/*!****************************************************************************
@Function InitView
@Return bool true if no error occured
@Description Code in InitView() will be called by PVRShell upon
initialization or after a change in the rendering context.
Used to initialize variables that are dependant on the rendering
context (e.g. textures, vertex buffers, etc.)
******************************************************************************/
bool OGLES2BinaryShader::InitView()
{
// Initialise a colour to draw our triangle
// (For this training course, binary loaded shaders use a different colour
// To show which is being used. Red means it had to compile the shaders,
// green shows that it retrieved the binary from memory.
float afColour[]={0.0,0.0,0.0};
// Filename and path strings.
char* pWritePath = (char*)PVRShellGet(prefWritePath);
char* shaderPath = new char[strlen(pWritePath) + 13];
sprintf(shaderPath, "%sShaderBinary", pWritePath);
//Checks if the program binary handling extension is supported.
m_bBinaryShaderSupported=IsGLExtensionSupported("GL_OES_get_program_binary");
#if !defined (TARGET_OS_IPHONE)
glGetProgramBinaryOES=0;
glProgramBinaryOES=0;
// Retrieves the functions needed to use the extension.
if (m_bBinaryShaderSupported)
{
glGetProgramBinaryOES = (PFNGLGETPROGRAMBINARYOESPROC) PVRGetProcAddress(glGetProgramBinaryOES);
glProgramBinaryOES = (PFNGLPROGRAMBINARYOESPROC) PVRGetProcAddress(glProgramBinaryOES);
}
#endif
// If binary shaders are not supported or there isn't a valid binary shader stored, recompile the shaders.
if (!m_bBinaryShaderSupported || !loadBinaryProgram(shaderPath,m_uiProgramObject))
{
{
// Fragment shader code
const char* pszFragShader = "\
uniform lowp vec3 myColour;\
void main (void)\
{\
gl_FragColor = vec4(myColour, 1.0);\
}";
// Create the fragment shader object
m_uiFragShader = glCreateShader(GL_FRAGMENT_SHADER);
// Load the source code into it
glShaderSource(m_uiFragShader, 1, (const char**)&pszFragShader, NULL);
// Compile the source code
glCompileShader(m_uiFragShader);
// Check if compilation succeeded
GLint bShaderCompiled;
glGetShaderiv(m_uiFragShader, GL_COMPILE_STATUS, &bShaderCompiled);
if (!bShaderCompiled)
{
// An error happened, first retrieve the length of the log message
int i32InfoLogLength, i32CharsWritten;
glGetShaderiv(m_uiFragShader, GL_INFO_LOG_LENGTH, &i32InfoLogLength);
// Allocate enough space for the message and retrieve it
char* pszInfoLog = new char[i32InfoLogLength];
glGetShaderInfoLog(m_uiFragShader, i32InfoLogLength, &i32CharsWritten, pszInfoLog);
/*
Displays the message in a dialog box when the application quits
using the shell PVRShellSet function with first parameter prefExitMessage.
*/
char* pszMsg = new char[i32InfoLogLength+256];
strcpy(pszMsg, "Failed to compile fragment shader: ");
strcat(pszMsg, pszInfoLog);
PVRShellSet(prefExitMessage, pszMsg);
delete [] pszMsg;
delete [] pszInfoLog;
delete [] shaderPath;
return false;
}
}
/*!***************************************************************************
