mirror of
https://github.com/AquariaOSE/Aquaria.git
synced 2024-11-25 17:53:47 +00:00
09edbf49fd
This commit changes a bunch of internal rendering logic to use FBOs in a way that doesn't violate the GL spec. The water surface FBO's output texture was bound for reading while at the same time rendering the water surface back into the same FBO! Depending on the card/driver/load/zoom factor/moon phase, this could lead to water surface flickering, chessboard effects, and other visual glitches. In order to fix this an extra FBO is needed. In theory this is a simple fix but in practice this is the Aquaria codebase and everything is more complicated than it has any right to be. Couple other things: - FBOs no longer have a depth renderbuffer. Aquaria never uses the depth buffer for anything, so this can go to save some memory. Also remove renderbuffer GL function pointers. - Make FBOs multi-"paged". This is supposedly more efficient on desktop GL, if glDrawBuffer() supports GL_COLOR_ATTACHMENTn. This is currently checked via the presence of glDrawBuffersARB(). - Main core FBO now has 2 pages becaus it's needed for the water surface. The same 2 pages are later used by the after effect manager to ping-pong postprocessing shaders. Remove private after effect FBO. TODO: - There's still a bug in the one-fbo-multiple-binding-points code path. -> for now glDrawBuffersARB must be NULL to work properly.
111 lines
5.3 KiB
C
111 lines
5.3 KiB
C
#ifndef BBGE_RENDERBASE_H
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#define BBGE_RENDERBASE_H
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#include <SDL.h>
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// Define this before including GL headers to avoid pulling in windows.h
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#if defined(_WIN32) && !defined(APIENTRY)
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# define APIENTRY __stdcall
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#endif
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#define GL_GLEXT_LEGACY 1
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#include <GL/gl.h>
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#include <GL/glext.h>
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// Extensions from newer glext.h versions
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#ifndef GL_ARB_debug_output
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#define GL_ARB_debug_output 1
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typedef void (APIENTRY *GLDEBUGPROCARB)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam);
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#define GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB 0x8242
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#define GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH_ARB 0x8243
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#define GL_DEBUG_CALLBACK_FUNCTION_ARB 0x8244
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#define GL_DEBUG_CALLBACK_USER_PARAM_ARB 0x8245
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#define GL_DEBUG_SOURCE_API_ARB 0x8246
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#define GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB 0x8247
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#define GL_DEBUG_SOURCE_SHADER_COMPILER_ARB 0x8248
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#define GL_DEBUG_SOURCE_THIRD_PARTY_ARB 0x8249
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#define GL_DEBUG_SOURCE_APPLICATION_ARB 0x824A
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#define GL_DEBUG_SOURCE_OTHER_ARB 0x824B
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#define GL_DEBUG_TYPE_ERROR_ARB 0x824C
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#define GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB 0x824D
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#define GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB 0x824E
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#define GL_DEBUG_TYPE_PORTABILITY_ARB 0x824F
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#define GL_DEBUG_TYPE_PERFORMANCE_ARB 0x8250
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#define GL_DEBUG_TYPE_OTHER_ARB 0x8251
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#define GL_MAX_DEBUG_MESSAGE_LENGTH_ARB 0x9143
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#define GL_MAX_DEBUG_LOGGED_MESSAGES_ARB 0x9144
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#define GL_DEBUG_LOGGED_MESSAGES_ARB 0x9145
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#define GL_DEBUG_SEVERITY_HIGH_ARB 0x9146
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#define GL_DEBUG_SEVERITY_MEDIUM_ARB 0x9147
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#define GL_DEBUG_SEVERITY_LOW_ARB 0x9148
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typedef void (APIENTRYP PFNGLDEBUGMESSAGECONTROLARBPROC) (GLenum source, GLenum type, GLenum severity, GLsizei count, const GLuint *ids, GLboolean enabled);
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typedef void (APIENTRYP PFNGLDEBUGMESSAGEINSERTARBPROC) (GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *buf);
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typedef void (APIENTRYP PFNGLDEBUGMESSAGECALLBACKARBPROC) (GLDEBUGPROCARB callback, const void *userParam);
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typedef GLuint (APIENTRYP PFNGLGETDEBUGMESSAGELOGARBPROC) (GLuint count, GLsizei bufSize, GLenum *sources, GLenum *types, GLuint *ids, GLenum *severities, GLsizei *lengths, GLchar *messageLog);
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#ifdef GL_GLEXT_PROTOTYPES
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GLAPI void APIENTRY glDebugMessageControlARB (GLenum source, GLenum type, GLenum severity, GLsizei count, const GLuint *ids, GLboolean enabled);
