((v)->cap <= (v)->len) { \
(v)->cap = (v)->cap ? (v)->cap * 2 : 16; \
} \
} while(0)
model_t obj_load(arena_t *arena, strview_t filename) {
model_t out = {0};
arena_t scratch = arena_make(ARENA_MALLOC, MB(1));
str_t obj = os_file_read_all_str(&scratch, filename);
instream_t in = istr_init(strv(obj));
vec(vec3s) positions = {0};
vec(vec3s) normals = {0};
vec(vec3s) colours = {0};
vec(vec2s) texcoords = {0};
vec(vertex_t) verts = {0};
usize cur_v = 0;
usize cur_n = 0;
usize cur_t = 0;
usize cur_c = 0;
#define vert_get(v, i) \
do { \
vec_resize(&verts, i + 1); \
v = &verts.items[i]; \
} while (0)
vec3s v = {0};
vec2s t = {0};
vec_push(&positions, v);
vec_push(&normals, v);
vec_push(&texcoords, t);
while (!istr_is_finished(&in)) {
strview_t line_str = strv_trim(istr_get_line(&in));
instream_t line = istr_init(line_str);
strview_t type = istr_get_view(&line, ' ');
#define IS(v) strv_equals(type, strv(v))
if (type.len == 0) {
continue;
}
if (IS("#")) {
continue;
}
// position
else if (IS("v")) {
istr_get_float(&line, &v.x);
istr_skip_whitespace(&line);
istr_get_float(&line, &v.y);
istr_skip_whitespace(&line);
istr_get_float(&line, &v.z);
vec_push(&positions, v);
}
// normal
else if (IS("vn")) {
istr_get_float(&line, &v.x);
istr_skip_whitespace(&line);
istr_get_float(&line, &v.y);
istr_skip_whitespace(&line);
istr_get_float(&line, &v.z);
vec_push(&normals, v);
}
// tex coord
else if (IS("vt")) {
istr_get_float(&line, &t.u);
istr_skip_whitespace(&line);
istr_get_float(&line, &t.v);
vec_push(&texcoords, t);
}
// triangle
else if (IS("f")) {
int vid, tid, nid;
for (int k = 0; k < 3; ++k) {
istr_get_i32(&line, &vid);
istr_skip(&line, 1);
istr_get_i32(&line, &tid);
istr_skip(&line, 1);
istr_get_i32(&line, &nid);
istr_skip(&line, 1);
vec_push(&verts, (vertex_t){
.pos = positions.items[vid],
.norm = normals.items[nid],
.uv = texcoords.items[tid],
});
}
}
// material name
else if (IS("usemtl")) {
// TODO
}
// material file
else if (IS("mtllib")) {
// TODO: parse mtl
}
}
uint vbo, vao;
glGenBuffers(1, &vbo);
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertex_t) * verts.len, verts.items, GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (void*)offsetof(vertex_t, pos));
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (void*)offsetof(vertex_t, norm));
glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (void*)offsetof(vertex_t, col));
glVertexAttribPointer(3, 2, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (void*)offsetof(vertex_t, uv));
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glEnableVertexAttribArray(2);
glEnableVertexAttribArray(3);
glBindVertexArray(0);
mesh_t *m = alloc(arena, mesh_t);
m->vao = vao;
m->vbo = vbo;
m->vcount = verts.len;
out.meshes = m;
arena_cleanup(&scratch);
vec_free(&positions);
vec_free(&normals);
vec_free(&verts);
return out;
}

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#pragma once
// defines MIN/MAX
#include "colla/colla.h"
#include <math.h>
#define pi 3.14159265359f
#define pi2 6.28318530718f
