GRAPHICS: Move common OpenGL files into graphics/opengl
This commit is contained in:
Dries Harnie
parent
bc80a12978
commit
36c8b3d2d5
16 changed files with 21 additions and 21 deletions
184
graphics/opengl/framebuffer.cpp
Normal file
184
graphics/opengl/framebuffer.cpp
Normal file
|
|
@ -0,0 +1,184 @@
|
|||
/* ResidualVM - A 3D game interpreter
|
||||
*
|
||||
* ResidualVM is the legal property of its developers, whose names
|
||||
* are too numerous to list here. Please refer to the COPYRIGHT
|
||||
* file distributed with this source distribution.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License
|
||||
* as published by the Free Software Foundation; either version 2
|
||||
* of the License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
||||
*
|
||||
*/
|
||||
|
||||
#include "common/textconsole.h"
|
||||
|
||||
#if defined(USE_OPENGL) && !defined(AMIGAOS)
|
||||
|
||||
#ifdef USE_OPENGL_SHADERS
|
||||
#include "graphics/opengl/framebuffer.h"
|
||||
#elif defined(SDL_BACKEND)
|
||||
#define GL_GLEXT_PROTOTYPES // For the GL_EXT_framebuffer_object extension
|
||||
#include "graphics/opengl/framebuffer.h"
|
||||
#ifndef GL_ARB_framebuffer_object
|
||||
#define GL_COLOR_ATTACHMENT0 GL_COLOR_ATTACHMENT0_EXT
|
||||
#define GL_DEPTH_ATTACHMENT GL_DEPTH_ATTACHMENT_EXT
|
||||
#define GL_FRAMEBUFFER GL_FRAMEBUFFER_EXT
|
||||
#define GL_FRAMEBUFFER_COMPLETE GL_FRAMEBUFFER_COMPLETE_EXT
|
||||
#define GL_RENDERBUFFER GL_RENDERBUFFER_EXT
|
||||
#define GL_STENCIL_ATTACHMENT GL_STENCIL_ATTACHMENT_EXT
|
||||
#define GL_STENCIL_INDEX8 GL_STENCIL_INDEX8_EXT
|
||||
#define GL_DEPTH24_STENCIL8 0x88F0
|
||||
#endif
|
||||
#include "backends/platform/sdl/sdl-sys.h"
|
||||
#endif // defined(SDL_BACKEND)
|
||||
|
||||
#include "graphics/opengl/extensions.h"
|
||||
|
||||
#ifdef USE_GLES2
|
||||
#define GL_DEPTH24_STENCIL8 GL_DEPTH24_STENCIL8_OES
|
||||
#endif
|
||||
|
||||
namespace Graphics {
|
||||
|
||||
#if defined(SDL_BACKEND) && !defined(USE_GLEW)
|
||||
static bool framebuffer_object_functions = false;
|
||||
static PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebuffer;
|
||||
static PFNGLBINDRENDERBUFFEREXTPROC glBindRenderbuffer;
|
||||
static PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatus;
|
||||
static PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffers;
|
||||
static PFNGLDELETERENDERBUFFERSEXTPROC glDeleteRenderbuffers;
|
||||
static PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC glFramebufferRenderbuffer;
|
||||
static PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2D;
|
||||
static PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffers;
|
||||
static PFNGLGENRENDERBUFFERSEXTPROC glGenRenderbuffers;
|
||||
static PFNGLRENDERBUFFERSTORAGEEXTPROC glRenderbufferStorage;
|
||||
|
||||
static void grabFramebufferObjectPointers() {
|
||||
if (framebuffer_object_functions)
|
||||
return;
|
||||
framebuffer_object_functions = true;
|
||||
|
||||
union {
|
||||
void *obj_ptr;
|
||||
void (APIENTRY *func_ptr)();
|
||||
} u;
|
||||
// We're casting from an object pointer to a function pointer, the
|
||||
// sizes need to be the same for this to work.
