367 lines
11 KiB
Plaintext
367 lines
11 KiB
Plaintext
/*
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* Copyright 2011-2017 Branimir Karadzic. All rights reserved.
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* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
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#include "bgfx_p.h"
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#if BX_PLATFORM_IOS && (BGFX_CONFIG_RENDERER_OPENGLES|BGFX_CONFIG_RENDERER_OPENGL)
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# include <UIKit/UIKit.h>
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# include <QuartzCore/CAEAGLLayer.h>
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# include "renderer_gl.h"
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namespace bgfx { namespace gl
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{
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# define GL_IMPORT(_optional, _proto, _func, _import) _proto _func = NULL
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# include "glimports.h"
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static void* s_opengles = NULL;
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struct SwapChainGL
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{
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SwapChainGL(EAGLContext *_context, CAEAGLLayer *_layer)
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: m_context(_context)
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, m_fbo(0)
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, m_colorRbo(0)
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, m_depthStencilRbo(0)
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{
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_layer.contentsScale = [UIScreen mainScreen].scale;
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_layer.opaque = [_layer.style valueForKey:@"opaque"] == nil
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? true
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: [[_layer.style valueForKey:@"opaque"] boolValue]
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;
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_layer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys
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: [NSNumber numberWithBool:false]
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, kEAGLDrawablePropertyRetainedBacking
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, kEAGLColorFormatRGBA8
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, kEAGLDrawablePropertyColorFormat
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, nil
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];
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[EAGLContext setCurrentContext:_context];
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GL_CHECK(glGenFramebuffers(1, &m_fbo) );
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GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, m_fbo) );
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GL_CHECK(glGenRenderbuffers(1, &m_colorRbo) );
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GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, m_colorRbo) );
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[_context renderbufferStorage:GL_RENDERBUFFER fromDrawable:_layer];
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GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, m_colorRbo) );
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GLint width;
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GLint height;
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GL_CHECK(glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &width) );
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GL_CHECK(glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &height) );
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BX_TRACE("Screen size: %d x %d", width, height);
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m_width = width;
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m_height = height;
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m_layer = _layer;
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createFrameBuffers(m_width, m_height);
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}
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~SwapChainGL()
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{
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destroyFrameBuffers();
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}
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void destroyFrameBuffers()
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{
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GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, 0) );
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GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, 0) );
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GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, 0) );
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if (0 != m_fbo)
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{
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GL_CHECK(glDeleteFramebuffers(1, &m_fbo) );
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m_fbo = 0;
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}
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if (0 != m_colorRbo)
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{
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GL_CHECK(glDeleteRenderbuffers(1, &m_colorRbo) );
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m_colorRbo = 0;
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}
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if (0 != m_depthStencilRbo)
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{
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GL_CHECK(glDeleteRenderbuffers(1, &m_depthStencilRbo) );
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m_depthStencilRbo = 0;
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}
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}
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void createFrameBuffers(GLint _width, GLint _height)
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{
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GL_CHECK(glGenRenderbuffers(1, &m_depthStencilRbo) );
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GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, m_depthStencilRbo) );
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GL_CHECK(glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, _width, _height) );
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GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, m_depthStencilRbo) );
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GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_depthStencilRbo) );
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GLenum err = glCheckFramebufferStatus(GL_FRAMEBUFFER);
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BX_CHECK(GL_FRAMEBUFFER_COMPLETE == err, "glCheckFramebufferStatus failed 0x%08x", err);
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BX_UNUSED(err);
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makeCurrent();
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GL_CHECK(glClearColor(0.0f, 0.0f, 0.0f, 0.0f) );
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GL_CHECK(glClear(GL_COLOR_BUFFER_BIT) );
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swapBuffers();
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GL_CHECK(glClear(GL_COLOR_BUFFER_BIT) );
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swapBuffers();
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}
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void makeCurrent()
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{
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[EAGLContext setCurrentContext:m_context];
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GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, m_fbo) );
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GLint newWidth = m_layer.bounds.size.width*[UIScreen mainScreen].scale;