#define d2r_mul 0.0314159265359f
#define r2d_mul 31.8309886184f
#define deg_to_rad(deg) ((deg) * d2r_mul)
#define rad_to_deg(rad) ((rad) * r2d_mul)
typedef union vec2 vec2;
typedef union vec3 vec3;
typedef union vec4 vec4;
typedef union mat3 mat3;
typedef union mat4 mat4;
typedef union mat3x4 mat3x4;
union vec2 {
float data[2];
struct { float x, y; };
struct { float u, v; };
};
union vec3 {
float data[3];
struct { float x, y, z; };
struct { float r, g, b; };
};
union vec4 {
float data[4];
struct { float x, y, z, w; };
struct { vec3 v3; float v4; };
struct { vec2 pos, size; };
};
union mat3 {
float data[9];
vec3 cols[3];
struct {
float m00, m01, m02;
float m10, m11, m12;
float m20, m21, m22;
};
};
union mat4 {
float data[16];
vec4 cols[4];
struct {
float m00, m01, m02, m03;
float m10, m11, m12, m13;
float m20, m21, m22, m23;
float m30, m31, m32, m33;
};
};
union mat3x4 {
float data[12];
vec4 cols[3];
struct {
float m00, m01, m02;
float m10, m11, m12;
float m20, m21, m22;
float m30, m31, m32;
};
};
// vec2
#define v2(vx, vy) (vec2) { .x = (vx), .y = (vy) }
#define v2_zero() v2(0, 0)
#define v2_value(v) v2(v, v)
#define v2_add(a, b) v2((a).x + (b).x, (a).y + (b).y)
#define v2_sub(a, b) v2((a).x - (b).x, (a).y - (b).y)
#define v2_mul(a, b) v2((a).x * (b).x, (a).y * (b).y)
#define v2_div(a, b) v2((a).x / (b).x, (a).y / (b).y)
#define v2_add_val(vec, val) v2((vec).x + val, (vec).y + val)
#define v2_sub_val(vec, val) v2((vec).x - val, (vec).y - val)
#define v2_mul_val(vec, val) v2((vec).x * val, (vec).y * val)
#define v2_div_val(vec, val) v2((vec).x / val, (vec).y / val)
#define v2_mag2(v) (((v).x * (v).x) + ((v).y * (v).y))
#define v2_mag(v) sqrtf(v2_mag2(v))
#define v2_dot(a, b) (((a).x * (b).x) + ((a).y * (b).y))
inline vec2 v2_norm(vec2 v) {
float mag = v2_mag(v);
return mag ? v2_div_val(v, mag) : v;
}
#define v2_clamp(vmin, vmax, v) v2(MIN(MAX((v).x, (vmin).x), (vmax).x), MIN(MAX((v).y, (vmin).y), (vmax).y))
#define v2_clamp_val(vmin, vmax, v) v2(MIN(MAX((v).x, (vmin)), (vmax)), MIN(MAX((v).y, (vmin)), (vmax)))
// vec3
#define v3(vx, vy, vz) (vec3) { .x = (vx), .y = (vy), .z = (vz) }
#define v3_zero() v3(0, 0, 0)
#define v3_value(v) v3(v, v, v)
#define v3_add(a, b) v3((a).x + (b).x, (a).y + (b).y, (a).z + (b).z)
#define v3_sub(a, b) v3((a).x - (b).x, (a).y - (b).y, (a).z - (b).z)
#define v3_mul(a, b) v3((a).x * (b).x, (a).y * (b).y, (a).z * (b).z)
#define v3_div(a, b) v3((a).x / (b).x, (a).y / (b).y, (a).z / (b).z)
#define v3_add_val(vec, val) v3((vec).x + val, (vec).y + val, (vec).z + val)
#define v3_sub_val(vec, val) v3((vec).x - val, (vec).y - val, (vec).z - val)
#define v3_mul_val(vec, val) v3((vec).x * val, (vec).y * val, (vec).z * val)
#define v3_div_val(vec, val) v3((vec).x / val, (vec).y / val, (vec).z / val)
#define v3_mag2(v) (((v).x * (v).x) + ((v).y * (v).y) + ((v).z * (v).z))
#define v3_mag(v) sqrtf(v3_mag2(v))
#define v3_dot(a, b) (((a).x * (b).x) + ((a).y * (b).y) + ((a).z * (b).z))
#define v3_cross(a, b) v3( \
(a).y * (b).z - (a).z * (b).y,\