|
||||
assert(sizeof(u.obj_ptr) == sizeof(u.func_ptr));
|
||||
u.obj_ptr = SDL_GL_GetProcAddress("glBindFramebuffer");
|
||||
glBindFramebuffer = (PFNGLBINDFRAMEBUFFEREXTPROC)u.func_ptr;
|
||||
u.obj_ptr = SDL_GL_GetProcAddress("glBindRenderbuffer");
|
||||
glBindRenderbuffer = (PFNGLBINDRENDERBUFFEREXTPROC)u.func_ptr;
|
||||
u.obj_ptr = SDL_GL_GetProcAddress("glCheckFramebufferStatus");
|
||||
glCheckFramebufferStatus = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC)u.func_ptr;
|
||||
u.obj_ptr = SDL_GL_GetProcAddress("glDeleteFramebuffers");
|
||||
glDeleteFramebuffers = (PFNGLDELETEFRAMEBUFFERSEXTPROC)u.func_ptr;
|
||||
u.obj_ptr = SDL_GL_GetProcAddress("glDeleteRenderbuffers");
|
||||
glDeleteRenderbuffers = (PFNGLDELETERENDERBUFFERSEXTPROC)u.func_ptr;
|
||||
u.obj_ptr = SDL_GL_GetProcAddress("glFramebufferRenderbuffer");
|
||||
glFramebufferRenderbuffer = (PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC)u.func_ptr;
|
||||
u.obj_ptr = SDL_GL_GetProcAddress("glFramebufferTexture2D");
|
||||
glFramebufferTexture2D = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC)u.func_ptr;
|
||||
u.obj_ptr = SDL_GL_GetProcAddress("glGenFramebuffers");
|
||||
glGenFramebuffers = (PFNGLGENFRAMEBUFFERSEXTPROC)u.func_ptr;
|
||||
u.obj_ptr = SDL_GL_GetProcAddress("glGenRenderbuffers");
|
||||
glGenRenderbuffers = (PFNGLGENRENDERBUFFERSEXTPROC)u.func_ptr;
|
||||
u.obj_ptr = SDL_GL_GetProcAddress("glRenderbufferStorage");
|
||||
glRenderbufferStorage = (PFNGLRENDERBUFFERSTORAGEEXTPROC)u.func_ptr;
|
||||
}
|
||||
#endif // defined(SDL_BACKEND) && !defined(USE_OPENGL_SHADERS)
|
||||
|
||||
|
||||
|
||||
static bool usePackedBuffer() {
|
||||
#ifdef USE_GLES2
|
||||
return Graphics::isExtensionSupported("GL_OES_packed_depth_stencil");
|
||||
#endif
|
||||
#ifndef USE_OPENGL_SHADERS
|
||||
return Graphics::isExtensionSupported("GL_EXT_packed_depth_stencil");
|
||||
#endif
|
||||
return true;
|
||||
}
|
||||
|
||||
FrameBuffer::FrameBuffer(uint width, uint height) :
|
||||
Texture(width, height) {
|
||||
#ifdef SDL_BACKEND
|
||||
if (!Graphics::isExtensionSupported("GL_EXT_framebuffer_object")) {
|
||||
error("GL_EXT_framebuffer_object extension is not supported!");
|
||||
}
|
||||
#endif
|
||||
#if defined(SDL_BACKEND) && !defined(USE_GLEW)
|
||||
grabFramebufferObjectPointers();
|
||||
#endif
|
||||
|
||||
init();
|
||||
}
|
||||
|
||||
FrameBuffer::FrameBuffer(GLuint texture_name, uint width, uint height, uint texture_width, uint texture_height) :
|
||||
Texture(texture_name, width, height, texture_width, texture_height) {
|
||||
init();
|
||||
}
|
||||
|
||||
FrameBuffer::~FrameBuffer() {
|
||||
glDeleteRenderbuffers(2, _renderBuffers);
|
||||
glDeleteFramebuffers(1, &_frameBuffer);
|
||||
}
|
||||
|
||||
void FrameBuffer::init() {
|
||||
glGenFramebuffers(1, &_frameBuffer);
|
||||
glGenRenderbuffers(2, _renderBuffers);
|
||||
|
||||
glBindFramebuffer(GL_FRAMEBUFFER, _frameBuffer);
|
||||
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, _texture, 0);
|
||||
|
||||
if (usePackedBuffer()) {
|
||||
glBindRenderbuffer(GL_RENDERBUFFER, _renderBuffers[0]);
|
||||
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, _texWidth, _texHeight);
|
||||
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, _renderBuffers[0]);
|
||||
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, _renderBuffers[0]);
|
||||
glBindRenderbuffer(GL_RENDERBUFFER, 0);
|
||||
} else {
|
||||
glBindRenderbuffer(GL_RENDERBUFFER, _renderBuffers[0]);
|
||||
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, _texWidth, _texHeight);
|
||||
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, _renderBuffers[0]);
|
||||
|
||||
glBindRenderbuffer(GL_RENDERBUFFER, _renderBuffers[1]);
|
||||
glRenderbufferStorage(GL_RENDERBUFFER, GL_STENCIL_INDEX8, _texWidth, _texHeight);
|
||||
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, _renderBuffers[1]);
|
||||
glBindRenderbuffer(GL_RENDERBUFFER, 0);
|
||||
}
|
||||
|
||||
glBindFramebuffer(GL_FRAMEBUFFER, _frameBuffer);
|
||||
GLenum status=glCheckFramebufferStatus(GL_FRAMEBUFFER);
|
||||
if (status != GL_FRAMEBUFFER_COMPLETE)
|
||||
error("Framebuffer is not complete! status: %d", status);
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
glBindFramebuffer(GL_FRAMEBUFFER, 0);
|
||||
}
|
||||
|
||||
void FrameBuffer::attach() {
|
||||
glBindFramebuffer(GL_FRAMEBUFFER, _frameBuffer);
|
||||
glViewport(0,0, _width, _height);
|
||||
|
||||
glClearColor(0, 0, 0, 1.0f);
|
||||
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
||||
}
|
||||
|
||||
void FrameBuffer::detach() {
|
||||
glBindFramebuffer(GL_FRAMEBUFFER, 0);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Add table
Add a link
Reference in a new issue