@Function LoadExtensions
@Description Initialises IMG extensions
*****************************************************************************/
void CPVRTglesExt::LoadExtensions()
{
glCurrentPaletteMatrixOES = 0;
glLoadPaletteFromModelViewMatrixOES = 0;
glMatrixIndexPointerOES = 0;
glWeightPointerOES = 0;
glBlendEquationOES = 0;
glBlendEquationSeparateOES = 0;
glClipPlanexIMG = 0;
glClipPlanefIMG = 0;
glVertexAttribPointerARB = 0;
glEnableVertexAttribArrayARB = 0;
glDisableVertexAttribArrayARB = 0;
glProgramStringARB = 0;
glBindProgramARB = 0;
glDeleteProgramsARB = 0;
glIsProgramARB = 0;
glGenProgramsARB = 0;
glVertexAttrib4fvARB = 0;
glVertexAttrib4xvIMG = 0;
glProgramLocalParameter4xIMG = 0;
glProgramLocalParameter4xvIMG = 0;
glProgramEnvParameter4xIMG = 0;
glProgramEnvParameter4xvIMG = 0;
glProgramEnvParameter4fARB = 0;
glProgramEnvParameter4fvARB = 0;
glProgramLocalParameter4fARB = 0;
glProgramLocalParameter4fvARB = 0;
glDrawTexiOES = 0;
glDrawTexivOES = 0;
glDrawTexsOES = 0;
glDrawTexsvOES = 0;
glDrawTexxOES = 0;
glDrawTexxvOES = 0;
glDrawTexfOES = 0;
glDrawTexfvOES = 0;
glGetTexStreamDeviceAttribivIMG = 0;
glTexBindStreamIMG = 0;
glGetTexStreamDeviceNameIMG = 0;
glMultiDrawElementsEXT = 0;
glMultiDrawArraysEXT = 0;
glMapBufferOES = 0;
glUnmapBufferOES = 0;
glGetBufferPointervOES = 0;
glIsRenderbufferOES = 0;
glBindRenderbufferOES = 0;
glDeleteRenderbuffersOES = 0;
glGenRenderbuffersOES = 0;
glRenderbufferStorageOES = 0;
glGetRenderbufferParameterivOES = 0;
glIsFramebufferOES = 0;
glBindFramebufferOES = 0;
glDeleteFramebuffersOES = 0;
glGenFramebuffersOES = 0;
glCheckFramebufferStatusOES = 0;
glFramebufferTexture2DOES = 0;
glFramebufferRenderbufferOES = 0;
glGetFramebufferAttachmentParameterivOES = 0;
glGenerateMipmapOES = 0;
glPointSizePointerOES = 0;
glQueryMatrixxOES = 0;
glDiscardFramebufferEXT = 0;
glBindVertexArrayOES = 0;
glDeleteVertexArraysOES = 0;
glGenVertexArraysOES = 0;
glIsVertexArrayOES = 0;
const GLubyte *pszGLExtensions;
/* Retrieve GL extension string */
pszGLExtensions = glGetString(GL_EXTENSIONS);
/* GL_OES_matrix_palette */
if (strstr((char *)pszGLExtensions, "GL_OES_matrix_palette"))
{
glCurrentPaletteMatrixOES = (PFNGLCURRENTPALETTEMATRIXOES)PVRGetProcAddress(glCurrentPaletteMatrixOES);
glLoadPaletteFromModelViewMatrixOES = (PFNGLLOADPALETTEFROMMODELVIEWMATRIXOES)PVRGetProcAddress(glLoadPaletteFromModelViewMatrixOES);
glMatrixIndexPointerOES = (PFNGLMATRIXINDEXPOINTEROES)PVRGetProcAddress(glMatrixIndexPointerOES);
glWeightPointerOES = (PFNGLWEIGHTPOINTEROES)PVRGetProcAddress(glWeightPointerOES);
}
/* GL_OES_draw_texture */
if (strstr((char *)pszGLExtensions, "GL_OES_draw_texture"))
{
glDrawTexiOES = (PFNGLDRAWTEXIOES)PVRGetProcAddress(glDrawTexiOES);
glDrawTexivOES = (PFNGLDRAWTEXIVOES)PVRGetProcAddress(glDrawTexivOES);
glDrawTexsOES = (PFNGLDRAWTEXSOES)PVRGetProcAddress(glDrawTexsOES);
glDrawTexsvOES = (PFNGLDRAWTEXSVOES)PVRGetProcAddress(glDrawTexsvOES);
glDrawTexxOES = (PFNGLDRAWTEXXOES)PVRGetProcAddress(glDrawTexxOES);
