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Quad

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main
Cameron Murphy Reikes 1 year ago
parent ece3c66550
commit 2f48c9d51a
12 changed files with 40881 additions and 0 deletions
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assets/merchant.png
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11
build_desktop_debug.bat
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@echo off
@REM https://learn.microsoft.com/en-us/cpp/build/reference/compiler-options-listed-by-category?view=msvc-170
call shadergen.bat || goto :error
cl /Ithirdparty /W3 /WX main.c || goto :error
goto :EOF
:error
echo Failed to build
exit /B %ERRORLEVEL%

98
main.c
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#define SOKOL_IMPL
#if defined(WIN32) || defined(_WIN32)
#define SOKOL_D3D11
#endif
#include "sokol_app.h"
#include "sokol_gfx.h"
#include "sokol_glue.h"
#include "quad-sapp.glsl.h"
static struct {
sg_pass_action pass_action;
sg_pipeline pip;
sg_bindings bind;
} state;
void init(void) {
sg_setup(&(sg_desc){
.context = sapp_sgcontext()
});
/* a vertex buffer */
float vertices[] = {
// positions colors
-0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 1.0f,
0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 1.0f,
-0.5f, -0.5f, 0.5f, 1.0f, 1.0f, 0.0f, 1.0f,
};
state.bind.vertex_buffers[0] = sg_make_buffer(&(sg_buffer_desc){
.data = SG_RANGE(vertices),
.label = "quad-vertices"
});
/* an index buffer with 2 triangles */
uint16_t indices[] = { 0, 1, 2, 0, 2, 3 };
state.bind.index_buffer = sg_make_buffer(&(sg_buffer_desc){
.type = SG_BUFFERTYPE_INDEXBUFFER,
.data = SG_RANGE(indices),
.label = "quad-indices"
});
/* a shader (use separate shader sources here */
sg_shader shd = sg_make_shader(quad_shader_desc(sg_query_backend()));
/* a pipeline state object */
state.pip = sg_make_pipeline(&(sg_pipeline_desc){
.shader = shd,
.index_type = SG_INDEXTYPE_UINT16,
.layout = {
.attrs = {
[ATTR_vs_position].format = SG_VERTEXFORMAT_FLOAT3,
[ATTR_vs_color0].format = SG_VERTEXFORMAT_FLOAT4
}
},
.label = "quad-pipeline"
});
/* default pass action */
state.pass_action = (sg_pass_action) {
.colors[0] = { .action=SG_ACTION_CLEAR, .value={0.0f, 0.0f, 0.0f, 1.0f } }
};
}
void frame(void) {
sg_begin_default_pass(&state.pass_action, sapp_width(), sapp_height());
sg_apply_pipeline(state.pip);
sg_apply_bindings(&state.bind);
sg_draw(0, 6, 1);
sg_end_pass();
sg_commit();
}
void cleanup(void) {
sg_shutdown();
}
void event(const sapp_event *e) {
if(e->type == SAPP_EVENTTYPE_KEY_DOWN) {
if(e->key_code == SAPP_KEYCODE_ESCAPE) {
sapp_quit();
}
}
}
sapp_desc sokol_main(int argc, char* argv[]) {
(void)argc; (void)argv;
return (sapp_desc){
.init_cb = init,
.frame_cb = frame,
.cleanup_cb = cleanup,
.event_cb = event,
.width = 800,
.height = 600,
.gl_force_gles2 = true,
.window_title = "Quad (sokol-app)",
.icon.sokol_default = true,
};
}

414
quad-sapp.glsl.h
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#pragma once
/*
#version:1# (machine generated, don't edit!)
