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Shaders

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This commit is contained in:
Kirill Yurkin
2025-03-07 18:08:28 +03:00
parent 719171e7d8
commit e45d21b621
12 changed files with 1185 additions and 4 deletions
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192
engine/render/gl_shared.cpp
View File

@@ -306,6 +306,101 @@ void GL_Load()
LOAD_GL_FUNC(PFNGLGETBUFFERPARAMETERIVPROC, glGetBufferParameteriv); LOAD_GL_FUNC(PFNGLGETBUFFERPARAMETERIVPROC, glGetBufferParameteriv);
LOAD_GL_FUNC(PFNGLGETBUFFERPOINTERVPROC, glGetBufferPointerv); LOAD_GL_FUNC(PFNGLGETBUFFERPOINTERVPROC, glGetBufferPointerv);
// OpenGL 2.0
LOAD_GL_FUNC(PFNGLBLENDEQUATIONSEPARATEPROC, glBlendEquationSeparate);
LOAD_GL_FUNC(PFNGLDRAWBUFFERSPROC, glDrawBuffers);
LOAD_GL_FUNC(PFNGLSTENCILOPSEPARATEPROC, glStencilOpSeparate);
LOAD_GL_FUNC(PFNGLSTENCILFUNCSEPARATEPROC, glStencilFuncSeparate);
LOAD_GL_FUNC(PFNGLSTENCILMASKSEPARATEPROC, glStencilMaskSeparate);
LOAD_GL_FUNC(PFNGLATTACHSHADERPROC, glAttachShader);
LOAD_GL_FUNC(PFNGLBINDATTRIBLOCATIONPROC, glBindAttribLocation);
LOAD_GL_FUNC(PFNGLCOMPILESHADERPROC, glCompileShader);
LOAD_GL_FUNC(PFNGLCREATEPROGRAMPROC, glCreateProgram);
LOAD_GL_FUNC(PFNGLCREATESHADERPROC, glCreateShader);
LOAD_GL_FUNC(PFNGLDELETEPROGRAMPROC, glDeleteProgram);
LOAD_GL_FUNC(PFNGLDELETESHADERPROC, glDeleteShader);
LOAD_GL_FUNC(PFNGLDETACHSHADERPROC, glDetachShader);
LOAD_GL_FUNC(PFNGLDISABLEVERTEXATTRIBARRAYPROC, glDisableVertexAttribArray);
LOAD_GL_FUNC(PFNGLENABLEVERTEXATTRIBARRAYPROC, glEnableVertexAttribArray);
LOAD_GL_FUNC(PFNGLGETACTIVEATTRIBPROC, glGetActiveAttrib);
LOAD_GL_FUNC(PFNGLGETACTIVEUNIFORMPROC, glGetActiveUniform);
LOAD_GL_FUNC(PFNGLGETATTACHEDSHADERSPROC, glGetAttachedShaders);
LOAD_GL_FUNC(PFNGLGETATTRIBLOCATIONPROC, glGetAttribLocation);
LOAD_GL_FUNC(PFNGLGETPROGRAMIVPROC, glGetProgramiv);
LOAD_GL_FUNC(PFNGLGETPROGRAMINFOLOGPROC, glGetProgramInfoLog);
LOAD_GL_FUNC(PFNGLGETSHADERIVPROC, glGetShaderiv);
LOAD_GL_FUNC(PFNGLGETSHADERINFOLOGPROC, glGetShaderInfoLog);
LOAD_GL_FUNC(PFNGLGETSHADERSOURCEPROC, glGetShaderSource);
LOAD_GL_FUNC(PFNGLGETUNIFORMLOCATIONPROC, glGetUniformLocation);
LOAD_GL_FUNC(PFNGLGETUNIFORMFVPROC, glGetUniformfv);
LOAD_GL_FUNC(PFNGLGETUNIFORMIVPROC, glGetUniformiv);
LOAD_GL_FUNC(PFNGLGETVERTEXATTRIBDVPROC, glGetVertexAttribdv);
LOAD_GL_FUNC(PFNGLGETVERTEXATTRIBFVPROC, glGetVertexAttribfv);
LOAD_GL_FUNC(PFNGLGETVERTEXATTRIBIVPROC, glGetVertexAttribiv);
LOAD_GL_FUNC(PFNGLGETVERTEXATTRIBPOINTERVPROC, glGetVertexAttribPointerv);
LOAD_GL_FUNC(PFNGLISPROGRAMPROC, glIsProgram);
LOAD_GL_FUNC(PFNGLISSHADERPROC, glIsShader);
LOAD_GL_FUNC(PFNGLLINKPROGRAMPROC, glLinkProgram);
LOAD_GL_FUNC(PFNGLSHADERSOURCEPROC, glShaderSource);
LOAD_GL_FUNC(PFNGLUSEPROGRAMPROC, glUseProgram);
LOAD_GL_FUNC(PFNGLUNIFORM1FPROC, glUniform1f);
LOAD_GL_FUNC(PFNGLUNIFORM2FPROC, glUniform2f);
LOAD_GL_FUNC(PFNGLUNIFORM3FPROC, glUniform3f);
LOAD_GL_FUNC(PFNGLUNIFORM4FPROC, glUniform4f);
LOAD_GL_FUNC(PFNGLUNIFORM1IPROC, glUniform1i);
LOAD_GL_FUNC(PFNGLUNIFORM2IPROC, glUniform2i);
LOAD_GL_FUNC(PFNGLUNIFORM3IPROC, glUniform3i);
LOAD_GL_FUNC(PFNGLUNIFORM4IPROC, glUniform4i);
LOAD_GL_FUNC(PFNGLUNIFORM1FVPROC, glUniform1fv);
LOAD_GL_FUNC(PFNGLUNIFORM2FVPROC, glUniform2fv);
LOAD_GL_FUNC(PFNGLUNIFORM3FVPROC, glUniform3fv);
LOAD_GL_FUNC(PFNGLUNIFORM4FVPROC, glUniform4fv);
LOAD_GL_FUNC(PFNGLUNIFORM1IVPROC, glUniform1iv);
LOAD_GL_FUNC(PFNGLUNIFORM2IVPROC, glUniform2iv);
LOAD_GL_FUNC(PFNGLUNIFORM3IVPROC, glUniform3iv);
LOAD_GL_FUNC(PFNGLUNIFORM4IVPROC, glUniform4iv);
LOAD_GL_FUNC(PFNGLUNIFORMMATRIX2FVPROC, glUniformMatrix2fv);
LOAD_GL_FUNC(PFNGLUNIFORMMATRIX3FVPROC, glUniformMatrix3fv);
LOAD_GL_FUNC(PFNGLUNIFORMMATRIX4FVPROC, glUniformMatrix4fv);
LOAD_GL_FUNC(PFNGLVALIDATEPROGRAMPROC, glValidateProgram);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB1DPROC, glVertexAttrib1d);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB1DVPROC, glVertexAttrib1dv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB1FPROC, glVertexAttrib1f);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB1FVPROC, glVertexAttrib1fv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB1SPROC, glVertexAttrib1s);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB1SVPROC, glVertexAttrib1sv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB2DPROC, glVertexAttrib2d);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB2DVPROC, glVertexAttrib2dv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB2FPROC, glVertexAttrib2f);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB2FVPROC, glVertexAttrib2fv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB2SPROC, glVertexAttrib2s);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB2SVPROC, glVertexAttrib2sv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB3DPROC, glVertexAttrib3d);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB3DVPROC, glVertexAttrib3dv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB3FPROC, glVertexAttrib3f);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB3FVPROC, glVertexAttrib3fv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB3SPROC, glVertexAttrib3s);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB3SVPROC, glVertexAttrib3sv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4NBVPROC, glVertexAttrib4Nbv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4NIVPROC, glVertexAttrib4Niv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4NSVPROC, glVertexAttrib4Nsv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4NUBPROC, glVertexAttrib4Nub);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4NUBVPROC, glVertexAttrib4Nubv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4NUIVPROC, glVertexAttrib4Nuiv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4NUSVPROC, glVertexAttrib4Nusv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4BVPROC, glVertexAttrib4bv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4DPROC, glVertexAttrib4d);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4DVPROC, glVertexAttrib4dv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4FPROC, glVertexAttrib4f);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4FVPROC, glVertexAttrib4fv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4IVPROC, glVertexAttrib4iv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4SPROC, glVertexAttrib4s);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4SVPROC, glVertexAttrib4sv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4UBVPROC, glVertexAttrib4ubv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4UIVPROC, glVertexAttrib4uiv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIB4USVPROC, glVertexAttrib4usv);
