[Renderers/Sokol] Sokol renderer & examples (#373)

examples/sokol-video-demo/CMakeLists.txt

@@ -0,0 +1,71 @@
+cmake_minimum_required(VERSION 3.27)
+project(sokol_video_demo C)
+
+include(FetchContent)
+set(FETCHCONTENT_QUIET FALSE)
+
+# Linux -pthread shenanigans
+if (CMAKE_SYSTEM_NAME STREQUAL Linux)
+    set(THREADS_PREFER_PTHREAD_FLAG ON)
+    find_package(Threads REQUIRED)
+endif()
+
+FetchContent_Declare(
+    fontstash
+    GIT_REPOSITORY "https://github.com/memononen/fontstash.git"
+    GIT_TAG "b5ddc9741061343740d85d636d782ed3e07cf7be"
+    GIT_PROGRESS TRUE
+    GIT_SHALLOW TRUE
+)
+FetchContent_MakeAvailable(fontstash)
+
+FetchContent_Declare(
+    sokol
+    GIT_REPOSITORY "https://github.com/floooh/sokol.git"
+    GIT_TAG "da9de496f938b7575eff7f01ab774d77469bd390"
+    GIT_PROGRESS TRUE
+    GIT_SHALLOW TRUE
+)
+FetchContent_MakeAvailable(sokol)
+set(sokol_HEADERS
+    ${sokol_SOURCE_DIR}/sokol_app.h
+    ${sokol_SOURCE_DIR}/sokol_gfx.h
+    ${sokol_SOURCE_DIR}/sokol_glue.h
+    ${sokol_SOURCE_DIR}/sokol_log.h
+    ${sokol_SOURCE_DIR}/util/sokol_gl.h
+    ${fontstash_SOURCE_DIR}/src/fontstash.h
+    ${sokol_SOURCE_DIR}/util/sokol_fontstash.h)
+if(CMAKE_SYSTEM_NAME STREQUAL Darwin)
+    add_library(sokol STATIC sokol.c ${sokol_HEADERS})
+    target_compile_options(sokol PRIVATE -x objective-c)
+    target_link_libraries(sokol PUBLIC
+        "-framework QuartzCore"
+        "-framework Cocoa"
+        "-framework MetalKit"
+        "-framework Metal")
+else()
+    add_library(sokol STATIC sokol.c ${sokol_HEADERS})
+    if (CMAKE_SYSTEM_NAME STREQUAL Linux)
+        target_compile_definitions(sokol PRIVATE SOKOL_GLCORE=1)
+        target_link_libraries(sokol INTERFACE X11 Xi Xcursor GL dl m)
+        target_link_libraries(sokol PUBLIC Threads::Threads)
+    endif()
+endif()
+target_include_directories(sokol INTERFACE ${sokol_SOURCE_DIR} ${fontstash_SOURCE_DIR}/src
+                                 PRIVATE ${sokol_SOURCE_DIR} ${fontstash_SOURCE_DIR}/src)
+
+
+
+if(CMAKE_SYSTEM_NAME STREQUAL Windows)
+    add_executable(sokol_video_demo WIN32 main.c)
+    set_property(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT sokol_video_demo)
+else()
+    add_executable(sokol_video_demo main.c)
+endif()
+target_link_libraries(sokol_video_demo PUBLIC sokol)
+
+add_custom_command(
+        TARGET sokol_video_demo POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E copy_directory
+        ${CMAKE_CURRENT_SOURCE_DIR}/resources
+        ${CMAKE_CURRENT_BINARY_DIR}/resources)

examples/sokol-video-demo/main.c

@@ -0,0 +1,77 @@
+#include "sokol_app.h"
+#include "sokol_gfx.h"
+#include "sokol_glue.h"
+#include "sokol_log.h"
+
+#define CLAY_IMPLEMENTATION
+#include "../../clay.h"
+
+#include "util/sokol_gl.h"
+#include "fontstash.h"
+#include "util/sokol_fontstash.h"
+#define SOKOL_CLAY_IMPL
+#include "../../renderers/sokol/sokol_clay.h"
+
+#include "../shared-layouts/clay-video-demo.c"
+
+static ClayVideoDemo_Data demoData;
+static sclay_font_t fonts[1];
+
+static void init() {
+    sg_setup(&(sg_desc){
+        .environment = sglue_environment(),
+        .logger.func = slog_func,
+    });
+    sgl_setup(&(sgl_desc_t){
+        .logger.func = slog_func,
+    });
+    sclay_setup();
+    uint64_t totalMemorySize = Clay_MinMemorySize();
+    Clay_Arena clayMemory = Clay_CreateArenaWithCapacityAndMemory(totalMemorySize, malloc(totalMemorySize));
+    Clay_Initialize(clayMemory, (Clay_Dimensions){ (float)sapp_width(), (float)sapp_height() }, (Clay_ErrorHandler){0});
+    fonts[FONT_ID_BODY_16] = sclay_add_font("resources/Roboto-Regular.ttf");
+    Clay_SetMeasureTextFunction(sclay_measure_text, &fonts);
+    demoData = ClayVideoDemo_Initialize();
+}
+
+static void frame() {
+    sclay_new_frame();
+    Clay_RenderCommandArray renderCommands = ClayVideoDemo_CreateLayout(&demoData);
+
+    sg_begin_pass(&(sg_pass){ .swapchain = sglue_swapchain() });
+    sgl_matrix_mode_modelview();
+    sgl_load_identity();
+    sclay_render(renderCommands, fonts);
+    sgl_draw();
+    sg_end_pass();
+    sg_commit();
+}
+
+static void event(const sapp_event *ev) {
+    if(ev->type == SAPP_EVENTTYPE_KEY_DOWN && ev->key_code == SAPP_KEYCODE_D){
+        Clay_SetDebugModeEnabled(true);
+    } else {
+        sclay_handle_event(ev);
+    }
+}
+
+static void cleanup() {
+    sclay_shutdown();
+    sgl_shutdown();
+    sg_shutdown();
+}
+
+sapp_desc sokol_main(int argc, char **argv) {
+    return (sapp_desc){
+        .init_cb = init,
+        .frame_cb = frame,
+        .event_cb = event,
+        .cleanup_cb = cleanup,
+        .window_title = "Clay - Sokol Renderer Example",
+        .width = 800,
+        .height = 600,
+        .high_dpi = true,
+        .icon.sokol_default = true,
+        .logger.func = slog_func,
+    };
+}

examples/sokol-video-demo/sokol.c

@@ -0,0 +1,24 @@
+#define SOKOL_IMPL
+#if defined(_WIN32)
+#define SOKOL_D3D11
+#elif defined(__EMSCRIPTEN__)
+#define SOKOL_GLES2
+#elif defined(__APPLE__)
+#define SOKOL_METAL
+#else
+#define SOKOL_GLCORE33
+#endif
+#include "sokol_app.h"
+#include "sokol_gfx.h"
+#include "sokol_time.h"
+#include "sokol_fetch.h"
+#include "sokol_glue.h"
+#include "sokol_log.h"
+
+#include "util/sokol_gl.h"
+#include <stdio.h> // fontstash requires this
+#include <stdlib.h> // fontstash requires this
+#define FONTSTASH_IMPLEMENTATION
+#include "fontstash.h"
+#define SOKOL_FONTSTASH_IMPL
+#include "util/sokol_fontstash.h"