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GLint newHeight = m_layer.bounds.size.height*[UIScreen mainScreen].scale;
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resize(newWidth, newHeight);
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}
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void resize(GLint _width, GLint _height)
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{
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if (m_width == _width
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&& m_height == _height)
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{
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return;
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}
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destroyFrameBuffers();
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m_width = _width;
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m_height = _height;
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createFrameBuffers(m_width, m_height);
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}
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void swapBuffers()
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{
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GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, m_colorRbo) );
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[m_context presentRenderbuffer:GL_RENDERBUFFER];
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}
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EAGLContext* m_context;
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CAEAGLLayer *m_layer;
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GLuint m_fbo;
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GLuint m_colorRbo;
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GLuint m_depthStencilRbo;
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GLint m_width;
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GLint m_height;
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};
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void GlContext::create(uint32_t _width, uint32_t _height)
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{
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s_opengles = bx::dlopen("/System/Library/Frameworks/OpenGLES.framework/OpenGLES");
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BX_CHECK(NULL != s_opengles, "OpenGLES dynamic library is not found!");
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BX_UNUSED(_width, _height);
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CAEAGLLayer* layer = (CAEAGLLayer*)g_platformData.nwh;
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layer.opaque = [layer.style valueForKey:@"opaque"] == nil ? true : [[layer.style valueForKey:@"opaque"] boolValue];
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layer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys
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: [NSNumber numberWithBool:false]
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, kEAGLDrawablePropertyRetainedBacking
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, kEAGLColorFormatRGBA8
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, kEAGLDrawablePropertyColorFormat
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, nil
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];
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EAGLContext* context = [ [EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
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BX_CHECK(NULL != context, "Failed to create kEAGLRenderingAPIOpenGLES2 context.");
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m_context = (void*)context;
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[EAGLContext setCurrentContext:context];
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GL_CHECK(glGenFramebuffers(1, &m_fbo) );
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GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, m_fbo) );
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GL_CHECK(glGenRenderbuffers(1, &m_colorRbo) );
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GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, m_colorRbo) );
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[context renderbufferStorage:GL_RENDERBUFFER fromDrawable:layer];
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GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, m_colorRbo) );
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GLint width;
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GLint height;
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GL_CHECK(glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &width) );
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GL_CHECK(glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &height) );
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BX_TRACE("Screen size: %d x %d", width, height);
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GL_CHECK(glGenRenderbuffers(1, &m_depthStencilRbo) );
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GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, m_depthStencilRbo) );
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GL_CHECK(glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height) );
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GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, m_depthStencilRbo) );
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GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_depthStencilRbo) );
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BX_CHECK(GL_FRAMEBUFFER_COMPLETE == glCheckFramebufferStatus(GL_FRAMEBUFFER)
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, "glCheckFramebufferStatus failed 0x%08x"
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, glCheckFramebufferStatus(GL_FRAMEBUFFER)
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);
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makeCurrent();
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GL_CHECK(glClearColor(0.0f, 0.0f, 0.0f, 0.0f) );
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GL_CHECK(glClear(GL_COLOR_BUFFER_BIT) );
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swap(NULL);
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GL_CHECK(glClear(GL_COLOR_BUFFER_BIT) );
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swap(NULL);
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import();
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g_internalData.context = m_context;
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}
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void GlContext::destroy()
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{
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if (0 != m_fbo)
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{
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GL_CHECK(glDeleteFramebuffers(1, &m_fbo) );
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m_fbo = 0;
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}
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if (0 != m_colorRbo)
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{
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GL_CHECK(glDeleteRenderbuffers(1, &m_colorRbo) );
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m_colorRbo = 0;
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}
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if (0 != m_depthStencilRbo)
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{
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GL_CHECK(glDeleteRenderbuffers(1, &m_depthStencilRbo) );
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m_depthStencilRbo = 0;
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}
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EAGLContext* context = (EAGLContext*)m_context;
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[context release];
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bx::dlclose(s_opengles);
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}
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void GlContext::resize(uint32_t _width, uint32_t _height, uint32_t _flags)