LOAD_GL_FUNC(PFNGLVERTEXATTRIBPOINTERPROC, glVertexAttribPointer);
//LogMsg("GL_Load: glActiveTexture=%i glGenBuffers=%i", !!glActiveTexture, !!glGenBuffers); //LogMsg("GL_Load: glActiveTexture=%i glGenBuffers=%i", !!glActiveTexture, !!glGenBuffers);
g_EXTFramebufferSupport = GL_CheckExtensions("GL_EXT_framebuffer_object"); g_EXTFramebufferSupport = GL_CheckExtensions("GL_EXT_framebuffer_object");
@@ -407,6 +502,101 @@ PFNGLUNMAPBUFFERPROC glUnmapBuffer = NULL;
PFNGLGETBUFFERPARAMETERIVPROC glGetBufferParameteriv = NULL; PFNGLGETBUFFERPARAMETERIVPROC glGetBufferParameteriv = NULL;
PFNGLGETBUFFERPOINTERVPROC glGetBufferPointerv = NULL; PFNGLGETBUFFERPOINTERVPROC glGetBufferPointerv = NULL;
// OpenGL 2.0
PFNGLBLENDEQUATIONSEPARATEPROC glBlendEquationSeparate = NULL;
PFNGLDRAWBUFFERSPROC glDrawBuffers = NULL;
PFNGLSTENCILOPSEPARATEPROC glStencilOpSeparate = NULL;
PFNGLSTENCILFUNCSEPARATEPROC glStencilFuncSeparate = NULL;
PFNGLSTENCILMASKSEPARATEPROC glStencilMaskSeparate = NULL;
PFNGLATTACHSHADERPROC glAttachShader = NULL;
PFNGLBINDATTRIBLOCATIONPROC glBindAttribLocation = NULL;
PFNGLCOMPILESHADERPROC glCompileShader = NULL;
PFNGLCREATEPROGRAMPROC glCreateProgram = NULL;
PFNGLCREATESHADERPROC glCreateShader = NULL;
PFNGLDELETEPROGRAMPROC glDeleteProgram = NULL;
PFNGLDELETESHADERPROC glDeleteShader = NULL;
PFNGLDETACHSHADERPROC glDetachShader = NULL;
PFNGLDISABLEVERTEXATTRIBARRAYPROC glDisableVertexAttribArray = NULL;
PFNGLENABLEVERTEXATTRIBARRAYPROC glEnableVertexAttribArray = NULL;
PFNGLGETACTIVEATTRIBPROC glGetActiveAttrib = NULL;
PFNGLGETACTIVEUNIFORMPROC glGetActiveUniform = NULL;
PFNGLGETATTACHEDSHADERSPROC glGetAttachedShaders = NULL;
PFNGLGETATTRIBLOCATIONPROC glGetAttribLocation = NULL;
PFNGLGETPROGRAMIVPROC glGetProgramiv = NULL;
PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog = NULL;
PFNGLGETSHADERIVPROC glGetShaderiv = NULL;
PFNGLGETSHADERINFOLOGPROC glGetShaderInfoLog = NULL;
PFNGLGETSHADERSOURCEPROC glGetShaderSource = NULL;
PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation = NULL;
PFNGLGETUNIFORMFVPROC glGetUniformfv = NULL;
PFNGLGETUNIFORMIVPROC glGetUniformiv = NULL;
PFNGLGETVERTEXATTRIBDVPROC glGetVertexAttribdv = NULL;
PFNGLGETVERTEXATTRIBFVPROC glGetVertexAttribfv = NULL;
PFNGLGETVERTEXATTRIBIVPROC glGetVertexAttribiv = NULL;
PFNGLGETVERTEXATTRIBPOINTERVPROC glGetVertexAttribPointerv = NULL;
PFNGLISPROGRAMPROC glIsProgram = NULL;
PFNGLISSHADERPROC glIsShader = NULL;
PFNGLLINKPROGRAMPROC glLinkProgram = NULL;
PFNGLSHADERSOURCEPROC glShaderSource = NULL;
PFNGLUSEPROGRAMPROC glUseProgram = NULL;
PFNGLUNIFORM1FPROC glUniform1f = NULL;
PFNGLUNIFORM2FPROC glUniform2f = NULL;
PFNGLUNIFORM3FPROC glUniform3f = NULL;
PFNGLUNIFORM4FPROC glUniform4f = NULL;
PFNGLUNIFORM1IPROC glUniform1i = NULL;
PFNGLUNIFORM2IPROC glUniform2i = NULL;
PFNGLUNIFORM3IPROC glUniform3i = NULL;
PFNGLUNIFORM4IPROC glUniform4i = NULL;
PFNGLUNIFORM1FVPROC glUniform1fv = NULL;
PFNGLUNIFORM2FVPROC glUniform2fv = NULL;
PFNGLUNIFORM3FVPROC glUniform3fv = NULL;
PFNGLUNIFORM4FVPROC glUniform4fv = NULL;
PFNGLUNIFORM1IVPROC glUniform1iv = NULL;
PFNGLUNIFORM2IVPROC glUniform2iv = NULL;
PFNGLUNIFORM3IVPROC glUniform3iv = NULL;
PFNGLUNIFORM4IVPROC glUniform4iv = NULL;
PFNGLUNIFORMMATRIX2FVPROC glUniformMatrix2fv = NULL;
PFNGLUNIFORMMATRIX3FVPROC glUniformMatrix3fv = NULL;
PFNGLUNIFORMMATRIX4FVPROC glUniformMatrix4fv = NULL;
PFNGLVALIDATEPROGRAMPROC glValidateProgram = NULL;
PFNGLVERTEXATTRIB1DPROC glVertexAttrib1d = NULL;
PFNGLVERTEXATTRIB1DVPROC glVertexAttrib1dv = NULL;
PFNGLVERTEXATTRIB1FPROC glVertexAttrib1f = NULL;
PFNGLVERTEXATTRIB1FVPROC glVertexAttrib1fv = NULL;
PFNGLVERTEXATTRIB1SPROC glVertexAttrib1s = NULL;
PFNGLVERTEXATTRIB1SVPROC glVertexAttrib1sv = NULL;
PFNGLVERTEXATTRIB2DPROC glVertexAttrib2d = NULL;
PFNGLVERTEXATTRIB2DVPROC glVertexAttrib2dv = NULL;
PFNGLVERTEXATTRIB2FPROC glVertexAttrib2f = NULL;
PFNGLVERTEXATTRIB2FVPROC glVertexAttrib2fv = NULL;
PFNGLVERTEXATTRIB2SPROC glVertexAttrib2s = NULL;
PFNGLVERTEXATTRIB2SVPROC glVertexAttrib2sv = NULL;
PFNGLVERTEXATTRIB3DPROC glVertexAttrib3d = NULL;
PFNGLVERTEXATTRIB3DVPROC glVertexAttrib3dv = NULL;
PFNGLVERTEXATTRIB3FPROC glVertexAttrib3f = NULL;
PFNGLVERTEXATTRIB3FVPROC glVertexAttrib3fv = NULL;
PFNGLVERTEXATTRIB3SPROC glVertexAttrib3s = NULL;
PFNGLVERTEXATTRIB3SVPROC glVertexAttrib3sv = NULL;
PFNGLVERTEXATTRIB4NBVPROC glVertexAttrib4Nbv = NULL;
PFNGLVERTEXATTRIB4NIVPROC glVertexAttrib4Niv = NULL;
PFNGLVERTEXATTRIB4NSVPROC glVertexAttrib4Nsv = NULL;
PFNGLVERTEXATTRIB4NUBPROC glVertexAttrib4Nub = NULL;
PFNGLVERTEXATTRIB4NUBVPROC glVertexAttrib4Nubv = NULL;
PFNGLVERTEXATTRIB4NUIVPROC glVertexAttrib4Nuiv = NULL;
PFNGLVERTEXATTRIB4NUSVPROC glVertexAttrib4Nusv = NULL;
PFNGLVERTEXATTRIB4BVPROC glVertexAttrib4bv = NULL;
PFNGLVERTEXATTRIB4DPROC glVertexAttrib4d = NULL;
PFNGLVERTEXATTRIB4DVPROC glVertexAttrib4dv = NULL;
PFNGLVERTEXATTRIB4FPROC glVertexAttrib4f = NULL;
PFNGLVERTEXATTRIB4FVPROC glVertexAttrib4fv = NULL;
PFNGLVERTEXATTRIB4IVPROC glVertexAttrib4iv = NULL;
PFNGLVERTEXATTRIB4SPROC glVertexAttrib4s = NULL;
PFNGLVERTEXATTRIB4SVPROC glVertexAttrib4sv = NULL;
PFNGLVERTEXATTRIB4UBVPROC glVertexAttrib4ubv = NULL;
PFNGLVERTEXATTRIB4UIVPROC glVertexAttrib4uiv = NULL;
PFNGLVERTEXATTRIB4USVPROC glVertexAttrib4usv = NULL;
PFNGLVERTEXATTRIBPOINTERPROC glVertexAttribPointer = NULL;
// GL_EXT_framebuffer_object // GL_EXT_framebuffer_object
PFNGLISRENDERBUFFEREXTPROC glIsRenderbufferEXT = NULL; PFNGLISRENDERBUFFEREXTPROC glIsRenderbufferEXT = NULL;
PFNGLBINDRENDERBUFFEREXTPROC glBindRenderbufferEXT = NULL; PFNGLBINDRENDERBUFFEREXTPROC glBindRenderbufferEXT = NULL;
@@ -424,4 +614,4 @@ PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT =
PFNGLFRAMEBUFFERTEXTURE3DEXTPROC glFramebufferTexture3DEXT = NULL; PFNGLFRAMEBUFFERTEXTURE3DEXTPROC glFramebufferTexture3DEXT = NULL;
PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC glFramebufferRenderbufferEXT = NULL; PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC glFramebufferRenderbufferEXT = NULL;
PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC glGetFramebufferAttachmentParameterivEXT = NULL; PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC glGetFramebufferAttachmentParameterivEXT = NULL;
PFNGLGENERATEMIPMAPEXTPROC glGenerateMipmapEXT = NULL; PFNGLGENERATEMIPMAPEXTPROC glGenerateMipmapEXT = NULL;