Generated by sokol-shdc (https://github.com/floooh/sokol-tools)
Cmdline: sokol-shdc --input quad.glsl --output quad-sapp.glsl.h --slang glsl330:hlsl5:metal_macos
Overview:
Shader program 'quad':
Get shader desc: quad_shader_desc(sg_query_backend());
Vertex shader: vs
Attribute slots:
ATTR_vs_position = 0
ATTR_vs_color0 = 1
Fragment shader: fs
Shader descriptor structs:
sg_shader quad = sg_make_shader(quad_shader_desc(sg_query_backend()));
Vertex attribute locations for vertex shader 'vs':
sg_pipeline pip = sg_make_pipeline(&(sg_pipeline_desc){
.layout = {
.attrs = {
[ATTR_vs_position] = { ... },
[ATTR_vs_color0] = { ... },
},
},
...});
Image bind slots, use as index in sg_bindings.vs_images[] or .fs_images[]
*/
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <stddef.h>
#if !defined(SOKOL_SHDC_ALIGN)
#if defined(_MSC_VER)
#define SOKOL_SHDC_ALIGN(a) __declspec(align(a))
#else
#define SOKOL_SHDC_ALIGN(a) __attribute__((aligned(a)))
#endif
#endif
#define ATTR_vs_position (0)
#define ATTR_vs_color0 (1)
/*
#version 330
layout(location = 0) in vec4 position;
out vec4 color;
layout(location = 1) in vec4 color0;
void main()
{
gl_Position = position;
color = color0;
}
*/
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/*
#version 330
layout(location = 0) out vec4 frag_color;
in vec4 color;
void main()
{
frag_color = color;
}
*/
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/*
static float4 gl_Position;
static float4 position;
static float4 color;
static float4 color0;
struct SPIRV_Cross_Input
{
float4 position : TEXCOORD0;
float4 color0 : TEXCOORD1;
};
struct SPIRV_Cross_Output
{
float4 color : TEXCOORD0;
float4 gl_Position : SV_Position;
};
#line 11 "quad.glsl"
void vert_main()
{
#line 11 "quad.glsl"
gl_Position = position;
#line 12 "quad.glsl"
color = color0;
}
SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
{
position = stage_input.position;
color0 = stage_input.color0;
vert_main();
SPIRV_Cross_Output stage_output;
stage_output.gl_Position = gl_Position;
stage_output.color = color;
return stage_output;
}
*/
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/*
static float4 frag_color;
static float4 color;
struct SPIRV_Cross_Input
{
float4 color : TEXCOORD0;
};
struct SPIRV_Cross_Output
{
float4 frag_color : SV_Target0;
};
#line 10 "quad.glsl"
void frag_main()
{
#line 10 "quad.glsl"
frag_color = color;
}
SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
{
color = stage_input.color;
frag_main();
SPIRV_Cross_Output stage_output;
stage_output.frag_color = frag_color;
return stage_output;
}
*/
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};
/*
#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct main0_out
{
float4 color [[user(locn0)]];
float4 gl_Position [[position]];
};
struct main0_in
{
float4 position [[attribute(0)]];
float4 color0 [[attribute(1)]];
};
#line 11 "quad.glsl"
vertex main0_out main0(main0_in in [[stage_in]])
{
main0_out out = {};
#line 11 "quad.glsl"
out.gl_Position = in.position;
#line 12 "quad.glsl"
out.color = in.color0;
return out;
}
*/
static const char vs_source_metal_macos[482] = {
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0x0a,0x00,
};
/*
#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct main0_out
{
float4 frag_color [[color(0)]];
};
struct main0_in
{
float4 color [[user(locn0)]];
};
#line 10 "quad.glsl"
fragment main0_out main0(main0_in in [[stage_in]])
{
main0_out out = {};
#line 10 "quad.glsl"
out.frag_color = in.color;
return out;
}
*/
static const char fs_source_metal_macos[357] = {
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};
#if !defined(SOKOL_GFX_INCLUDED)
#error "Please include sokol_gfx.h before quad-sapp.glsl.h"
#endif
static inline const sg_shader_desc* quad_shader_desc(sg_backend backend) {