glDrawTexxvOES = (PFNGLDRAWTEXXVOES)PVRGetProcAddress(glDrawTexxvOES);
glDrawTexfOES = (PFNGLDRAWTEXFOES)PVRGetProcAddress(glDrawTexfOES);
glDrawTexfvOES = (PFNGLDRAWTEXFVOES)PVRGetProcAddress(glDrawTexfvOES);
}
/* GL_EXT_multi_draw_arrays */
if (strstr((char *)pszGLExtensions, "GL_OES_mapbuffer"))
{
glMapBufferOES = (PFNGLMAPBUFFEROES)PVRGetProcAddress(glMapBufferOES);
glUnmapBufferOES = (PFNGLUNMAPBUFFEROES)PVRGetProcAddress(glUnmapBufferOES);
glGetBufferPointervOES = (PFNGLGETBUFFERPOINTERVOES)PVRGetProcAddress(glGetBufferPointervOES);
}
/* GL_OES_Framebuffer_object*/
if (strstr((char *)pszGLExtensions, "GL_OES_framebuffer_object"))
{
glIsRenderbufferOES = (PFNGLISRENDERBUFFEROES)PVRGetProcAddress(glIsRenderbufferOES) ;
glBindRenderbufferOES = (PFNGLBINDRENDERBUFFEROES)PVRGetProcAddress(glBindRenderbufferOES);
glDeleteRenderbuffersOES = (PFNGLDELETERENDERBUFFERSOES)PVRGetProcAddress(glDeleteRenderbuffersOES);
glGenRenderbuffersOES = (PFNGLGENRENDERBUFFERSOES)PVRGetProcAddress(glGenRenderbuffersOES);
glRenderbufferStorageOES = (PFNGLRENDERBUFFERSTORAGEOES)PVRGetProcAddress(glRenderbufferStorageOES);
glGetRenderbufferParameterivOES = (PFNGLGETRENDERBUFFERPARAMETERIVOES)PVRGetProcAddress(glGetRenderbufferParameterivOES);
glIsFramebufferOES = (PFNGLISFRAMEBUFFEROES)PVRGetProcAddress(glIsFramebufferOES);
glBindFramebufferOES = (PFNGLBINDFRAMEBUFFEROES)PVRGetProcAddress(glBindFramebufferOES);
glDeleteFramebuffersOES = (PFNGLDELETEFRAMEBUFFERSOES)PVRGetProcAddress(glDeleteFramebuffersOES);
glGenFramebuffersOES = (PFNGLGENFRAMEBUFFERSOES)PVRGetProcAddress(glGenFramebuffersOES);
glCheckFramebufferStatusOES = (PFNGLCHECKFRAMEBUFFERSTATUSOES)PVRGetProcAddress(glCheckFramebufferStatusOES);
glFramebufferTexture2DOES = (PFNGLFRAMEBUFFERTEXTURE2DOES)PVRGetProcAddress(glFramebufferTexture2DOES);
glFramebufferRenderbufferOES = (PFNGLFRAMEBUFFERRENDERBUFFEROES)PVRGetProcAddress(glFramebufferRenderbufferOES);
glGetFramebufferAttachmentParameterivOES = (PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVOES)PVRGetProcAddress(glGetFramebufferAttachmentParameterivOES);
glGenerateMipmapOES = (PFNGLGENERATEMIPMAPOES)PVRGetProcAddress(glGenerateMipmapOES);
}
/* GL_OES_point_size_array */
if (strstr((char *)pszGLExtensions, "GL_OES_point_size_array"))
{
glPointSizePointerOES = (PFNGLPOINTSIZEPOINTEROES)PVRGetProcAddress(glPointSizePointerOES);
}
#if !defined (TARGET_OS_IPHONE)
/* GL_IMG_user_clip_plane */
if (strstr((char *)pszGLExtensions, "GL_IMG_user_clip_plane"))
{
/* glClipPlanexIMG and glClipPlanefIMG */
glClipPlanexIMG = (PFNGLCLIPPLANEXIMG)PVRGetProcAddress(glClipPlanexIMG);
glClipPlanefIMG = (PFNGLCLIPPLANEFIMG)PVRGetProcAddress(glClipPlanefIMG);
}
/* GL_IMG_vertex_program */
if (strstr((char *)pszGLExtensions, "GL_IMG_vertex_program"))
{
glVertexAttribPointerARB = (PFNGLVERTEXATTRIBPOINTERARB)PVRGetProcAddress(glVertexAttribPointerARB);
glEnableVertexAttribArrayARB = (PFNGLENABLEVERTEXATTRIBARRAYARB)PVRGetProcAddress(glEnableVertexAttribArrayARB);