95
engine/render/gl_shared.h
View File

@@ -95,6 +95,101 @@ extern PFNGLUNMAPBUFFERPROC glUnmapBuffer;
extern PFNGLGETBUFFERPARAMETERIVPROC glGetBufferParameteriv; extern PFNGLGETBUFFERPARAMETERIVPROC glGetBufferParameteriv;
extern PFNGLGETBUFFERPOINTERVPROC glGetBufferPointerv; extern PFNGLGETBUFFERPOINTERVPROC glGetBufferPointerv;
// OpenGL 2.0
extern PFNGLBLENDEQUATIONSEPARATEPROC glBlendEquationSeparate;
extern PFNGLDRAWBUFFERSPROC glDrawBuffers;
extern PFNGLSTENCILOPSEPARATEPROC glStencilOpSeparate;
extern PFNGLSTENCILFUNCSEPARATEPROC glStencilFuncSeparate;
extern PFNGLSTENCILMASKSEPARATEPROC glStencilMaskSeparate;
extern PFNGLATTACHSHADERPROC glAttachShader;
extern PFNGLBINDATTRIBLOCATIONPROC glBindAttribLocation;
extern PFNGLCOMPILESHADERPROC glCompileShader;
extern PFNGLCREATEPROGRAMPROC glCreateProgram;
extern PFNGLCREATESHADERPROC glCreateShader;
extern PFNGLDELETEPROGRAMPROC glDeleteProgram;
extern PFNGLDELETESHADERPROC glDeleteShader;
extern PFNGLDETACHSHADERPROC glDetachShader;
extern PFNGLDISABLEVERTEXATTRIBARRAYPROC glDisableVertexAttribArray;
extern PFNGLENABLEVERTEXATTRIBARRAYPROC glEnableVertexAttribArray;
extern PFNGLGETACTIVEATTRIBPROC glGetActiveAttrib;
extern PFNGLGETACTIVEUNIFORMPROC glGetActiveUniform;
extern PFNGLGETATTACHEDSHADERSPROC glGetAttachedShaders;
extern PFNGLGETATTRIBLOCATIONPROC glGetAttribLocation;
extern PFNGLGETPROGRAMIVPROC glGetProgramiv;
extern PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog;
extern PFNGLGETSHADERIVPROC glGetShaderiv;
extern PFNGLGETSHADERINFOLOGPROC glGetShaderInfoLog;
extern PFNGLGETSHADERSOURCEPROC glGetShaderSource;
extern PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation;
extern PFNGLGETUNIFORMFVPROC glGetUniformfv;
extern PFNGLGETUNIFORMIVPROC glGetUniformiv;
extern PFNGLGETVERTEXATTRIBDVPROC glGetVertexAttribdv;
extern PFNGLGETVERTEXATTRIBFVPROC glGetVertexAttribfv;
extern PFNGLGETVERTEXATTRIBIVPROC glGetVertexAttribiv;
extern PFNGLGETVERTEXATTRIBPOINTERVPROC glGetVertexAttribPointerv;
extern PFNGLISPROGRAMPROC glIsProgram;
extern PFNGLISSHADERPROC glIsShader;
extern PFNGLLINKPROGRAMPROC glLinkProgram;
extern PFNGLSHADERSOURCEPROC glShaderSource;
extern PFNGLUSEPROGRAMPROC glUseProgram;
extern PFNGLUNIFORM1FPROC glUniform1f;
extern PFNGLUNIFORM2FPROC glUniform2f;
extern PFNGLUNIFORM3FPROC glUniform3f;
extern PFNGLUNIFORM4FPROC glUniform4f;
extern PFNGLUNIFORM1IPROC glUniform1i;
extern PFNGLUNIFORM2IPROC glUniform2i;
extern PFNGLUNIFORM3IPROC glUniform3i;
extern PFNGLUNIFORM4IPROC glUniform4i;
extern PFNGLUNIFORM1FVPROC glUniform1fv;
extern PFNGLUNIFORM2FVPROC glUniform2fv;
extern PFNGLUNIFORM3FVPROC glUniform3fv;
extern PFNGLUNIFORM4FVPROC glUniform4fv;
extern PFNGLUNIFORM1IVPROC glUniform1iv;
extern PFNGLUNIFORM2IVPROC glUniform2iv;
extern PFNGLUNIFORM3IVPROC glUniform3iv;
extern PFNGLUNIFORM4IVPROC glUniform4iv;
extern PFNGLUNIFORMMATRIX2FVPROC glUniformMatrix2fv;
extern PFNGLUNIFORMMATRIX3FVPROC glUniformMatrix3fv;
extern PFNGLUNIFORMMATRIX4FVPROC glUniformMatrix4fv;
extern PFNGLVALIDATEPROGRAMPROC glValidateProgram;
extern PFNGLVERTEXATTRIB1DPROC glVertexAttrib1d;
extern PFNGLVERTEXATTRIB1DVPROC glVertexAttrib1dv;
extern PFNGLVERTEXATTRIB1FPROC glVertexAttrib1f;
extern PFNGLVERTEXATTRIB1FVPROC glVertexAttrib1fv;
extern PFNGLVERTEXATTRIB1SPROC glVertexAttrib1s;
extern PFNGLVERTEXATTRIB1SVPROC glVertexAttrib1sv;
extern PFNGLVERTEXATTRIB2DPROC glVertexAttrib2d;
extern PFNGLVERTEXATTRIB2DVPROC glVertexAttrib2dv;
extern PFNGLVERTEXATTRIB2FPROC glVertexAttrib2f;
extern PFNGLVERTEXATTRIB2FVPROC glVertexAttrib2fv;
extern PFNGLVERTEXATTRIB2SPROC glVertexAttrib2s;
extern PFNGLVERTEXATTRIB2SVPROC glVertexAttrib2sv;
extern PFNGLVERTEXATTRIB3DPROC glVertexAttrib3d;
extern PFNGLVERTEXATTRIB3DVPROC glVertexAttrib3dv;
extern PFNGLVERTEXATTRIB3FPROC glVertexAttrib3f;
extern PFNGLVERTEXATTRIB3FVPROC glVertexAttrib3fv;
extern PFNGLVERTEXATTRIB3SPROC glVertexAttrib3s;
extern PFNGLVERTEXATTRIB3SVPROC glVertexAttrib3sv;
extern PFNGLVERTEXATTRIB4NBVPROC glVertexAttrib4Nbv;
extern PFNGLVERTEXATTRIB4NIVPROC glVertexAttrib4Niv;
extern PFNGLVERTEXATTRIB4NSVPROC glVertexAttrib4Nsv;
extern PFNGLVERTEXATTRIB4NUBPROC glVertexAttrib4Nub;
extern PFNGLVERTEXATTRIB4NUBVPROC glVertexAttrib4Nubv;
extern PFNGLVERTEXATTRIB4NUIVPROC glVertexAttrib4Nuiv;
extern PFNGLVERTEXATTRIB4NUSVPROC glVertexAttrib4Nusv;
extern PFNGLVERTEXATTRIB4BVPROC glVertexAttrib4bv;
extern PFNGLVERTEXATTRIB4DPROC glVertexAttrib4d;
extern PFNGLVERTEXATTRIB4DVPROC glVertexAttrib4dv;
extern PFNGLVERTEXATTRIB4FPROC glVertexAttrib4f;
extern PFNGLVERTEXATTRIB4FVPROC glVertexAttrib4fv;
extern PFNGLVERTEXATTRIB4IVPROC glVertexAttrib4iv;
extern PFNGLVERTEXATTRIB4SPROC glVertexAttrib4s;
extern PFNGLVERTEXATTRIB4SVPROC glVertexAttrib4sv;
extern PFNGLVERTEXATTRIB4UBVPROC glVertexAttrib4ubv;
extern PFNGLVERTEXATTRIB4UIVPROC glVertexAttrib4uiv;
extern PFNGLVERTEXATTRIB4USVPROC glVertexAttrib4usv;
extern PFNGLVERTEXATTRIBPOINTERPROC glVertexAttribPointer;
// GL_EXT_framebuffer_object // GL_EXT_framebuffer_object
extern PFNGLISRENDERBUFFEREXTPROC glIsRenderbufferEXT; extern PFNGLISRENDERBUFFEREXTPROC glIsRenderbufferEXT;
extern PFNGLBINDRENDERBUFFEREXTPROC glBindRenderbufferEXT; extern PFNGLBINDRENDERBUFFEREXTPROC glBindRenderbufferEXT;