if (backend == SG_BACKEND_GLCORE33) {
static sg_shader_desc desc;
static bool valid;
if (!valid) {
valid = true;
desc.attrs[0].name = "position";
desc.attrs[1].name = "color0";
desc.vs.source = vs_source_glsl330;
desc.vs.entry = "main";
desc.fs.source = fs_source_glsl330;
desc.fs.entry = "main";
desc.label = "quad_shader";
}
return &desc;
}
if (backend == SG_BACKEND_D3D11) {
static sg_shader_desc desc;
static bool valid;
if (!valid) {
valid = true;
desc.attrs[0].sem_name = "TEXCOORD";
desc.attrs[0].sem_index = 0;
desc.attrs[1].sem_name = "TEXCOORD";
desc.attrs[1].sem_index = 1;
desc.vs.source = vs_source_hlsl5;
desc.vs.d3d11_target = "vs_5_0";
desc.vs.entry = "main";
desc.fs.source = fs_source_hlsl5;
desc.fs.d3d11_target = "ps_5_0";
desc.fs.entry = "main";
desc.label = "quad_shader";
}
return &desc;
}
if (backend == SG_BACKEND_METAL_MACOS) {
static sg_shader_desc desc;
static bool valid;
if (!valid) {
valid = true;
desc.vs.source = vs_source_metal_macos;
desc.vs.entry = "main0";
desc.fs.source = fs_source_metal_macos;
desc.fs.entry = "main0";
desc.label = "quad_shader";
}
return &desc;
}
return 0;
}

24
quad.glsl
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/* quad vertex shader */
@vs vs
in vec4 position;
in vec4 color0;
out vec4 color;
void main() {
gl_Position = position;
color = color0;
}
@end
/* quad fragment shader */
@fs fs
in vec4 color;
out vec4 frag_color;
void main() {
frag_color = color;
}
@end
/* quad shader program */
@program quad vs fs

7
shadergen.bat
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@echo off
thirdparty\sokol-shdc.exe --input quad.glsl --output quad-sapp.glsl.h --slang glsl330:hlsl5:metal_macos || goto :error
goto :EOF
:error
exit /B %ERRORLEVEL%

12411
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2617
thirdparty/sokol_audio.h vendored
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thirdparty/sokol_gfx.h vendored
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137
thirdparty/sokol_glue.h vendored
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#if defined(SOKOL_IMPL) && !defined(SOKOL_GLUE_IMPL)
#define SOKOL_GLUE_IMPL
#endif
#ifndef SOKOL_GLUE_INCLUDED
/*
sokol_glue.h -- glue helper functions for sokol headers
Project URL: https://github.com/floooh/sokol
Do this:
#define SOKOL_IMPL or
#define SOKOL_GLUE_IMPL
before you include this file in *one* C or C++ file to create the
implementation.
...optionally provide the following macros to override defaults:
SOKOL_ASSERT(c) - your own assert macro (default: assert(c))
SOKOL_GLUE_API_DECL - public function declaration prefix (default: extern)
SOKOL_API_DECL - same as SOKOL_GLUE_API_DECL
SOKOL_API_IMPL - public function implementation prefix (default: -)
If sokol_glue.h is compiled as a DLL, define the following before
including the declaration or implementation:
SOKOL_DLL
On Windows, SOKOL_DLL will define SOKOL_GLUE_API_DECL as __declspec(dllexport)
or __declspec(dllimport) as needed.
OVERVIEW
========
The sokol core headers should not depend on each other, but sometimes
it's useful to have a set of helper functions as "glue" between
two or more sokol headers.
This is what sokol_glue.h is for. Simply include the header after other
sokol headers (both for the implementation and declaration), and
depending on what headers have been included before, sokol_glue.h
will make available "glue functions".
PROVIDED FUNCTIONS
==================
- if sokol_app.h and sokol_gfx.h is included:
sg_context_desc sapp_sgcontext(void):
Returns an initialized sg_context_desc function initialized
by calling sokol_app.h functions.
LICENSE
=======
zlib/libpng license
Copyright (c) 2018 Andre Weissflog
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.