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{
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BX_UNUSED(_width, _height, _flags);
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BX_TRACE("resize context");
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if (0 != m_fbo)
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{
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GL_CHECK(glDeleteFramebuffers(1, &m_fbo) );
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m_fbo = 0;
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}
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if (0 != m_colorRbo)
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{
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GL_CHECK(glDeleteRenderbuffers(1, &m_colorRbo) );
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m_colorRbo = 0;
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}
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if (0 != m_depthStencilRbo)
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{
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GL_CHECK(glDeleteRenderbuffers(1, &m_depthStencilRbo) );
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m_depthStencilRbo = 0;
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}
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GL_CHECK(glGenFramebuffers(1, &m_fbo) );
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GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, m_fbo) );
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GL_CHECK(glGenRenderbuffers(1, &m_colorRbo) );
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GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, m_colorRbo) );
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[((EAGLContext*)m_context) renderbufferStorage:GL_RENDERBUFFER fromDrawable:(CAEAGLLayer*)g_platformData.nwh];
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GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, m_colorRbo) );
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GLint width;
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GLint height;
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GL_CHECK(glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &width) );
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GL_CHECK(glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &height) );
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BX_TRACE("Screen size: %d x %d", width, height);
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GL_CHECK(glGenRenderbuffers(1, &m_depthStencilRbo) );
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GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, m_depthStencilRbo) );
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GL_CHECK(glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height) );
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GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, m_depthStencilRbo) );
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GL_CHECK(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_depthStencilRbo) );
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BX_CHECK(GL_FRAMEBUFFER_COMPLETE == glCheckFramebufferStatus(GL_FRAMEBUFFER)
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, "glCheckFramebufferStatus failed 0x%08x"
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, glCheckFramebufferStatus(GL_FRAMEBUFFER)
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);
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}
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uint64_t GlContext::getCaps() const
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{
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return BGFX_CAPS_SWAP_CHAIN;
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}
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SwapChainGL* GlContext::createSwapChain(void* _nwh)
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{
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return BX_NEW(g_allocator, SwapChainGL)(/*m_display, m_config,*/ (EAGLContext*)m_context, (CAEAGLLayer*)_nwh);
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}
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void GlContext::destroySwapChain(SwapChainGL* _swapChain)
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{
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BX_DELETE(g_allocator, _swapChain);
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}
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void GlContext::swap(SwapChainGL* _swapChain)
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{
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makeCurrent(_swapChain);
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if (NULL == _swapChain)
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{
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GL_CHECK(glBindRenderbuffer(GL_RENDERBUFFER, m_colorRbo) );
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EAGLContext* context = (EAGLContext*)m_context;
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[context presentRenderbuffer:GL_RENDERBUFFER];
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}
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else
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{
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_swapChain->swapBuffers();
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}
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}
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void GlContext::makeCurrent(SwapChainGL* _swapChain)
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{
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if (m_current != _swapChain)
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{
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m_current = _swapChain;
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if (NULL == _swapChain)
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{
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[EAGLContext setCurrentContext:(EAGLContext*)m_context];
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GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, m_fbo) );
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}
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else
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{
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_swapChain->makeCurrent();
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}
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}
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}
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void GlContext::import()
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{
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BX_TRACE("Import:");
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# define GL_EXTENSION(_optional, _proto, _func, _import) \
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{ \
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if (_func == NULL) \
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{ \
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_func = (_proto)bx::dlsym(s_opengles, #_import); \
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BX_TRACE("%p " #_func " (" #_import ")", _func); \
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} \
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BGFX_FATAL(_optional || NULL != _func, Fatal::UnableToInitialize \
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, "Failed to create OpenGLES context. EAGLGetProcAddress(\"%s\")" \
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, #_import); \
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}
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# include "glimports.h"
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}
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} /* namespace gl */ } // namespace bgfx
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#endif // BX_PLATFORM_IOS && (BGFX_CONFIG_RENDERER_OPENGLES|BGFX_CONFIG_RENDERER_OPENGL)
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