3
engine/render/render.cpp
View File

@@ -8,6 +8,7 @@
#define RENDER_WINDOW_NAME "UNEASE Alpha" #define RENDER_WINDOW_NAME "UNEASE Alpha"
HWND hWnd = NULL; HWND hWnd = NULL;
View g_renderView;
LRESULT CALLBACK WndProc (HWND hWnd, UINT message, LRESULT CALLBACK WndProc (HWND hWnd, UINT message,
WPARAM wParam, LPARAM lParam) WPARAM wParam, LPARAM lParam)
@@ -80,6 +81,8 @@ void R_Init()
{ {
LogMsg("--- R_Init ---"); LogMsg("--- R_Init ---");
memset(&g_renderView, 0, sizeof(g_renderView));
// Create window // Create window
R_CreateWindow(1024, 768); R_CreateWindow(1024, 768);

9
engine/render/renderdevice.cpp
View File

@@ -21,6 +21,7 @@ RenderDevice::RenderDevice()
m_blending = false; m_blending = false;
m_activeReadRT = NULL; m_activeReadRT = NULL;
m_activeWriteRT = NULL; m_activeWriteRT = NULL;
m_backfaceCull = false;
} }
RenderDevice::~RenderDevice() RenderDevice::~RenderDevice()
@@ -158,6 +159,14 @@ void RenderDevice::SetWriteRenderTarget(RenderTarget* renderTarget)
} }
} }
void RenderDevice::SetBackfaceCull(bool value)
{
if (m_backfaceCull != value) {
m_backfaceCull = value;
value ? glEnable(GL_CULL_FACE) : glDisable(GL_CULL_FACE);
}
}
void RenderDevice::SetViewport(int x, int y, int w, int h) void RenderDevice::SetViewport(int x, int y, int w, int h)
{ {
glViewport(x, y, w, h); glViewport(x, y, w, h);

4
engine/render/renderdevice.h
View File

@@ -31,6 +31,8 @@ public:
void SetReadRenderTarget(RenderTarget* renderTarget); void SetReadRenderTarget(RenderTarget* renderTarget);
void SetWriteRenderTarget(RenderTarget* renderTarget); void SetWriteRenderTarget(RenderTarget* renderTarget);
void SetBackfaceCull(bool value);
void SetViewport(int x, int y, int w, int h); void SetViewport(int x, int y, int w, int h);
// glBlitFramebuffer // glBlitFramebuffer
@@ -52,6 +54,8 @@ private:
bool m_blending; bool m_blending;
BlendFactor m_srcBlendFactor; BlendFactor m_srcBlendFactor;
BlendFactor m_destBlendFactor; BlendFactor m_destBlendFactor;
bool m_backfaceCull;
}; };
extern RenderDevice* g_renderDevice; extern RenderDevice* g_renderDevice;

92
engine/render/shader.cpp Normal file
View File

@@ -0,0 +1,92 @@
#include <assert.h>
#include "utils/logger.h"
#include "render/shader.h"
#include "filesystem/filemanager.h"
#include "filesystem/stream.h"
GLuint CreateShader(GLenum shaderType, const char* filename)
{
StreamBase* stream = g_fileManager->OpenStream( filename, FileAccess_Read );
if ( !stream )
{
LogMsg( "CreateShader: failed to open file %s", filename );
assert( 0 );
}
stream->Seek( Seek_End, 0 );
size_t length = stream->Tell();
stream->Seek( Seek_Begin, 0 );
std::string content;
content.resize( length + 1 );
stream->Read( (void*)content.data(), length );
content[length] = '\0';
const char* contentCStr = content.c_str();
GLuint shader = glCreateShader(shaderType);
glShaderSource(shader, 1, &contentCStr, NULL);
glCompileShader(shader);
int success;
char infoLog[512];
glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
if (!success)
{
glGetShaderInfoLog(shader, 512, NULL, infoLog);
LogMsg("Failed to compile shader %s\n%s", filename, infoLog);
}
LogMsg("created shader from file %s", filename);
return shader;
}
Shader::Shader() :
m_name(nullptr),
m_stride(0),
m_layout_count(0)
{
}
Shader::~Shader()
{
if (m_name)
free( (void*)m_name );
Destroy();
}
void Shader::Create(const char* name, const char* vsfilepath, const char* psfilepath)
{
//m_name = strdup( name );
GLuint vertexShader = CreateShader(GL_VERTEX_SHADER, vsfilepath);
GLuint fragmentShader = CreateShader(GL_FRAGMENT_SHADER, psfilepath);
m_program = glCreateProgram();
glAttachShader(m_program, vertexShader);
glAttachShader(m_program, fragmentShader);
AllocateAttributes();
glLinkProgram(m_program);
glDeleteShader(vertexShader);
glDeleteShader(fragmentShader);
int success;
char infoLog[512];
glGetProgramiv(m_program, GL_LINK_STATUS, &success);
if (!success)
{
glGetProgramInfoLog(m_program, 512, NULL, infoLog);
LogMsg("Failed to link program %s", infoLog);
}
}
void Shader::Destroy()
{
glDeleteProgram(m_program);
}