*/
#define SOKOL_GLUE_INCLUDED
#if defined(SOKOL_API_DECL) && !defined(SOKOL_GLUE_API_DECL)
#define SOKOL_GLUE_API_DECL SOKOL_API_DECL
#endif
#ifndef SOKOL_GLUE_API_DECL
#if defined(_WIN32) && defined(SOKOL_DLL) && defined(SOKOL_GLUE_IMPL)
#define SOKOL_GLUE_API_DECL __declspec(dllexport)
#elif defined(_WIN32) && defined(SOKOL_DLL)
#define SOKOL_GLUE_API_DECL __declspec(dllimport)
#else
#define SOKOL_GLUE_API_DECL extern
#endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if defined(SOKOL_GFX_INCLUDED) && defined(SOKOL_APP_INCLUDED)
SOKOL_GLUE_API_DECL sg_context_desc sapp_sgcontext(void);
#endif
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* SOKOL_GLUE_INCLUDED */
/*-- IMPLEMENTATION ----------------------------------------------------------*/
#ifdef SOKOL_GLUE_IMPL
#define SOKOL_GLUE_IMPL_INCLUDED (1)
#include <string.h> /* memset */
#ifndef SOKOL_API_IMPL
#define SOKOL_API_IMPL
#endif
#if defined(SOKOL_GFX_INCLUDED) && defined(SOKOL_APP_INCLUDED)
SOKOL_API_IMPL sg_context_desc sapp_sgcontext(void) {
sg_context_desc desc;
memset(&desc, 0, sizeof(desc));
desc.color_format = (sg_pixel_format) sapp_color_format();
desc.depth_format = (sg_pixel_format) sapp_depth_format();
desc.sample_count = sapp_sample_count();
desc.gl.force_gles2 = sapp_gles2();
desc.metal.device = sapp_metal_get_device();
desc.metal.renderpass_descriptor_cb = sapp_metal_get_renderpass_descriptor;
desc.metal.drawable_cb = sapp_metal_get_drawable;
desc.d3d11.device = sapp_d3d11_get_device();
desc.d3d11.device_context = sapp_d3d11_get_device_context();
desc.d3d11.render_target_view_cb = sapp_d3d11_get_render_target_view;
desc.d3d11.depth_stencil_view_cb = sapp_d3d11_get_depth_stencil_view;
desc.wgpu.device = sapp_wgpu_get_device();
desc.wgpu.render_view_cb = sapp_wgpu_get_render_view;
desc.wgpu.resolve_view_cb = sapp_wgpu_get_resolve_view;
desc.wgpu.depth_stencil_view_cb = sapp_wgpu_get_depth_stencil_view;
return desc;
}
#endif
#endif /* SOKOL_GLUE_IMPL */

319
thirdparty/sokol_time.h vendored
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#if defined(SOKOL_IMPL) && !defined(SOKOL_TIME_IMPL)
#define SOKOL_TIME_IMPL
#endif
#ifndef SOKOL_TIME_INCLUDED
/*
sokol_time.h -- simple cross-platform time measurement
Project URL: https://github.com/floooh/sokol
Do this:
#define SOKOL_IMPL or
#define SOKOL_TIME_IMPL
before you include this file in *one* C or C++ file to create the
implementation.
Optionally provide the following defines with your own implementations:
SOKOL_ASSERT(c) - your own assert macro (default: assert(c))
SOKOL_TIME_API_DECL - public function declaration prefix (default: extern)
SOKOL_API_DECL - same as SOKOL_TIME_API_DECL
SOKOL_API_IMPL - public function implementation prefix (default: -)
If sokol_time.h is compiled as a DLL, define the following before
including the declaration or implementation:
SOKOL_DLL
On Windows, SOKOL_DLL will define SOKOL_TIME_API_DECL as __declspec(dllexport)
or __declspec(dllimport) as needed.
void stm_setup();
Call once before any other functions to initialize sokol_time
(this calls for instance QueryPerformanceFrequency on Windows)
uint64_t stm_now();
Get current point in time in unspecified 'ticks'. The value that
is returned has no relation to the 'wall-clock' time and is
not in a specific time unit, it is only useful to compute
time differences.
uint64_t stm_diff(uint64_t new, uint64_t old);
Computes the time difference between new and old. This will always
return a positive, non-zero value.
uint64_t stm_since(uint64_t start);
Takes the current time, and returns the elapsed time since start
(this is a shortcut for "stm_diff(stm_now(), start)")
uint64_t stm_laptime(uint64_t* last_time);
This is useful for measuring frame time and other recurring
events. It takes the current time, returns the time difference
to the value in last_time, and stores the current time in
last_time for the next call. If the value in last_time is 0,
the return value will be zero (this usually happens on the
very first call).
uint64_t stm_round_to_common_refresh_rate(uint64_t duration)
This oddly named function takes a measured frame time and
returns the closest "nearby" common display refresh rate frame duration
in ticks. If the input duration isn't close to any common display
refresh rate, the input duration will be returned unchanged as a fallback.
The main purpose of this function is to remove jitter/inaccuracies from
measured frame times, and instead use the display refresh rate as
frame duration.
NOTE: for more robust frame timing, consider using the
sokol_app.h function sapp_frame_duration()
Use the following functions to convert a duration in ticks into
useful time units:
double stm_sec(uint64_t ticks);
double stm_ms(uint64_t ticks);
double stm_us(uint64_t ticks);
double stm_ns(uint64_t ticks);
Converts a tick value into seconds, milliseconds, microseconds
or nanoseconds. Note that not all platforms will have nanosecond
or even microsecond precision.