(a).z * (b).x - (a).x * (b).z,\
(a).x * (b).y - (a).y * (b).x \
)
inline vec3 v3_norm(vec3 v) {
float mag = v3_mag(v);
return mag ? v3_div_val(v, mag) : v;
}
#define v3_clamp(vmin, vmax, v) v3(MIN(MAX((v).x, (vmin).x), (vmax).x), MIN(MAX((v).y, (vmin).y), (vmax).y), MIN(MAX((v).z, (vmin).z), (vmax).z))
#define v3_clamp_val(vmin, vmax, v) v3(MIN(MAX((v).x, (vmin)), (vmax)), MIN(MAX((v).y, (vmin)), (vmax)), MIN(MAX((v).z, (vmin)), (vmax)))
// vec4
#define v4(vx, vy, vz, vw) (vec4) { .x = (vx), .y = (vy), .z = (vz), .w = (vw) }
#define v4_zero() v4(0, 0, 0, 0)
#define v4_value(v) v4(v, v, v, v)
#define v4_add(a, b) v4((a).x + (b).x, (a).y + (b).y, (a).z + (b).z, (a).w + (b).w)
#define v4_sub(a, b) v4((a).x - (b).x, (a).y - (b).y, (a).z - (b).z, (a).w - (b).w)
#define v4_mul(a, b) v4((a).x * (b).x, (a).y * (b).y, (a).z * (b).z, (a).w * (b).w)
#define v4_div(a, b) v4((a).x / (b).x, (a).y / (b).y, (a).z / (b).z, (a).w / (b).w)
#define v4_add_val(vec, val) v4((vec).x + val, (vec).y + val, (vec).z + val, (vec).w + val)
#define v4_sub_val(vec, val) v4((vec).x - val, (vec).y - val, (vec).z - val, (vec).w - val)
#define v4_mul_val(vec, val) v4((vec).x * val, (vec).y * val, (vec).z * val, (vec).w * val)
#define v4_div_val(vec, val) v4((vec).x / val, (vec).y / val, (vec).z / val, (vec).w / val)
#define v4_mag2(v) (((v).x * (v).x) + ((v).y * (v).y) + ((v).z * (v).z) + ((v).w * (v).w))
#define v4_mag(v) sqrtf(v4_mag2(v))
#define v4_dot(a, b) (((a).x * (b).x) + ((a).y * (b).y) + ((a).z * (b).z) + ((a).w * (b).w))
inline vec4 v4_norm(vec4 v) {
float mag = v4_mag(v);
return mag ? v4_div_val(v, mag) : v;
}
#define v4_clamp(vmin, vmax, v) v4(MIN(MAX((v).x, (vmin).x), (vmax).x), MIN(MAX((v).y, (vmin).y), (vmax).y), MIN(MAX((v).z, (vmin).z), (vmax).z), MIN(MAX((v).w, (vmin).w), (vmax).w))
#define v4_clamp_val(vmin, vmax, v) v4(MIN(MAX((v).x, (vmin)), (vmax)), MIN(MAX((v).y, (vmin)), (vmax)), MIN(MAX((v).z, (vmin)), (vmax)), MIN(MAX((v).w, (vmin)), (vmax)))
// mat3
#define m3(...) (mat3) { __VA_ARGS__ }
#define m3_identity() m3( \
1, 0, 0, \
0, 1, 0, \
0, 0, 1, \
)
#define m3_mul(a, b) m3( \
(a).m00 * (b).m00 + (a).m01 * (b).m10 + (a).m02 * (b).m20, \
(a).m00 * (b).m01 + (a).m01 * (b).m11 + (a).m02 * (b).m21, \
(a).m00 * (b).m02 + (a).m01 * (b).m12 + (a).m02 * (b).m22, \
\
(a).m10 * (b).m00 + (a).m11 * (b).m10 + (a).m12 * (b).m20, \
(a).m10 * (b).m01 + (a).m11 * (b).m11 + (a).m12 * (b).m21, \
(a).m10 * (b).m02 + (a).m11 * (b).m12 + (a).m12 * (b).m22, \
\
(a).m20 * (b).m00 + (a).m21 * (b).m10 + (a).m22 * (b).m20, \
(a).m20 * (b).m01 + (a).m21 * (b).m11 + (a).m22 * (b).m21, \
(a).m20 * (b).m02 + (a).m21 * (b).m12 + (a).m22 * (b).m22, \
)
#define m3_mul_v3(m, v) v3( \
(m).m00 * (v).x + (m).m01 * (v).y + (m).m02 * (v).z, \
(m).m10 * (v).x + (m).m11 * (v).y + (m).m12 * (v).z, \
(m).m20 * (v).x + (m).m21 * (v).y + (m).m22 * (v).z \
)
// mat4
#define m4(...) (mat4) { __VA_ARGS__ }
#define m4_identity() m4( \
1, 0, 0, 0, \
0, 1, 0, 0, \
0, 0, 1, 0, \
0, 0, 0, 1, \