98
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#ifndef SHADER_H
#define SHADER_H
#include <stdint.h>
#include "gl_shared.h"
const int SHADERUNIFORM_MAX_COUNT = 16;
const int INPUT_LAYOUT_MAX_COUNT = 8;
enum VertexAttribute_t {
VERTEXATTR_VEC2,
VERTEXATTR_VEC3,
VERTEXATTR_VEC4,
VERTEXATTR_MAX
};
enum ShaderSemantic_t {
SHADERSEMANTIC_POSITION,
SHADERSEMANTIC_COLOR,
SHADERSEMANTIC_TEXCOORD,
SHADERSEMANTIC_TEXCOORD0,
SHADERSEMANTIC_TEXCOORD1,
SHADERSEMANTIC_NORMAL,
SHADERSEMANTIC_TANGENT,
SHADERSEMANTIC_BITANGENT,
SHADERSEMANTIC_MAX
};
enum ShaderUniformType_t {
SHADERUNIFORM_FLOAT,
SHADERUNIFORM_VEC2,
SHADERUNIFORM_VEC3,
SHADERUNIFORM_VEC4,
SHADERUNIFORM_MAT4,
SHADERUNIFORM_MAX
};
struct InputLayoutDesc_t {
VertexAttribute_t attribute;
ShaderSemantic_t semantic;
};
struct ShaderUniformDesc_t {
ShaderUniformType_t type;
const char* name;
size_t size;
};
class Shader
{
public:
Shader();
~Shader();
void Create(const char* name, const char* vsfilepath, const char* psfilepath);
void Destroy();
void AllocateAttributes();
public:
// TEMP SOLUTION
ShaderUniformDesc_t m_uniform_desc[SHADERUNIFORM_MAX_COUNT];
size_t m_uniform_count;
InputLayoutDesc_t m_layouts[INPUT_LAYOUT_MAX_COUNT];
size_t m_layout_count;
GLuint m_glLayouts[INPUT_LAYOUT_MAX_COUNT];
// #TODO: REMOVE PLEASE
int m_stride;
const char* m_name;
GLuint m_program;
};
inline int GetVertexAttributeSize( VertexAttribute_t attrib )
{
switch ( attrib )
{
case VERTEXATTR_VEC2:
return 2;
case VERTEXATTR_VEC3:
return 3;
case VERTEXATTR_VEC4:
return 4;
default:
break;
}
return 0;
}
#endif // !SHADER_H

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#include <assert.h>
#include <algorithm>
#include "utils/logger.h"
#include "render/shadersystem.h"
#include "render/shader.h"
#include <render/gl_shared.h>
static const char* g_uniformNameTable[UNIFORM_MAX] =
{
"u_modelMatrix",
"u_viewMatrix",
"u_projectionMatrix",
"u_modelViewProjection",
"u_customColor",
"u_sunDirection",
"u_sunColor",
"u_sunAmbientColor",
};
static const char* g_samplersNameTable[SAMPLER_MAX] =
{
"u_albedoTexture",
"u_normalTexture",
"u_lightmapTexture",
};
ShaderSystem* g_shaderSystem = nullptr;
ShaderSystem::ShaderSystem()
{
}
ShaderSystem::~ShaderSystem()
{
}
void ShaderSystem::Init()
{
LogMsg("Initializing Shader System ...");
}
void ShaderSystem::Shutdown()
{
for (int i = 0; i < m_shaders.size(); i++)
{
ShaderData& shaderData = m_shaders[i];
if (shaderData.shader)
{
delete shaderData.shader;
shaderData.shader = nullptr;
}
}
m_shaders.clear();
}
Shader* ShaderSystem::CreateShader(const char* name, const char* vsfilepath, const char* psfilepath, InputLayoutDesc_t* inputLayout /*= nullptr*/, int inputLayoutCount/* = 0*/)
{
for (int i = 0; i < m_shaders.size(); i++)
{
if (m_shaders[i].name == name)
return m_shaders[i].shader;
}
Shader* pShader = new Shader();
if ( inputLayout && inputLayoutCount > 0 )
{
memcpy( pShader->m_layouts, inputLayout, inputLayoutCount * sizeof( InputLayoutDesc_t ) );
pShader->m_layout_count = inputLayoutCount;
}
pShader->Create( name, vsfilepath, psfilepath );
ShaderData shaderData = { name, pShader };
m_shaders.push_back(shaderData);
return pShader;
}
size_t g_vertex_attribs_sizetable[VERTEXATTR_MAX] =
{
2, // VERTEXATTR_VEC2
3, // VERTEXATTR_VEC3
4, // VERTEXATTR_VEC4
};
size_t g_vertex_attribs_realsizetable[VERTEXATTR_MAX] =
{
8, // VERTEXATTR_VEC2
12, // VERTEXATTR_VEC3
16, // VERTEXATTR_VEC4
};
void ApplyVertexFormat(const Shader* shader, size_t stride)
{
size_t appliedOffset = 0;
for (int i = 0; i < shader->m_layout_count; i++)
{
const InputLayoutDesc_t* layoutEntry = &shader->m_layouts[i];
glEnableVertexAttribArray(GLuint(i));
glVertexAttribPointer(GLuint(i), GLint(g_vertex_attribs_sizetable[layoutEntry->attribute]),
GL_FLOAT, GL_FALSE, static_cast<GLsizei>(stride),
(appliedOffset > 0) ? (void*)(appliedOffset * sizeof(float)) : (void*)0);
appliedOffset += g_vertex_attribs_sizetable[layoutEntry->attribute];
}
}
void ShaderSystem::SetShader(const Shader* shader)
{
assert( shader );
glUseProgram( shader->m_program );
// apply input layout
//for ( int i = 0; i < shader->m_layout_count; i++ )
//{
// const InputLayoutDesc_t& layout = shader->m_layouts[ i ];
//
// //glEnableVertexAttribArray( shader->m_glLayouts[ i ] );
// //glVertexAttribPointer( shader->m_glLayouts[ i ], GetVertexAttributeSize( layout.attribute ), GL_FLOAT, GL_FALSE, shader->m_stride, NULL );
// glEnableVertexAttribArray( i );
// glVertexAttribPointer( i, GetVertexAttributeSize( layout.attribute ), GL_FLOAT, GL_FALSE, shader->m_stride, NULL );
//}
ApplyVertexFormat( shader, shader->m_stride );
//for ( int i = 0; i < shader->m_layout_count; i++ )
//{
// const InputLayoutDesc_t& layout = shader->m_layouts[ i ];
//
// glEnableVertexAttribArray( shader->m_glLayouts[ i ] );
// glVertexAttribPointer( shader->m_glLayouts[ i ], GetVertexAttributeSize( layout.attribute ), GL_FLOAT, GL_FALSE, shader->m_stride, NULL );
//}
}
void ShaderSystem::SetUniformSampler(const Shader* shader, ShaderSamplers_t sampler, int index)
{
glGetError();
GLint uniformLocation = glGetUniformLocation(shader->m_program, g_samplersNameTable[sampler]);
glUniform1i(uniformLocation, static_cast<GLint>(index));
}
void ShaderSystem::SetUniformFloat4(const Shader* shader, ShaderUniform_t uniform, const void* data)
{
GLint location = glGetUniformLocation( shader->m_program, g_uniformNameTable[ uniform ] );
glUniform4fv( location, 1, ( const GLfloat* )data );
}
void ShaderSystem::SetUniformMatrix( const Shader* shader, ShaderUniform_t uniform, const void* data )
{
GLint location = glGetUniformLocation( shader->m_program, g_uniformNameTable[ uniform ] );
glUniformMatrix4fv( location, 1, GL_FALSE, ( const GLfloat* )data );
}
// #TODO: Move out
static const char* s_attributeNameTable[SHADERSEMANTIC_MAX] =
{
"a_position",//SHADERSEMANTIC_POSITION,
"a_color", //SHADERSEMANTIC_COLOR
"a_texcoord",//SHADERSEMANTIC_TEXCOORD,
"a_texcoord0", //SHADERSEMANTIC_TEXCOORD0,
"a_texcoord1",//SHADERSEMANTIC_TEXCOORD1,
"a_normal",//SHADERSEMANTIC_NORMAL,
"a_tangent",//SHADERSEMANTIC_TANGENT,
"a_bitangent"//SHADERSEMANTIC_BITANGENT,
};
void Shader::AllocateAttributes()
{
// Allocate input layout
for ( int i = 0; i < m_layout_count; i++ )
{
const InputLayoutDesc_t& layout = m_layouts[ i ];
// Msg( "Shader::AllocateAttributes: Bind %i as %s", i, s_attributeNameTable[ layout.semantic ] );
glBindAttribLocation( m_program, i, s_attributeNameTable[ layout.semantic ] );
GL_CHECK_ERROR();
// m_glLayouts[ i ] = glGetAttribLocation( m_program, s_attributeNameTable[i] );
// assert( m_glLayouts[ i ] );
}
}