Uses the following time measurement functions under the hood:
Windows: QueryPerformanceFrequency() / QueryPerformanceCounter()
MacOS/iOS: mach_absolute_time()
emscripten: emscripten_get_now()
Linux+others: clock_gettime(CLOCK_MONOTONIC)
zlib/libpng license
Copyright (c) 2018 Andre Weissflog
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.
*/
#define SOKOL_TIME_INCLUDED (1)
#include <stdint.h>
#if defined(SOKOL_API_DECL) && !defined(SOKOL_TIME_API_DECL)
#define SOKOL_TIME_API_DECL SOKOL_API_DECL
#endif
#ifndef SOKOL_TIME_API_DECL
#if defined(_WIN32) && defined(SOKOL_DLL) && defined(SOKOL_TIME_IMPL)
#define SOKOL_TIME_API_DECL __declspec(dllexport)
#elif defined(_WIN32) && defined(SOKOL_DLL)
#define SOKOL_TIME_API_DECL __declspec(dllimport)
#else
#define SOKOL_TIME_API_DECL extern
#endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
SOKOL_TIME_API_DECL void stm_setup(void);
SOKOL_TIME_API_DECL uint64_t stm_now(void);
SOKOL_TIME_API_DECL uint64_t stm_diff(uint64_t new_ticks, uint64_t old_ticks);
SOKOL_TIME_API_DECL uint64_t stm_since(uint64_t start_ticks);
SOKOL_TIME_API_DECL uint64_t stm_laptime(uint64_t* last_time);
SOKOL_TIME_API_DECL uint64_t stm_round_to_common_refresh_rate(uint64_t frame_ticks);
SOKOL_TIME_API_DECL double stm_sec(uint64_t ticks);
SOKOL_TIME_API_DECL double stm_ms(uint64_t ticks);
SOKOL_TIME_API_DECL double stm_us(uint64_t ticks);
SOKOL_TIME_API_DECL double stm_ns(uint64_t ticks);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif // SOKOL_TIME_INCLUDED
/*-- IMPLEMENTATION ----------------------------------------------------------*/
#ifdef SOKOL_TIME_IMPL
#define SOKOL_TIME_IMPL_INCLUDED (1)
#include <string.h> /* memset */
#ifndef SOKOL_API_IMPL
#define SOKOL_API_IMPL
#endif
#ifndef SOKOL_ASSERT
#include <assert.h>
#define SOKOL_ASSERT(c) assert(c)
#endif
#ifndef _SOKOL_PRIVATE
#if defined(__GNUC__) || defined(__clang__)
#define _SOKOL_PRIVATE __attribute__((unused)) static
#else
#define _SOKOL_PRIVATE static
#endif
#endif
#if defined(_WIN32)
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
typedef struct {
uint32_t initialized;
LARGE_INTEGER freq;
LARGE_INTEGER start;
} _stm_state_t;
#elif defined(__APPLE__) && defined(__MACH__)
#include <mach/mach_time.h>
typedef struct {
uint32_t initialized;
mach_timebase_info_data_t timebase;
uint64_t start;
} _stm_state_t;
#elif defined(__EMSCRIPTEN__)
#include <emscripten/emscripten.h>
typedef struct {
uint32_t initialized;
double start;
} _stm_state_t;
#else /* anything else, this will need more care for non-Linux platforms */
#ifdef ESP8266
// On the ESP8266, clock_gettime ignores the first argument and CLOCK_MONOTONIC isn't defined
#define CLOCK_MONOTONIC 0
#endif
#include <time.h>
typedef struct {
uint32_t initialized;
uint64_t start;
} _stm_state_t;
#endif
static _stm_state_t _stm;
/* prevent 64-bit overflow when computing relative timestamp
see https://gist.github.com/jspohr/3dc4f00033d79ec5bdaf67bc46c813e3
*/
#if defined(_WIN32) || (defined(__APPLE__) && defined(__MACH__))
_SOKOL_PRIVATE int64_t _stm_int64_muldiv(int64_t value, int64_t numer, int64_t denom) {
int64_t q = value / denom;
int64_t r = value % denom;
return q * numer + r * numer / denom;
}