glDisableVertexAttribArrayARB = (PFNGLDISABLEVERTEXATTRIBARRAYARB)PVRGetProcAddress(glDisableVertexAttribArrayARB);
glProgramStringARB = (PFNGLPROGRAMSTRINGARB)PVRGetProcAddress(glProgramStringARB);
glBindProgramARB = (PFNGLBINDPROGRAMARB)PVRGetProcAddress(glBindProgramARB);
glDeleteProgramsARB = (PFNGLDELETEPROGRAMSARB)PVRGetProcAddress(glDeleteProgramsARB);
glIsProgramARB = (PFNGLISPROGRAMARB)PVRGetProcAddress(glIsProgramARB);
glGenProgramsARB = (PFNGLGENPROGRAMSARB)PVRGetProcAddress(glGenProgramsARB);
glVertexAttrib4fvARB = (PFNGLVERTEXATTRIB4FVARB)PVRGetProcAddress(glVertexAttrib4fvARB);
glVertexAttrib4xvIMG = (PFNGLVERTEXATTRIB4XVIMG)PVRGetProcAddress(glVertexAttrib4xvIMG);
glProgramLocalParameter4xIMG = (PFNGLPROGRAMLOCALPARAMETER4XIMG)PVRGetProcAddress(glProgramLocalParameter4xIMG);
glProgramLocalParameter4xvIMG = (PFNGLPROGRAMLOCALPARAMETER4XVIMG)PVRGetProcAddress(glProgramLocalParameter4xvIMG);
glProgramEnvParameter4xIMG = (PFNGLPROGRAMENVPARAMETER4XIMG)PVRGetProcAddress(glProgramEnvParameter4xIMG);
glProgramEnvParameter4xvIMG = (PFNGLPROGRAMENVPARAMETER4XVIMG)PVRGetProcAddress(glProgramEnvParameter4xvIMG);
glProgramEnvParameter4fARB = (PFNGLPROGRAMENVPARAMETER4FARB)PVRGetProcAddress(glProgramEnvParameter4fARB);
glProgramEnvParameter4fvARB = (PFNGLPROGRAMENVPARAMETER4FVARB)PVRGetProcAddress(glProgramEnvParameter4fvARB);
glProgramLocalParameter4fARB = (PFNGLPROGRAMLOCALPARAMETER4FARB)PVRGetProcAddress(glProgramLocalParameter4fARB);
glProgramLocalParameter4fvARB = (PFNGLPROGRAMLOCALPARAMETER4FVARB)PVRGetProcAddress(glProgramLocalParameter4fvARB);
}
/* IMG_texture_stream */
if (strstr((char *)pszGLExtensions, "GL_IMG_texture_stream"))
{
glGetTexStreamDeviceAttribivIMG = (PFNGLGETTEXSTREAMDEVICEATTRIBIVIMG)PVRGetProcAddress(glGetTexStreamDeviceAttribivIMG);
glTexBindStreamIMG = (PFNGLTEXBINDSTREAMIMG)PVRGetProcAddress(glTexBindStreamIMG);
glGetTexStreamDeviceNameIMG = (PFNGLGETTEXSTREAMDEVICENAMEIMG)PVRGetProcAddress(glGetTexStreamDeviceNameIMG);
}
/* GL_EXT_multi_draw_arrays */
if (strstr((char *)pszGLExtensions, "GL_EXT_multi_draw_arrays"))
{
glMultiDrawElementsEXT = (PFNGLMULTIDRAWELEMENTS)PVRGetProcAddress(glMultiDrawElementsEXT);
glMultiDrawArraysEXT = (PFNGLMULTIDRAWARRAYS)PVRGetProcAddress(glMultiDrawArraysEXT);
}
/* GL_OES_query_matrix */
if (strstr((char *)pszGLExtensions, "GL_OES_query_matrix"))
{
glQueryMatrixxOES = (PFNGLQUERYMATRIXXOES)PVRGetProcAddress(glQueryMatrixxOES);
}
/* GL_OES_blend_equation */
if (strstr((char *)pszGLExtensions, "GL_OES_blend_subtract"))
{
glBlendEquationOES = (PFNGLBLENDEQUATIONOES)PVRGetProcAddress(glBlendEquationOES);
}
/* GL_OES_query_matrix */
if (strstr((char *)pszGLExtensions, "GL_OES_blend_equation_separate"))
{
glBlendEquationSeparateOES = (PFNGLBLENDEQUATIONSEPARATEOES)PVRGetProcAddress(glBlendEquationSeparateOES);
}
/* GL_OES_vertex_array_object */
if (strstr((char *)pszGLExtensions, "GL_OES_vertex_array_object"))
{
glBindVertexArrayOES = (PFNGLBINDVERTEXARRAYOES) PVRGetProcAddress(glBindVertexArrayOES);
glDeleteVertexArraysOES = (PFNGLDELETEVERTEXARRAYSOES) PVRGetProcAddress(glDeleteVertexArraysOES);