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#ifndef SHADERSYSTEM_H
#define SHADERSYSTEM_H
#include <string>
#include <vector>
#include "render/shader.h"
enum ShaderUniform_t
{
UNIFORM_MODEL_MATRIX,
UNIFORM_VIEW_MATRIX,
UNIFORM_PROJ_MATRIX,
UNIFORM_MVP_MATRIX,
UNIFORM_CUSTOM_COLOR,
UNIFORM_SUN_DIRECTION,
UNIFORM_SUN_COLOR,
UNIFORM_SUN_AMBIENT,
UNIFORM_MAX,
};
enum ShaderSamplers_t
{
SAMPLER_ALBEDO,
SAMPLER_NORMAL,
SAMPLER_LIGHTMAP,
SAMPLER_MAX
};
class ShaderSystem
{
public:
ShaderSystem();
~ShaderSystem();
void Init();
void Shutdown();
Shader* CreateShader(const char* name, const char* vsfilepath, const char* psfilepath, InputLayoutDesc_t* inputLayout = nullptr, int inputLayoutCount = 0);
void SetShader(const Shader* shader);
void SetUniformSampler( const Shader* shader, ShaderSamplers_t sampler, int index );
void SetUniformFloat4( const Shader* shader, ShaderUniform_t uniform, const void* data );
void SetUniformMatrix( const Shader* shader, ShaderUniform_t uniform, const void* data );
private:
struct ShaderData
{
std::string name;
Shader* shader;
};
std::vector<ShaderData> m_shaders;
};
extern ShaderSystem* g_shaderSystem;
#endif // !SHADERSYSTEM_H