#endif
SOKOL_API_IMPL void stm_setup(void) {
memset(&_stm, 0, sizeof(_stm));
_stm.initialized = 0xABCDABCD;
#if defined(_WIN32)
QueryPerformanceFrequency(&_stm.freq);
QueryPerformanceCounter(&_stm.start);
#elif defined(__APPLE__) && defined(__MACH__)
mach_timebase_info(&_stm.timebase);
_stm.start = mach_absolute_time();
#elif defined(__EMSCRIPTEN__)
_stm.start = emscripten_get_now();
#else
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
_stm.start = (uint64_t)ts.tv_sec*1000000000 + (uint64_t)ts.tv_nsec;
#endif
}
SOKOL_API_IMPL uint64_t stm_now(void) {
SOKOL_ASSERT(_stm.initialized == 0xABCDABCD);
uint64_t now;
#if defined(_WIN32)
LARGE_INTEGER qpc_t;
QueryPerformanceCounter(&qpc_t);
now = (uint64_t) _stm_int64_muldiv(qpc_t.QuadPart - _stm.start.QuadPart, 1000000000, _stm.freq.QuadPart);
#elif defined(__APPLE__) && defined(__MACH__)
const uint64_t mach_now = mach_absolute_time() - _stm.start;
now = (uint64_t) _stm_int64_muldiv((int64_t)mach_now, (int64_t)_stm.timebase.numer, (int64_t)_stm.timebase.denom);
#elif defined(__EMSCRIPTEN__)
double js_now = emscripten_get_now() - _stm.start;
now = (uint64_t) (js_now * 1000000.0);
#else
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
now = ((uint64_t)ts.tv_sec*1000000000 + (uint64_t)ts.tv_nsec) - _stm.start;
#endif
return now;
}
SOKOL_API_IMPL uint64_t stm_diff(uint64_t new_ticks, uint64_t old_ticks) {
if (new_ticks > old_ticks) {
return new_ticks - old_ticks;
}
else {
return 1;
}
}
SOKOL_API_IMPL uint64_t stm_since(uint64_t start_ticks) {
return stm_diff(stm_now(), start_ticks);
}
SOKOL_API_IMPL uint64_t stm_laptime(uint64_t* last_time) {
SOKOL_ASSERT(last_time);
uint64_t dt = 0;
uint64_t now = stm_now();
if (0 != *last_time) {
dt = stm_diff(now, *last_time);
}
*last_time = now;
return dt;
}
// first number is frame duration in ns, second number is tolerance in ns,
// the resulting min/max values must not overlap!
static const uint64_t _stm_refresh_rates[][2] = {
{ 16666667, 1000000 }, // 60 Hz: 16.6667 +- 1ms
{ 13888889, 250000 }, // 72 Hz: 13.8889 +- 0.25ms
{ 13333333, 250000 }, // 75 Hz: 13.3333 +- 0.25ms
{ 11764706, 250000 }, // 85 Hz: 11.7647 +- 0.25
{ 11111111, 250000 }, // 90 Hz: 11.1111 +- 0.25ms
{ 10000000, 500000 }, // 100 Hz: 10.0000 +- 0.5ms
{ 8333333, 500000 }, // 120 Hz: 8.3333 +- 0.5ms
{ 6944445, 500000 }, // 144 Hz: 6.9445 +- 0.5ms
{ 4166667, 1000000 }, // 240 Hz: 4.1666 +- 1ms
{ 0, 0 }, // keep the last element always at zero
};
SOKOL_API_IMPL uint64_t stm_round_to_common_refresh_rate(uint64_t ticks) {
uint64_t ns;
int i = 0;
while (0 != (ns = _stm_refresh_rates[i][0])) {
uint64_t tol = _stm_refresh_rates[i][1];
if ((ticks > (ns - tol)) && (ticks < (ns + tol))) {
return ns;
}
i++;
}
// fallthough: didn't fit into any buckets
return ticks;
}
SOKOL_API_IMPL double stm_sec(uint64_t ticks) {
return (double)ticks / 1000000000.0;
}
SOKOL_API_IMPL double stm_ms(uint64_t ticks) {
return (double)ticks / 1000000.0;
}
SOKOL_API_IMPL double stm_us(uint64_t ticks) {
return (double)ticks / 1000.0;
}
SOKOL_API_IMPL double stm_ns(uint64_t ticks) {
return (double)ticks;
}
#endif /* SOKOL_TIME_IMPL */

7987
thirdparty/stb_image.h vendored
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