glGenVertexArraysOES = (PFNGLGENVERTEXARRAYSOES) PVRGetProcAddress(glGenVertexArraysOES);
glIsVertexArrayOES = (PFNGLISVERTEXARRAYOES) PVRGetProcAddress(glIsVertexArrayOES);
}
#endif
#if defined(GL_EXT_discard_framebuffer)
/* GL_EXT_discard_framebuffer */
if (strstr((char *)pszGLExtensions, "GL_EXT_discard_framebuffer"))
{
glDiscardFramebufferEXT = (PFNGLDISCARDFRAMEBUFFEREXT) PVRGetProcAddress(glDiscardFramebufferEXT);
}
#endif
}
/*!***************************************************************************
@Function LoadExtensions
@Description Initialises IMG extensions
*****************************************************************************/
void CPVRTgles2Ext::LoadExtensions()
{
glMultiDrawElementsEXT = 0;
glMultiDrawArraysEXT = 0;
glMapBufferOES = 0;
glUnmapBufferOES = 0;
glGetBufferPointervOES = 0;
glDiscardFramebufferEXT = 0;
glBindVertexArrayOES = 0;
glDeleteVertexArraysOES = 0;
glGenVertexArraysOES = 0;
glIsVertexArrayOES = 0;
glRenderbufferStorageMultisampleIMG = 0;
glFramebufferTexture2DMultisampleIMG = 0;
// Supported extensions provide new entry points for OpenGL ES 2.0.
const GLubyte *pszGLExtensions;
/* Retrieve GL extension string */
pszGLExtensions = glGetString(GL_EXTENSIONS);
#if !defined(TARGET_OS_IPHONE)
/* GL_EXT_multi_draw_arrays */
if (strstr((char *)pszGLExtensions, "GL_EXT_multi_draw_arrays"))
{
glMultiDrawElementsEXT = (PFNGLMULTIDRAWELEMENTS) PVRGetProcAddress(glMultiDrawElementsEXT);
glMultiDrawArraysEXT = (PFNGLMULTIDRAWARRAYS) PVRGetProcAddress(glMultiDrawArraysEXT);
}
/* GL_EXT_multi_draw_arrays */
if (strstr((char *)pszGLExtensions, "GL_OES_mapbuffer"))
{
glMapBufferOES = (PFNGLMAPBUFFEROES) PVRGetProcAddress(glMapBufferOES);
glUnmapBufferOES = (PFNGLUNMAPBUFFEROES) PVRGetProcAddress(glUnmapBufferOES);
glGetBufferPointervOES = (PFNGLGETBUFFERPOINTERVOES) PVRGetProcAddress(glGetBufferPointervOES);
}
/* GL_OES_vertex_array_object */
if (strstr((char *)pszGLExtensions, "GL_OES_vertex_array_object"))
{
glBindVertexArrayOES = (PFNGLBINDVERTEXARRAYOES) PVRGetProcAddress(glBindVertexArrayOES);
glDeleteVertexArraysOES = (PFNGLDELETEVERTEXARRAYSOES) PVRGetProcAddress(glDeleteVertexArraysOES);
glGenVertexArraysOES = (PFNGLGENVERTEXARRAYSOES) PVRGetProcAddress(glGenVertexArraysOES);
glIsVertexArrayOES = (PFNGLISVERTEXARRAYOES) PVRGetProcAddress(glIsVertexArrayOES);
}
/* GL_IMG_multisampled_render_to_texture */
if (strstr((char *)pszGLExtensions, "GL_IMG_multisampled_render_to_texture"))
{
glRenderbufferStorageMultisampleIMG = (PFNGLRENDERBUFFERSTORAGEMULTISAMPLEIMG)PVRGetProcAddress(glRenderbufferStorageMultisampleIMG);
glFramebufferTexture2DMultisampleIMG = (PFNGLFRAMEBUFFERTEXTURE2DMULTISAMPLEIMG)PVRGetProcAddress(glFramebufferTexture2DMultisampleIMG);
}
#endif
#if defined(GL_EXT_discard_framebuffer)
/* GL_EXT_discard_framebuffer */
if (strstr((char *)pszGLExtensions, "GL_EXT_discard_framebuffer"))
{
glDiscardFramebufferEXT = (PFNGLDISCARDFRAMEBUFFEREXT) PVRGetProcAddress(glDiscardFramebufferEXT);
}
#endif
}