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GLAPI void APIENTRY glDebugMessageInsertARB (GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *buf);
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GLAPI void APIENTRY glDebugMessageCallbackARB (GLDEBUGPROCARB callback, const void *userParam);
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GLAPI GLuint APIENTRY glGetDebugMessageLogARB (GLuint count, GLsizei bufSize, GLenum *sources, GLenum *types, GLuint *ids, GLenum *severities, GLsizei *lengths, GLchar *messageLog);
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#endif
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#endif /* GL_ARB_debug_output */
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#if !defined(GL_ARB_copy_image) && !defined(GL_VERSION_4_3)
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typedef void (APIENTRYP PFNGLCOPYIMAGESUBDATAEXTPROC) (GLuint srcName, GLenum srcTarget, GLint srcLevel, GLint srcX, GLint srcY, GLint srcZ, GLuint dstName, GLenum dstTarget, GLint dstLevel, GLint dstX, GLint dstY, GLint dstZ, GLsizei srcWidth, GLsizei srcHeight, GLsizei srcDepth);
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#endif
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#ifdef _WINDOWS_
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#error windows.h was included! euuugh!
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#endif
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#ifdef APIENTRY
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#undef APIENTRY
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#endif
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#ifdef WINGDIAPI
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#undef WINGDIAPI
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#endif
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extern PFNGLGENERATEMIPMAPEXTPROC glGenerateMipmapEXT;
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// GL_ARB_shader_objects
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extern PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB;
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extern PFNGLDELETEOBJECTARBPROC glDeleteObjectARB;
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extern PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB;
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extern PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB;
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extern PFNGLSHADERSOURCEARBPROC glShaderSourceARB;
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extern PFNGLCOMPILESHADERARBPROC glCompileShaderARB;
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extern PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB;
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extern PFNGLATTACHOBJECTARBPROC glAttachObjectARB;
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extern PFNGLGETINFOLOGARBPROC glGetInfoLogARB;
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extern PFNGLLINKPROGRAMARBPROC glLinkProgramARB;
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extern PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocationARB;
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extern PFNGLGETACTIVEUNIFORMARBPROC glGetActiveUniformARB;
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extern PFNGLUNIFORM1FVARBPROC glUniform1fvARB;
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extern PFNGLUNIFORM2FVARBPROC glUniform2fvARB;
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extern PFNGLUNIFORM3FVARBPROC glUniform3fvARB;
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extern PFNGLUNIFORM4FVARBPROC glUniform4fvARB;
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extern PFNGLUNIFORM1IVARBPROC glUniform1ivARB;
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extern PFNGLUNIFORM2IVARBPROC glUniform2ivARB;
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extern PFNGLUNIFORM3IVARBPROC glUniform3ivARB;
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extern PFNGLUNIFORM4IVARBPROC glUniform4ivARB;
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extern PFNGLISFRAMEBUFFEREXTPROC glIsFramebufferEXT;
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extern PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebufferEXT;
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extern PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffersEXT;
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extern PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT;
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extern PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatusEXT;
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extern PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT;
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extern PFNGLDRAWBUFFERSARBPROC glDrawBuffersARB;
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extern PFNGLGENBUFFERSARBPROC glGenBuffersARB;
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extern PFNGLDELETEBUFFERSARBPROC glDeleteBuffersARB;
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extern PFNGLBUFFERDATAARBPROC glBufferDataARB;
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extern PFNGLBUFFERSUBDATAARBPROC glBufferSubDataARB;
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extern PFNGLBINDBUFFERARBPROC glBindBufferARB;
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extern PFNGLMAPBUFFERARBPROC glMapBufferARB;
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extern PFNGLUNMAPBUFFERARBPROC glUnmapBufferARB;
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extern PFNGLCOPYIMAGESUBDATAEXTPROC glCopyImageSubDataEXT;
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#endif
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