260
engine/render/ui.cpp Normal file
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@@ -0,0 +1,260 @@
#include <cstdint>
#include <cmath>
#include <cassert>
#include "utils/logger.h"
#include "render/ui.h"
#include "render/vertexbuffer.h"
#include "render/indexbuffer.h"
#include "render/renderdevice.h"
#include "render/shadersystem.h"
#include "render/texturesmanager.h"
#include "render/texture2d.h"
struct DrawInfo
{
uint16_t vxcount;
uint16_t idxcount;
};
struct UIGlobals {
VertexBuffer* vb;
IndexBuffer* ib;
Shader* shader;
Texture2D* activetexture = nullptr;
Texture2D* defaultTexture = nullptr;
UIVertex* vertices = nullptr;
uint16_t* indices = nullptr;
DrawInfo drawInfo[MAX_UI_VERTICES];
uint16_t count = 0;
uint16_t position = 0;
uint16_t Indexposition = 0;
uint16_t currentIdx = 0;
} g_ui;
void uiInit()
{
//////////////////////////////////////////////////////////////////////////
// Buffer and context state
// Buffer creation
g_ui.vb = g_renderDevice->CreateVertexBuffer(nullptr, MAX_UI_VERTICES, true);
g_ui.ib = g_renderDevice->CreateIndexBuffer(nullptr, MAX_UI_INDICES, true);
// Create shader
InputLayoutDesc_t inputLayout[] =
{
{ VERTEXATTR_VEC2, SHADERSEMANTIC_POSITION },
{ VERTEXATTR_VEC2, SHADERSEMANTIC_TEXCOORD },
{ VERTEXATTR_VEC4, SHADERSEMANTIC_COLOR },
};
g_ui.shader = g_shaderSystem->CreateShader("ui", "content/shaders/ui_base.vs", "content/shaders/ui_tex.ps", inputLayout, sizeof(inputLayout) / sizeof(inputLayout[0]));
g_ui.shader->m_stride = sizeof( UIVertex );
g_ui.defaultTexture = g_texturesManager->LoadTexture2D("$white$");
}
void uiShutdown()
{
delete g_ui.ib;
delete g_ui.vb;
}
void uiDumpBuffers()
{
LogMsg( "--- UI Vertex Buffer ---" );
g_ui.vertices = (UIVertex*)g_ui.vb->MapBuffer(BA_WRITE_ONLY);
assert(g_ui.vertices);
for ( int i = 0; i < g_ui.position; i++ )
{
LogMsg( "%i: POSITION = %.2f %.2f", i, g_ui.vertices[ i ].position.x, g_ui.vertices[ i ].position.y );
LogMsg( "%i: TEXCOORD = %.2f %.2f", i, g_ui.vertices[ i ].uv.x, g_ui.vertices[ i ].uv.y );
LogMsg( "%i: COLOR = %.2f %.2f %.2f %.2f", i,
g_ui.vertices[ i ].color.x,
g_ui.vertices[ i ].color.y,
g_ui.vertices[ i ].color.z,
g_ui.vertices[ i ].color.w);
}
LogMsg( "------------------------" );
g_ui.vb->UnmapBuffer();
}
void uiBeginRender()
{
g_ui.vertices = (UIVertex*)g_ui.vb->MapBuffer(BA_WRITE_ONLY);
assert(g_ui.vertices);
g_ui.indices = (uint16_t*)g_ui.ib->MapBuffer(BA_WRITE_ONLY);
assert(g_ui.indices);
}
void uiDrawQuad(const Vec2& a, const Vec2& b, const Vec2& c, const Vec2& d, const Vec4& color)
{
DrawInfo& drawInfo = g_ui.drawInfo[g_ui.count];
drawInfo.vxcount = 4;
drawInfo.idxcount = 6;
g_ui.indices[g_ui.Indexposition + 0] = g_ui.currentIdx;
g_ui.indices[g_ui.Indexposition + 1] = g_ui.currentIdx + 1;
g_ui.indices[g_ui.Indexposition + 2] = g_ui.currentIdx + 2;
g_ui.indices[g_ui.Indexposition + 3] = g_ui.currentIdx;
g_ui.indices[g_ui.Indexposition + 4] = g_ui.currentIdx + 2;
g_ui.indices[g_ui.Indexposition + 5] = g_ui.currentIdx + 3;
g_ui.vertices[g_ui.position + 0].position = a; g_ui.vertices[g_ui.position + 0].color = color;
g_ui.vertices[g_ui.position + 1].position = b; g_ui.vertices[g_ui.position + 1].color = color;
g_ui.vertices[g_ui.position + 2].position = c; g_ui.vertices[g_ui.position + 2].color = color;
g_ui.vertices[g_ui.position + 3].position = d; g_ui.vertices[g_ui.position + 3].color = color;
// texcoord
g_ui.vertices[g_ui.position + 0].uv = Vec2{ 0.0f, 1.0f };
g_ui.vertices[g_ui.position + 1].uv = Vec2{ 1.0f, 1.0f };
g_ui.vertices[g_ui.position + 2].uv = Vec2{ 1.0f, 0.0f };
g_ui.vertices[g_ui.position + 3].uv = Vec2{ 0.0f, 0.0f };
g_ui.currentIdx += 4;
g_ui.Indexposition += 6;
g_ui.position += 4;
g_ui.count++;
}
static inline float Rsqrt(float x) { return 1.0f / sqrtf(x); }
#define NORMALIZE2F_OVER_ZERO(VX,VY) { float d2 = VX*VX + VY*VY; if (d2 > 0.0f) { float inv_len = Rsqrt(d2); VX *= inv_len; VY *= inv_len; } } (void)0
void uiDrawLines(const Vec2* drawPoints, const size_t pointsCount, bool closed, const Vec4& color)
{
float thickness = 2.1f;
const int count = closed ? pointsCount : pointsCount - 1;
const int vtxCount = (count) * 4;
const int idxCount = (count) * 6;
for (int i1 = 0; i1 < count; i1++)
{
const int i2 = (i1 + 1) == pointsCount ? 0 : i1 + 1;
const Vec2& p1 = drawPoints[i1];
const Vec2& p2 = drawPoints[i2];
float dx = p2.x - p1.x;
float dy = p2.y - p1.y;
NORMALIZE2F_OVER_ZERO(dx, dy);
dx *= (thickness * 0.5f);
dy *= (thickness * 0.5f);
g_ui.vertices[g_ui.position + 0].position.x = p1.x + dy; g_ui.vertices[g_ui.position + 0].position.y = p1.y - dx; g_ui.vertices[g_ui.position + 0].color = color;
g_ui.vertices[g_ui.position + 1].position.x = p2.x + dy; g_ui.vertices[g_ui.position + 1].position.y = p2.y - dx; g_ui.vertices[g_ui.position + 1].color = color;
g_ui.vertices[g_ui.position + 2].position.x = p2.x - dy; g_ui.vertices[g_ui.position + 2].position.y = p2.y + dx; g_ui.vertices[g_ui.position + 2].color = color;
g_ui.vertices[g_ui.position + 3].position.x = p1.x - dy; g_ui.vertices[g_ui.position + 3].position.y = p1.y + dx; g_ui.vertices[g_ui.position + 3].color = color;
g_ui.indices[g_ui.Indexposition + 0] = g_ui.currentIdx;
g_ui.indices[g_ui.Indexposition + 1] = g_ui.currentIdx + 1;
g_ui.indices[g_ui.Indexposition + 2] = g_ui.currentIdx + 2;
g_ui.indices[g_ui.Indexposition + 3] = g_ui.currentIdx;
g_ui.indices[g_ui.Indexposition + 4] = g_ui.currentIdx + 2;
g_ui.indices[g_ui.Indexposition + 5] = g_ui.currentIdx + 3;
g_ui.currentIdx += 4;
g_ui.Indexposition += 6;
g_ui.position += 4;
DrawInfo& drawInfo = g_ui.drawInfo[g_ui.count];
drawInfo.vxcount = 4;
drawInfo.idxcount = 6;
g_ui.count++;
}
}
void uiDrawRect(const Vec2& position, const Vec2& size, const Vec4& color)
{
Vec2 quad[4];
quad[0] = { position.x, position.y };
quad[1] = { position.x + size.x, position.y };
quad[2] = { position.x + size.x, position.y + size.y };
quad[3] = { position.x, position.y + size.y };
uiDrawQuad(quad[0], quad[1], quad[2], quad[3], color);
}
void uiSetTexture(Texture2D* texture)
{
g_ui.activetexture = texture ? texture : g_ui.defaultTexture;
}
void uiSetTextureByName(const char* filename)
{
uiSetTexture( g_texturesManager->LoadTexture2D( filename ) );
}
void uiEndRender()
{
g_ui.indices = nullptr;
g_ui.vertices = nullptr;
g_ui.ib->UnmapBuffer();
g_ui.vb->UnmapBuffer();
int x = 0, y = 0, w = g_renderView.width, h = g_renderView.height;
g_renderDevice->SetViewport(x, y, w, h);
float L = x;
float R = x + w;
float T = y;
float B = y + h;
#if defined(GL_CLIP_ORIGIN)
if (!clip_origin_lower_left) { float tmp = T; T = B; B = tmp; } // Swap top and bottom if origin is upper left
#endif
const float orthoProjection[4][4] =
{
{ 2.0f / (R - L), 0.0f, 0.0f, 0.0f },
{ 0.0f, 2.0f / (T - B), 0.0f, 0.0f },
{ 0.0f, 0.0f, -1.0f, 0.0f },
{ (R + L) / (L - R), (T + B) / (B - T), 0.0f, 1.0f },
};
if ( g_ui.activetexture == nullptr )
g_ui.activetexture = g_ui.defaultTexture;
g_texturesManager->SetTexture( 0, g_ui.activetexture );
g_ui.activetexture->SetMin(TF_LINEAR);
g_ui.activetexture->SetMag(TF_LINEAR);
g_ui.activetexture->SetWrapS(TW_CLAMP_TO_EDGE);
g_ui.activetexture->SetWrapT(TW_CLAMP_TO_EDGE);
g_shaderSystem->SetShader( g_ui.shader );
g_shaderSystem->SetUniformMatrix( g_ui.shader, UNIFORM_PROJ_MATRIX, orthoProjection );
g_renderDevice->SetVerticesBuffer( g_ui.vb );
g_renderDevice->SetIndicesBuffer( g_ui.ib );
// Enable blending
g_renderDevice->SetBlending( true );
g_renderDevice->SetBlendingFunction( BF_SRC_ALPHA, BF_ONE_MINUS_SRC_ALPHA );
// Disable depth
g_renderDevice->SetDepthTest( false );
g_renderDevice->SetBackfaceCull( false );
g_renderDevice->DrawElements( PT_TRIANGLES, g_ui.Indexposition, true );
// Uncomment for UI VB debugging
//uiDumpBuffers();
g_ui.currentIdx = 0;
g_ui.Indexposition = 0;
g_ui.position = 0;
g_ui.count = 0;
}
typedef struct Character {
int codePoint, x, y, width, height, originX, originY;
} Character;
typedef struct Font {
const char* name;
int size, bold, italic, width, height, characterCount;
Character* characters;
} Font;

29
engine/render/ui.h Normal file
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@@ -0,0 +1,29 @@
#pragma once
#include <utils/maths.h>
#define MAX_UI_VERTICES 2048 * 4
#define MAX_UI_INDICES 2048 * 4
class Texture2D;
struct UIVertex
{
Vec2 position;
Vec2 uv;
Vec4 color;
};
void uiInit();
void uiShutdown();
void uiBeginRender();
void uiDrawQuad(const Vec2& a, const Vec2& b, const Vec2& c, const Vec2& d, const Vec4& color);
void uiDrawLines(const Vec2* drawPoints, const size_t pointsCount, bool closed, const Vec4& color);
void uiDrawRect(const Vec2& position, const Vec2& size, const Vec4& color);
void uiSetTexture(Texture2D* texture);
void uiSetTextureByName(const char* filename);
void uiEndRender();