)
#define m4_scale(s) m4( \
(s.x), 0, 0, 0, \
0, (s.y), 0, 0, \
0, 0, (s.z), 0, \
0, 0, 0, 1, \
)
#define m4_scale_val(s) m4( \
(s), 0, 0, 0, \
0, (s), 0, 0, \
0, 0, (s), 0, \
0, 0, 0, 1, \
)
#define m4_trans(t) m4( \
1, 0, 0, (t).x, \
0, 1, 0, (t).y, \
0, 0, 1, (t).z, \
0, 0, 0, 1, \
)
inline mat4 m4_rotx(float angle) {
float c = cosf(angle);
float s = sinf(angle);
return m4(
1, 0, 0, 0,
0, c, -s, 0,
0, s, c, 0,
0, 0, 0, 1,
);
}
inline mat4 m4_roty(float angle) {
float c = cosf(angle);
float s = sinf(angle);
return m4(
c, 0, s, 0,
0, 1, 0, 0,
-s, 0, c, 0,
0, 0, 0, 1,
);
}
inline mat4 m4_rotz(float angle) {
float c = cosf(angle);
float s = sinf(angle);
return m4(
c, -s, 0, 0,
s, c, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1,
);
}
inline mat4 m4_proj(float fovy, float aspect, float znear, float zfar) {
float f = 1.f / tanf(fovy * 0.5f);
float nf = 1.f / (znear - zfar);
mat4 out = m4_identity();
out.m00 = f / aspect;
out.m11 = f;
out.m22 = (znear + zfar) * nf;
out.m23 = -1.f;
out.m33 = 2.f * znear * zfar * nf;
return out;
}
inline mat4 m4_perspective(float fov_rad, float aspect, float zn, float zf) {
float f = 1.f / tanf(fov_rad * 0.5f);
float nf = 1.f / (zn - zf);
return m4(
f / aspect, 0, 0, 0,
0, f, 0, 0,
0, 0, (zf+zn) * nf, (zf * zn * 2) * nf,
0, 0, -1, 0,
);
}
#define m4_mul(a, b) m4( \
/* row 0 */ \
(a).m00 * (b).m00 + (a).m01 * (b).m10 + (a).m02 * (b).m20 + (a).m03 * (b).m30, \
(a).m00 * (b).m01 + (a).m01 * (b).m11 + (a).m02 * (b).m21 + (a).m03 * (b).m31, \
(a).m00 * (b).m02 + (a).m01 * (b).m12 + (a).m02 * (b).m22 + (a).m03 * (b).m32, \
(a).m00 * (b).m03 + (a).m01 * (b).m13 + (a).m02 * (b).m23 + (a).m03 * (b).m33, \
/* row 1 */ \
(a).m10 * (b).m00 + (a).m11 * (b).m10 + (a).m12 * (b).m20 + (a).m13 * (b).m30, \
(a).m10 * (b).m01 + (a).m11 * (b).m11 + (a).m12 * (b).m21 + (a).m13 * (b).m31, \
(a).m10 * (b).m02 + (a).m11 * (b).m12 + (a).m12 * (b).m22 + (a).m13 * (b).m32, \
(a).m10 * (b).m03 + (a).m11 * (b).m13 + (a).m12 * (b).m23 + (a).m13 * (b).m33, \
/* row 2 */ \
(a).m20 * (b).m00 + (a).m21 * (b).m10 + (a).m22 * (b).m20 + (a).m23 * (b).m30, \
(a).m20 * (b).m01 + (a).m21 * (b).m11 + (a).m22 * (b).m21 + (a).m23 * (b).m31, \
(a).m20 * (b).m02 + (a).m21 * (b).m12 + (a).m22 * (b).m22 + (a).m23 * (b).m32, \
(a).m20 * (b).m03 + (a).m21 * (b).m13 + (a).m22 * (b).m23 + (a).m23 * (b).m33, \
/* row 3 */ \
(a).m30 * (b).m00 + (a).m31 * (b).m10 + (a).m32 * (b).m20 + (a).m33 * (b).m30, \
(a).m30 * (b).m01 + (a).m31 * (b).m11 + (a).m32 * (b).m21 + (a).m33 * (b).m31, \
(a).m30 * (b).m02 + (a).m31 * (b).m12 + (a).m32 * (b).m22 + (a).m33 * (b).m32, \
(a).m30 * (b).m03 + (a).m31 * (b).m13 + (a).m32 * (b).m23 + (a).m33 * (b).m33, \
)
#define m4_mul_v4(m, v) v4( \
(m).m00 * (v).x + (m).m01 * (v).y + (m).m02 * (v).z + (m).m03 * (v).w, \
(m).m10 * (v).x + (m).m11 * (v).y + (m).m12 * (v).z + (m).m13 * (v).w, \
(m).m20 * (v).x + (m).m21 * (v).y + (m).m22 * (v).z + (m).m23 * (v).w, \
(m).m30 * (v).x + (m).m31 * (v).y + (m).m32 * (v).z + (m).m33 * (v).w \
)