C++ (Cpp) GL_TYPE_SIZE示例

示例#1

文件： vertex-buffer.cpp 项目： jrosser/videoplayer

// ----------------------------------------------------------------------------
vertex_buffer_t *
vertex_buffer_new( const char *format )
{
    size_t i, index = 0, stride = 0;
    const char *start = 0, *end = 0;
    char *pointer = 0;

    vertex_buffer_t *self = (vertex_buffer_t *) malloc (sizeof(vertex_buffer_t));
    if( !self )
    {
        return NULL;
    }

    self->format = strdup( format );

    for( i=0; i<MAX_VERTEX_ATTRIBUTE; ++i )
    {
        self->attributes[i] = 0;
    }

    start = format;
    do
    {
        end = (char *) (strchr(start+1, ':'));
        char *desc = 0;
        if (end == NULL)
        {
            desc = strdup(start);
        }
        else
        {
            desc = strdup(start);
            desc[end-start] = '0';
        }
        vertex_attribute_t *attribute = vertex_attribute_parse( desc );
        start = end+1;
        free(desc);
        attribute->pointer = pointer;
        stride += attribute->size*GL_TYPE_SIZE( attribute->type );
        pointer+= attribute->size*GL_TYPE_SIZE( attribute->type );
        self->attributes[index] = attribute;
        index++;
    } while ( end && (index < MAX_VERTEX_ATTRIBUTE) );

    for( i=0; i<index; ++i )
    {
        self->attributes[i]->stride = stride;
    }

    self->vertices = vector_new( stride );
    self->vertices_id  = 0;
    self->indices = vector_new( sizeof(GLuint) );
    self->indices_id  = 0;
    self->dirty = 1;
    return self;
}

示例#2

文件： vertex-buffer.c 项目： andrey013/freetype-gl

// ----------------------------------------------------------------------------
vertex_buffer_t *
vertex_buffer_new( const char *format )
{
    size_t i, index = 0, stride = 0;
    const char *start = 0, *end = 0;
    GLvoid *pointer = 0;

    vertex_buffer_t *self = (vertex_buffer_t *) malloc (sizeof(vertex_buffer_t));
    if( !self )
    {
        return NULL;
    }

    self->format = strdup( format );

    for( i=0; i<MAX_VERTEX_ATTRIBUTE; ++i )
    {
        self->attributes[i] = 0;
    }

    start = format;
    do
    {
        end = (char *) (strchr(start+1, ':'));
        char *desc = 0;
        if (end == NULL)
        {
            desc = strdup(start);
        }
        else
        {
 // strndup() was only added in OSX lion
#ifdef __APPLE__
            size_t len = end-start;
            desc = calloc( len+1, sizeof(char) );
            memcpy( desc, start, len );
#else
             desc = strndup(start, end-start);
#endif
        }
        vertex_attribute_t *attribute = vertex_attribute_parse( desc );
        start = end+1;
        free(desc);
        attribute->pointer = pointer;
        stride += attribute->size*GL_TYPE_SIZE( attribute->type );
        pointer+= attribute->size*GL_TYPE_SIZE( attribute->type );
        self->attributes[index] = attribute;
        index++;
    } while ( end && (index < MAX_VERTEX_ATTRIBUTE) );

    for( i=0; i<index; ++i )
    {
        self->attributes[i]->stride = stride;
    }

    self->vertices = vector_new( stride );
    self->vertices_id  = 0;
    self->indices = vector_new( sizeof(GLuint) );
    self->indices_id  = 0;
    self->dirty = 1;
    return self;
}

示例#3

文件： vertex-buffer.c 项目： williame/megaglest-source

// ----------------------------------------------------------------------------
VertexBuffer *
vertex_buffer_new( const char *format )
{
    size_t i, index = 0, stride = 0;
    const char *start = 0, *end = 0;
    GLvoid *pointer = 0;

    VertexBuffer *self = (VertexBuffer *) malloc (sizeof(VertexBuffer));
    if( !self )
    {
        return NULL;
    }

    self->format = strdup( format );

    for( i=0; i<MAX_VERTEX_ATTRIBUTE; ++i )
    {
        self->attributes[i] = 0;
    }

    start = format;
    do
    {
        end = (char *) (strchr(start+1, ':'));
		{
        char *desc = 0;
        if (end == NULL)
        {
            desc = strdup(start);
        }
        else
        {
            desc = strndup(start, end-start);
        }

		{
        VertexAttribute *attribute = vertex_attribute_parse( desc );
        start = end+1;
        free(desc);
        attribute->pointer = pointer;
        stride += attribute->size*GL_TYPE_SIZE( attribute->type );

#ifdef _WIN32
        pointer = (char *)pointer + attribute->size*GL_TYPE_SIZE( attribute->type );
#else
        pointer += attribute->size*GL_TYPE_SIZE( attribute->type );
#endif
        self->attributes[index] = attribute;
        index++;
		}
		}
    } while ( end && (index < MAX_VERTEX_ATTRIBUTE) );

    for( i=0; i<index; ++i )
    {
        self->attributes[i]->stride = stride;
    }

    self->vertices = vector_new( stride );
    self->vertices_id  = 0;
    self->indices = vector_new( sizeof(GLuint) );
    self->indices_id  = 0;
    self->dirty = 1;
    return self;
}