C++ (Cpp) _cairo_gl_operand_emit Beispiele

Beispiel #1

static inline void
_cairo_gl_composite_emit_vertex (cairo_gl_context_t *ctx,
                                 GLfloat x,
                                 GLfloat y,
                                 uint8_t alpha)
{
    GLfloat *vb = (GLfloat *) (void *) &ctx->vb[ctx->vb_offset];

    *vb++ = x;
    *vb++ = y;

    _cairo_gl_operand_emit (&ctx->operands[CAIRO_GL_TEX_SOURCE], &vb, x, y);
    _cairo_gl_operand_emit (&ctx->operands[CAIRO_GL_TEX_MASK  ], &vb, x, y);

    if (ctx->spans) {
	union fi {
	    float f;
	    GLbyte bytes[4];
	} fi;

	fi.bytes[0] = 0;
	fi.bytes[1] = 0;
	fi.bytes[2] = 0;
	fi.bytes[3] = alpha;
	*vb++ = fi.f;
    }

    ctx->vb_offset += ctx->vertex_size;
}

Beispiel #2

Datei: cairo-gl-composite.c Projekt: csyuschmjuh/cairo-nsgl

static inline void
_cairo_gl_composite_emit_vertex (cairo_gl_context_t *ctx,
				 GLfloat x, GLfloat y)
{
    GLfloat *vb = (GLfloat *) (void *) &ctx->vb[ctx->vb_offset];

    *vb++ = x;
    *vb++ = y;

    _cairo_gl_operand_emit (&ctx->operands[CAIRO_GL_TEX_SOURCE], &vb, x, y);
    _cairo_gl_operand_emit (&ctx->operands[CAIRO_GL_TEX_MASK  ], &vb, x, y);

    ctx->vb_offset += ctx->vertex_size;
}