156
engine/utils/maths.h
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@@ -25,15 +25,165 @@ struct Point2
int y; int y;
}; };
struct Vec2
{
float x;
float y;
Vec2() : x(0.0f), y(0.0f) {}
Vec2(float _val) : x(_val), y(_val) {}
Vec2(float _x, float _y) : x(_x), y(_y) {}
// Vec2 with Vec2 operations
inline Vec2 operator+(const Vec2& rhs) const { return Vec2(x + rhs.x, y + rhs.y); }
inline Vec2 operator-(const Vec2& rhs) const { return Vec2(x - rhs.x, y - rhs.y); }
inline Vec2 operator*(const Vec2& rhs) const { return Vec2(x * rhs.x, y * rhs.y); }
inline Vec2 operator/(const Vec2& rhs) const { return Vec2(x / rhs.x, y / rhs.y); }
inline Vec2& operator+=(const Vec2& rhs) { *this = *this + rhs; return *this; }
inline Vec2& operator*=(const Vec2& rhs) { *this = *this * rhs; return *this; }
inline Vec2& operator-=(const Vec2& rhs) { *this = *this - rhs; return *this; }
inline Vec2& operator/=(const Vec2& rhs) { *this = *this / rhs; return *this; }
// Vec2 with Scalar operations
inline Vec2 operator+(const float s) const { return Vec2(x + s, y + s); }
inline Vec2 operator-(const float s) const { return Vec2(x - s, y - s); }
inline Vec2 operator*(const float s) const { return Vec2(x * s, y * s); }
inline Vec2 operator/(const float s) const { return Vec2(x / s, y / s); }
inline Vec2& operator+=(const float s) { *this = *this + s; return *this; }
inline Vec2& operator*=(const float s) { *this = *this * s; return *this; }
inline Vec2& operator-=(const float s) { *this = *this - s; return *this; }
inline Vec2& operator/=(const float s) { *this = *this / s; return *this; }
};
struct Vec3 struct Vec3
{ {
float x; float x;
float y; float y;
float z; float z;
Vec3() { x = y = z = 0.f; } Vec3() : x(0.0f), y(0.0f), z(0.0f) {}
Vec3(float value) { x = y = z = value; } Vec3(float _val) : x(_val), y(_val), z(_val) {}
Vec3(float _x, float _y, float _z) { x = _x; y = _y; z = _z; } Vec3(float _x, float _y, float _z) : x(_x), y(_y), z(_z) {}
// Vec3 with Vec2 operations
inline Vec3 operator+(const Vec2& rhs) const { return Vec3(x + rhs.x, y + rhs.y, z); }
inline Vec3 operator-(const Vec2& rhs) const { return Vec3(x - rhs.x, y - rhs.y, z); }
inline Vec3 operator*(const Vec2& rhs) const { return Vec3(x * rhs.x, y * rhs.y, z); }
inline Vec3 operator/(const Vec2& rhs) const { return Vec3(x / rhs.x, y / rhs.y, z); }
inline Vec3& operator+=(const Vec2& rhs) { *this = *this + rhs; return *this; }
inline Vec3& operator*=(const Vec2& rhs) { *this = *this * rhs; return *this; }
inline Vec3& operator-=(const Vec2& rhs) { *this = *this - rhs; return *this; }
inline Vec3& operator/=(const Vec2& rhs) { *this = *this / rhs; return *this; }
// Vec3 with Vec3 operations
inline Vec3 operator+(const Vec3& rhs) const { return Vec3(x + rhs.x, y + rhs.y, z + rhs.z); }
inline Vec3 operator-(const Vec3& rhs) const { return Vec3(x - rhs.x, y - rhs.y, z - rhs.z); }
inline Vec3 operator*(const Vec3& rhs) const { return Vec3(x * rhs.x, y * rhs.y, z * rhs.z); }
inline Vec3 operator/(const Vec3& rhs) const { return Vec3(x / rhs.x, y / rhs.y, z / rhs.z); }
inline Vec3& operator+=(const Vec3& rhs) { *this = *this + rhs; return *this; }
inline Vec3& operator*=(const Vec3& rhs) { *this = *this * rhs; return *this; }
inline Vec3& operator-=(const Vec3& rhs) { *this = *this - rhs; return *this; }
inline Vec3& operator/=(const Vec3& rhs) { *this = *this / rhs; return *this; }
// Vec3 with Scalar operations
inline Vec3 operator+(const float s) const { return Vec3(x + s, y + s, z + s); }
inline Vec3 operator-(const float s) const { return Vec3(x - s, y - s, z - s); }
inline Vec3 operator*(const float s) const { return Vec3(x * s, y * s, z * s); }
inline Vec3 operator/(const float s) const { return Vec3(x / s, y / s, z / s); }
inline Vec3& operator+=(const float s) { *this = *this + s; return *this; }
inline Vec3& operator*=(const float s) { *this = *this * s; return *this; }
inline Vec3& operator-=(const float s) { *this = *this - s; return *this; }
inline Vec3& operator/=(const float s) { *this = *this / s; return *this; }
}; };
struct Vec4
{
float x;
float y;
float z;
float w;
Vec4() : x(0.0f), y(0.0f), z(0.0f), w(0.0f) {}
Vec4(float _val) : x(_val), y(_val), z(_val), w(_val) {}
Vec4(float _x, float _y, float _z, float _w) : x(_x), y(_y), z(_z), w(_w) {}
// Vec4 with Vec2 operations
inline Vec4 operator+(const Vec2& rhs) const { return Vec4(x + rhs.x, y + rhs.y, z, w); }
inline Vec4 operator-(const Vec2& rhs) const { return Vec4(x - rhs.x, y - rhs.y, z, w); }
inline Vec4 operator*(const Vec2& rhs) const { return Vec4(x * rhs.x, y * rhs.y, z, w); }
inline Vec4 operator/(const Vec2& rhs) const { return Vec4(x / rhs.x, y / rhs.y, z, w); }
inline Vec4& operator+=(const Vec2& rhs) { *this = *this + rhs; return *this; }
inline Vec4& operator*=(const Vec2& rhs) { *this = *this * rhs; return *this; }
inline Vec4& operator-=(const Vec2& rhs) { *this = *this - rhs; return *this; }
inline Vec4& operator/=(const Vec2& rhs) { *this = *this / rhs; return *this; }
// Vec4 with Vec3 operations
inline Vec4 operator+(const Vec3& rhs) const { return Vec4(x + rhs.x, y + rhs.y, z + rhs.z, w); }
inline Vec4 operator-(const Vec3& rhs) const { return Vec4(x - rhs.x, y - rhs.y, z - rhs.z, w); }
inline Vec4 operator*(const Vec3& rhs) const { return Vec4(x * rhs.x, y * rhs.y, z * rhs.z, w); }
inline Vec4 operator/(const Vec3& rhs) const { return Vec4(x / rhs.x, y / rhs.y, z / rhs.z, w); }
inline Vec4& operator+=(const Vec3& rhs) { *this = *this + rhs; return *this; }
inline Vec4& operator*=(const Vec3& rhs) { *this = *this * rhs; return *this; }
inline Vec4& operator-=(const Vec3& rhs) { *this = *this - rhs; return *this; }
inline Vec4& operator/=(const Vec3& rhs) { *this = *this / rhs; return *this; }
// Vec4 with Vec4 operations
inline Vec4 operator+(const Vec4& rhs) const { return Vec4(x + rhs.x, y + rhs.y, z + rhs.z, w + rhs.w); }
inline Vec4 operator-(const Vec4& rhs) const { return Vec4(x - rhs.x, y - rhs.y, z - rhs.z, w - rhs.w); }
inline Vec4 operator*(const Vec4& rhs) const { return Vec4(x * rhs.x, y * rhs.y, z * rhs.z, w * rhs.w); }
inline Vec4 operator/(const Vec4& rhs) const { return Vec4(x / rhs.x, y / rhs.y, z / rhs.z, w / rhs.w); }
inline Vec4& operator+=(const Vec4& rhs) { *this = *this + rhs; return *this; }
inline Vec4& operator*=(const Vec4& rhs) { *this = *this * rhs; return *this; }
inline Vec4& operator-=(const Vec4& rhs) { *this = *this - rhs; return *this; }
inline Vec4& operator/=(const Vec4& rhs) { *this = *this / rhs; return *this; }
// Vec4 with Scalar operations
inline Vec4 operator+(const float s) const { return Vec4(x + s, y + s, z + s, w + s); }
inline Vec4 operator-(const float s) const { return Vec4(x - s, y - s, z - s, w - s); }
inline Vec4 operator*(const float s) const { return Vec4(x * s, y * s, z * s, w * s); }
inline Vec4 operator/(const float s) const { return Vec4(x / s, y / s, z / s, w / s); }
inline Vec4& operator+=(const float s) { *this = *this + s; return *this; }
inline Vec4& operator*=(const float s) { *this = *this * s; return *this; }
inline Vec4& operator-=(const float s) { *this = *this - s; return *this; }
inline Vec4& operator/=(const float s) { *this = *this / s; return *this; }
};
inline Vec3 operator+(const float s, const Vec3& v)
{
return Vec3(s + v.x, s + v.y, s + v.z);
}
inline Vec3 operator-(const float s, const Vec3& v)
{
return Vec3(s - v.x, s - v.y, s - v.z);
}
inline Vec3 operator*(const float s, const Vec3& v)
{
return Vec3(s * v.x, s * v.y, s * v.z);
}
inline Vec3 operator/(const float s, const Vec3& v)
{
return Vec3(s / v.x, s / v.y, s / v.z);
}
#endif // !MATHS_H #endif // !MATHS_H